{"id":11028,"date":"2021-11-03T01:55:31","date_gmt":"2021-11-03T01:55:31","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11028"},"modified":"2021-11-03T01:55:31","modified_gmt":"2021-11-03T01:55:31","slug":"aluminum-coil-rolling","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-coil-rolling\/","title":{"rendered":"Laminage de bobines d'aluminium"},"content":{"rendered":"

Dans le secteur des produits lamin\u00e9s en bobines d'aluminium, le proc\u00e9d\u00e9 de coul\u00e9e et de laminage en continu est largement utilis\u00e9 pour la fabrication de bobines.<\/p>\n

Dans la production mondiale totale de t\u00f4les, bandes et feuilles d'aluminium, les billettes lamin\u00e9es \u00e0 chaud repr\u00e9sentent moins de 20%, tandis que les billettes issues de la coul\u00e9e continue \u00e0 double cylindre, moins co\u00fbteuses, repr\u00e9sentent plus de 80%.<\/p>\n

L'am\u00e9lioration de la qualit\u00e9 des bobines d'aluminium coul\u00e9es-lamin\u00e9es en continu \u00e0 double cylindre permet d'\u00e9liminer les d\u00e9fauts tels que les bandes blanches, les taches noires, les gros grains, les cylindres collants et les bords fissur\u00e9s de la t\u00f4le coul\u00e9e-lamin\u00e9e.<\/p>\n

La technologie de coul\u00e9e et de laminage en continu de bobines d\u2019aluminium \u00e0 double cylindre se caract\u00e9rise par une production continue et ininterrompue. Tout accident ou tout d\u00e9marrage et arr\u00eat fr\u00e9quents dus \u00e0 des coupures de courant entra\u00eeneront des variations de la qualit\u00e9 des t\u00f4les coul\u00e9es-lamin\u00e9es. Il est donc essentiel d\u2019assurer un fonctionnement stable \u00e0 long terme de la machine de coul\u00e9e et de laminage en continu \u00e0 double cylindre.<\/p>\n

Il est n\u00e9cessaire d'am\u00e9liorer le d\u00e9gazage et la filtration de l'aluminium fondu, d'ajouter des agents d'affinage du grain et, parall\u00e8lement, de renforcer le sens des responsabilit\u00e9s des op\u00e9rateurs.<\/p>\n

\"\"<\/p>\n

La m\u00e9thode de purification de l'aluminium fondu dans le four ne permet d'\u00e9liminer que les impuret\u00e9s nouvellement introduites pendant le processus de fusion, mais ne permet pas d'\u00e9liminer la pollution secondaire de l'aluminium fondu lors de la coul\u00e9e. Par ailleurs, en raison de la grande superficie du four et de la faible profondeur du bain de fusion, l'affinage par fondant ne permet pas de purifier efficacement l'aluminium fondu dans tous les recoins.<\/p>\n

Par cons\u00e9quent, dans les proc\u00e9d\u00e9s modernes de fusion et de coul\u00e9e, le d\u00e9gazage et filtration en ligne<\/a> On utilise une m\u00e9thode de purification en dehors du four : l'aluminium en fusion entre en contact avec le flux gazeux dans la chambre de d\u00e9gazage, puis s'\u00e9coule vers le moule de coul\u00e9e semi-continue ou vers la buse et l'embout de coul\u00e9e continue. Cela garantit une purification efficace de toute la masse d'aluminium en fusion et permet d'\u00e9viter toute pollution secondaire.<\/p>\n

Apr\u00e8s un traitement de d\u00e9gazage et de filtration en ligne, la teneur en hydrog\u00e8ne de l'aluminium fondu peut \u00eatre r\u00e9duite gr\u00e2ce au proc\u00e9d\u00e9 60%. Les inclusions non m\u00e9talliques dont le diam\u00e8tre des particules est inf\u00e9rieur \u00e0 50 \u00b5m peuvent \u00eatre \u00e9limin\u00e9es par le proc\u00e9d\u00e9 50%, tandis que celles dont le diam\u00e8tre est sup\u00e9rieur \u00e0 100 \u00b5m peuvent \u00eatre \u00e9limin\u00e9es par le proc\u00e9d\u00e9 90%.<\/p>","protected":false},"excerpt":{"rendered":"

In the aluminum coil rolled products industry, the continuous casting and rolling process have been widely used in the production of coils. In the world’s…<\/p>","protected":false},"author":1,"featured_media":11038,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12775,12776],"class_list":["post-11028","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-coil-rolling-process","tag-online-degassing-filtering"],"yoast_head":"\nAluminum Coil Rolling Process, Online Degassing Filtering<\/title>\n<meta name=\"description\" content=\"In the aluminum coil rolled products industry, the continuous casting and rolling process have been widely used in the production of coils.\" \/>\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.alalloycasting.com\/fr\/aluminum-coil-rolling\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" 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