{"id":9503,"date":"2021-07-09T02:48:39","date_gmt":"2021-07-09T02:48:39","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9503"},"modified":"2021-07-09T02:48:39","modified_gmt":"2021-07-09T02:48:39","slug":"ceramic-foam-filter-for-metal-melt","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter-for-metal-melt\/","title":{"rendered":"Filtre en mousse c\u00e9ramique pour m\u00e9tal en fusion"},"content":{"rendered":"

Diverses technologies d'affinage en fusion ont permis d'am\u00e9liorer sans cesse la qualit\u00e9 des pi\u00e8ces moul\u00e9es. L'un de ces proc\u00e9d\u00e9s est ce qu'on appelle le filtre en mousse c\u00e9ramique destin\u00e9 \u00e0 la filtration des m\u00e9taux en fusion, qui est devenu le proc\u00e9d\u00e9 le plus avanc\u00e9, notamment dans les op\u00e9rations de moulage de l'aluminium.<\/p>\n

La fabrication de produits en aluminium de haute qualit\u00e9 n\u00e9cessite des proc\u00e9d\u00e9s complexes de traitement de la masse fondue, notamment dans un contexte o\u00f9 le recyclage et le d\u00e9veloppement durable occupent une place de plus en plus importante. La filtration est un proc\u00e9d\u00e9 couramment utilis\u00e9 pour \u00e9liminer les inclusions non m\u00e9talliques pr\u00e9sentes dans l'aluminium, et les filtres en mousse c\u00e9ramique (CFF) sont fr\u00e9quemment utilis\u00e9s comme m\u00e9dia filtrant.<\/p>\n

Le comportement de mouillage entre l'aluminium liquide et un substrat constitu\u00e9 de filtres en mousse c\u00e9ramique (CFF) \u00e0 base d'Al\u2082O\u2083 et de SiC industriels a \u00e9t\u00e9 \u00e9tudi\u00e9. Ce m\u00eame filtre CFF a \u00e9galement \u00e9t\u00e9 test\u00e9 dans le cadre d'une exp\u00e9rience de filtration \u00e0 l'\u00e9chelle industrielle. Les r\u00e9sultats de l'exp\u00e9rience de mouillage montrent que le mat\u00e9riau filtrant \u00e0 base de SiC pr\u00e9sente un meilleur effet de mouillage sur l'aluminium liquide que le mat\u00e9riau filtrant \u00e0 base d'Al\u2082O\u2083. Cela indique que le meilleur mouillage de l'aluminium sur le mat\u00e9riau filtrant constitue un avantage pour la p\u00e9n\u00e9tration du m\u00e9tal en fusion \u00e0 travers le filtre lors de la coul\u00e9e. De plus, gr\u00e2ce au meilleur contact entre le filtre et le m\u00e9tal, le meilleur mouillage du filtre \u00e0 l\u2019aluminium pourrait augmenter l\u2019efficacit\u00e9 d\u2019\u00e9limination des inclusions au cours du processus de filtration. Les inclusions non mouill\u00e9es sont plus faciles \u00e0 \u00e9liminer.<\/p>\n

Dans les fonderies d'aluminium, filtres en mousse c\u00e9ramique d'alumine<\/a> sont g\u00e9n\u00e9ralement utilis\u00e9s pour retenir les inclusions non m\u00e9talliques. Il est bien \u00e9tabli que les inclusions solides sont captur\u00e9es et retenues dans les grands pores du filtre, \u00e0 l\u2019interface m\u00e9tal-r\u00e9fractaire. En revanche, les inclusions liquides semblent \u00eatre captur\u00e9es et retenues selon deux m\u00e9canismes : l\u2019un dans la structure microporeuse du maillage du filtre, et l\u2019autre sous forme de film liquide \u00e0 l\u2019interface m\u00e9tal-filtre macroporeuse.<\/p>\n

Le r\u00f4le des filtres en mousse c\u00e9ramique dans la filtration des m\u00e9taux en fusion<\/strong><\/p>\n

Filtrer les inclusions pr\u00e9sentes dans le m\u00e9tal en fusion ;
\nRectification, m\u00e9tal en phase liquide turbulente ;
\nAm\u00e9liorer la qualit\u00e9 des pi\u00e8ces moul\u00e9es et r\u00e9duire les d\u00e9fauts de surface de celles-ci.<\/p>","protected":false},"excerpt":{"rendered":"

Various melt refining technologies have continuously improved the quality of castings. One such process is the so-called ceramic foam filter for metal melt filtration, which…<\/p>","protected":false},"author":1,"featured_media":9504,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9503","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nCeramic Foam Filter for Metal Melt,Alumina Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"One process is the so-called ceramic foam filter for metal melt filtration, which has become the most advanced process in aluminum casting.\" \/>\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\/ceramic-foam-filter-for-metal-melt\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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