filtre en mousse c\u00e9ramique<\/a>\u00a0n'est pas mouill\u00e9e par le m\u00e9tal en fusion et poss\u00e8de une forte capacit\u00e9 d'adsorption. Elle peut adsorber des inclusions solides fines ou des inclusions de flux liquides qui ne sont pas mouill\u00e9es par le m\u00e9tal en fusion. La plaque filtrante en mousse c\u00e9ramique permet non seulement de filtrer les particules d\u2019inclusions fines pouvant atteindre 10 \u00e0 20 \u03bcm dans la masse fondue de l\u2019alliage, mais aussi d\u2019\u00e9liminer les inclusions de flux liquides difficiles \u00e0 filtrer avec des m\u00e9dias filtrants classiques. Les principaux param\u00e8tres techniques de la plaque filtrante en mousse c\u00e9ramique sont la porosit\u00e9 et l\u2019uniformit\u00e9, la porosit\u00e9 traversante ou aveugle, la plan\u00e9it\u00e9, la r\u00e9sistance et la fragilit\u00e9. Avant utilisation, pr\u00e9chauffez et s\u00e9chez la plaque filtrante, puis tapotez-la l\u00e9g\u00e8rement avec la main pour \u00e9liminer les d\u00e9bris de c\u00e9ramique, afin d\u2019emp\u00eacher ceux-ci de p\u00e9n\u00e9trer dans l\u2019aluminium en fusion.<\/p>\n![\"M\u00e9canisme](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Ceramic-Foam-Filter-Filtration-Mechanism-1.jpg\")
<\/p>\n
D'apr\u00e8s l'analyse exp\u00e9rimentale fond\u00e9e sur les principes de la m\u00e9canique des fluides, gr\u00e2ce \u00e0 la configuration sinueuse du canal d'\u00e9coulement du filtre en mousse c\u00e9ramique, celui-ci pr\u00e9sente une tr\u00e8s grande capacit\u00e9 \u00e0 transformer l'\u00e9coulement turbulent du m\u00e9tal liquide en \u00e9coulement laminaire.<\/p>\n
Gr\u00e2ce \u00e0 l'action rectificatrice du filtre, le m\u00e9tal en fusion, qui pr\u00e9sentait \u00e0 l'origine une forte turbulence, devient laminaire lorsqu'il traverse le filtre. Apr\u00e8s avoir travers\u00e9 le filtre, il lui faut une zone de transition plus longue pour retrouver son \u00e9tat turbulent d'origine. Dans cette zone de transition, l'\u00e9coulement du liquide est trop lent pour redevenir turbulent ou le reste \u00e0 un degr\u00e9 moindre, ce qui permet d'\u00e9viter une oxydation secondaire du m\u00e9tal.<\/p>","protected":false},"excerpt":{"rendered":"
The foam ceramic filter plate is composed of a fine ceramic branch skeleton. The ceramic foam filter filtration mechanism has three aspects: one is to…<\/p>","protected":false},"author":1,"featured_media":5119,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5082","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
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