{"id":8207,"date":"2021-03-31T02:57:28","date_gmt":"2021-03-31T02:57:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8207"},"modified":"2021-03-31T02:57:28","modified_gmt":"2021-03-31T02:57:28","slug":"what-is-degassing-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/what-is-degassing-aluminum\/","title":{"rendered":"Qu'est-ce que le d\u00e9gazage de l'aluminium ?"},"content":{"rendered":"

Qu'est-ce que le d\u00e9gazage de l'aluminium ? Le d\u00e9gazage de l'aluminium vise principalement \u00e0 \u00e9liminer l'hydrog\u00e8ne pr\u00e9sent dans l'aluminium fondu.<\/p>\n

Au cours du processus de fusion d\u2019un alliage d\u2019aluminium moul\u00e9, l\u2019aluminium fondu contient une grande quantit\u00e9 d\u2019hydrog\u00e8ne. Lorsque l\u2019aluminium fondu se solidifie \u00e0 660 \u00b0C, la solubilit\u00e9 de l\u2019hydrog\u00e8ne diminue fortement. En raison de la vitesse de refroidissement \u00e9lev\u00e9e et de la basse temp\u00e9rature de la masse fondue, l\u2019hydrog\u00e8ne ne peut pas s\u2019\u00e9chapper de l\u2019aluminium solidifi\u00e9. L'hydrog\u00e8ne restant dans les pi\u00e8ces moul\u00e9es peut entra\u00eener des d\u00e9fauts de coul\u00e9e tels que des piq\u00fbres et un manque de compacit\u00e9. Par cons\u00e9quent, lors de la purification de la masse fondue d'alliage d'aluminium moul\u00e9 (\u00e9galement appel\u00e9e affinage), il est n\u00e9cessaire d'\u00e9liminer les gaz et les inclusions pr\u00e9sents dans la masse fondue d'aluminium.<\/p>\n

Quels produits utiliser pour d\u00e9gazer l'aluminium ?
\n\u00c0 l'heure actuelle, on utilise g\u00e9n\u00e9ralement des m\u00e9thodes de purification de l'aluminium fondu, telles que le flux, pour produire des alliages d'aluminium moul\u00e9s. Les principaux composants du flux utilis\u00e9 flux de raffinage<\/a> sont le sel de chlore et le sel de fluor. Le gaz produit par le sel de chlore ou le sel de fluor absorbe les impuret\u00e9s ou l'hydrog\u00e8ne pr\u00e9sents dans la masse fondue au cours du processus de flottation, ce qui permet d'\u00e9liminer les scories et de les \u00e9vacuer. Ce proc\u00e9d\u00e9 n\u00e9cessite g\u00e9n\u00e9ralement une agitation continue. Bien que cette m\u00e9thode d\u2019affinage soit relativement simple et peu co\u00fbteuse, le sel de chlore ou le sel de fluor produit moins de gaz et absorbe moins d\u2019impuret\u00e9s ou d\u2019hydrog\u00e8ne dans la masse fondue. L\u2019efficacit\u00e9 de l\u2019\u00e9limination des scories et du d\u00e9gazage n\u2019est pas optimale.<\/p>\n

AdTech \u00e9quipements de d\u00e9gazage en ligne<\/a> est devenu un \u00e9quipement auxiliaire indispensable sur la cha\u00eene de montage, assurant un d\u00e9gazage en continu et en ligne de l'aluminium fondu.<\/p>\n

\"Qu'est-ce<\/p>\n

Qu'est-ce que le d\u00e9gazage de l'aluminium \u00e0 l'aide d'un syst\u00e8me de d\u00e9gazage ?
\nLe gaz inerte dos\u00e9 est inject\u00e9 dans l'aluminium fondu par l'interm\u00e9diaire d'une tige en graphite rotative et d'un rotor. Le rotor fragmente le gaz inerte qui p\u00e9n\u00e8tre dans l'aluminium fondu en petites bulles r\u00e9parties uniform\u00e9ment dans le m\u00e9tal en fusion. Ces petites bulles de gaz inerte capturent l'hydrog\u00e8ne et les autres inclusions non m\u00e9talliques pr\u00e9sentes dans le m\u00e9tal en fusion, puis remontent ensemble \u00e0 la surface. Il est recommand\u00e9 d'utiliser de l'argon ou de l'azote d'une puret\u00e9 sup\u00e9rieure \u00e0 99,996%.<\/p>\n

Caract\u00e9ristiques des \u00e9quipements de d\u00e9gazage en ligne AdTech<\/p>\n

L'efficacit\u00e9 \u00e9lev\u00e9e du d\u00e9gazage rend l'alliage plus homog\u00e8ne.
\nL'effet de d\u00e9gazage est important : il permet d'augmenter le rendement de coul\u00e9e et d'am\u00e9liorer les propri\u00e9t\u00e9s m\u00e9caniques des pi\u00e8ces moul\u00e9es.
\nLa vitesse de rotation et le d\u00e9bit de gaz peuvent \u00eatre r\u00e9gl\u00e9s de mani\u00e8re \u00e0 obtenir la vitesse et le d\u00e9bit optimaux en fonction de la viscosit\u00e9 du m\u00e9tal en fusion.
\nLa structure est compacte et r\u00e9sistante, et les co\u00fbts d'entretien sont faibles.<\/p>","protected":false},"excerpt":{"rendered":"

What is degassing aluminum? Degassing aluminum is mainly to purify hydrogen in molten aluminum. During the smelting process of cast aluminum alloy, there will be…<\/p>","protected":false},"author":1,"featured_media":8208,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8207","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nWhat is Degassing Aluminum with Degassing System<\/title>\n<meta name=\"description\" content=\"What is Degassing Aluminum with Degassing System? The set inert gas is injected into the molten aluminum through the rotating rotor.\" \/>\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\/what-is-degassing-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Degassing Aluminum with Degassing System\" \/>\n<meta property=\"og:description\" content=\"What is Degassing Aluminum with Degassing System? 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