{"id":12179,"date":"2025-10-14T06:32:31","date_gmt":"2025-10-14T06:32:31","guid":{"rendered":"https:\/\/www.retopz.com\/?p=12179"},"modified":"2025-10-14T07:13:07","modified_gmt":"2025-10-14T07:13:07","slug":"the-manufacturing-process-of-tungsten-carbide-bushings-explained","status":"publish","type":"post","link":"https:\/\/www.retopz.com\/ja\/the-manufacturing-process-of-tungsten-carbide-bushings-explained\/","title":{"rendered":"The Manufacturing Process of Tungsten Carbide Bushings Explained"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"12179\" class=\"elementor elementor-12179\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fefc553 e-flex e-con-boxed e-con e-parent\" data-id=\"fefc553\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d1fade1 elementor-widget elementor-widget-text-editor\" data-id=\"d1fade1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\"><a href=\"https:\/\/www.retopz.com\/ja\/carbide-bushings-and-sleeves\/\" target=\"_blank\" rel=\"noopener\">\u30bf\u30f3\u30b0\u30b9\u30c6\u30f3\u30ab\u30fc\u30d0\u30a4\u30c9\u30d6\u30c3\u30b7\u30f3\u30b0<\/a> are small components with a big impact. They provide <a href=\"https:\/\/www.retopz.com\/ja\/wear-resistance-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u8010\u6469\u8017\u6027<\/a>, strength, and reliability in high-pressure and high-friction systems such as pumps, compressors, and turbines.<\/p><p class=\"p1\">Behind every finished bushing is a complex manufacturing process that turns fine tungsten and metal powders into a precision-engineered part.<\/p><p class=\"p1\">Each step \u2014 from powder preparation to final polishing \u2014 determines how long the bushing will last in service.<\/p><p class=\"p1\">In this article, we\u2019ll explain the complete manufacturing process of tungsten carbide bushings in simple terms, highlight why each step matters, and show how strict process control ensures durability and precision.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ae85321 e-flex e-con-boxed e-con e-parent\" data-id=\"ae85321\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da8d2e0 elementor-widget elementor-widget-text-editor\" data-id=\"da8d2e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Raw Material Selection<\/b><\/h2><p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-12158 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-1.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-1.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-1-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-1-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">The process begins with choosing the right <a href=\"https:\/\/www.retopz.com\/ja\/understanding-powder-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">tungsten carbide (WC) powder<\/a> and binder metal. The most common binders are cobalt (Co) and nickel (Ni).<\/p><p class=\"p3\">The combination ratio affects <a href=\"https:\/\/www.retopz.com\/ja\/hardness-in-the-tungsten-carbide-industry-a-comprehensive-definition\/\" target=\"_blank\" rel=\"noopener\">\u786c\u5ea6<\/a>,<a href=\"https:\/\/www.retopz.com\/ja\/toughness-in-the-tungsten-carbide-industry-a-comprehensive-definition\/\" target=\"_blank\" rel=\"noopener\"> \u5f37\u976d\u3055<\/a>\u3001 \u305d\u3057\u3066 <a href=\"https:\/\/www.retopz.com\/ja\/corrosion-resistance-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u8010\u8150\u98df\u6027<\/a>. Fine-grain powders are used for bushings that need high strength and mirror surface finishes.<\/p><p class=\"p4\"><b>1). Common Powder Composition<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d5b4422 e-flex e-con-boxed e-con e-parent\" data-id=\"d5b4422\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-611a0da elementor-widget elementor-widget-text-editor\" data-id=\"611a0da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table style=\"border-collapse:collapse;width:100%;color:#000;\">\n  <thead>\n    <tr style=\"background-color:#00274d;color:#fff;\">\n      <th style=\"border:1px solid #00274d;padding:8px;\">\u6210\u5206<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Weight Percentage<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">\u95a2\u6570<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">Tungsten Carbide (WC)<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">88\u201394%<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Provides hardness and wear resistance<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u30b3\u30d0\u30eb\u30c8\uff08Co\uff09<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">6\u201312%<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Adds toughness and bonding strength<\/td>\n    <\/tr>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u30cb\u30c3\u30b1\u30eb\uff08Ni\uff09<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">6\u201310% (optional)<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Improves corrosion resistance<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a6db1d5 e-flex e-con-boxed e-con e-parent\" data-id=\"a6db1d5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e1cb00 elementor-widget elementor-widget-text-editor\" data-id=\"2e1cb00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">The right balance between WC and binder defines how the bushing will perform \u2014 a higher binder content improves toughness, while a lower one increases hardness.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a5ac632 e-flex e-con-boxed e-con e-parent\" data-id=\"a5ac632\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-edc698a elementor-widget elementor-widget-text-editor\" data-id=\"edc698a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Powder Mixing and Homogenization<\/b><\/h2><p><img decoding=\"async\" class=\"alignnone wp-image-12159 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-2.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-2.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-2-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-2-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">The selected powders are mixed in a ball mill with a small amount of ethanol or paraffin as a binder liquid. The goal is to achieve uniform particle distribution.<\/p><p class=\"p3\">This step ensures that the final carbide has consistent <a href=\"https:\/\/www.retopz.com\/ja\/density-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u5bc6\u5ea6<\/a> and mechanical properties across the entire part.<\/p><ul class=\"ul1\"><li class=\"li3\"><p>Duration: 24\u201348 hours<\/p><\/li><li class=\"li3\"><p>Outcome: Fine, evenly mixed powder ready for pressing<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2d90479 e-flex e-con-boxed e-con e-parent\" data-id=\"2d90479\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e5cc904 elementor-widget elementor-widget-text-editor\" data-id=\"e5cc904\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Spray Drying and Granulation<\/b><\/h2><p><img decoding=\"async\" class=\"alignnone wp-image-12160 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-3.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-3.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-3-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-3-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">The mixed slurry is fed into a spray dryer, where hot air converts it into free-flowing spherical granules.<\/p><p class=\"p3\">These granules are easy to press and maintain consistent <a href=\"https:\/\/www.retopz.com\/ja\/density-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u5bc6\u5ea6<\/a> during compaction.<\/p><p class=\"p3\">This step avoids segregation and helps achieve uniform shrinkage during sintering later.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ea2a042 e-flex e-con-boxed e-con e-parent\" data-id=\"ea2a042\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cacddf8 elementor-widget elementor-widget-text-editor\" data-id=\"cacddf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Pressing and Compact Forming<\/b><\/h2><p class=\"p2\">The powder is compacted into a rough ring shape called a green compact using hydraulic or isostatic pressing.<\/p><p class=\"p3\"><b>Pressing Parameters<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dac19f8 e-flex e-con-boxed e-con e-parent\" data-id=\"dac19f8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38e77c6 elementor-widget elementor-widget-text-editor\" data-id=\"38e77c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table style=\"border-collapse:collapse;width:100%;color:#000;\">\n  <thead>\n    <tr style=\"background-color:#00274d;color:#fff;\">\n      <th style=\"border:1px solid #00274d;padding:8px;\">Pressing Method<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Pressure<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Shape Accuracy<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">Uniaxial Pressing<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">150\u2013250 MPa<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Good (for simple shapes)<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">Cold Isostatic Pressing (CIP)<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">200\u2013300 MPa<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Excellent (uniform density)<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ff6df87 e-flex e-con-boxed e-con e-parent\" data-id=\"ff6df87\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce858cf elementor-widget elementor-widget-text-editor\" data-id=\"ce858cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">The green compact at this stage is still fragile, with a porosity level of 40\u201350%.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0d2a6f2 e-flex e-con-boxed e-con e-parent\" data-id=\"0d2a6f2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e2ccd37 elementor-widget elementor-widget-text-editor\" data-id=\"e2ccd37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Sintering \u2014 Turning Powder into Solid Metal<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12161 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-4.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-4.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-4-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-4-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">The green rings are placed in a vacuum or hydrogen sintering furnace and heated to around 1350\u20131500\u00b0C.<\/p><p class=\"p3\">During this stage:<\/p><ul class=\"ul1\"><li class=\"li3\"><p>The binder metal melts and bonds WC grains.<\/p><\/li><li class=\"li3\"><p>\u306e <a href=\"https:\/\/www.retopz.com\/ja\/porosity-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u6c17\u5b54\u7387<\/a> disappears.<\/p><\/li><li class=\"li3\"><p><a href=\"https:\/\/www.retopz.com\/ja\/density-in-the-tungsten-carbide-industry-an-explanatory-overview\/\" target=\"_blank\" rel=\"noopener\">\u5bc6\u5ea6<\/a> reaches over 99% of theoretical value.<\/p><\/li><\/ul><p class=\"p3\">The shrinkage during sintering is around 18\u201322%, which is why accurate dimension control during pressing is essential.<\/p><p class=\"p3\">After sintering, the bushings become extremely hard and ready for rough machining.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2fa9996 e-flex e-con-boxed e-con e-parent\" data-id=\"2fa9996\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2669fac elementor-widget elementor-widget-text-editor\" data-id=\"2669fac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Rough and Finish Machining<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12162 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-5.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-5.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-5-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-5-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">After sintering, the bushing is hard enough to require diamond tools for machining.<\/p><ul class=\"ul1\"><li class=\"li3\"><p>Rough grinding shapes the outer and inner diameters.<\/p><\/li><li class=\"li3\"><p>Fine grinding achieves closer tolerances.<\/p><\/li><li class=\"li3\"><p>The bushing\u2019s concentricity and roundness are maintained within microns.<\/p><\/li><\/ul><p class=\"p3\">This stage defines the final geometry before surface finishing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a87f785 e-flex e-con-boxed e-con e-parent\" data-id=\"a87f785\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5f81df4 elementor-widget elementor-widget-text-editor\" data-id=\"5f81df4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Stress Relief Heat Treatment<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12163 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-6.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-6.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-6-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-6-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Residual stresses from grinding are removed through low-temperature annealing (600\u2013800\u00b0C).<\/p><p class=\"p3\">This prevents micro-cracks and dimensional warping in later stages, ensuring that the bushing maintains flatness during operation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8826c76 e-flex e-con-boxed e-con e-parent\" data-id=\"8826c76\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4c341b9 elementor-widget elementor-widget-text-editor\" data-id=\"4c341b9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Lapping and Polishing<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12164 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-7.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-7.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-7-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-7-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">This step creates the mirror-smooth surfaces that tungsten carbide bushings are known for.<\/p><p class=\"p3\">Using diamond abrasives and precise lapping machines, the surface roughness is reduced to Ra \u2264 0.05 \u00b5m.<\/p><p class=\"p3\">Polishing ensures:<\/p><ul class=\"ul1\"><li class=\"li3\"><p>Minimal friction between moving parts<\/p><\/li><li class=\"li3\"><p>Long seal life<\/p><\/li><li class=\"li3\"><p>Better fluid film stability<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2e24ec e-flex e-con-boxed e-con e-parent\" data-id=\"e2e24ec\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9bc1d41 elementor-widget elementor-widget-text-editor\" data-id=\"9bc1d41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Inspection and Quality Control<\/b><\/h2><p class=\"p2\">Every bushing undergoes strict testing for dimensions, density, and flatness.<\/p><p class=\"p3\"><b>1). Inspection Checklist<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d1a9b52 e-flex e-con-boxed e-con e-parent\" data-id=\"d1a9b52\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f30d8df elementor-widget elementor-widget-text-editor\" data-id=\"f30d8df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table style=\"border-collapse:collapse;width:100%;color:#000;\">\n  <thead>\n    <tr style=\"background-color:#00274d;color:#fff;\">\n      <th style=\"border:1px solid #00274d;padding:8px;\">\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Typical Standard<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Test Method<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u786c\u5ea6<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">88\uff5e92 HRA<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Rockwell A test<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u5bc6\u5ea6<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u2265 14.0 g\/cm\u00b3<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Archimedes method<\/td>\n    <\/tr>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u5e73\u5766\u6027<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u2264 0.3 \u00b5m<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Optical interferometer<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u8868\u9762\u4ed5\u4e0a\u3052<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Ra \u2264 0.05 \u00b5m<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u30d7\u30ed\u30d5\u30a1\u30a4\u30ed\u30e1\u30fc\u30bf\u30fc<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1d4085a e-flex e-con-boxed e-con e-parent\" data-id=\"1d4085a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b2c3c98 elementor-widget elementor-widget-text-editor\" data-id=\"b2c3c98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Only bushings meeting all these standards move to the final packaging stage.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-34a69ab e-flex e-con-boxed e-con e-parent\" data-id=\"34a69ab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-82a9bad elementor-widget elementor-widget-text-editor\" data-id=\"82a9bad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>Cleaning and Packaging<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12165 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-8.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-8.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-8-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-8-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Before shipping, each bushing is ultrasonically cleaned using deionized water or alcohol to remove oil and particles.<\/p><p class=\"p3\">After drying, they are sealed in anti-static vacuum packaging to prevent corrosion and dust contamination.<\/p><p class=\"p3\">This ensures they arrive ready for installation in clean or precision applications, including pumps, compressors, and turbines.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-69a73bb e-flex e-con-boxed e-con e-parent\" data-id=\"69a73bb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a478a02 elementor-widget elementor-widget-text-editor\" data-id=\"a478a02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>End-to-End Process Summary<\/b><\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f71c81b e-flex e-con-boxed e-con e-parent\" data-id=\"f71c81b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e283913 elementor-widget elementor-widget-text-editor\" data-id=\"e283913\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table style=\"border-collapse:collapse;width:100%;color:#000;\">\n  <thead>\n    <tr style=\"background-color:#00274d;color:#fff;\">\n      <th style=\"border:1px solid #00274d;padding:8px;\">Step<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">Process Description<\/th>\n      <th style=\"border:1px solid #00274d;padding:8px;\">\u76ee\u7684<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">1<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Powder selection<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Defines final strength and toughness<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">2<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Mixing and granulation<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Ensures even particle distribution<\/td>\n    <\/tr>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">3<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u62bc\u3059<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Forms the green compact<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">4<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">\u713c\u7d50<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Creates full density and strength<\/td>\n    <\/tr>\n    <tr style=\"background-color:#ffffff;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">5<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Grinding and polishing<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Achieves final geometry and finish<\/td>\n    <\/tr>\n    <tr style=\"background-color:#dce3f0;\">\n      <td style=\"border:1px solid #00274d;padding:8px;\">6<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Inspection and cleaning<\/td>\n      <td style=\"border:1px solid #00274d;padding:8px;\">Guarantees quality and precision<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d3221dc e-flex e-con-boxed e-con e-parent\" data-id=\"d3221dc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ca57f0 elementor-widget elementor-widget-text-editor\" data-id=\"5ca57f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"p1\"><b>\u7d50\u8ad6<\/b><\/h2><p class=\"p2\">The manufacturing process of tungsten carbide bushings is a precise balance of material science, process control, and quality assurance.<\/p><p class=\"p2\">Every step \u2014 from powder preparation to polishing \u2014 determines the performance, durability, and reliability of the final product.<\/p><p class=\"p2\">For decision-makers, understanding this workflow helps identify trusted suppliers capable of meeting strict tolerances and delivering consistent quality for high-demand industrial systems.<\/p><p class=\"p3\">\u4f01\u696d\u306e\u8a73\u7d30\u3092\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<a href=\"https:\/\/www.retopz.com\/ja\/contact\/\" target=\"_blank\" rel=\"noopener\"> \u304a\u554f\u3044\u5408\u308f\u305b\u3002<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Tungsten carbide bushings are small components with a big impact. They provide wear resistance, strength, and reliability in high-pressure and high-friction systems such as pumps, compressors, and turbines. Behind every finished bushing is a complex manufacturing process that turns fine tungsten and metal powders into a precision-engineered part. Each step \u2014 from powder preparation to final polishing \u2014 determines how long the bushing will last in service. In this article, we\u2019ll explain the complete manufacturing process of tungsten carbide bushings in simple terms, highlight why each step matters, and show how strict process control ensures durability and precision. Raw Material Selection The process begins with choosing the right tungsten carbide [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":12158,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carbide-academy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tungsten Carbide Bushings Manufacturing Process<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.retopz.com\/ja\/the-manufacturing-process-of-tungsten-carbide-bushings-explained\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Manufacturing Process of Tungsten Carbide Bushings Explained\" \/>\n<meta property=\"og:description\" content=\"Tungsten carbide bushings are small components with a big impact. They provide wear resistance, strength, and reliability in high-pressure and high-friction systems such as pumps, compressors, and turbines. Behind every finished bushing is a complex manufacturing process that turns fine tungsten and metal powders into a precision-engineered part. Each step \u2014 from powder preparation to final polishing \u2014 determines how long the bushing will last in service. In this article, we\u2019ll explain the complete manufacturing process of tungsten carbide bushings in simple terms, highlight why each step matters, and show how strict process control ensures durability and precision. Raw Material Selection The process begins with choosing the right tungsten carbide [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.retopz.com\/ja\/the-manufacturing-process-of-tungsten-carbide-bushings-explained\/\" \/>\n<meta property=\"og:site_name\" content=\"Retop Carbide\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-14T06:32:31+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-14T07:13:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/10\/The-Manufacturing-Process-of-Tungsten-Carbide-Bushings-Explained-www.retopz.com-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"660\" \/>\n\t<meta property=\"og:image:height\" content=\"440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"luo jing\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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