mat\u00e9riaux c\u00e9ramiques alv\u00e9olaires<\/a> a vu le jour dans les ann\u00e9es 1970 ; il s'agit d'un mat\u00e9riau poreux pr\u00e9sentant des propri\u00e9t\u00e9s \u00e0 haute temp\u00e9rature.
\nLa taille de ses pores varie de quelques nanom\u00e8tres \u00e0 quelques microm\u00e8tres. Il s'agit d'un corps c\u00e9ramique poreux \u00e0 haute porosit\u00e9, dot\u00e9 d'une structure r\u00e9ticulaire tridimensionnelle. La porosit\u00e9 est comprise entre 20% et 95%. Sa texture s'apparente \u00e0 celle d'une mousse tremp\u00e9e ou de la porcelaine. La temp\u00e9rature d'utilisation de cette \u00e9ponge va de la temp\u00e9rature ambiante \u00e0 1 600 \u2103.
\nDepuis que les \u00c9tats-Unis ont mis au point, en 1978, l'utilisation de suspensions c\u00e9ramiques telles que l'alumine et le kaolin pour d\u00e9velopper avec succ\u00e8s des c\u00e9ramiques expans\u00e9es destin\u00e9es \u00e0 la coul\u00e9e d'alliages d'aluminium et \u00e0 la filtration, la Grande-Bretagne, le Japon, l'Allemagne, la Suisse et d'autres pays se sont lanc\u00e9s dans une course \u00e0 la recherche.
\nLe processus de fabrication des filtres Asian Foundry Filter ne cesse de gagner en sophistication, tandis que les \u00e9quipements techniques sont de plus en plus m\u00e9canis\u00e9s et automatis\u00e9s. En fonction des diff\u00e9rentes applications vis\u00e9es, toute une gamme de mat\u00e9riaux a \u00e9t\u00e9 mise au point pour les filtres en c\u00e9ramique expans\u00e9e, adapt\u00e9s \u00e0 divers usages.
\nTelles que l'A1203, le ZrO\u2082, le SiC, le nitrure de silicium, le borure et d'autres c\u00e9ramiques expans\u00e9es r\u00e9sistantes aux hautes temp\u00e9ratures ; certaines contiennent \u00e9galement des min\u00e9raux tels que la mullite, le Dong Qingshi, les cendres volantes, les cendres de charbon, etc. Ces produits ont \u00e9t\u00e9 standardis\u00e9s et commercialis\u00e9s en s\u00e9rie, donnant ainsi naissance \u00e0 une nouvelle industrie.<\/p>\n![\"Filtre](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/07\/Asian-Foundry-Filter.jpg\")
<\/p>\n
La Chine est un grand producteur de produits en aluminium, et sa production a toujours \u00e9t\u00e9 la plus importante au monde, mais elle concerne principalement des produits bas de gamme. Face \u00e0 l\u2019expansion continue de la demande du march\u00e9, les produits en aluminium doivent \u00e9voluer vers le haut de gamme. L'utilisation de plaques filtrantes en c\u00e9ramique alv\u00e9ol\u00e9e permet d'am\u00e9liorer la qualit\u00e9 des produits en aluminium et d'\u00e9lever leur niveau de qualit\u00e9 afin de r\u00e9pondre aux exigences du march\u00e9 haut de gamme. D'o\u00f9 la demande en plaques filtrantes.<\/p>\n
Il convient de souligner tout particuli\u00e8rement qu'il faut \u00e9viter toute pollution secondaire de la masse fondue qui pourrait survenir au cours des \u00e9tapes de solidification et de mise en forme, une fois que la masse d'aluminium fondue a quitt\u00e9 le caisson de filtration.
\nDans ce processus, il convient d'utiliser de l'aluminium antiadh\u00e9sif \u00e0 haute r\u00e9sistance et \u00e0 longue dur\u00e9e de vie, ainsi qu'un bac de frittage, un bo\u00eetier avant, une plaque de distribution et un capuchon chauffant en c\u00e9ramique de silice fondue offrant une bonne isolation thermique ; il est \u00e9galement n\u00e9cessaire de proc\u00e9der \u00e0 une d\u00e9shumidification et \u00e0 un nettoyage r\u00e9guliers afin d'\u00e9liminer les sources de pollution potentielles.<\/p>\n
Les filtres Asian Foundry constituent la derni\u00e8re \u00e9tape du processus de purification de l'aluminium fondu. Ils sont indispensables pour garantir la propret\u00e9 de l'aluminium fondu.<\/p>","protected":false},"excerpt":{"rendered":"
Asian Foundry Filter removes inclusions in aluminum alloy melt. Inclusions and gases in the metal have a significant impact on the strength, corrosion resistance, and…<\/p>","protected":false},"author":1,"featured_media":3127,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1744],"class_list":["post-3126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-asian-foundry-filter"],"yoast_head":"\n
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