{"id":7485,"date":"2021-01-12T08:22:10","date_gmt":"2021-01-12T08:22:10","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7485"},"modified":"2021-01-12T08:22:10","modified_gmt":"2021-01-12T08:22:10","slug":"ceramic-filters-for-aluminum-foundry","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/ceramic-filters-for-aluminum-foundry\/","title":{"rendered":"Filtres en c\u00e9ramique pour fonderie d'aluminium"},"content":{"rendered":"

Les filtres en mousse c\u00e9ramique pr\u00e9sentent les avantages suivants : bonne stabilit\u00e9 chimique, r\u00e9sistance sp\u00e9cifique \u00e9lev\u00e9e, r\u00e9sistance aux hautes temp\u00e9ratures, r\u00e9sistance aux chocs thermiques, grande surface sp\u00e9cifique, bonne efficacit\u00e9 d'\u00e9limination des scories, simplicit\u00e9 d'utilisation, facilit\u00e9 d'association avec d'autres composants et faible co\u00fbt. C'est pourquoi la filtration du m\u00e9tal en fusion \u00e0 l'aide de filtres en mousse c\u00e9ramique est devenue une m\u00e9thode de purification courante dans les fonderies d'aluminium.<\/p>\n

La technologie de filtration des m\u00e9taux en fusion \u00e0 l'aide de filtres en mousse c\u00e9ramique a fait son apparition dans les ann\u00e9es 1970 et est largement utilis\u00e9e aux \u00c9tats-Unis, au Canada, au Japon, en France, en Australie et en Suisse.<\/p>\n

Ces derni\u00e8res ann\u00e9es, de nouvelles technologies de purification de l'aluminium fondu ont fait l'objet d'\u00e9tudes, telles que le traitement dynamique sous vide, la purification par d\u00e9gazage continu par ultrasons, les filtres en c\u00e9ramique de corindon, etc., et elles ont donn\u00e9 de bons r\u00e9sultats. Cependant, ces m\u00e9thodes techniques sont relativement complexes et co\u00fbteuses, et il est difficile de les g\u00e9n\u00e9raliser \u00e0 grande \u00e9chelle dans la production.<\/p>\n

Quant \u00e0 la filtration \u00e0 l'aide d'un filtre m\u00e9tallique et d'un tissu en fibres, elle ne permet d'\u00e9liminer que les grosses inclusions pr\u00e9sentes dans la masse fondue d'alliage d'aluminium, mais ne permet pas d'\u00e9liminer les inclusions inf\u00e9rieures au microm\u00e8tre. Le filtre m\u00e9tallique entra\u00eene \u00e9galement une contamination de l'alliage d'aluminium. L'utilisation de filtres en mousse c\u00e9ramique dans les fonderies d'aluminium permet d'\u00e9liminer les inclusions fines et d'am\u00e9liorer consid\u00e9rablement les propri\u00e9t\u00e9s m\u00e9caniques et l'aspect des pi\u00e8ces moul\u00e9es.<\/p>\n

\"Filtres<\/p>\n

L'utilisation de mat\u00e9riaux r\u00e9sistants aux hautes temp\u00e9ratures aura un impact positif sur votre productivit\u00e9 ! AdTech propose filtres en mousse c\u00e9ramique d'alumine<\/a> pour la fonderie d'aluminium.<\/p>\n

Les filtres en mousse c\u00e9ramique sp\u00e9cialement con\u00e7us par AdTech sont fabriqu\u00e9s \u00e0 partir d'oxyde d'aluminium, leur mati\u00e8re premi\u00e8re de base. Ils sont fabriqu\u00e9s avec des porosit\u00e9s variant de 10 \u00e0 60 pores par pouce (PPI). De plus, des kits combin\u00e9s sont disponibles en 20-30 PPI et d'autres options sont possibles. Diff\u00e9rentes tailles et des filtres sur mesure sont fabriqu\u00e9s selon les sp\u00e9cifications fournies.<\/p>\n

Le filtre en mousse c\u00e9ramique d'alumine pr\u00e9sente une structure multicouche et des trous traversants multidimensionnels, qui communiquent entre eux. Lors de la filtration, l'aluminium fondu entra\u00eene des inclusions le long des canaux sinueux et des pores. Lorsque l'aluminium fondu entre en contact avec le squelette en mousse de la plaque filtrante, il est directement intercept\u00e9, adsorb\u00e9 et d\u00e9pos\u00e9. Lorsque la masse fondue s'\u00e9coule dans le trou, le canal de la plaque filtrante est courb\u00e9, ce qui modifie la direction d'\u00e9coulement de la masse fondue ; les inclusions entrent alors en collision avec la paroi du trou et y adh\u00e8rent fermement.<\/p>","protected":false},"excerpt":{"rendered":"

The ceramic foam filters have the advantages of good chemical stability, high specific strength, high-temperature resistance, thermal shock resistance, large specific surface area, good slag…<\/p>","protected":false},"author":1,"featured_media":7486,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nCeramic Filters for Aluminum Foundry -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Ceramic filters molten metal filtration have become a conventional purification method in aluminum foundry. 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