{"id":9859,"date":"2021-08-11T08:36:20","date_gmt":"2021-08-11T08:36:20","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9859"},"modified":"2021-08-11T08:36:20","modified_gmt":"2021-08-11T08:36:20","slug":"aluminum-foundry-degassing-device","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-foundry-degassing-device\/","title":{"rendered":"Dispositif de d\u00e9gazage pour fonderie d'aluminium"},"content":{"rendered":"

Par le pass\u00e9, les dispositifs de d\u00e9gazage rotatifs utilis\u00e9s dans les fonderies d\u2019aluminium servaient de syst\u00e8me de traitement visant \u00e0 am\u00e9liorer le d\u00e9gazage et l\u2019\u00e9limination des scories des alliages d\u2019aluminium en fusion. Ce type de dispositif de d\u00e9gazage rotatif est \u00e9quip\u00e9 d\u2019une buse qui injecte un gaz inerte au centre de l\u2019arbre du rotor, lequel tourne dans un seul sens. Lorsque le rotor en rotation est immerg\u00e9 dans l'alliage d'aluminium fondu, de l'argon, de l'azote ou un autre gaz inerte est pulv\u00e9ris\u00e9 et inject\u00e9 depuis la buse dans le m\u00e9tal fondu, tandis que le rotor tourne \u00e0 une vitesse comprise entre 200 et 650 tr\/min afin que les inclusions pr\u00e9sentes dans le m\u00e9tal en fusion, ainsi que d\u2019autres substances similaires, remontent \u00e0 la surface du m\u00e9tal en fusion accompagn\u00e9es de fines bulles, ce qui permet d\u2019effectuer simultan\u00e9ment le d\u00e9gazage et l\u2019\u00e9limination des scories.<\/p>\n

Ces derni\u00e8res ann\u00e9es, le secteur de l'AdTech a connu un dispositif de d\u00e9gazage en ligne<\/a> Dans le cas d'une fonderie d'aluminium, il permet d'injecter un gaz inerte au centre du rotor en rotation. L'utilisation de ce dispositif de d\u00e9gazage pour fonderie d'aluminium permet d'am\u00e9liorer efficacement les effets de d\u00e9gazage et de d\u00e9sscorification.<\/p>\n

\"Syst\u00e8me<\/p>\n

\n

L'unit\u00e9 de d\u00e9gazage utilise une nouvelle technologie de fabrication \u00e0 base d'un mat\u00e9riau de fusion \u00e0 haute teneur en silicium. Ses principaux composants sont un entra\u00eenement m\u00e9canique, un couvercle de cuve, un rotor et un \u00e9l\u00e9ment chauffant. Les \u00e9quipements de d\u00e9gazage AdTech permettent de r\u00e9pondre aux exigences techniques \u00e9lev\u00e9es li\u00e9es \u00e0 la fabrication de produits en aluminium. La machine de d\u00e9gazage de l'aluminium est install\u00e9e entre le four et la machine de coul\u00e9e ; sa fonction principale est d'\u00e9liminer l'hydrog\u00e8ne et d'autres r\u00e9sidus.<\/p>\n

Installez une machine de d\u00e9gazage de l'aluminium fondu entre le four de maintien et la machine de coul\u00e9e. Injectez de l'azote dans l'alliage d'aluminium fondu ; le gaz est alors fragment\u00e9 par le rotor en graphite en rotation situ\u00e9 dans la cuve de d\u00e9gazage. Il se forme alors un grand nombre de bulles dispers\u00e9es, ce qui permet \u00e0 l\u2019alliage d\u2019aluminium liquide d\u2019\u00eatre en contact total avec l\u2019azote dans la cuve de traitement. En raison de la diff\u00e9rence de pression atmosph\u00e9rique et du principe d\u2019adsorption de surface, les bulles absorbent l\u2019hydrog\u00e8ne et les scories oxyd\u00e9es. Elles remontent ensuite \u00e0 la surface de la masse fondue pour former une \u00e9cume. L\u2019alliage d\u2019aluminium fondu s\u2019\u00e9coule ensuite de la sortie de l\u2019unit\u00e9 de d\u00e9gazage vers la machine de coul\u00e9e. L\u2019alliage d\u2019aluminium liquide p\u00e9n\u00e8tre en continu dans le dispositif de d\u00e9gazage, et l\u2019azote y est insuffl\u00e9 en continu. Gr\u00e2ce \u00e0 ce processus de purification, la machine de d\u00e9gazage permet d\u2019atteindre l\u2019objectif de purification de l\u2019alliage d\u2019aluminium.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

In the past, aluminum foundry rotary degassing device was used as a treatment system to promote the degassing and slag removal effects of molten aluminum…<\/p>","protected":false},"author":1,"featured_media":9860,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[11570,146,642],"class_list":["post-9859","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit","tag-aluminum-foundry","tag-degassing-device","tag-online-degassing-system"],"yoast_head":"\nAluminum Foundry Degassing Device, Online Degassing System<\/title>\n<meta name=\"description\" content=\"In the past, aluminum foundry rotary degassing device was used as a treatment system to promote the degassing and slag removal effects.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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