{"id":4919,"date":"2020-09-19T04:34:32","date_gmt":"2020-09-19T04:34:32","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4919"},"modified":"2020-09-19T04:46:58","modified_gmt":"2020-09-19T04:46:58","slug":"degassing-effect-of-aluminum-liquid","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/degassing-effect-of-aluminum-liquid\/","title":{"rendered":"Effet de d\u00e9gazage de l'aluminium liquide"},"content":{"rendered":"

L'effet du d\u00e9gazage rotatif de l'aluminium liquide sur la densit\u00e9 au cours du processus de production est \u00e9tudi\u00e9 afin de garantir un contr\u00f4le efficace de la qualit\u00e9 du produit tout au long de ce processus.<\/p>\n

Apr\u00e8s la fusion et l'affinage d'un alliage d'aluminium moul\u00e9 sous pression (ADC12), l'influence de la position d'entr\u00e9e de l'eau, du moment d'ajout de l'agent d'affinage (avant et apr\u00e8s), du d\u00e9bit d'azote lors du d\u00e9gazage rotatif et de la vitesse de rotation de la tige rotative en graphite a \u00e9t\u00e9 analys\u00e9e. La densit\u00e9 de l'aluminium liquide a \u00e9t\u00e9 mesur\u00e9e et analys\u00e9e.<\/p>\n

Apr\u00e8s le d\u00e9gazage, l'efficacit\u00e9 du d\u00e9gazage de l'aluminium en fusion varie selon les emplacements du sous-contrat, et c'est pr\u00e8s du plateau tournant que le r\u00e9sultat est le moins satisfaisant.<\/p>\n

Le d\u00e9bit d'azote a une certaine influence sur la position des bulles. Les bulles g\u00e9n\u00e9r\u00e9es par un d\u00e9bit \u00e9lev\u00e9 se diffusent davantage, mais provoquent une agitation plus intense de l'aluminium en fusion, ce qui pr\u00e9sente un risque latent pour la s\u00e9curit\u00e9 de la production.<\/p>\n

Cette vitesse a une grande influence sur le d\u00e9gazage de l'aluminium liquide. Une vitesse de rotation \u00e9lev\u00e9e permet d'assurer une diffusion suffisante des gaz et d'emp\u00eacher l'aluminium liquide de s'agglom\u00e9rer.<\/p>\n

\"Effet<\/p>\n

Le flux de raffinage<\/a> ne peut pas \u00eatre utilis\u00e9 pour affiner l'aluminium liquide sous l'action d'un d\u00e9gazage rotatif ; la surface de l'aluminium liquide peut donc \u00eatre trait\u00e9e par \u00e9cumage. Il est recommand\u00e9 de traiter les scories d'aluminium en surface \u00e0 l'aide d'un agent de d\u00e9scorification. Selon les sp\u00e9cifications de l\u2019agent d\u2019affinage, sa temp\u00e9rature de fonctionnement est comprise entre 700 et 750 \u2103, tandis que celle du d\u00e9gazeur \u00e0 d\u00e9cantation ne doit pas \u00eatre inf\u00e9rieure \u00e0 680 \u2103. L\u2019agent d\u2019affinage n\u00e9cessite une temp\u00e9rature \u00e9lev\u00e9e de l\u2019aluminium liquide, ce qui est difficile \u00e0 contr\u00f4ler sur site.<\/p>\n

La vitesse de rotation et le d\u00e9bit d'azote doivent \u00eatre r\u00e9gl\u00e9s simultan\u00e9ment afin de garantir l'efficacit\u00e9 du d\u00e9gazage et d'\u00e9viter que l'aluminium en fusion ne forme des vagues et ne s'oxyde. Un d\u00e9bit de 15 L\/min \u00e0 400 tr\/min permet de r\u00e9pondre \u00e0 ces exigences.<\/p>\n

Au cours du processus de d\u00e9gazage, les mouvements de valse et les projections d'aluminium fondu ont une incidence sur le d\u00e9gazage et l'oxydation de l'aluminium fondu. Une fois le d\u00e9gazage termin\u00e9, la pr\u00e9sence de scories d'aluminium en surface et la densit\u00e9 de l'\u00e9chantillon permettent d'\u00e9valuer l'efficacit\u00e9 du d\u00e9gazage.<\/p>","protected":false},"excerpt":{"rendered":"

The rotary degassing effect of aluminum liquid on the density in the production process is studied to ensure the product quality can be effectively controlled…<\/p>","protected":false},"author":1,"featured_media":4926,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[4706],"class_list":["post-4919","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-degassing-effect-of-aluminum-liquid"],"yoast_head":"\nDegassing Effect of Aluminum Liquid by Rotary Degassing<\/title>\n<meta name=\"description\" content=\"The degassing effect of aluminum liquid at different positions in the subcontract is inconsistent, and the worst is near the turntable.\" \/>\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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