{"id":5862,"date":"2020-04-30T07:33:24","date_gmt":"2020-04-30T07:33:24","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5862"},"modified":"2025-07-01T06:34:20","modified_gmt":"2025-07-01T06:34:20","slug":"performances-de-lacier-inoxydable-duplex-2507-et-procede-de-soudage","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/performances-de-lacier-inoxydable-duplex-2507-et-procede-de-soudage\/","title":{"rendered":"2507 Performances et processus de soudage en acier inoxydable duplex"},"content":{"rendered":"

L'acier inoxydable duplex est devenu un mat\u00e9riau d'ing\u00e9nierie important, largement utilis\u00e9 dans l'industrie p\u00e9trochimique, offshore, \u00e9quipement de gisement de p\u00e9trole, fabrication de papier, protection de l'environnement de construction navale, etc.<\/em><\/h2>\n\n\n\n

L'acier inoxydable duplex 2507 est d\u00e9velopp\u00e9 sur la base de l'acier inoxydable duplex 2205 de deuxi\u00e8me g\u00e9n\u00e9ration, a actuellement SAF2507, UR52N +, Zeron100, S32750, 00Cr25Ni7Mo4N et d'autres nuances.<\/em><\/p>\n\n\n\n

Le 2507 est compos\u00e9 d'aust\u00e9nite et de ferrite, et poss\u00e8de les deux caract\u00e9ristiques de l'acier inoxydable aust\u00e9nitique et de l'acier inoxydable ferritique, de sorte qu'il a un coefficient de dilatation thermique plus faible et une conductivit\u00e9 thermique plus \u00e9lev\u00e9e que l'acier inoxydable aust\u00e9nitique. Le facteur de corrosion par piq\u00fbre (PREN) est sup\u00e9rieur \u00e0 40. Il est r\u00e9sistant \u00e0 la corrosion par piq\u00fbres, \u00e0 la corrosion caverneuse et \u00e0 la corrosion par le chlorure. fissuration par corrosion sous contrainte<\/a>Il poss\u00e8de une grande r\u00e9sistance, une grande r\u00e9sistance \u00e0 la fatigue, une faible temp\u00e9rature et une grande t\u00e9nacit\u00e9. Il s'agit d'un mat\u00e9riau largement utilis\u00e9.<\/p>\n\n\n\n

Ces derni\u00e8res ann\u00e9es, avec l'expansion continue du domaine d'application de tuyau duplex<\/a>, la demande de technologie de soudage a augment\u00e9, acc\u00e9l\u00e9rant le d\u00e9veloppement de la technologie de soudage.<\/p>\n\n\n\n

\n
\"Tuyau
Duplex 2507 tuyaux<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

Divers \u00e9l\u00e9ments en acier inoxydable duplex 2507<\/h3>\n\n\n\n

La tr\u00e8s faible teneur en carbone de la composition chimique de l'acier inoxydable duplex 2507 peut am\u00e9liorer la soudabilit\u00e9 de l'acier et r\u00e9duire la tendance \u00e0 la pr\u00e9cipitation de carbure \u00e0 la limite du grain pendant le traitement thermique, augmenter la r\u00e9sistance \u00e0 la corrosion et la r\u00e9sistance \u00e0 l'usure de l'acier. corrosion intergranulaire<\/a> r\u00e9sistance, haute teneur en chrome, haute molybd\u00e8ne<\/a> et une teneur en azote plus \u00e9lev\u00e9e peuvent am\u00e9liorer la r\u00e9sistance \u00e0 la corrosion, de sorte qu'il pr\u00e9sente une bonne r\u00e9sistance \u00e0 l'acide formique, \u00e0 l'acide ac\u00e9tique, au nitrure et \u00e0 d'autres formes de corrosion uniforme, une r\u00e9sistance \u00e0 la corrosion par piq\u00fbre et une r\u00e9sistance \u00e0 la corrosion sous contrainte.<\/p>\n\n\n\n

L'azote est ajout\u00e9 en tant qu'\u00e9l\u00e9ment d'alliage \u00e0 l'acier inoxydable, ce qui peut am\u00e9liorer la stabilit\u00e9 de l'aust\u00e9nite et \u00e9quilibrer le rapport de phase de l'acier duplex. Il peut augmenter la r\u00e9sistance de l'acier sans affecter la plasticit\u00e9 et la t\u00e9nacit\u00e9 de l'acier inoxydable, et peut remplacer partiellement le nickel dans l'acier inoxydable pour r\u00e9duire les co\u00fbts. L'azote a pour effet de retarder la dispersion et la pr\u00e9cipitation des compos\u00e9s interm\u00e9talliques et de stabiliser l'aust\u00e9nite dans les aciers inoxydables duplex.<\/p>\n\n\n\n

Soudage<\/h3>\n\n\n
\n
\"Soudure
Soudure d'\u00e9cailles de poisson<\/figcaption><\/figure>\n<\/div>\n\n\n

La m\u00e9thode de soudage de l'acier inoxydable 2507 duplex est largement applicable et peut \u00eatre soud\u00e9e de diverses mani\u00e8res. L'apport de chaleur de soudage et la vitesse de refroidissement affectent l'\u00e9quilibre des phases de la ferrite et de l'aust\u00e9nite et les performances du joint soud\u00e9.<\/p>\n\n\n\n

Afin de garantir que le cordon de soudure a des proportions appropri\u00e9es et de bonnes propri\u00e9t\u00e9s m\u00e9caniques et performances de corrosion, un apport de chaleur excessivement faible ou excessif doit \u00eatre \u00e9vit\u00e9 pendant le soudage, contr\u00f4l\u00e9 \u00e0 5-20kJ \/ cm, et la limite inf\u00e9rieure doit \u00eatre prise lors du soudage mince- parties mur\u00e9es. Augmentez l'apport de chaleur lors du soudage de pi\u00e8ces \u00e0 parois \u00e9paisses et la temp\u00e9rature entre les canaux ne doit pas d\u00e9passer 100 \u2103.<\/p>","protected":false},"featured_media":5864,"template":"","categories":[186],"tags":[],"class_list":["post-5862","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\n2507 Duplex Stainless Steel Performance And Welding Process - Stainless Steel Pipe and Fittings | KAYSUNS<\/title>\n<meta name=\"description\" content=\"2507 duplex stainless steel has grades with: SAF2507, UR52N +, Zeron100, S32750, 00Cr25Ni7Mo4N and other grades and performance new welding methods...\" \/>\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\/performances-de-lacier-inoxydable-duplex-2507-et-procede-de-soudage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2507 Duplex Stainless Steel Performance And Welding Process - 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