{"id":5694,"date":"2020-03-10T08:32:23","date_gmt":"2020-03-10T08:32:23","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5694"},"modified":"2025-12-15T07:08:06","modified_gmt":"2025-12-15T07:08:06","slug":"pourquoi-la-resistance-a-la-corrosion-des-pieces-soudees-dun-tube-soude-en-acier-inoxydable-a-diminue","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/pourquoi-la-resistance-a-la-corrosion-des-pieces-soudees-dun-tube-soude-en-acier-inoxydable-a-diminue\/","title":{"rendered":"Pourquoi la r\u00e9sistance \u00e0 la corrosion des pi\u00e8ces soud\u00e9es des tuyaux soud\u00e9s en acier inoxydable a diminu\u00e9"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Toutes les propri\u00e9t\u00e9s b\u00e9n\u00e9fiques des tubes soud\u00e9s en acier inoxydable peuvent \u00eatre endommag\u00e9es pendant le traitement<\/h2>\n\n\n\n<p>Les <a href=\"https:\/\/www.kaysuns.com\/fr\/la-resistance-a-la-corrosion-de-lacier-inoxydable\/\" target=\"_blank\">r\u00e9sistance \u00e0 la corrosion<\/a> de <a href=\"https:\/\/www.kaysuns.com\/fr\/tuyaux-en-acier-inoxydable\/\" target=\"_blank\">tuyaux en acier inoxydable<\/a> peut diminuer au cours de la <a href=\"https:\/\/www.kaysuns.com\/fr\/blog\/les-types-de-traitement-thermique\/\" target=\"_blank\">traitement thermique<\/a> ou un traitement m\u00e9canique tel que le soudage, le d\u00e9coupage, le sciage, le per\u00e7age et le pliage. En raison de ces traitements, le film de protection contre l'oxydation \u00e0 la surface de la <a href=\"https:\/\/www.kaysuns.com\/fr\/tube-soude-en-acier-inoxydable\/\" target=\"_blank\">tubes soud\u00e9s en acier inoxydable<\/a> est g\u00e9n\u00e9ralement endommag\u00e9 ou tach\u00e9.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"774\" height=\"511\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/09\/stainless-steel-pipe-welding-process.jpg\" alt=\"processus de soudage des tuyaux en acier inoxydable\" class=\"wp-image-5250\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/09\/stainless-steel-pipe-welding-process.jpg 774w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/09\/stainless-steel-pipe-welding-process-300x198.jpg 300w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/09\/stainless-steel-pipe-welding-process-768x507.jpg 768w\" sizes=\"(max-width: 774px) 100vw, 774px\" \/><\/figure>\n<\/div>\n\n\n<p>Par cons\u00e9quent, les tuyaux soud\u00e9s en acier inoxydable peuvent subir une corrosion et une rouille localis\u00e9es, m\u00eame dans des conditions de corrosion relativement faibles.<\/p>\n\n\n\n<p>Le soudage de l&#039;acier inoxydable provoque une oxydation acc\u00e9l\u00e9r\u00e9e \u00e0 l&#039;int\u00e9rieur et \u00e0 l&#039;ext\u00e9rieur de la soudure et \u00e0 proximit\u00e9 de la soudure.<\/p>\n\n\n\n<p>Par rapport \u00e0 la couche d&#039;oxyde sur l&#039;acier inoxydable avant le soudage, la couche d&#039;oxyde dans la zone d\u00e9color\u00e9e apr\u00e8s le soudage est relativement \u00e9paisse et la composition est modifi\u00e9e (le chrome est r\u00e9duit), de sorte que la r\u00e9sistance \u00e0 la corrosion locale est r\u00e9duite. Pour l&#039;int\u00e9rieur des tuyaux en acier soud\u00e9s en acier inoxydable, l&#039;oxydation et la d\u00e9coloration peuvent \u00eatre minimis\u00e9es en utilisant une m\u00e9thode de rin\u00e7age \u00e0 contre-courant appropri\u00e9e.<\/p>\n\n\n\n<p>Apr\u00e8s le soudage des tubes soud\u00e9s en acier inoxydable, il est souvent n\u00e9cessaire d'effectuer <a href=\"https:\/\/www.kaysuns.com\/fr\/traitement-post-soudure\/\" target=\"_blank\">traitements post-soudure<\/a> Le d\u00e9capage et le meulage permettent d'\u00e9liminer la couche d'oxyde (color\u00e9e) et de restaurer la r\u00e9sistance \u00e0 la corrosion. Voici un nuancier qui permet de d\u00e9terminer si la soudure n\u00e9cessite un d\u00e9capage en fonction du niveau de couleur.<\/p>\n\n\n\n<p>En principe, chaque couleur indique la pr\u00e9sence de couches d&#039;oxyde oxyd\u00e9es et affect\u00e9es, de sorte que la r\u00e9sistance \u00e0 la corrosion des tubes soud\u00e9s en acier inoxydable est r\u00e9duite. Afin d&#039;\u00e9liminer la d\u00e9coloration de la surface du tube soud\u00e9 et de restaurer la r\u00e9sistance \u00e0 la corrosion, il existe de nombreuses fa\u00e7ons\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les m\u00e9thodes chimiques comprennent : le d\u00e9capage (par immersion, p\u00e2te de d\u00e9capage ou pulv\u00e9risation), la passivation auxiliaire (apr\u00e8s d\u00e9capage) et le polissage \u00e9lectrolytique.<\/li>\n\n\n\n<li>Les m\u00e9thodes m\u00e9caniques comprennent : le sablage, le sablage avec des particules de verre ou de c\u00e9ramique, l&#039;annihilation, le brossage et le polissage.<\/li>\n<\/ul>","protected":false},"featured_media":3412,"template":"","categories":[186],"tags":[],"class_list":["post-5694","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why Corrosion Resistance Of Welded Parts Of Stainless Steel Welded Pipe Decreased - 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