{"id":9539,"date":"2021-07-10T07:47:53","date_gmt":"2021-07-10T07:47:53","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9539"},"modified":"2021-07-09T07:55:25","modified_gmt":"2021-07-09T07:55:25","slug":"aluminum-melt-refining-in-furnace","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-melt-refining-in-furnace\/","title":{"rendered":"Affinage de l'aluminium fondu en four"},"content":{"rendered":"<p>L'affinage de l'aluminium fondu dans le four s'effectue en deux \u00e9tapes :<\/p>\n<p>La premi\u00e8re \u00e9tape consiste en un pr\u00e9-affinage dans le four de fusion. Lorsque la composition chimique et la temp\u00e9rature de l'alliage d'aluminium en fusion dans le four de fusion r\u00e9pondent aux exigences, de l'argon de haute puret\u00e9 est utilis\u00e9 comme gaz vecteur pour introduire l'agent d'affinage dans la masse d'aluminium en fusion afin de proc\u00e9der \u00e0 un pr\u00e9-affinage visant \u00e0 \u00e9liminer la plupart des inclusions d'oxyde et de l'hydrog\u00e8ne dissous dans la masse en fusion.<\/p>\n<p>La deuxi\u00e8me \u00e9tape consiste \u00e0 affiner le m\u00e9tal dans le four de maintien. Lorsque la masse fondue est introduite dans le four de maintien, une fois que la temp\u00e9rature a atteint le niveau requis, de l\u2019argon de haute puret\u00e9 est utilis\u00e9 comme gaz vecteur pour acheminer l\u2019agent d\u2019affinage dans la masse d\u2019aluminium fondue, et le tube d\u2019affinage est d\u00e9plac\u00e9 d\u2019avant en arri\u00e8re dans diff\u00e9rentes parties de la masse fondue afin d\u2019assurer l\u2019uniformit\u00e9 de l\u2019affinage.<\/p>\n<p>Au cours du processus d'affinage, il convient de r\u00e9gler la pression du gaz d'affinage ainsi que la profondeur d'immersion du tube d'affinage dans l'aluminium fondu. Il convient \u00e9galement de veiller \u00e0 ce que la hauteur de projection de l'aluminium fondu soit inf\u00e9rieure \u00e0 50 mm, et de r\u00e9duire au minimum la formation de scories d'oxydation ainsi que l'absorption de gaz par l'alliage fondu pendant le processus d'affinage.<\/p>\n<p>Une fois l'affinage termin\u00e9, l'agent de scellement calcul\u00e9 au pr\u00e9alable est ajout\u00e9 au bain d'alliage, le m\u00e9lange est agit\u00e9, puis la surface est recouverte d'un agent de recouvrement exempt de sodium et de calcium. Apr\u00e8s un temps de repos de 15 \u00e0 20 minutes, le lingot rond en alliage d'aluminium est pr\u00eat \u00e0 \u00eatre coul\u00e9.<\/p>\n<p>AdTech se consacre \u00e0 la recherche et au d\u00e9veloppement, \u00e0 la production et \u00e0 la commercialisation de fondants destin\u00e9s \u00e0 l'affinage de l'aluminium en fusion. Les fondants AdTech font appel \u00e0 une technologie unique permettant d'am\u00e9liorer les effets traditionnels de d\u00e9gazage et de d\u00e9carburation, et cette technologie s'applique au processus d'affinage en four.<\/p>\n<p>AdTech<a href=\"http:\/\/www.alalloycasting.com\/fr\/fluxes-for-aluminum-melting\/\"> fondants pour la fusion de l'aluminium<\/a> sont exempts de fum\u00e9e et de poussi\u00e8re lors de leur mise en place, ce qui am\u00e9liore l'environnement de travail des employ\u00e9s et prot\u00e8ge leur sant\u00e9. Les fondants pour coul\u00e9e d'aluminium AdTech \u00e9liminent compl\u00e8tement la corrosion des \u00e9quipements de l'usine et r\u00e9duisent les co\u00fbts cach\u00e9s. Ils emp\u00eachent l\u2019accumulation de scories dans le four, le canal de coul\u00e9e et les \u00e9quipements de d\u00e9gazage en ligne. Ils r\u00e9duisent consid\u00e9rablement la charge des \u00e9quipements de d\u00e9poussi\u00e9rage des gaz de combustion et diminuent les co\u00fbts d\u2019exploitation des \u00e9quipements de protection de l\u2019environnement. L\u2019efficacit\u00e9 de la s\u00e9paration entre les scories et l\u2019aluminium est bonne, ce qui permet de r\u00e9duire consid\u00e9rablement la teneur en aluminium des scories.<\/p>","protected":false},"excerpt":{"rendered":"<p>The aluminum melt refining in furnace is carried out in two steps: The first step is pre-refining in the melting furnace. When the chemical composition&hellip;<\/p>","protected":false},"author":1,"featured_media":9540,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9539","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Melt Refining in Furnace, Fluxes for Aluminum Melting<\/title>\n<meta name=\"description\" content=\"During the aluminum melt refining in furnace process, the refining gas is immersed into the molten aluminum by the refining tube.\" \/>\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-melt-refining-in-furnace\/\" \/>\n<meta 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