{"id":10575,"date":"2021-10-13T08:36:50","date_gmt":"2021-10-13T08:36:50","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10575"},"modified":"2022-03-10T05:19:18","modified_gmt":"2022-03-10T05:19:18","slug":"aluminium-degassing-system","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminium-degassing-system\/","title":{"rendered":"Syst\u00e8me de d\u00e9gazage de l'aluminium"},"content":{"rendered":"

Le syst\u00e8me de d\u00e9gazage de l'aluminium permet de traiter le m\u00e9tal ; il est install\u00e9 sur la ligne entre le four de maintien et la machine de coul\u00e9e. Les dispositifs de d\u00e9gazage en ligne pr\u00e9sentent de nombreux avantages. L'utilisation d'un dispositif de d\u00e9gazage en ligne permet un traitement en continu du m\u00e9tal en fusion, am\u00e9liorant ainsi la capacit\u00e9 de production. Le processus de d\u00e9gazage en ligne \u00e9limine compl\u00e8tement l'hydrog\u00e8ne et les autres impuret\u00e9s non m\u00e9talliques, tout en r\u00e9duisant les \u00e9missions nocives et les \u00e9cumes.<\/p>\n

Le d\u00e9gazeur rotatif<\/a> se caract\u00e9rise par un \u00e9coulement continu et des r\u00e9acteurs en s\u00e9rie \u00e0 m\u00e9lange complet. L'\u00e9limination de l'hydrog\u00e8ne r\u00e9sulte de la diffusion et du transfert de masse entre la phase gazeuse et la phase m\u00e9tallique. L'\u00e9tape principale qui d\u00e9termine la vitesse du processus de d\u00e9gazage est la diffusion de l'hydrog\u00e8ne \u00e0 travers la phase m\u00e9tallique liquide. Le jet de gaz rotatif agite vigoureusement la masse fondue, provoquant la fluidisation des particules m\u00e9talliques, ce qui entra\u00eene l'agr\u00e9gation des particules de taille non n\u00e9gligeable en particules plus grosses venant former la surface de la masse fondue. Les impuret\u00e9s qui remontent \u00e0 la surface du m\u00e9tal quittent le syst\u00e8me en m\u00eame temps que les scories.<\/p>\n

\"D\u00e9gazage<\/p>\n

Le syst\u00e8me de d\u00e9gazage de l'aluminium en ligne<\/a> Il remplit deux fonctions : le chauffage et le traitement. Le chauffage sert \u00e0 pr\u00e9chauffer le r\u00e9cipient avant le coulage de l'aluminium en fusion gr\u00e2ce \u00e0 un dispositif de chauffage install\u00e9 sur le couvercle du r\u00e9cipient, afin de maintenir la temp\u00e9rature du m\u00e9tal dans la plage de coul\u00e9e et d'augmenter cette temp\u00e9rature pendant le processus de coul\u00e9e.<\/p>\n

Aluminium fondu syst\u00e8me de d\u00e9gazage<\/a> consiste \u00e0 \u00e9liminer une certaine quantit\u00e9 d\u2019impuret\u00e9s (hydrog\u00e8ne, inclusions de scories) pr\u00e9sentes dans l\u2019aluminium fondu. Le proc\u00e9d\u00e9 de traitement adopt\u00e9 par l\u2019appareil repose sur le principe de la flottation par gaz. Le rotor injecte et disperse uniform\u00e9ment un gaz inerte, et de minuscules bulles remontent dans le bain de fusion. L'hydrog\u00e8ne est absorb\u00e9 par les bulles et \u00e9limin\u00e9 ; les inclusions de scories sont captur\u00e9es par les bulles : les plus grosses entrent en collision avec celles-ci, tandis que les plus petites sont retenues par la section radiale des bulles ; les inclusions de scories remontent ensuite \u00e0 la surface du bain fondu avec les bulles pour former des scories.<\/p>","protected":false},"excerpt":{"rendered":"

The aluminium degassing system can process metal, is installed on the line between the holding furnace and the casting machine. Online degassing devices have many…<\/p>","protected":false},"author":1,"featured_media":10576,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10575","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminium Degassing System -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The aluminium degassing system can process metal, is installed on the line between the holding furnace and the casting machine.\" \/>\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\/aluminium-degassing-system\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminium 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