{"id":6570,"date":"2020-11-19T09:10:45","date_gmt":"2020-11-19T09:10:45","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6570"},"modified":"2020-11-19T09:10:45","modified_gmt":"2020-11-19T09:10:45","slug":"refining-and-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/refining-and-degassing\/","title":{"rendered":"Raffinage et d\u00e9gazage"},"content":{"rendered":"

La temp\u00e9rature de raffinage et de d\u00e9gazage se situe entre 720 et 750 \u00b0C.<\/p>\n

Le montant de agent de raffinage<\/a> est calcul\u00e9e selon la formule 0,1% - 0,2% de la masse totale de l'aluminium fondu. Placez-le dans la cuve d'affinage, activez l'interrupteur du pulv\u00e9risateur de poudre et injectez de l'azote. Lorsque le jet sort du tuyau d'affinage, vous pouvez l'introduire lentement dans les trois quarts de l'aluminium fondu pr\u00e9sent dans le four. Veillez \u00e0 la r\u00e9gularit\u00e9 du jet, ne laissez aucun angle mort et veillez \u00e0 ce que le jet ne touche pas le fond du four. La hauteur du jet doit \u00eatre maintenue en dessous de 15 mm et la dur\u00e9e doit \u00eatre sup\u00e9rieure \u00e0 15 minutes.<\/p>\n

Affiner, d\u00e9gazer et \u00e9liminer les scories, puis laisser reposer pendant 20 \u00e0 30 minutes avant de verser l'aluminium fondu pour la coul\u00e9e.<\/p>\n

Une fois les scories d'aluminium extraites du four, elles doivent \u00eatre rapidement transf\u00e9r\u00e9es dans le bac de scories, puis l'agent de scoriage doit \u00eatre saupoudr\u00e9 sur les scories d'aluminium \u00e0 raison de 1 \u00e0 2 kg par four, et l'op\u00e9ration de scoriage doit \u00eatre effectu\u00e9e imm\u00e9diatement. Pour s\u00e9parer le m\u00e9tal des scories d'aluminium, verser l'aluminium en fusion dans le moule en fonte, puis le laisser se solidifier en lingots d'aluminium pr\u00eats \u00e0 l'emploi.<\/p>\n

Lors de l'affinage, fermez le robinet d'huile du br\u00fbleur et arr\u00eatez le chauffage.<\/p>\n

En production en continu, une fois le four rempli d'aluminium fondu, la vanne de coul\u00e9e est ferm\u00e9e et le processus de fusion dans la partie inf\u00e9rieure du four est lanc\u00e9.<\/p>\n

Si les performances en mati\u00e8re de raffinage et de d\u00e9gazage ne sont pas optimales, Adtech propose une solution en ligne unit\u00e9 de d\u00e9gazage<\/a> et filtre en mousse c\u00e9ramique<\/a>\u00a0syst\u00e8me de filtration destin\u00e9 \u00e0 la purification de l'aluminium fondu.<\/p>\n

\"Purification<\/p>\n

Unit\u00e9 de d\u00e9gazage en ligne<\/strong> Il est principalement utilis\u00e9 pour \u00e9liminer l'hydrog\u00e8ne (H) et les scories de l'aluminium fondu. Il repose sur le principe de la flottation par gaz. Le rotor injecte un gaz inerte ou un m\u00e9lange de chlore et de gaz inerte dans l'aluminium fondu et divise le gaz en minuscules bulles dispers\u00e9es ; celles-ci remontent \u00e0 la surface de l'aluminium fondu et assurent ainsi l'\u00e9limination des impuret\u00e9s. Le syst\u00e8me de filtration CFF est utilis\u00e9 pour filtrer et purifier l\u2019aluminium fondu, en association avec un filtre en mousse c\u00e9ramique. Il permet de filtrer les inclusions et les particules fines pr\u00e9sentes dans l\u2019aluminium fondu.<\/p>","protected":false},"excerpt":{"rendered":"

The refining and degassing temperature is between 720-750\u2103. The amount of refining agent is calculated according to 0.1%-0.2% of the total mass of the aluminum…<\/p>","protected":false},"author":1,"featured_media":6585,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nRefining and Degassing Process for Molten Aluminum<\/title>\n<meta name=\"description\" content=\"The refining and degassing temperature is between 720-750\u2103.The amount of refining agent is calculated according to the aluminum melt.\" \/>\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\/refining-and-degassing\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" 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