{"id":9512,"date":"2021-07-10T06:07:28","date_gmt":"2021-07-10T06:07:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9512"},"modified":"2021-07-09T06:18:34","modified_gmt":"2021-07-09T06:18:34","slug":"inclusions-in-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/inclusions-in-molten-aluminum\/","title":{"rendered":"Inclusions dans l'aluminium fondu"},"content":{"rendered":"<p>Les inclusions pr\u00e9sentes dans l'aluminium fondu ont un impact consid\u00e9rable sur l'utilisation des t\u00f4les d'aluminium ; c'est pourquoi leur \u00e9limination doit faire l'objet d'un contr\u00f4le rigoureux tout au long du processus de production. Notre filtre en mousse c\u00e9ramique et notre syst\u00e8me de filtration sont largement utilis\u00e9s pour filtrer les inclusions pr\u00e9sentes dans l'aluminium fondu.<\/p>\n<p><strong>Les principales causes des inclusions dans l'aluminium fondu sont les suivantes :<\/strong><\/p>\n<p>(1) Au cours des op\u00e9rations d\u2019alimentation et d\u2019agitation, le film d\u2019oxyde form\u00e9 \u00e0 la surface du bain fondu est endommag\u00e9 et se m\u00e9lange \u00e0 l\u2019aluminium fondu. La densit\u00e9 du film d\u2019oxyde \u00e9tant similaire \u00e0 celle du bain fondu, sa s\u00e9dimentation est lente, et il peut facilement p\u00e9n\u00e9trer dans la t\u00f4le coul\u00e9e lors de la coul\u00e9e et du laminage. Le film d\u2019oxyde (Al\u2082O\u2083) contamine fortement le m\u00e9tal. Il pr\u00e9sente un point de fusion \u00e9lev\u00e9 et se trouve \u00e0 l\u2019\u00e9tat solide dans l\u2019aluminium liquide. Dans la t\u00f4le coul\u00e9e-lamin\u00e9e, il est nettement plus dur que la matrice et, \u00e0 mesure que la d\u00e9formation augmente, ces zones pr\u00e9senteront des d\u00e9fauts ressemblant \u00e0 des rayures.<\/p>\n<p>(2) Lorsque la machine est \u00e0 l'arr\u00eat, il y a davantage de scories et d'aluminium dans le <a href=\"http:\/\/www.alalloycasting.com\/fr\/casting-launder-2\/\">canal de coul\u00e9e<\/a>. Lorsque la plaque est r\u00e9utilis\u00e9e, les scories entra\u00eenent la p\u00e9n\u00e9tration de l'aluminium fondu dans la plaque lamin\u00e9e \u00e0 chaud, ce qui nuit \u00e0 la qualit\u00e9 de celle-ci. De plus, le feutre en fibres de silicate d\u2019aluminium sera endommag\u00e9 apr\u00e8s l\u2019arr\u00eat de la machine, ce qui entra\u00eenera un d\u00e9collement partiel. Ces r\u00e9sidus se retrouveront \u00e9galement dans la t\u00f4le coul\u00e9e-lamin\u00e9e avec l\u2019aluminium fondu lors de la production suivante. Apr\u00e8s un laminage \u00e0 froid d\u2019une certaine ampleur, des probl\u00e8mes de qualit\u00e9 de surface appara\u00eetront.<\/p>\n<p>(3) En ce qui concerne l'ajout de fil de raffinage de grain Al-Ti-B, \u00e9tant donn\u00e9 que les agglom\u00e9rats grossiers de TiAl\u2083 et de TiB\u2082 ne peuvent pas \u00eatre compl\u00e8tement dissous entre le moment de l'ajout et la fabrication de la t\u00f4le, ces agglom\u00e9rats s'allongent pour former des bandes au cours du processus de laminage. Lorsqu\u2019ils apparaissent \u00e0 la surface, apr\u00e8s traitement de surface, des d\u00e9fauts lin\u00e9aires semblables \u00e0 des rayures apparaissent.<\/p>\n<p>(4) \u00c9tant donn\u00e9 que le <a href=\"http:\/\/www.alalloycasting.com\/fr\/casting-tips-and-nozzle\/\">embouts et buses de coul\u00e9e<\/a> Le mat\u00e9riau utilis\u00e9 permet de fabriquer tr\u00e8s facilement des produits fritt\u00e9s ; apr\u00e8s 40 \u00e0 60 heures de production, ces produits fritt\u00e9s se d\u00e9tachent facilement et sont entra\u00een\u00e9s par l'aluminium en fusion vers la plaque lamin\u00e9e.<\/p>","protected":false},"excerpt":{"rendered":"<p>The inclusions in molten aluminum have a great impact on the use of aluminum plates, so the removal of inclusions must be strictly controlled during&hellip;<\/p>","protected":false},"author":1,"featured_media":9513,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9512","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>Inclusions in Molten Aluminum, Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"The inclusions in molten aluminum have a great impact on the use of aluminum plates, so the inclusions must be strictly controlled.\" \/>\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\/inclusions-in-molten-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" 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