{"id":3444,"date":"2026-06-03T07:40:20","date_gmt":"2026-06-03T07:40:20","guid":{"rendered":"https:\/\/pepsenpu.com\/?p=3444"},"modified":"2026-06-03T07:40:22","modified_gmt":"2026-06-03T07:40:22","slug":"how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing","status":"publish","type":"post","link":"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/","title":{"rendered":"How We Control Quality in Custom Cast Molded Polyurethane Products Manufacturing?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Inhalts\u00fcbersicht<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Inhaltsverzeichnis umschalten\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Umschalten auf<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Why_Quality_Control_Matters_More_Than_Material_Specifications\" >Why Quality Control Matters More Than Material Specifications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_1_Incoming_Raw_Material_Verification\" >Step 1: Incoming Raw Material Verification<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Polyol_Quality\" >Polyol Quality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Isocyanate_Quality\" >Isocyanate Quality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Additives_and_Pigments\" >Additives and Pigments<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_2_Controlled_Material_Preparation\" >Step 2: Controlled Material Preparation<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Material_Temperature\" >Material Temperature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Moisture_Control\" >Moisture Control<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Mixing_Ratio_Verification\" >Mixing Ratio Verification<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_3_Process_Monitoring_During_Casting\" >Step 3: Process Monitoring During Casting<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Degassing_Inspection\" >Degassing Inspection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Mold_Preparation_Verification\" >Mold Preparation Verification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Customer-Supplied_Core_Inspection\" >Customer-Supplied Core Inspection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Casting_Observation\" >Casting Observation<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_4_Controlled_Curing_and_Post-Curing\" >Step 4: Controlled Curing and Post-Curing<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Cure_Temperature\" >Cure Temperature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Cure_Time\" >Cure Time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Post-Curing_Process\" >Post-Curing Process<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_5_In-House_Physical_Property_Testing\" >Step 5: In-House Physical Property Testing<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Shore_Hardness_Testing\" >Shore Hardness Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Tensile_Strength_Testing\" >Tensile Strength Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Elongation_at_Break\" >Dehnung beim Bruch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Tear_Strength_Testing\" >Tear Strength Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Compression_Set_Testing\" >Compression Set Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Abrasion_Resistance_Testing\" >Abrasion Resistance Testing<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_6_Hardness_Dimensional_Inspection\" >Step 6: Hardness &amp; Dimensional Inspection<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#First_Article_Inspection_FAI\" >First Article Inspection (FAI)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Hardness_Testing\" >Hardness Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Dimensional_Inspection\" >Dimensional Inspection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Final_Inspection\" >Final Inspection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Precision_Measuring_Equipment\" >Precision Measuring Equipment<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_7_Bond_Strength_Verification_for_Metal-Bonded_Parts\" >Step 7: Bond Strength Verification for Metal-Bonded Parts<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Surface_Preparation_Verification\" >Surface Preparation Verification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Bonding_Process_Control\" >Bonding Process Control<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Bond_Failure_Analysis\" >Bond Failure Analysis<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_8_Final_Visual_Inspection\" >Step 8: Final Visual Inspection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Step_9_Self-Developed_Application_Simulation_Test_Bench\" >Step 9: Self-Developed Application Simulation Test Bench<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Simulated_Test_Bench_for_Shield_Machine_PU_Wheels\" >Simulated Test Bench for Shield Machine PU Wheels<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Why_Application_Simulation_Matters\" >Why Application Simulation Matters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Full_Batch_Traceability\" >Full Batch Traceability<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Frequently_Asked_Questions\" >H\u00e4ufig gestellte Fragen<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#How_do_you_ensure_consistency_between_production_batches\" >How do you ensure consistency between production batches?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Do_you_provide_inspection_reports\" >Do you provide inspection reports?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Can_you_test_custom_performance_requirements\" >Can you test custom performance requirements?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Why_is_moisture_control_so_important_in_polyurethane_manufacturing\" >Why is moisture control so important in polyurethane manufacturing?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Is_hardness_the_most_important_polyurethane_property\" >Is hardness the most important polyurethane property?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-47\" href=\"https:\/\/pepsenpu.com\/de\/how-we-control-quality-in-custom-cast-molded-polyurethane-products-manufacturing\/#Quality_Is_Built_Into_the_Process\" >Quality Is Built Into the Process<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When sourcing custom cast <strong><a href=\"https:\/\/pepsenpu.com\/de\/produkte\/\" data-type=\"link\" data-id=\"https:\/\/pepsenpu.com\/products\/\">Polyurethan-Produkte<\/a><\/strong>, most buyers focus on material hardness, tensile strength, or pricing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, experienced engineers know that the real challenge is consistency.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Two polyurethane parts may look identical, share the same hardness rating, and even come from the same supplier. Yet one lasts five years while the other fails within months.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The difference often comes down to quality control.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At our facility, quality is not something we inspect at the end of production. It is built into every stage of manufacturing\u2014from raw material verification to final dimensional inspection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This article explains how our in-house laboratory and quality control procedures help ensure that every polyurethane parts meets the performance expectations of industrial applications.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Quality_Control_Matters_More_Than_Material_Specifications\"><\/span>Why Quality Control Matters More Than Material Specifications<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Many polyurethane suppliers can provide a data sheet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Far fewer can guarantee that the actual finished product consistently matches those specifications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For industrial applications, variations in processing conditions can significantly affect:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Abriebfestigkeit<\/li>\n\n\n\n<li>Druckverformungsrest<\/li>\n\n\n\n<li>Rei\u00dffestigkeit<\/li>\n\n\n\n<li>Load-bearing capacity<\/li>\n\n\n\n<li>Dynamic fatigue resistance<\/li>\n\n\n\n<li>Bond strength<\/li>\n\n\n\n<li>Dimensional stability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even small deviations in formulation ratios, curing temperatures, or moisture levels can create major performance differences in service.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is why our quality control system focuses not only on testing finished parts but also on controlling every critical variable throughout production.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Incoming_Raw_Material_Verification\"><\/span>Step 1: Incoming Raw Material Verification<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every production batch starts with raw material inspection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before any polyurethane system enters production, our laboratory verifies:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Polyol_Quality\"><\/span>Polyol Quality<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We inspect:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Appearance<\/li>\n\n\n\n<li>Moisture content<\/li>\n\n\n\n<li>Viscosity<\/li>\n\n\n\n<li>Storage condition<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Excess moisture can react with isocyanates and generate unwanted carbon dioxide bubbles, causing internal defects.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Isocyanate_Quality\"><\/span>Isocyanate Quality<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Appearance<\/li>\n\n\n\n<li>NCO content<\/li>\n\n\n\n<li>Storage history<\/li>\n\n\n\n<li>Temperature condition<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even slight degradation can affect final crosslink density and physical properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Additives_and_Pigments\"><\/span>Additives and Pigments<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Each additive batch is checked against approved specifications before release to production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No material enters production without documented verification.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"429\" data-id=\"3455\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-raw-materials-inspection-for-polyurethane-products.webp\" alt=\"PEPSEN-raw-materials--inspection-for-polyurethane-products\" class=\"wp-image-3455\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-raw-materials-inspection-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-raw-materials-inspection-for-polyurethane-products-300x161.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-raw-materials-inspection-for-polyurethane-products-768x412.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-raw-materials-inspection-for-polyurethane-products-18x10.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"354\" data-id=\"3448\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Incoming-polyurethane-raw-material-verification.webp\" alt=\"Incoming-polyurethane-raw-material-verification\" class=\"wp-image-3448\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Incoming-polyurethane-raw-material-verification.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Incoming-polyurethane-raw-material-verification-300x133.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Incoming-polyurethane-raw-material-verification-768x340.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Incoming-polyurethane-raw-material-verification-18x8.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Controlled_Material_Preparation\"><\/span>Step 2: Controlled Material Preparation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Polyurethane processing is extremely sensitive to environmental conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our production team carefully controls:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Material_Temperature\"><\/span>Material Temperature<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Polyols and isocyanates are conditioned to specified temperatures before mixing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Temperature variations can affect:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Viscosity<\/li>\n\n\n\n<li>Flow behavior<\/li>\n\n\n\n<li>Reaction speed<\/li>\n\n\n\n<li>Cure profile<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Moisture_Control\"><\/span>Moisture Control<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Moisture is one of the most common causes of polyurethane defects.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To minimize contamination risks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Raw materials are sealed properly<\/li>\n\n\n\n<li>Containers remain closed when not in use<\/li>\n\n\n\n<li>Production areas are monitored<\/li>\n\n\n\n<li>Dry handling procedures are followed<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mixing_Ratio_Verification\"><\/span>Mixing Ratio Verification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Every batch follows documented formulations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Operators verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Component weights<\/li>\n\n\n\n<li>Mixing ratios<\/li>\n\n\n\n<li>Batch numbers<\/li>\n\n\n\n<li>Processing records<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This ensures full traceability throughout production.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"476\" data-id=\"3447\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/controlled-polyurethane-material-storage-and-labelled-for-preparation.webp\" alt=\"controlled-polyurethane-material -storage-and-labelled-for-preparation\" class=\"wp-image-3447\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/controlled-polyurethane-material-storage-and-labelled-for-preparation.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/controlled-polyurethane-material-storage-and-labelled-for-preparation-300x179.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/controlled-polyurethane-material-storage-and-labelled-for-preparation-768x457.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/controlled-polyurethane-material-storage-and-labelled-for-preparation-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_3_Process_Monitoring_During_Casting\"><\/span>Step 3: Process Monitoring During Casting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike injection molding, cast polyurethane production involves chemical reactions that continue during processing and curing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Critical production parameters are monitored throughout manufacturing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Degassing_Inspection\"><\/span>Degassing Inspection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum degassing removes entrapped air before casting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Proper degassing helps prevent:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Internal voids<\/li>\n\n\n\n<li>Porosity<\/li>\n\n\n\n<li>Reduced mechanical strength<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mold_Preparation_Verification\"><\/span>Mold Preparation Verification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Before casting, molds and inserts are inspected for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cleanliness<\/li>\n\n\n\n<li>Release agent condition<\/li>\n\n\n\n<li>Temperature consistency<\/li>\n\n\n\n<li>Dimensional integrity<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Customer-Supplied_Core_Inspection\"><\/span>Customer-Supplied Core Inspection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Customer-supplied wheel cores, roller cores, and metal inserts are inspected before casting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inspection helps verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Critical dimensions<\/li>\n\n\n\n<li>Surface condition<\/li>\n\n\n\n<li>Rust and contamination<\/li>\n\n\n\n<li>Bonding surface quality<\/li>\n\n\n\n<li>Structural integrity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Casting_Observation\"><\/span>Casting Observation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Operators monitor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Material flow<\/li>\n\n\n\n<li>Fill quality<\/li>\n\n\n\n<li>Air entrapment risks<\/li>\n\n\n\n<li>Surface condition<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Early inspection helps prevent bonding failures, dimensional issues, and costly rework.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"363\" data-id=\"3453\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products.webp\" alt=\"PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products\" class=\"wp-image-3453\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products-300x136.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products-768x348.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-wheel-roller-inspection-for-polyurethane-products-18x8.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3454\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-mold-inspection-for-polyurethane-products.webp\" alt=\"PEPSEN-mold-inspection-for-polyurethane-products\" class=\"wp-image-3454\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-mold-inspection-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-mold-inspection-for-polyurethane-products-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-mold-inspection-for-polyurethane-products-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-mold-inspection-for-polyurethane-products-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" data-id=\"3452\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-insert-inspection-for-polyurethane-products.webp\" alt=\"PEPSEN-metal-insert-inspection-for-polyurethane-products\" class=\"wp-image-3452\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-insert-inspection-for-polyurethane-products.webp 600w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-insert-inspection-for-polyurethane-products-225x300.webp 225w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-metal-insert-inspection-for-polyurethane-products-9x12.webp 9w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_4_Controlled_Curing_and_Post-Curing\"><\/span>Step 4: Controlled Curing and Post-Curing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Curing is where polyurethane develops its final physical properties.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A part that is improperly cured may initially pass inspection but fail prematurely in service.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our curing procedures control:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cure_Temperature\"><\/span>Cure Temperature<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Maintaining correct temperatures ensures complete polymerization.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cure_Time\"><\/span>Cure Time<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Insufficient curing can reduce:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zugfestigkeit<\/li>\n\n\n\n<li>Rei\u00dffestigkeit<\/li>\n\n\n\n<li>Abriebfestigkeit<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Post-Curing_Process\"><\/span>Post-Curing Process<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When required, parts undergo post-curing to optimize:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mechanical properties<\/li>\n\n\n\n<li>Heat resistance<\/li>\n\n\n\n<li>Long-term dimensional stability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">All curing records are documented and traceable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"468\" data-id=\"3450\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-casting-process-control-and-record-for-polyurethane-products.webp\" alt=\"PEPSEN-casting-process-control-and-record-for-polyurethane-products\" class=\"wp-image-3450\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-casting-process-control-and-record-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-casting-process-control-and-record-for-polyurethane-products-300x176.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-casting-process-control-and-record-for-polyurethane-products-768x449.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-casting-process-control-and-record-for-polyurethane-products-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_5_In-House_Physical_Property_Testing\"><\/span>Step 5: In-House Physical Property Testing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Random testing is not enough for critical industrial applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our laboratory routinely verifies key material properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Shore_Hardness_Testing\"><\/span>Shore Hardness Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hardness is measured using calibrated instruments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This verifies consistency from batch to batch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tensile_Strength_Testing\"><\/span>Tensile Strength Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Testing confirms that material performance meets specification requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Elongation_at_Break\"><\/span>Dehnung beim Bruch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Elongation provides insight into flexibility and toughness.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tear_Strength_Testing\"><\/span>Tear Strength Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tear resistance is especially important for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Conveyor components<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/pepsenpu.com\/de\/kategorie\/produkte\/individuell-geformtes-polyurethan\/polyurethan-klingen\/\" data-type=\"link\" data-id=\"https:\/\/pepsenpu.com\/category\/products\/custom-molded-polyurethane\/polyurethane-blades\/\">Schaberklingen<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/pepsenpu.com\/de\/kategorie\/produkte\/polyurethan-rader-produkte\/\" data-type=\"link\" data-id=\"https:\/\/pepsenpu.com\/category\/products\/polyurethane-wheels-products\/\">R\u00e4der<\/a><\/strong><\/li>\n\n\n\n<li>Seals<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Compression_Set_Testing\"><\/span>Compression Set Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For load-bearing applications, compression set evaluation helps predict long-term deformation behavior.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Abrasion_Resistance_Testing\"><\/span>Abrasion Resistance Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wear resistance is one of polyurethane&#8217;s primary advantages.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laboratory testing helps verify expected service life performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3457\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-testing-Center.webp\" alt=\"PEPSEN-testing-Center\" class=\"wp-image-3457\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-testing-Center.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-testing-Center-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-testing-Center-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-testing-Center-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"505\" data-id=\"3458\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-universal-testing-machine-FOR-TENSILE-TEAR-AND-ELONGATION-AT-BREAK.webp\" class=\"wp-image-3458\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-universal-testing-machine-FOR-TENSILE-TEAR-AND-ELONGATION-AT-BREAK.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-universal-testing-machine-FOR-TENSILE-TEAR-AND-ELONGATION-AT-BREAK-300x189.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-universal-testing-machine-FOR-TENSILE-TEAR-AND-ELONGATION-AT-BREAK-768x485.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-universal-testing-machine-FOR-TENSILE-TEAR-AND-ELONGATION-AT-BREAK-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3449\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-abrasion-tester.webp\" alt=\"PEPSEN- abrasion-tester\" class=\"wp-image-3449\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-abrasion-tester.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-abrasion-tester-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-abrasion-tester-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-abrasion-tester-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"691\" data-id=\"3456\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/pepsen-resilence-tester.webp\" alt=\"pepsen-resilence- tester\" class=\"wp-image-3456\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/pepsen-resilence-tester.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/pepsen-resilence-tester-300x259.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/pepsen-resilence-tester-768x663.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/pepsen-resilence-tester-14x12.webp 14w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3451\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products.webp\" alt=\"PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products\" class=\"wp-image-3451\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-Friction-Coefficient-Tester-for-polyurethane-products-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_6_Hardness_Dimensional_Inspection\"><\/span>Step 6: Hardness &amp; Dimensional Inspection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Material quality alone is not enough.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consistent hardness and accurate dimensions are essential for proper fit, performance, and service life.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our QC team performs:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"First_Article_Inspection_FAI\"><\/span>First Article Inspection (FAI)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Before full production begins, the first completed part is inspected to verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shore hardness<\/li>\n\n\n\n<li>Critical dimensions<\/li>\n\n\n\n<li>Surface quality<\/li>\n\n\n\n<li>Drawing compliance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Production proceeds only after approval.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hardness_Testing\"><\/span>Hardness Testing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hardness is checked using calibrated instruments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Testing helps verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shore A or Shore D hardness<\/li>\n\n\n\n<li>Batch consistency<\/li>\n\n\n\n<li>Specification compliance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dimensional_Inspection\"><\/span>Dimensional Inspection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on product requirements, inspections may include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Outside diameter<\/li>\n\n\n\n<li>Inside diameter<\/li>\n\n\n\n<li>Dicke<\/li>\n\n\n\n<li>Breite<\/li>\n\n\n\n<li>Concentricity<\/li>\n\n\n\n<li>Runout<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Inspection\"><\/span>Final Inspection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Finished products undergo final inspection before shipment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inspection helps verify:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hardness requirements<\/li>\n\n\n\n<li>Critical dimensions<\/li>\n\n\n\n<li>Visual appearance<\/li>\n\n\n\n<li>Customer specifications<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Precision_Measuring_Equipment\"><\/span>Precision Measuring Equipment<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Inspection tools include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shore hardness testers<\/li>\n\n\n\n<li>Digital calipers<\/li>\n\n\n\n<li>Micrometers<\/li>\n\n\n\n<li>Height gauges<\/li>\n\n\n\n<li>Bore gauges<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Inspection records are maintained for full traceability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"767\" height=\"1024\" data-id=\"3463\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products-767x1024.webp\" alt=\"PEPSEN-first-article-inspection-for-polyurethane-products\" class=\"wp-image-3463\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products-767x1024.webp 767w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products-225x300.webp 225w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products-768x1025.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products-9x12.webp 9w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-first-article-inspection-for-polyurethane-products.webp 800w\" sizes=\"auto, (max-width: 767px) 100vw, 767px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"378\" data-id=\"3464\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products.webp\" alt=\"PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products\" class=\"wp-image-3464\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products-300x142.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products-768x363.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-hardness-inspection-by-durometer-for-polyurethane-products-18x9.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"514\" height=\"623\" data-id=\"3465\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-run-out-inspection-for-polyurethane-rollers-products.png\" alt=\"PEPSEN-run-out-inspection-for-polyurethane-rollers-products\" class=\"wp-image-3465\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-run-out-inspection-for-polyurethane-rollers-products.png 514w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-run-out-inspection-for-polyurethane-rollers-products-248x300.png 248w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/PEPSEN-run-out-inspection-for-polyurethane-rollers-products-10x12.png 10w\" sizes=\"auto, (max-width: 514px) 100vw, 514px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_7_Bond_Strength_Verification_for_Metal-Bonded_Parts\"><\/span>Step 7: Bond Strength Verification for Metal-Bonded Parts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcr <strong><a href=\"https:\/\/pepsenpu.com\/de\/kategorie\/produkte\/polyurethan-walzen-produkte\/\" data-type=\"link\" data-id=\"https:\/\/pepsenpu.com\/category\/products\/polyurethane-rollers-products\/\">Polyurethanrollen<\/a><\/strong>, wheels, and bonded assemblies, bond integrity is often more important than material strength itself.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our procedures include:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Surface_Preparation_Verification\"><\/span>Surface Preparation Verification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Metal substrates are checked for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cleanliness<\/li>\n\n\n\n<li>Surface roughness<\/li>\n\n\n\n<li>Preparation quality<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bonding_Process_Control\"><\/span>Bonding Process Control<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Each bonding stage follows documented procedures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bond_Failure_Analysis\"><\/span>Bond Failure Analysis<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If testing is performed, failure modes are evaluated to ensure proper adhesion performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-7 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"452\" data-id=\"3470\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-roller-core-sandblasting-for-roughness.webp\" alt=\"polyurethane-roller-core-sandblasting-for-roughness\" class=\"wp-image-3470\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-roller-core-sandblasting-for-roughness.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-roller-core-sandblasting-for-roughness-300x170.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-roller-core-sandblasting-for-roughness-768x434.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-roller-core-sandblasting-for-roughness-18x10.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"551\" data-id=\"3474\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-cores-sandblasting-for-roughness.webp\" alt=\"polyurethane-wheels-cores-sandblasting-for-roughness\" class=\"wp-image-3474\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-cores-sandblasting-for-roughness.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-cores-sandblasting-for-roughness-300x207.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-cores-sandblasting-for-roughness-768x529.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-cores-sandblasting-for-roughness-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"492\" data-id=\"3473\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-core-applying-bonding-agent-roughness.webp\" alt=\"polyurethane-wheels-core-applying-bonding-agent-roughness\" class=\"wp-image-3473\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-core-applying-bonding-agent-roughness.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-core-applying-bonding-agent-roughness-300x185.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-core-applying-bonding-agent-roughness-768x472.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheels-core-applying-bonding-agent-roughness-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_8_Final_Visual_Inspection\"><\/span>Step 8: Final Visual Inspection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every finished component undergoes final inspection before shipment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inspectors check for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Surface defects<\/li>\n\n\n\n<li>Air bubbles<\/li>\n\n\n\n<li>Voids<\/li>\n\n\n\n<li>Cracks<\/li>\n\n\n\n<li>Inclusions<\/li>\n\n\n\n<li>Flashing issues<\/li>\n\n\n\n<li>Color consistency<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Products failing inspection are segregated immediately.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-8 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"487\" data-id=\"3467\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Precision-Dimensional-Inspection-of-Polyurethane-Components.webp\" alt=\"Precision-Dimensional-Inspection-of-Polyurethane-Components\" class=\"wp-image-3467\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Precision-Dimensional-Inspection-of-Polyurethane-Components.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Precision-Dimensional-Inspection-of-Polyurethane-Components-300x183.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Precision-Dimensional-Inspection-of-Polyurethane-Components-768x468.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/Precision-Dimensional-Inspection-of-Polyurethane-Components-18x12.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"451\" height=\"800\" data-id=\"3462\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/bubbles-inspection-for-polyurethane-products.webp\" alt=\"bubbles-inspection-for-polyurethane-products\" class=\"wp-image-3462\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/bubbles-inspection-for-polyurethane-products.webp 451w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/bubbles-inspection-for-polyurethane-products-169x300.webp 169w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/bubbles-inspection-for-polyurethane-products-7x12.webp 7w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" data-id=\"3466\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-product-color-inspection.webp\" alt=\"polyurethane-product-color-inspection\" class=\"wp-image-3466\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-product-color-inspection.webp 600w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-product-color-inspection-225x300.webp 225w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-product-color-inspection-9x12.webp 9w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-9 is-layout-flex wp-block-gallery-is-layout-flex\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_9_Self-Developed_Application_Simulation_Test_Bench\"><\/span>Step 9: Self-Developed Application Simulation Test Bench<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For critical applications, laboratory testing alone is not always sufficient.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To better evaluate real-world performance, we have developed our own in-house simulation test bench for polyurethane wheels and other load-bearing components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Simulated_Test_Bench_for_Shield_Machine_PU_Wheels\"><\/span>Simulated Test Bench for Shield Machine PU Wheels<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Unser <a href=\"https:\/\/pepsenpu.com\/de\/shanghai-pepsen-lanciert-die-weltweit-erste-abschirmungsmaschine-fur-schwerlastrader-aus-polyurethan-simulationsprufstand-pepsen-technologie-befahigt-nationale-schwergerate\/\" data-type=\"link\" data-id=\"https:\/\/pepsenpu.com\/shanghai-pepsen-launches-worlds-first-shield-machine-heavy-duty-polyurethane-wheels-simulation-test-bench-pepsen-technology-empowers-national-heavy-equipment\/\"><strong>self-developed polyurethane wheel life-span testing system<\/strong><\/a> is designed to simulate the demanding operating conditions experienced by polyurethane wheels used in shield machines and tunnel boring equipment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Testing may evaluate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Belastbarkeit<\/li>\n\n\n\n<li>Rolling resistance<\/li>\n\n\n\n<li>Heat build-up<\/li>\n\n\n\n<li>Verschlei\u00dffestigkeit<\/li>\n\n\n\n<li>Compression behavior<\/li>\n\n\n\n<li>Dynamic fatigue performance<\/li>\n\n\n\n<li>Polyurethane-to-metal bond integrity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By reproducing actual working conditions, potential issues can be identified before field installation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Application_Simulation_Matters\"><\/span>Why Application Simulation Matters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Material properties alone cannot fully predict service life.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Real-world performance is influenced by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuous loading<\/li>\n\n\n\n<li>Repeated rolling cycles<\/li>\n\n\n\n<li>Dynamic impacts<\/li>\n\n\n\n<li>Heat generation<\/li>\n\n\n\n<li>Environmental conditions<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Our simulation testing helps verify product reliability and provides valuable data for material selection, design optimization, and service life prediction.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-10 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3472\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-machine.webp\" alt=\"polyurethane-wheel-life-span-testing-machine\" class=\"wp-image-3472\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-machine.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-machine-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-machine-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-machine-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" data-id=\"3471\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing.webp\" alt=\"polyurethane-wheel-life-span-testing\" class=\"wp-image-3471\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-300x225.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-768x576.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/polyurethane-wheel-life-span-testing-16x12.webp 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"415\" data-id=\"3476\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels.webp\" alt=\"simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels\" class=\"wp-image-3476\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels-300x156.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels-768x398.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-support-wheels-18x9.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"376\" data-id=\"3475\" src=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels.webp\" alt=\"simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels\" class=\"wp-image-3475\" srcset=\"https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels.webp 800w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels-300x141.webp 300w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels-768x361.webp 768w, https:\/\/pepsenpu.com\/wp-content\/uploads\/2026\/06\/simulated-test-bench-for-the-working-conditions-of-shield-machine-PU-wheels-18x8.webp 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Full_Batch_Traceability\"><\/span>Full Batch Traceability<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most important aspects of industrial quality control is traceability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Each production batch can be linked back to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Raw material lots<\/li>\n\n\n\n<li>Production records<\/li>\n\n\n\n<li>Processing parameters<\/li>\n\n\n\n<li>Curing oven no., curing time and data<\/li>\n\n\n\n<li>Inspection reports<\/li>\n\n\n\n<li>Manufacturing date<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This allows rapid investigation should any issue arise in the field.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>H\u00e4ufig gestellte Fragen<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_you_ensure_consistency_between_production_batches\"><\/span>How do you ensure consistency between production batches?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We maintain controlled formulations, documented process parameters, incoming material verification, and routine laboratory testing to minimize batch-to-batch variation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_you_provide_inspection_reports\"><\/span>Do you provide inspection reports?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Inspection reports and material test data can be provided according to project requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_you_test_custom_performance_requirements\"><\/span>Can you test custom performance requirements?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Depending on application requirements, additional testing can often be arranged to verify specific performance criteria.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_is_moisture_control_so_important_in_polyurethane_manufacturing\"><\/span>Why is moisture control so important in polyurethane manufacturing?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Moisture reacts with isocyanates and can create internal bubbles, porosity, reduced mechanical properties, and premature product failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Is_hardness_the_most_important_polyurethane_property\"><\/span>Is hardness the most important polyurethane property?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Hardness is only one indicator. Abrasion resistance, compression set, tear strength, tensile properties, and dynamic performance are often equally important.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quality_Is_Built_Into_the_Process\"><\/span>Quality Is Built Into the Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For industrial polyurethane products, quality cannot be inspected into a part after production is complete.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It must be controlled from the moment raw materials arrive until the finished product leaves the factory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our in-house laboratory, documented QC procedures, and process controls are designed to deliver consistent, reliable polyurethane components that perform in demanding industrial environments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For engineers, maintenance teams, and procurement professionals, this means fewer unexpected failures, longer service life, and greater confidence in every component delivered.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>When sourcing custom cast polyurethane products, most buyers focus on material hardness, tensile strength, or pricing. However, experienced engineers know that the real challenge is consistency. Two polyurethane parts may look identical, share the same hardness rating, and even come from the same supplier. Yet one lasts five years while the other fails within months. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[48,3],"tags":[],"class_list":["post-3444","post","type-post","status-publish","format-standard","hentry","category-blog","category-newsblog"],"_links":{"self":[{"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/posts\/3444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/comments?post=3444"}],"version-history":[{"count":10,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/posts\/3444\/revisions"}],"predecessor-version":[{"id":3479,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/posts\/3444\/revisions\/3479"}],"wp:attachment":[{"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/media?parent=3444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/categories?post=3444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pepsenpu.com\/de\/wp-json\/wp\/v2\/tags?post=3444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}