{"id":12263,"date":"2022-01-13T06:38:16","date_gmt":"2022-01-13T06:38:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12263"},"modified":"2022-01-13T06:38:16","modified_gmt":"2022-01-13T06:38:16","slug":"aluminum-melting-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-melting-refining\/","title":{"rendered":"Fusion et affinage de l'aluminium"},"content":{"rendered":"

La fusion et l'affinage de l'aluminium permettent de d\u00e9gazer et d'\u00e9liminer les impuret\u00e9s, ce qui rend la solution d'alliage d'aluminium plus pure et am\u00e9liore ses propri\u00e9t\u00e9s m\u00e9caniques.<\/p>\n

L'ajout d'agents d'affinage n\u00e9cessite de prendre en compte de nombreux \u00e9l\u00e9ments. Vous trouverez ci-dessous la m\u00e9thode d'utilisation sp\u00e9cifique.<\/p>\n

L'hydrog\u00e8ne et les scories d'oxyde flottantes peuvent \u00eatre \u00e9limin\u00e9s efficacement en ajoutant une quantit\u00e9 appropri\u00e9e d'agent de fusion de l'aluminium.<\/p>\n

La raison principale est que l'agent d'affinage se d\u00e9compose facilement \u00e0 haute temp\u00e9rature ; en particulier, le gaz produit est susceptible de subir des r\u00e9actions chimiques, et la forte capacit\u00e9 d'adsorption des scories permet \u00e0 l'hydrog\u00e8ne de s'\u00e9chapper de la masse fondue, ce qui lui conf\u00e8re un effet \u00e9vident d'\u00e9limination des scories.<\/p>\n

L'utilisation de agents de raffinage<\/a> est relativement simple ; vous pouvez vous renseigner davantage sur leur utilisation avant de les utiliser.<\/p>\n

\"Fusion<\/p>\n

R\u00e9pandre le plus uniform\u00e9ment possible \u00e0 la surface du liquide, enfoncer rapidement dans l'aluminium en fusion, bien m\u00e9langer jusqu'\u00e0 ce que le m\u00e9lange se stabilise, puis \u00e9liminer les scories.<\/p>\n

De plus, lors du processus d'utilisation, il est possible de recourir \u00e0 la pulv\u00e9risation, de pr\u00e9f\u00e9rence avec injection de gaz inerte. La quantit\u00e9 utilis\u00e9e est d'environ 0,31 TP3T par rapport au poids d'aluminium liquide. Si la puret\u00e9 de l'aluminium liquide est plus \u00e9lev\u00e9e, se reporter aux informations suppl\u00e9mentaires concernant les raffineurs.<\/p>\n

La m\u00e9thode de pulv\u00e9risation utilis\u00e9e pour la fusion-affinage de l'aluminium offre une plus grande surface de contact avec l'aluminium en fusion. L'agent d'affinage en poudre est pulv\u00e9ris\u00e9 dans la solution \u00e0 l'aide d'un pulv\u00e9risateur.<\/p>\n

Lors de la projection, l'azote et l'argon sont g\u00e9n\u00e9ralement utilis\u00e9s comme gaz vecteurs, ce qui entra\u00eene la formation d'un grand nombre de bulles dispers\u00e9es dans la solution d'alliage d'aluminium. Au cours du processus de remont\u00e9e des bulles, celles-ci entrent en contact total avec l'aluminium liquide, ce qui permet d'\u00e9liminer rapidement les gaz et les inclusions pr\u00e9sents dans l'aluminium liquide.<\/p>\n

L'ajout d'un agent d'affinage doit \u00eatre effectu\u00e9 en fonction du poids de l'aluminium liquide, car une quantit\u00e9 excessive ou insuffisante aura une incidence sur les performances de l'alliage d'aluminium ; il est donc indispensable de calculer cette quantit\u00e9 avant de proc\u00e9der \u00e0 l'ajout.<\/p>\n

Pendant le fonctionnement de l'agent d'affinage, l'op\u00e9rateur doit r\u00e9guler librement le d\u00e9bit d'affinage \u00e0 l'aide du barom\u00e8tre et du doseur de poudre, afin de contr\u00f4ler le degr\u00e9 de tourbillonnement de l'aluminium liquide et de r\u00e9duire la pollution secondaire.<\/p>\n

La quantit\u00e9 d'agent de raffinage est comprise entre 0,10 et 0,201 TP3T ; elle doit \u00eatre choisie en fonction des conditions r\u00e9elles d'utilisation.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum Melting Refining can degas and remove impurities, making aluminum alloy solution more pure and improving its mechanical properties. There are many considerations when adding…<\/p>","protected":false},"author":1,"featured_media":12264,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13158,13159],"class_list":["post-12263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-melting-refining","tag-metal-foundry-fluxes-use"],"yoast_head":"\nAluminum Melting Refining, Metal Foundry Fluxes Use<\/title>\n<meta name=\"description\" content=\"Aluminum Melting Refining can degas and remove impurities, making aluminum alloy solution more pure and improving its mechanical properties.\" \/>\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-melting-refining\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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