{"id":8940,"date":"2021-05-27T06:02:12","date_gmt":"2021-05-27T06:02:12","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8940"},"modified":"2021-05-27T06:02:12","modified_gmt":"2021-05-27T06:02:12","slug":"advanced-filtering-devices","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/advanced-filtering-devices\/","title":{"rendered":"Dispositifs de filtrage avanc\u00e9s"},"content":{"rendered":"

Des dispositifs de filtration avanc\u00e9s sont utilis\u00e9s dans les ateliers de fusion et de coul\u00e9e des usines de transformation de l'aluminium ; il s'agit principalement de dispositifs de filtration CFF, de dispositifs de filtration \u00e0 lit profond et de dispositifs de filtration tubulaires. La filtration par mousse c\u00e9ramique et la filtration \u00e0 lit profond rel\u00e8vent de la filtration interne, tandis que la filtration tubulaire repose sur une double capture des impuret\u00e9s, \u00e0 la fois en surface et \u00e0 l'int\u00e9rieur.<\/p>\n

Les impuret\u00e9s pr\u00e9sentes dans la masse fondue d\u2019alliage d\u2019aluminium contiennent plus ou moins de gaz, diverses inclusions non m\u00e9talliques et d\u2019autres m\u00e9taux nuisibles. La pr\u00e9sence de ces impuret\u00e9s affecte directement la qualit\u00e9 de l\u2019alliage d\u2019aluminium, provoquant l\u2019apparition, dans les lingots, de d\u00e9fauts tels que la porosit\u00e9, des pores, des inclusions de scories, etc. Ces d\u00e9fauts ont \u00e0 leur tour des effets n\u00e9fastes sur les propri\u00e9t\u00e9s m\u00e9caniques, les propri\u00e9t\u00e9s d'usinage, la r\u00e9sistance \u00e0 la corrosion, les propri\u00e9t\u00e9s de traitement de surface et l'aspect des produits transform\u00e9s en aval. Afin de pallier les effets n\u00e9fastes susmentionn\u00e9s, la purification de la masse fondue dans la production de pi\u00e8ces moul\u00e9es en alliage d'aluminium rev\u00eat une importance capitale.<\/p>\n

\u00c0 l'heure actuelle, la purification par filtration \u00e0 l'aide de filtres en mousse c\u00e9ramique constitue la m\u00e9thode la plus efficace pour \u00e9liminer les inclusions non m\u00e9talliques pr\u00e9sentes dans l'aluminium fondu et les alliages d'aluminium. Sans la garantie d'un processus de traitement de la masse fondue adapt\u00e9, ce mat\u00e9riau ne peut pas remplir pleinement son r\u00f4le.<\/p>\n

\"Filtre<\/p>\n

Depuis les premiers essais concluants men\u00e9s dans les ann\u00e9es 1970 sur les filtres en mousse c\u00e9ramique destin\u00e9s aux alliages d'aluminium, cette technologie a connu un d\u00e9veloppement rapide et est aujourd'hui la plus r\u00e9pandue dans les usines de transformation de l'aluminium. Les filtres en mousse c\u00e9ramique sont int\u00e9gr\u00e9s \u00e0 des dispositifs de filtration de pointe, ce qui permet d'obtenir de meilleurs r\u00e9sultats.<\/p>\n

Les dispositifs de filtration avanc\u00e9s se g\u00e9n\u00e9ralisent de plus en plus, car les exigences en mati\u00e8re de qualit\u00e9 des produits en aluminium ne cessent d'augmenter. Le filtre en c\u00e9ramique pour la coul\u00e9e<\/a> Ce proc\u00e9d\u00e9 permet non seulement d'\u00e9liminer efficacement un grand nombre d'inclusions d'oxyde pr\u00e9sentes dans l'aluminium fondu, mais aussi de filtrer les petites inclusions de quelques microns, ce qui est impossible avec les technologies traditionnelles.<\/p>\n

La technologie AdTech offre de bons r\u00e9sultats sur les filtres en mousse c\u00e9ramique import\u00e9s. Le niveau de filtration (taille des pores) varie entre 20 PPI et 80 PPI, mais les valeurs les plus couramment utilis\u00e9es sont 30 PPI et 50 PPI. La conception des filtres en mousse c\u00e9ramique comprend des mod\u00e8les \u00e0 filtration monocouche et \u00e0 filtration double couche.<\/p>","protected":false},"excerpt":{"rendered":"

Advanced filtering devices are used in the melting and casting workshops of aluminum processing plants, mainly including CFF filtering devices, deep bed filtering devices, and…<\/p>","protected":false},"author":1,"featured_media":8941,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-8940","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-filtering-equipment"],"yoast_head":"\nAdvanced Filtering Devices for Molten Aluminum Casting<\/title>\n<meta name=\"description\" content=\"Advanced filtering devices are used in the melting and casting workshops of aluminum processing plants, including CFF filtering devices.\" \/>\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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