{"id":14571,"date":"2025-12-11T03:25:38","date_gmt":"2025-12-11T03:25:38","guid":{"rendered":"https:\/\/www.retopz.com\/?p=14571"},"modified":"2025-12-11T03:59:17","modified_gmt":"2025-12-11T03:59:17","slug":"why-tungsten-carbide-bushings-crack-root-causes-and-fixes","status":"publish","type":"post","link":"https:\/\/www.retopz.com\/fr\/why-tungsten-carbide-bushings-crack-root-causes-and-fixes\/","title":{"rendered":"Pourquoi les bagues en carbure de tungst\u00e8ne se fissurent\u00a0: causes profondes et solutions"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14571\" class=\"elementor elementor-14571\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9bd555b e-flex e-con-boxed e-con e-parent\" data-id=\"9bd555b\" 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-85841e0 elementor-widget elementor-widget-text-editor\" data-id=\"85841e0\" 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\/fr\/carbide-bushings-and-sleeves\/\" target=\"_blank\" rel=\"noopener\">bagues en carbure de tungst\u00e8ne<\/a> sont connus pour leur haute <a href=\"https:\/\/www.retopz.com\/fr\/hardness-in-the-tungsten-carbide-industry-a-comprehensive-definition\/\" target=\"_blank\" rel=\"noopener\">duret\u00e9<\/a> et une longue dur\u00e9e de vie. Mais elles peuvent tout de m\u00eame se fissurer si les conditions de travail ou les \u00e9tapes d&#039;installation ne sont pas correctes.<\/p><p class=\"p1\">Les fissures r\u00e9duisent les performances et peuvent entra\u00eener une panne de la pompe ou de la machine. Ce guide explique les principales causes de fissures dans ces bagues et les mesures \u00e0 prendre pour \u00e9viter ces probl\u00e8mes.<\/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-c9e9f7a e-flex e-con-boxed e-con e-parent\" data-id=\"c9e9f7a\" 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-ee91097 elementor-widget elementor-widget-text-editor\" data-id=\"ee91097\" 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>Comprendre pourquoi des fissures se forment dans le carbure de tungst\u00e8ne<\/b><\/h2><p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-14564 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-1.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-1.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-1-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-1-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Le carbure de tungst\u00e8ne est tr\u00e8s dur, mais aussi cassant. Cela signifie qu&#039;il r\u00e9siste \u00e0 l&#039;usure mais ne supporte pas les chocs violents ni les fortes contraintes.<\/p><p class=\"p3\">Lorsqu&#039;une bague est soumise \u00e0 une force pour laquelle elle n&#039;a pas \u00e9t\u00e9 con\u00e7ue, des fissures peuvent se former, notamment pr\u00e8s des bords ou des parois minces.<\/p><p class=\"p4\"><b>Caract\u00e9ristiques cl\u00e9s qui influencent la fissuration<\/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-dcd18d1 e-flex e-con-boxed e-con e-parent\" data-id=\"dcd18d1\" 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-08428be elementor-widget elementor-widget-text-editor\" data-id=\"08428be\" 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 border=\"1\" cellspacing=\"0\" cellpadding=\"6\">\n<tr style=\"background-color:#00274d;color:#ffffff;\">\n<th>Propri\u00e9t\u00e9 mat\u00e9rielle<\/th><th>Influence sur la fissuration<\/th>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Duret\u00e9 \u00e9lev\u00e9e<\/td><td>Forte r\u00e9sistance \u00e0 l&#039;usure mais faible tol\u00e9rance aux chocs<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>Fragilit\u00e9<\/td><td>Des fissures se forment sous l&#039;effet de charges ou de chocs soudains.<\/td>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Sensibilit\u00e9 thermique<\/td><td>Les changements rapides de temp\u00e9rature augmentent le stress<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>Type de liant<\/td><td>Les aciers WC-Co et WC-Ni r\u00e9agissent diff\u00e9remment \u00e0 la corrosion et \u00e0 la fatigue.<\/td>\n<\/tr>\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-1eb38d2 e-flex e-con-boxed e-con e-parent\" data-id=\"1eb38d2\" 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-b9bc340 elementor-widget elementor-widget-text-editor\" data-id=\"b9bc340\" 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>Cause premi\u00e8re : Conditions d&#039;ajustement par pression incorrectes<\/b><\/h2><p><img decoding=\"async\" class=\"alignnone wp-image-14565 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-2.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-2.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-2-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-2-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Le montage par pression est une m\u00e9thode d&#039;installation courante, mais un serrage excessif ou une force in\u00e9gale peuvent engendrer des contraintes circonf\u00e9rentielles importantes dans la bague. Ces contraintes s&#039;accumulent et provoquent des fissures apr\u00e8s l&#039;installation ou en cours d&#039;utilisation.<\/p><p class=\"p4\"><b>1) Signes de fissuration par emmanchement forc\u00e9<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Des fissures se forment sur la surface ext\u00e9rieure.<\/p><\/li><li class=\"li3\"><p>La bague se serre ou se d\u00e9forme<\/p><\/li><li class=\"li3\"><p>\u00c9caillage sur les bords<\/p><\/li><li class=\"li3\"><p>Panne soudaine apr\u00e8s le d\u00e9marrage<\/p><\/li><\/ul><p class=\"p4\"><b>2) Erreurs courantes lors de l&#039;ajustement par pression<\/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-07eae1b e-flex e-con-boxed e-con e-parent\" data-id=\"07eae1b\" 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-f87ead3 elementor-widget elementor-widget-text-editor\" data-id=\"f87ead3\" 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 border=\"1\" cellspacing=\"0\" cellpadding=\"6\">\n<tr style=\"background-color:#00274d;color:#ffffff;\">\n<th>Erreur<\/th><th>Effet<\/th>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Trop d&#039;interf\u00e9rence<\/td><td>Contrainte excessive sur la bague<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>Martelage au lieu de pression contr\u00f4l\u00e9e<\/td><td>fissures dues \u00e0 un choc<\/td>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Aucune lubrification pendant la pression<\/td><td>Chargement irr\u00e9gulier, rayures, fissures<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>D\u00e9faut d&#039;alignement lors de l&#039;ajustement par pression<\/td><td>La bague s&#039;incline et se fissure sur les bords.<\/td>\n<\/tr>\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-3b5df9e e-flex e-con-boxed e-con e-parent\" data-id=\"3b5df9e\" 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-6f99d87 elementor-widget elementor-widget-text-editor\" data-id=\"6f99d87\" 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>Cause premi\u00e8re : D\u00e9salignement entre l&#039;arbre et le logement<\/b><\/h2><p><img decoding=\"async\" class=\"alignnone wp-image-14566 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-3.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-3.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-3-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-3-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Si l&#039;arbre n&#039;est pas centr\u00e9 dans la douille, la charge se r\u00e9partit de mani\u00e8re in\u00e9gale. Un c\u00f4t\u00e9 supporte une pression plus importante, ce qui engendre des contraintes de flexion et des fissures superficielles.<\/p><p class=\"p4\"><b>1) Sympt\u00f4mes de fissures dues \u00e0 un mauvais alignement<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Marques d&#039;usure sur un seul c\u00f4t\u00e9<\/p><\/li><li class=\"li3\"><p>Motif d&#039;usure non circulaire<\/p><\/li><li class=\"li3\"><p>Vibrations pr\u00e9coces<\/p><\/li><li class=\"li3\"><p>Fissures verticales ou obliques le long de l&#039;al\u00e9sage<\/p><\/li><\/ul><p class=\"p4\"><b>2) Sources typiques de d\u00e9salignement<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Erreurs d&#039;usinage des arbres<\/p><\/li><li class=\"li3\"><p>Al\u00e9sage du logement non perpendiculaire<\/p><\/li><li class=\"li3\"><p>distorsion du ch\u00e2ssis de la machine<\/p><\/li><li class=\"li3\"><p>Dommages au si\u00e8ge de roulement<\/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-155a508 e-flex e-con-boxed e-con e-parent\" data-id=\"155a508\" 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-0df53c2 elementor-widget elementor-widget-text-editor\" data-id=\"0df53c2\" 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>Cause premi\u00e8re : Choc thermique et stress thermique<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14567 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-4.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-4.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-4-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-4-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Le carbure de tungst\u00e8ne se dilate moins que l&#039;acier ou la fonte. En cas de variation rapide de temp\u00e9rature, la bague peut se fissurer sous l&#039;effet du choc thermique.<\/p><p class=\"p3\">Cela se produit souvent dans les pompes qui font circuler un fluide chaud ou qui subissent un refroidissement soudain.<\/p><p class=\"p4\"><b>1) Conditions de fissuration li\u00e9es \u00e0 la temp\u00e9rature<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Refroidissement rapide par l&#039;eau froide lors de la chasse d&#039;eau<\/p><\/li><li class=\"li3\"><p>Abaissement du liquide, puis refroidissement soudain.<\/p><\/li><li class=\"li3\"><p>Chauffage d\u00fb au frottement caus\u00e9 par une mauvaise lubrification<\/p><\/li><\/ul><p class=\"p4\"><b>2) Limites thermiques recommand\u00e9es<\/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-63eab67 e-flex e-con-boxed e-con e-parent\" data-id=\"63eab67\" 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-57361a0 elementor-widget elementor-widget-text-editor\" data-id=\"57361a0\" 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 border=\"1\" cellspacing=\"0\" cellpadding=\"6\">\n<tr style=\"background-color:#00274d;color:#ffffff;\">\n<th>Condition<\/th><th>Recommandation<\/th>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>hausse des temp\u00e9ratures<\/td><td>Gardez votre rythme, \u00e9vitez les pics rapides.<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>Refroidissement<\/td><td>Pas d&#039;exposition rapide \u00e0 l&#039;eau froide<\/td>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Chaleur \u00e0 sec<\/td><td>Arr\u00eatez l&#039;\u00e9quipement avant que la temp\u00e9rature ne devienne trop \u00e9lev\u00e9e.<\/td>\n<\/tr>\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-c6fd272 e-flex e-con-boxed e-con e-parent\" data-id=\"c6fd272\" 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-c1bd591 elementor-widget elementor-widget-text-editor\" data-id=\"c1bd591\" 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>Cause premi\u00e8re : Corrosion et attaque du liant<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14568 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-5.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-5.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-5-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-5-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Bien que le carbure de tungst\u00e8ne soit stable, son m\u00e9tal liant (Co ou Ni) est vuln\u00e9rable dans certains fluides.<\/p><p class=\"p3\">Si le liant se corrode, la structure s&#039;affaiblit. Des fissures se forment alors sous une charge normale car le mat\u00e9riau perd de sa t\u00e9nacit\u00e9.<\/p><p class=\"p4\"><b>1) Fluides augmentant le risque de fissuration<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Eau \u00e0 forte teneur en chlorure<\/p><\/li><li class=\"li3\"><p>Fluides acides ou \u00e0 faible pH<\/p><\/li><li class=\"li3\"><p>Nettoyants alcalins puissants<\/p><\/li><li class=\"li3\"><p>Eau sal\u00e9e \u00e0 forte teneur en oxyg\u00e8ne<\/p><\/li><\/ul><p class=\"p4\"><b>2) Comment l&#039;attaque des liants entra\u00eene la fissuration<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>La corrosion commence au niveau du liant.<\/p><\/li><li class=\"li3\"><p>Les joints de grains s&#039;affaiblissent.<\/p><\/li><li class=\"li3\"><p>Des microfissures se forment.<\/p><\/li><li class=\"li3\"><p>Les fissures se propagent sous la charge.<\/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-309c8e9 e-flex e-con-boxed e-con e-parent\" data-id=\"309c8e9\" 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-d65dfb7 elementor-widget elementor-widget-text-editor\" data-id=\"d65dfb7\" 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>Cause premi\u00e8re : Dommages li\u00e9s \u00e0 l&#039;impact et \u00e0 la manutention<\/b><\/h2><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14569 size-full\" src=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-6.jpg\" alt=\"\" width=\"660\" height=\"440\" srcset=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-6.jpg 660w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-6-300x200.jpg 300w, https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-www.retopz.com-6-18x12.jpg 18w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/p><p class=\"p3\">Le carbure de tungst\u00e8ne s&#039;\u00e9caille facilement en cas de chute ou de choc. De nombreuses fissures apparaissent avant m\u00eame l&#039;installation de la bague en raison d&#039;une mauvaise manipulation lors du transport, du stockage ou du d\u00e9ballage.<\/p><p class=\"p4\"><b>1) Erreurs de manipulation courantes<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Laisser tomber la bague sur une surface dure<\/p><\/li><li class=\"li3\"><p>Permettre aux bagues de se heurter les unes aux autres<\/p><\/li><li class=\"li3\"><p>Utiliser des outils m\u00e9talliques qui frappent les bords<\/p><\/li><li class=\"li3\"><p>Stockage sans rembourrage<\/p><\/li><\/ul><p class=\"p4\"><b>2) Indicateurs pr\u00e9coces de fissures<\/b><\/p><ul class=\"ul1\"><li class=\"li3\"><p>Petits \u00e9clats sur le bord<\/p><\/li><li class=\"li3\"><p>Fissures capillaires visibles sous grossissement<\/p><\/li><li class=\"li3\"><p>L\u00e9g\u00e8re d\u00e9formation aux angles<\/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-fd1c3d5 e-flex e-con-boxed e-con e-parent\" data-id=\"fd1c3d5\" 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-a4de710 elementor-widget elementor-widget-text-editor\" data-id=\"a4de710\" 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>Comment r\u00e9parer ou pr\u00e9venir les fissures dans les bagues en carbure de tungst\u00e8ne<\/b><\/h2><p class=\"p2\">La pr\u00e9vention des fissures commence par la compr\u00e9hension de la mani\u00e8re dont les contraintes s&#039;exercent sur la bague. Une installation correcte, des conditions de fonctionnement ma\u00eetris\u00e9es et un choix judicieux des mat\u00e9riaux permettent de r\u00e9soudre la plupart des probl\u00e8mes avant m\u00eame qu&#039;ils ne surviennent.<\/p><p class=\"p3\"><b>Solutions et mesures pr\u00e9ventives<\/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-703e9d7 e-flex e-con-boxed e-con e-parent\" data-id=\"703e9d7\" 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-819b473 elementor-widget elementor-widget-text-editor\" data-id=\"819b473\" 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 border=\"1\" cellspacing=\"0\" cellpadding=\"6\">\n<tr style=\"background-color:#00274d; color:#ffffff;\">\n<th>Probl\u00e8me<\/th><th>Solution<\/th>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Fissuration par pression<\/td><td>Utilisez des valeurs d&#039;interf\u00e9rence appropri\u00e9es et une pression contr\u00f4l\u00e9e<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>D\u00e9salignement<\/td><td>V\u00e9rifier la g\u00e9om\u00e9trie de l&#039;arbre et du logement avant l&#039;assemblage<\/td>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>choc thermique<\/td><td>Contr\u00f4lez les variations de temp\u00e9rature et \u00e9vitez le fonctionnement \u00e0 sec.<\/td>\n<\/tr>\n<tr style=\"background-color:#e6f0fa;\">\n<td>Corrosion du liant<\/td><td>S\u00e9lectionnez les nuances WC-Ni ou r\u00e9sistantes \u00e0 la corrosion<\/td>\n<\/tr>\n<tr style=\"background-color:#ffffff;\">\n<td>Dommages caus\u00e9s par l&#039;impact<\/td><td>Am\u00e9liorer l&#039;emballage et la manutention<\/td>\n<\/tr>\n<\/table>\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-0541cd0 e-flex e-con-boxed e-con e-parent\" data-id=\"0541cd0\" 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-4c8c2e6 elementor-widget elementor-widget-text-editor\" data-id=\"4c8c2e6\" 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>Conclusion<\/b><\/h2><p class=\"p2\">Les fissures peuvent \u00eatre \u00e9vit\u00e9es si les consignes d&#039;installation, de manipulation et d&#039;utilisation appropri\u00e9es sont respect\u00e9es.<\/p><p class=\"p2\">En comprenant comment les contraintes, la temp\u00e9rature, l&#039;alignement et la corrosion affectent les bagues en carbure de tungst\u00e8ne, les entreprises peuvent prolonger leur dur\u00e9e de vie et \u00e9viter des pannes co\u00fbteuses.<\/p><p class=\"p3\">Si vous souhaitez en savoir plus sur une entreprise, n&#039;h\u00e9sitez pas \u00e0<a href=\"https:\/\/www.retopz.com\/fr\/contact\/\" target=\"_blank\" rel=\"noopener\"> Contactez-nous.\u00a0<\/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 known for their high hardness and long life. But they can still crack when the working conditions or installation steps are not correct. Cracks reduce performance and may cause pump or machine failure. This guide explains the main reasons why these bushings crack and what you can do to avoid these [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":14564,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14571","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 v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Carbide Bushings Crack: Causes &amp; Fixes<\/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\/fr\/why-tungsten-carbide-bushings-crack-root-causes-and-fixes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Tungsten Carbide Bushings Crack: Root Causes and Fixes\" \/>\n<meta property=\"og:description\" content=\"Tungsten carbide bushings are known for their high hardness and long life. But they can still crack when the working conditions or installation steps are not correct. Cracks reduce performance and may cause pump or machine failure. This guide explains the main reasons why these bushings crack and what you can do to avoid these [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.retopz.com\/fr\/why-tungsten-carbide-bushings-crack-root-causes-and-fixes\/\" \/>\n<meta property=\"og:site_name\" content=\"Retop Carbide\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-11T03:25:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-11T03:59:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.retopz.com\/wp-content\/uploads\/2025\/12\/Why-Tungsten-Carbide-Bushings-Crack-Root-Causes-and-Fixes-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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