{"id":56548,"date":"2026-01-14T02:24:25","date_gmt":"2026-01-14T02:24:25","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=56548"},"modified":"2026-01-14T02:27:55","modified_gmt":"2026-01-14T02:27:55","slug":"quest-ce-que-la-fissuration-a-chaud","status":"publish","type":"post","link":"https:\/\/www.kaysuns.com\/fr\/quest-ce-que-la-fissuration-a-chaud\/","title":{"rendered":"Qu'est-ce que la fissuration \u00e0 chaud ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"56548\" class=\"elementor elementor-56548\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b11a9f e-flex e-con-boxed e-con e-parent\" data-id=\"1b11a9f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e5f7426 elementor-widget elementor-widget-text-editor\" data-id=\"e5f7426\" data-element_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<strong>Fissuration \u00e0 chaud<\/strong>,Ce ph\u00e9nom\u00e8ne cr\u00e9e des fractures dans le m\u00e9tal soud\u00e9 ou dans la zone affect\u00e9e thermiquement (ZAT) avant que le joint n'atteigne la temp\u00e9rature ambiante. Si vous ignorez les risques de fissuration \u00e0 chaud, vous vous exposez au danger de fuites soudaines dans les conduites \u00e0 haute pression.\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b2f158a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b2f158a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8af0479\" data-id=\"8af0479\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-77050a9 elementor-widget elementor-widget-heading\" data-id=\"77050a9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le m\u00e9canisme de la fissuration \u00e0 chaud<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f43c5e1 elementor-widget elementor-widget-text-editor\" data-id=\"f43c5e1\" data-element_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\tLa fissuration \u00e0 chaud se produit lorsque des impuret\u00e9s \u00e0 bas point de fusion se concentrent aux limites des grains de la soudure en cours de refroidissement.Lorsque le m\u00e9tal soud\u00e9 se r\u00e9tracte pendant le refroidissement, il cr\u00e9e une contrainte de traction sur ces limites de grains.S'il existe encore un film liquide d'impuret\u00e9s, le m\u00e9tal ne peut pas r\u00e9sister \u00e0 la contrainte.Par cons\u00e9quent, les grains se s\u00e9parent, laissant une fissure microscopique ou visible.Cela se produit souvent au centre du cordon de soudure, l\u00e0 o\u00f9 la solidification finale a lieu.\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6327f96 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6327f96\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-bbf20cb\" data-id=\"bbf20cb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-375c75d elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"375c75d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ce que nous faisons<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26ccf95 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"26ccf95\" data-element_type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" 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<ul><li>Plaque<\/li><li>Feuille<\/li><li>Forgeage<\/li><li>Barre ronde<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0dd63c elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"f0dd63c\" data-element_type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" 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<ul><li>Bride<\/li><li>Tuyaux<\/li><li>Raccords<\/li><li>Sur mesure<\/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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9ad7149\" data-id=\"9ad7149\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-565c3c7 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"565c3c7\" data-element_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>Contactez-nous pour plus d'informations\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec3c3e4 elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"ec3c3e4\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\" id=\"#241018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Nous contacter<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fef647e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fef647e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6e4b50e\" data-id=\"6e4b50e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e60282e elementor-widget elementor-widget-heading\" data-id=\"e60282e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Fissuration \u00e0 chaud des aciers inoxydables aust\u00e9nitiques<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2bf09d4 elementor-widget elementor-widget-text-editor\" data-id=\"2bf09d4\" data-element_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\tLes aciers inoxydables aust\u00e9nitiques standard, tels que 304L et 316L, sont largement utilis\u00e9s dans les domaines suivants <a href=\"https:\/\/www.kaysuns.com\/fr\/raccords-de-tuyauterie-en-acier-inoxydable\/\" target=\"_blank\" rel=\"noopener\">raccords de tuyauterie<\/a>.Toutefois, ces alliages sont susceptibles de pr\u00e9senter des probl\u00e8mes de solidification en raison de leur forte dilatation thermique.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a6f677 elementor-widget elementor-widget-text-editor\" data-id=\"6a6f677\" data-element_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\tPour \u00e9viter cela, les professionnels <a href=\"\/fr\/\" target=\"_blank\" rel=\"noopener\">Fournisseurs de tubes en acier inoxydable<\/a> contr\u00f4ler strictement la teneur en ferrite des soudures.Une petite quantit\u00e9 de ferrite primaire (typiquement 3% \u00e0 8%) agit comme un solvant pour les impuret\u00e9s telles que le soufre et le phosphore.Cela emp\u00eache la formation des films liquides dangereux mentionn\u00e9s plus haut.Si la teneur en ferrite est trop faible,le risque de fissuration \u00e0 chaud dans le joint de la conduite augmente consid\u00e9rablement.\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-455042a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"455042a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ee35372\" data-id=\"ee35372\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1c1bdf6 elementor-widget elementor-widget-heading\" data-id=\"1c1bdf6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vuln\u00e9rabilit\u00e9 des alliages \u00e0 base de nickel<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9577e8c elementor-widget elementor-widget-text-editor\" data-id=\"9577e8c\" data-element_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\tLes alliages \u00e0 base de nickel offrent une r\u00e9sistance extr\u00eame \u00e0 la corrosion, mais ils sont notoirement difficiles \u00e0 souder. Contrairement \u00e0 l'acier inoxydable, ces alliages se solidifient enti\u00e8rement sous forme d'aust\u00e9nite (enti\u00e8rement aust\u00e9nitique). Ils ne b\u00e9n\u00e9ficient pas d'une phase de ferrite secondaire pour \u201cnettoyer\u201d les joints de grains.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86ddc41 elementor-widget elementor-widget-text-editor\" data-id=\"86ddc41\" data-element_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<ul><li data-path-to-node=\"12,0,0\"><b data-path-to-node=\"12,0,0\" data-index-in-node=\"0\">Inconel (par exemple, 625, 718) :<br \/><\/b>Ces alliages contiennent du niobium et du silicium, qui peuvent former des phases eutectiques \u00e0 bas point de fusion.<\/li><li data-path-to-node=\"12,1,0\"><b data-path-to-node=\"12,1,0\" data-index-in-node=\"0\">Incoloy (par exemple, 825) :<br \/><\/b>La teneur \u00e9lev\u00e9e en nickel et en fer n\u00e9cessite un contr\u00f4le pr\u00e9cis de la chaleur afin d'\u00e9viter les tensions thermiques.<\/li><li data-path-to-node=\"12,2,0\"><b data-path-to-node=\"12,2,0\" data-index-in-node=\"0\">Hastelloy (par exemple, C276) :<br \/><\/b>Con\u00e7u pour les environnements acides, cet alliage n\u00e9cessite un faible apport de chaleur pour \u00e9viter les micro-fissures dans le joint de la bride.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b3b6439 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b3b6439\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-02c535f\" data-id=\"02c535f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3bc0d11 elementor-widget elementor-widget-heading\" data-id=\"3bc0d11\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Comparaison de la sensibilit\u00e9 \u00e0 la fissuration \u00e0 chaud par groupe de m\u00e9taux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b9f4070 elementor-widget elementor-widget-text-editor\" data-id=\"b9f4070\" data-element_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>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Groupe des m\u00e9taux<\/th>\n<th>Niveau de sensibilit\u00e9<\/th>\n<th>Cause premi\u00e8re<\/th>\n<th>Strat\u00e9gie d'att\u00e9nuation<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Inox aust\u00e9nitique<\/td>\n<td>Mod\u00e9r\u00e9<\/td>\n<td>Haute dilatation thermique<\/td>\n<td>Maintenir 3-8% Delta Ferrite<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Alliages de nickel<\/td>\n<td>Haut<\/td>\n<td>Solidification enti\u00e8rement aust\u00e9nitique<\/td>\n<td>Utiliser un faible apport de chaleur et des produits de remplissage sp\u00e9cifiques<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Inox duplex<\/td>\n<td>Faible<\/td>\n<td>Structure de phase \u00e9quilibr\u00e9e<\/td>\n<td>Contr\u00f4ler les taux de refroidissement<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Acier Carbone<\/td>\n<td>Tr\u00e8s faible<\/td>\n<td>Faibles niveaux d'impuret\u00e9<\/td>\n<td>Pr\u00e9chauffage standard<\/td>\n<\/tr>\n<\/tbody>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0a8b53e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0a8b53e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4def242\" data-id=\"4def242\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4326820 elementor-widget elementor-widget-heading\" data-id=\"4326820\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Facteurs qui augmentent le risque de fissuration des composants de tuyauterie<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7794b4a elementor-widget elementor-widget-text-editor\" data-id=\"7794b4a\" data-element_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<ul><li><strong>Stress li\u00e9 \u00e0 la contention :<\/strong><br \/>Les brides \u00e0 parois \u00e9paisses offrent une contrainte m\u00e9canique \u00e9lev\u00e9e, emp\u00eachant le r\u00e9tr\u00e9cissement naturel des soudures et augmentant ainsi la contrainte de traction.<\/li><li><strong>Niveaux d'impuret\u00e9 :<\/strong><br \/>Des traces de soufre, de phosphore, de plomb ou de zinc augmentent consid\u00e9rablement le risque de fissuration \u00e0 chaud.<\/li><li><strong>Forme du cordon de soudure :<\/strong><br \/>Les soudures profondes et \u00e9troites (rapport d'aspect \u00e9lev\u00e9) sont susceptibles d'induire des fissures dans la ligne m\u00e9diane.<\/li><li><strong>Puissance calorifique :<\/strong><br \/>Une chaleur excessive provoque une dilatation excessive du m\u00e9tal, ce qui g\u00e9n\u00e8re des contraintes plus importantes lors du refroidissement ult\u00e9rieur.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d82f8f7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d82f8f7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4b89047\" data-id=\"4b89047\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-665959e elementor-widget elementor-widget-heading\" data-id=\"665959e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Meilleures pratiques pour \u00e9viter la fissuration \u00e0 chaud<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36370a4 elementor-widget elementor-widget-heading\" data-id=\"36370a4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">S\u00e9lection correcte du m\u00e9tal d'apport<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfad53c elementor-widget elementor-widget-text-editor\" data-id=\"cfad53c\" data-element_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\tPour les alliages de nickel, choisissez des m\u00e9taux d'apport contenant des \u00e9l\u00e9ments tels que le mangan\u00e8se. Le mangan\u00e8se r\u00e9agit avec le soufre pour former des compos\u00e9s stables, r\u00e9duisant ainsi le film liquide aux limites du grain.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14bb119 elementor-widget elementor-widget-heading\" data-id=\"14bb119\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Contr\u00f4ler l'apport de chaleur<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-24ffdd2 elementor-widget elementor-widget-text-editor\" data-id=\"24ffdd2\" data-element_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\tUn apport de chaleur plus faible r\u00e9duit la taille de la \u201czone molle\u201d pendant la solidification.Pour les raccords de tuyauterie en acier inoxydable, utilisez une technique de \u201ccordon de soudure\u201d plut\u00f4t qu'un tissage large, ce qui permet de conserver un bain de soudure petit et g\u00e9rable.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-511a235 elementor-widget elementor-widget-heading\" data-id=\"511a235\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Propret\u00e9 de la surface<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85b8700 elementor-widget elementor-widget-text-editor\" data-id=\"85b8700\" data-element_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\tAvant de souder un tuyau en acier inoxydable, il convient de nettoyer soigneusement la surface et d'\u00e9liminer toute trace d'huile, de graisse et de peinture. Ces substances contiennent souvent du soufre ou du plomb, qui agissent comme des catalyseurs pour la fissuration \u00e0 chaud.\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-c19a447 e-flex e-con-boxed e-con e-parent\" data-id=\"c19a447\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b06fc38 elementor-cta--layout-image-right elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"b06fc38\" data-element_type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<a class=\"elementor-cta\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\">\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tN'h\u00e9sitez pas \u00e0 nous contacter\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tKAYSUNS propose des solutions globales pour les mat\u00e9riaux de tuyauterie tels que les tuyaux, les raccords, les brides, les vannes, les plaques, les pi\u00e8ces forg\u00e9es, les lingots d'acier inoxydable, d'acier duplex et d'acier alli\u00e9, toutes sortes d'\u00e9l\u00e9ments de fixation (boulons, \u00e9crous, rondelles plates, rondelles bomb\u00e9es) et d'autres produits. Nous acceptons un service personnalis\u00e9 pour nos produits et certains d'entre eux peuvent \u00eatre fournis en petites quantit\u00e9s. Si vous avez des questions sur notre soci\u00e9t\u00e9 et nos produits, n'h\u00e9sitez pas \u00e0 nous contacter.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t<span class=\"elementor-cta__button elementor-button elementor-size-\">\n\t\t\t\t\t\tObtenir un devis\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cc2fdf2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cc2fdf2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c246dff\" data-id=\"c246dff\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6276d2d elementor-widget elementor-widget-heading\" data-id=\"6276d2d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Identification des fissures de crat\u00e8re aux extr\u00e9mit\u00e9s des soudures<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cfacead elementor-widget elementor-widget-text-editor\" data-id=\"cfacead\" data-element_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\tUne forme sp\u00e9cifique et dangereuse de fissuration \u00e0 chaud est la \u201cfissure en forme de crat\u00e8re\u201d. Elle se produit \u00e0 l'extr\u00e9mit\u00e9 d'un cordon de soudure lorsque le soudeur interrompt soudainement l'arc \u00e9lectrique.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6e23fd elementor-widget elementor-widget-text-editor\" data-id=\"e6e23fd\" data-element_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>Dans un joint de bride \u00e0 haute pression, une fissure en forme de crat\u00e8re peut agir comme un concentrateur de contraintes. Avec le temps, ce petit d\u00e9faut peut se propager \u00e0 travers toute la paroi du tuyau en acier inoxydable.<br \/>Pour \u00e9viter cela, les professionnels de Kaysuns utilisent la fonction \u2019crater fill\u201c sur les machines \u00e0 souder modernes. Cette fonction r\u00e9duit progressivement le courant, ce qui permet au bain de soudure de se solidifier lentement et compl\u00e8tement.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a3846e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a3846e2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e693b1\" data-id=\"7e693b1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a754ccf elementor-widget elementor-widget-heading\" data-id=\"a754ccf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">La chimie de la fissuration par liquidation dans les alliages de nickel<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5a6f47 elementor-widget elementor-widget-text-editor\" data-id=\"e5a6f47\" data-element_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\tAu-del\u00e0 des probl\u00e8mes de solidification classiques, les alliages \u00e0 base de nickel comme l'Inconel 718 sont confront\u00e9s \u00e0 une menace appel\u00e9e \u201cliquation cracking\u201d, qui se produit dans la zone affect\u00e9e thermiquement (HAZ) plut\u00f4t que dans le m\u00e9tal soud\u00e9 lui-m\u00eame.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6288ac4 elementor-widget elementor-widget-text-editor\" data-id=\"6288ac4\" data-element_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>Certains \u00e9l\u00e9ments, comme le niobium ou le bore, peuvent fondre \u00e0 des temp\u00e9ratures inf\u00e9rieures \u00e0 celles du m\u00e9tal environnant.Pendant le soudage,ces joints de grains se \u201cliqu\u00e9fient\u201d alors que le reste du tuyau reste solide.Les fissures microscopiques qui en r\u00e9sultent sont souvent invisibles \u00e0 l'\u0153il nu.<br \/>Par cons\u00e9quent, les ing\u00e9nieurs de Kaysuns doivent effectuer un ressuage sur tous les raccords de tuyauterie fabriqu\u00e9s \u00e0 partir d'alliages \u00e0 haute teneur en nickel afin de s'assurer que l'HAZ est intacte.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9ca4890 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9ca4890\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3aa4aa6\" data-id=\"3aa4aa6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8a5fe65 elementor-widget elementor-widget-heading\" data-id=\"8a5fe65\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contr\u00f4le de la qualit\u00e9 : Test de fissuration \u00e0 chaud sur le terrain<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-981bd45 elementor-widget elementor-widget-text-editor\" data-id=\"981bd45\" data-element_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>Comment peut-on v\u00e9rifier si ces d\u00e9fauts existent dans un r\u00e9seau de canalisations ?<br \/>Un plan complet de contr\u00f4le de la qualit\u00e9 (CQ) est le seul moyen de garantir la s\u00e9curit\u00e9.<\/p><table><tbody><tr bgcolor=\"#00a0e9\"><th>M\u00e9thode d'essai<\/th><th>Efficacit\u00e9 de la fissuration \u00e0 chaud<\/th><th>Application<\/th><\/tr><tr><td bgcolor=\"#05B8E4\">Test visuel (VT)<\/td><td>Faible (uniquement pour les fissures superficielles)<\/td><td>Inspection g\u00e9n\u00e9rale des canalisations<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Ressuage (PT)<\/td><td>\u00c9lev\u00e9 (excellent pour les fissures superficielles)<\/td><td>Critique pour les joints en Incoloy \/ Hastelloy<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Radiographie (RT)<\/td><td>Mod\u00e9r\u00e9 (bon pour les vides internes)<\/td><td>Soudures bout \u00e0 bout \u00e0 p\u00e9n\u00e9tration totale<\/td><\/tr><tr><td bgcolor=\"#05B8E4\">Macro-gravure<\/td><td>\u00c9lev\u00e9 (montre la structure du grain)<\/td><td>Utilis\u00e9 dans la qualification des modes op\u00e9ratoires de soudage (PQR)<\/td><\/tr><\/tbody><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a115cca elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a115cca\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28b6009\" data-id=\"28b6009\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-23dfd55 elementor-widget elementor-widget-heading\" data-id=\"23dfd55\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">D\u00e9pannage<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65021cd elementor-widget elementor-widget-text-editor\" data-id=\"65021cd\" data-element_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>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Sympt\u00f4me observ\u00e9<\/th>\n<th>Cause premi\u00e8re probable<\/th>\n<th>Solution<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Fissures centrales<\/td>\n<td>Forme de perle inappropri\u00e9e<\/td>\n<td>Augmenter la largeur de la soudure ou r\u00e9duire la profondeur<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Fissures dans l'HAZ<\/td>\n<td>Apport de chaleur excessif<\/td>\n<td>Utiliser un amp\u00e9rage plus faible et un d\u00e9placement plus rapide<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Crat\u00e9risation \u00e0 la fin<\/td>\n<td>Terminaison rapide de l'arc<\/td>\n<td>Utiliser la fonction \u201cremplissage de crat\u00e8re\u201d sur la soudeuse<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">Micro-fissures<\/td>\n<td>Contamination de surface<\/td>\n<td>Nettoyage au solvant avec de l'ac\u00e9tone avant le soudage<\/td>\n<\/tr>\n<\/tbody>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-461c6ef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"461c6ef\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-fff914d\" data-id=\"fff914d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6b80e1a elementor-widget elementor-widget-heading\" data-id=\"6b80e1a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Nous contacter<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-618a3de elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"618a3de\" data-element_type=\"widget\" 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