{"id":4112,"date":"2020-08-25T06:51:15","date_gmt":"2020-08-25T06:51:15","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4112"},"modified":"2020-08-25T06:52:26","modified_gmt":"2020-08-25T06:52:26","slug":"casting-and-rolling-process","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/casting-and-rolling-process\/","title":{"rendered":"Proc\u00e9d\u00e9 de moulage et de laminage"},"content":{"rendered":"

Le proc\u00e9d\u00e9 de moulage et de laminage des bandes d'aluminium consiste \u00e0 utiliser l'aluminium comme mati\u00e8re premi\u00e8re principale, \u00e0 le fondre avec d'autres \u00e9l\u00e9ments d'alliage, puis \u00e0 le mouler sous pression.<\/p>\n

Une fois les mat\u00e9riaux fondus \u00e0 haute temp\u00e9rature, ils sont directement moul\u00e9s pour former des produits. En g\u00e9n\u00e9ral, la fusion s'effectue dans un four \u00e0 arc \u00e9lectrique, puis le m\u00e9tal est coul\u00e9 dans un moule r\u00e9sistant aux hautes temp\u00e9ratures, avant d'\u00eatre refroidi, cristallis\u00e9, recuit ou d\u00e9coup\u00e9 pour obtenir les produits finis. Au cours de la production, l\u2019atmosph\u00e8re de fusion, la temp\u00e9rature de fusion et les conditions de refroidissement sont contr\u00f4l\u00e9es afin de garantir une efficacit\u00e9 de production \u00e9lev\u00e9e, une cristallisation conforme aux exigences et la formation d\u2019une structure r\u00e9ticulaire.<\/p>\n

Plusieurs param\u00e8tres cl\u00e9s du processus de moulage :<\/p>\n

1. La temp\u00e9rature du four est g\u00e9n\u00e9ralement r\u00e9gl\u00e9e \u00e0 1 050 \u00b0C pendant la fusion, et la temp\u00e9rature du mat\u00e9riau doit \u00eatre surveill\u00e9e tout au long du processus afin de veiller \u00e0 ce que la temp\u00e9rature du m\u00e9tal ne d\u00e9passe pas 770 \u00b0C.<\/p>\n

2. Proc\u00e9der \u00e0 l'\u00e9cumage des scories \u00e0 une temp\u00e9rature d'environ 735 \u00b0C, ce qui favorise la s\u00e9paration entre les scories et le bain de fusion.<\/p>\n

3. Le raffinage recourt g\u00e9n\u00e9ralement \u00e0 une m\u00e9thode de raffinage secondaire, le raffinage primaire \u00e9tant effectu\u00e9 avec agent de raffinage<\/a>, et le raffinage secondaire s'effectue selon la m\u00e9thode de raffinage au gaz.<\/p>\n

4. En r\u00e8gle g\u00e9n\u00e9rale, la coul\u00e9e doit \u00eatre effectu\u00e9e dans les 30 minutes \u00e0 1 heure suivant la mise en position invers\u00e9e du four ; dans le cas contraire, il faudra proc\u00e9der \u00e0 un nouvel affinage.<\/p>\n

5. Il est n\u00e9cessaire d'ajouter en continu du fil Ai-Ti-B pendant le processus de coul\u00e9e afin d'affiner le grain.<\/p>\n

6. Le processus de d\u00e9gazage et de filtration est essentiel pour obtenir un m\u00e9tal liquide pur.<\/p>\n

\"Zone<\/p>\n

Proc\u00e9d\u00e9 de coul\u00e9e et de laminage : m\u00e9tal liquide, bo\u00eetier de r\u00e9gulation de d\u00e9bit<\/a>\u00a0(contr\u00f4le du niveau de liquide), fonderie et laminoir (syst\u00e8me de lubrification, eau de refroidissement), cisaille, enrouleuse.<\/p>\n

La temp\u00e9rature de coul\u00e9e-laminage se situe g\u00e9n\u00e9ralement entre 680 \u00b0C et 700 \u00b0C ; plus elle est basse, mieux c'est. Une ligne de coul\u00e9e-laminage stable s'arr\u00eate g\u00e9n\u00e9ralement une fois par mois au maximum, et la plaque est remise en place. Au cours du processus de production, le niveau de liquide dans la cuve avant doit \u00eatre strictement contr\u00f4l\u00e9 afin d'\u00e9viter toute baisse de ce niveau.<\/p>\n

La vitesse de production se situe g\u00e9n\u00e9ralement entre 1,5 m\/min et 2,5 m\/min. La qualit\u00e9 de surface des produits issus du laminage \u00e0 chaud est g\u00e9n\u00e9ralement m\u00e9diocre et ne permet g\u00e9n\u00e9ralement pas de r\u00e9pondre aux exigences des produits pr\u00e9sentant des propri\u00e9t\u00e9s physiques et chimiques particuli\u00e8res.<\/p>","protected":false},"excerpt":{"rendered":"

Casting and rolling process of aluminum strip is to use aluminum as the main raw material and melt it with other alloy elements, and then…<\/p>","protected":false},"author":1,"featured_media":4113,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4516],"class_list":["post-4112","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-casting-and-rolling-process"],"yoast_head":"\nCasting and Rolling Process in Aluminum Strip Furnace<\/title>\n<meta name=\"description\" content=\"Casting and rolling process is to use aluminum as the main raw material and melt it with other alloy elements, and then die-cast it.\" \/>\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\/casting-and-rolling-process\/\" \/>\n<meta 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