{"id":9352,"date":"2021-06-27T06:34:17","date_gmt":"2021-06-27T06:34:17","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9352"},"modified":"2021-06-25T06:45:05","modified_gmt":"2021-06-25T06:45:05","slug":"alu-casting-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/alu-casting-filter\/","title":{"rendered":"Filtre pour pi\u00e8ces moul\u00e9es en aluminium"},"content":{"rendered":"

Le filtre en mousse c\u00e9ramique pour fonderie d'aluminium permet d'\u00e9liminer efficacement les inclusions pr\u00e9sentes dans la masse d'aluminium fondu et d'am\u00e9liorer consid\u00e9rablement la qualit\u00e9 des produits en aluminium. En raison de l'affinit\u00e9 de l'aluminium pour l'oxyg\u00e8ne, l'oxyde est l'inclusion la plus courante dans toutes les masses d'alliages d'aluminium fondus. Dans l'industrie moderne de la fonderie d'aluminium, lors du processus de fabrication des produits en aluminium, le filtre en mousse c\u00e9ramique de fonderie permet d'\u00e9liminer efficacement les impuret\u00e9s d'alumine pr\u00e9sentes dans la masse d'aluminium en fusion et d'am\u00e9liorer la qualit\u00e9 des produits en aluminium.<\/p>\n

Si les inclusions non m\u00e9talliques form\u00e9es dans la masse d'aluminium en fusion ne sont pas \u00e9limin\u00e9es, leur composition chimique reste tr\u00e8s stable, ce qui favorise l'apparition de fissures dans la pi\u00e8ce moul\u00e9e apr\u00e8s solidification. La pr\u00e9sence d\u2019inclusions non m\u00e9talliques rend les propri\u00e9t\u00e9s m\u00e9caniques des pi\u00e8ces moul\u00e9es difficiles \u00e0 pr\u00e9voir. L\u2019influence des inclusions d\u2019oxyde sur les propri\u00e9t\u00e9s de traction des alliages d\u2019aluminium est consid\u00e9r\u00e9e comme la principale cause de la d\u00e9gradation des propri\u00e9t\u00e9s m\u00e9caniques de ces alliages. Il est donc indispensable que les entreprises du secteur de l\u2019aluminium utilisent des filtres de coul\u00e9e Alu.<\/p>\n

Le filtre en mousse c\u00e9ramique CFF est largement utilis\u00e9 dans les grandes entreprises de transformation de l'aluminium en Russie, au Moyen-Orient et en Asie du Sud-Est. Lors de son utilisation, il convient non seulement d'\u00e9liminer les inclusions pr\u00e9sentes dans la masse d'aluminium en fusion, mais aussi d'\u00e9viter l'obstruction du filtre c\u00e9ramique et d'am\u00e9liorer la dur\u00e9e de vie du CFF.<\/p>\n

\"Filtration<\/p>\n

Principe de filtration du filtre pour moulage d'aluminium<\/h2>\n

Fonderie de filtres en c\u00e9ramique<\/a> Il s'agit d'un nouveau filtre c\u00e9ramique poreux constitu\u00e9 d'une \u00e9ponge industrielle servant de support, remplie de c\u00e9ramique r\u00e9fractaire puis fritt\u00e9e. Lorsque la plaque filtrante en c\u00e9ramique filtre l'aluminium, celui-ci s'\u00e9coule \u00e0 travers les alv\u00e9oles sinueuses du filtre c\u00e9ramique. Les impuret\u00e9s non m\u00e9talliques et le film d\u2019oxyde pr\u00e9sents dans la solution d\u2019aluminium subissent l\u2019effet de la pression axiale, du frottement et de l\u2019adsorption en surface par l\u2019aluminium liquide. L\u2019action combin\u00e9e de ces facteurs entra\u00eene le pi\u00e9geage des scories sur la surface interne des alv\u00e9oles et dans les interstices du filtre c\u00e9ramique, ce qui permet de s\u00e9parer les scories de l\u2019aluminium liquide.<\/p>\n

Apr\u00e8s une p\u00e9riode de filtration, les scories rest\u00e9es sur le filtre de coul\u00e9e participent \u00e9galement \u00e0 l'adsorption des scories, ce qui contribue au processus de filtration. \u00c9tant donn\u00e9 que les scories adsorb\u00e9es sur la plaque filtrante en c\u00e9ramique pr\u00e9sentent les m\u00eames caract\u00e9ristiques que l'aluminium liquide, leur rapport de surface est bien sup\u00e9rieur \u00e0 celui de la plaque filtrante en c\u00e9ramique et leur activit\u00e9 de surface est bien plus \u00e9lev\u00e9e que celle de l'aluminium. La plaque filtrante en c\u00e9ramique pr\u00e9sente donc une capacit\u00e9 d'adsorption et de r\u00e9tention des scories dans la solution d'aluminium bien sup\u00e9rieure \u00e0 celle de la plaque filtrante en c\u00e9ramique.<\/p>\n

De ce fait, la plaque filtrante en c\u00e9ramique peut retenir des particules plusieurs fois plus petites que ses propres orifices. Au cours du processus de filtration, les scories adsorb\u00e9es sur la plaque filtrante en c\u00e9ramique s\u2019accumulent progressivement apr\u00e8s avoir \u00e9t\u00e9 adsorb\u00e9es \u00e0 partir de l\u2019aluminium liquide. Sous l\u2019effet de l\u2019agitation et de l\u2019\u00e9rosion provoqu\u00e9es par l\u2019\u00e9coulement du liquide, les scories pr\u00e9sentant une r\u00e9sistance extr\u00eamement faible peuvent se briser ou se d\u00e9tacher de la plaque filtrante en c\u00e9ramique. Lors de la chute des scories, si la plaque filtrante en c\u00e9ramique est \u00e9paisse ou comporte des orifices, celles-ci peuvent \u00eatre intercept\u00e9es ou adsorb\u00e9es \u00e0 nouveau.<\/p>","protected":false},"excerpt":{"rendered":"

The Alu casting filter can effectively remove the inclusions in the aluminum melt and significantly improve the quality of aluminum products. Due to the oxygen…<\/p>","protected":false},"author":1,"featured_media":9353,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9352","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAlu Casting Filter, Ceramic Foam Filter for Foundry<\/title>\n<meta name=\"description\" content=\"The Alu casting filter can effectively remove the inclusions in the aluminum melt and significantly improve the quality of aluminum products.\" \/>\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\/alu-casting-filter\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alu Casting Filter, 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