plaques filtrantes en c\u00e9ramique alv\u00e9ol\u00e9e<\/a>. Lorsque l'aluminium liquide traverse le filtre en c\u00e9ramique alv\u00e9olaire, dont les pores sont sinueux et interconnect\u00e9s, les impuret\u00e9s internes se d\u00e9posent sur la paroi des pores sous l'effet de la pression du fluide, de l'inertie, de l'interception, des collisions et de l'adsorption. L'aluminium liquide purifi\u00e9 peut ainsi atteindre la plaque de coul\u00e9e-laminage. L\u2019efficacit\u00e9 de filtration du filtre en c\u00e9ramique alv\u00e9olaire est directement li\u00e9e au diam\u00e8tre des micropores, mais le diam\u00e8tre des impuret\u00e9s intercept\u00e9es est bien inf\u00e9rieur au diam\u00e8tre moyen des micropores. L'utilisation d'une plaque filtrante comportant 12 trous\/cm et d'une \u00e9paisseur de 50 mm permet d'\u00e9liminer les impuret\u00e9s de type 80% et autres impuret\u00e9s sup\u00e9rieures \u00e0 100 \u03bcm.<\/p>\nAfin d'am\u00e9liorer l'efficacit\u00e9 de la filtration, il est \u00e9galement possible d'utiliser d'abord un treillis en fibre de verre pour la filtration grossi\u00e8re, puis des filtres en c\u00e9ramique alv\u00e9ol\u00e9e pour la filtration fine. Des essais ont d\u00e9montr\u00e9 que la filtration de l'aluminium liquide permet de r\u00e9duire de 44% le taux de rupture des extr\u00e9mit\u00e9s d'une feuille d'aluminium de 6 m d'\u00e9paisseur lors du laminage de finition. Les filtres en c\u00e9ramique alv\u00e9ol\u00e9e sont g\u00e9n\u00e9ralement remplac\u00e9s une fois par coul\u00e9e afin de garantir le d\u00e9bit de l'aluminium fondu et d'emp\u00eacher les d\u00e9bris et les particules de scories d\u00e9pos\u00e9s dans le canal de r\u00e9int\u00e9grer le bain d'aluminium fondu.<\/p>","protected":false},"excerpt":{"rendered":"
In view of the fact that after the aluminum material is melted, it will continue to oxidize and inhale, causing secondary pollution, so the time…<\/p>","protected":false},"author":1,"featured_media":8818,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8817","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
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