{"id":5609,"date":"2020-02-13T07:21:43","date_gmt":"2020-02-13T07:21:43","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5609"},"modified":"2025-09-19T05:34:23","modified_gmt":"2025-09-19T05:34:23","slug":"pourquoi-les-tuyaux-soudes-en-acier-inoxydable-rouillent-ils-apres-le-soudage","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/pourquoi-les-tuyaux-soudes-en-acier-inoxydable-rouillent-ils-apres-le-soudage\/","title":{"rendered":"Pourquoi les tuyaux soud\u00e9s en acier inoxydable rouillent-ils apr\u00e8s le soudage ?"},"content":{"rendered":"

Pourquoi les tuyaux soud\u00e9s en acier inoxydable rouillent-ils apr\u00e8s la soudure ?<\/h2>\n

Toutes les caract\u00e9ristiques b\u00e9n\u00e9fiques de Tubes soud\u00e9s en acier inoxydable 304<\/a> sera endommag\u00e9 dans les m\u00e9thodes de production et de traitement, telles que les proc\u00e9d\u00e9s de soudage m\u00e9canique comme le soudage \u00e9lectrique, la d\u00e9coupe au laser, le sciage, le poin\u00e7onnage et le pliage.<\/p>\n

\"soudage<\/a>
tuyau et bride en acier inoxydable soud\u00e9s<\/figcaption><\/figure>\n

Sous un tel traitement, le film anti-oxydation sur la couche superficielle du tuyau en acier inoxydable<\/a> sera endommag\u00e9 dans une certaine mesure, et il est peu probable de maintenir un traitement de passivation spontan\u00e9 et complet. Par cons\u00e9quent, \u00e0 l'heure actuelle, le tuyau soud\u00e9 en acier inoxydable provoquera une corrosion partielle, m\u00eame sous des normes de corrosion relativement faibles.<\/p>\n

Les tuyaux en acier inoxydable soud\u00e9s seront oxyd\u00e9s \u00e0 l'air plus rapidement sur les c\u00f4t\u00e9s int\u00e9rieurs et ext\u00e9rieurs de la soudure et pr\u00e8s de la soudure. Compar\u00e9e \u00e0 celle d'avant le soudage \u00e9lectrique, la couche d'oxyde d'air dans la zone d\u00e9color\u00e9e est relativement \u00e9paisse, et la composition est modifi\u00e9e (la teneur en chrome est r\u00e9duite), ce qui favorise l'affaiblissement de la capacit\u00e9 \u00e0 r\u00e9sister \u00e0 l'attaque partielle.<\/p>\n

Pour l'int\u00e9rieur des tuyaux en acier inoxydable soud\u00e9s sans soudure, une m\u00e9thode de contre-soufflage mod\u00e9r\u00e9e peut \u00eatre utilis\u00e9e pour rendre la zone d'oxydation et de d\u00e9coloration de l'air plus petite selon l'application.<\/p>\n

Apr\u00e8s le soudage \u00e9lectrique des tuyaux soud\u00e9s en acier inoxydable, traitement post-soudure<\/a> Des processus tels que le d\u00e9capage, la passivation et le meulage doivent \u00eatre effectu\u00e9s pour \u00e9liminer les couches d'oxyde d'air (plaques color\u00e9es) et r\u00e9tablir la r\u00e9sistance \u00e0 la corrosion.<\/p>\n

D'autres solutions existent : m\u00e9thode chimique : passivation par d\u00e9capage (\u00e0 l'aide d'une p\u00e2te d\u00e9capante ou d'un pulv\u00e9risateur selon l'immersion), traitement auxiliaire de passivation (apr\u00e8s la passivation par d\u00e9capage) et polissage chimique ; m\u00e9thode m\u00e9canique : \u00e9limination par sablage, les particules de verre ou de porcelaine intercalaires sont grenaill\u00e9es, annihil\u00e9es, lav\u00e9es et polies.<\/p>\n

Vous voudrez peut-\u00eatre aussi lire :
\nL'art et la science du soudage de tuyaux<\/a>
\nComment distinguer les tubes soud\u00e9s en acier inoxydable recuits et non recuits ?<\/a><\/p>","protected":false},"featured_media":5610,"template":"","categories":[186],"tags":[],"class_list":["post-5609","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nWhy Stainless Steel Welded Pipe Will Rust After Welding - Stainless Steel Pipe and Fittings | KAYSUNS<\/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.kaysuns.com\/fr\/blog\/pourquoi-les-tuyaux-soudes-en-acier-inoxydable-rouillent-ils-apres-le-soudage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Stainless Steel Welded Pipe Will Rust After Welding - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Why stainless steel welded pipe will rust after welding All the beneficial characteristics of 304 stainless steel welded pipes will be damaged in the production and processing methods, such as mechanical welding processes like electric welding, laser cutting, sawing, punching and bending. 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