{"id":11861,"date":"2021-12-17T07:13:16","date_gmt":"2021-12-17T07:13:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11861"},"modified":"2021-12-17T07:13:16","modified_gmt":"2021-12-17T07:13:16","slug":"metal-casting-filters","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/metal-casting-filters\/","title":{"rendered":"Filtres pour la fonderie de m\u00e9taux"},"content":{"rendered":"<p>Les filtres en mousse c\u00e9ramique moul\u00e9s dans le m\u00e9tal permettent d\u2019\u00e9liminer efficacement diverses inclusions pr\u00e9sentes dans l\u2019aluminium fondu, avec une finesse de l\u2019ordre du microm\u00e8tre. L\u2019aluminium fondu prend alors la forme d\u2019un \u00e9coulement laminaire r\u00e9gulier, ce qui favorise le rin\u00e7age. Ces filtres pr\u00e9sentent une bonne r\u00e9sistance m\u00e9canique et une bonne stabilit\u00e9 chimique, ainsi qu\u2019une excellente r\u00e9sistance au lessivage de l\u2019aluminium. Le contr\u00f4le rigoureux de la taille des alv\u00e9oles et du taux de per\u00e7age permet d\u2019obtenir un effet de filtration stable. Un joint en fibre c\u00e9ramique \u00e9tanche entoure les filtres en mousse c\u00e9ramique pour la coul\u00e9e des m\u00e9taux. Cela permet d\u2019assurer l\u2019\u00e9tanch\u00e9it\u00e9 du filtre dans le caisson de filtration et d\u2019emp\u00eacher tout \u00e9coulement lat\u00e9ral du m\u00e9tal en fusion.<\/p>\n<p>Lors de l'utilisation d'un filtre en mousse c\u00e9ramique, la taille des pores du filtre doit \u00eatre d\u00e9termin\u00e9e en fonction des exigences de qualit\u00e9 de la pi\u00e8ce moul\u00e9e et du nombre d'inclusions pr\u00e9sentes dans le m\u00e9tal en fusion. La taille du filtre doit \u00eatre choisie en fonction de la vitesse de coul\u00e9e et du poids de la coul\u00e9e.<\/p>\n<p>Afin de garantir l'efficacit\u00e9 du filtre, son emplacement et la conception du syst\u00e8me de commande doivent \u00e9galement respecter certaines sp\u00e9cifications.<\/p>\n<p>Le <a href=\"http:\/\/www.alalloycasting.com\/fr\/foam-ceramic-filter-for-casting\/\">filtre en c\u00e9ramique alv\u00e9ol\u00e9e pour la coul\u00e9e<\/a> consiste \u00e0 plonger l'\u00e9ponge de polyur\u00e9thane dans la suspension c\u00e9ramique, \u00e0 \u00e9vacuer l'exc\u00e9dent, \u00e0 la faire s\u00e9cher, puis \u00e0 la fritter \u00e0 haute temp\u00e9rature afin d'obtenir un mat\u00e9riau c\u00e9ramique poreux tridimensionnel.<\/p>\n<p>Le filtre en mousse c\u00e9ramique destin\u00e9 \u00e0 la coul\u00e9e pr\u00e9sente des pores reli\u00e9s entre eux en zigzag. C'est pr\u00e9cis\u00e9ment cette paroi tubulaire irr\u00e9guli\u00e8re qui joue un r\u00f4le essentiel dans la r\u00e9tention des petites inclusions pr\u00e9sentes dans la masse d'aluminium en fusion. Cette structure augmente \u00e9galement la surface de contact entre la masse d'aluminium en fusion et la partie c\u00e9ramique du filtre, ce qui accro\u00eet ainsi les chances d'adh\u00e9rence des particules d'inclusion.<\/p>\n<p>Dans le cadre de la production par moulage, l'efficacit\u00e9 de filtration permet d'\u00e9valuer l'effet purificateur du filtre en c\u00e9ramique expans\u00e9e moul\u00e9e sur l'alliage liquide de moulage.<\/p>\n<p>Dans le m\u00e9tal en fusion provenant de la m\u00eame coul\u00e9e ou de la m\u00eame poche de coul\u00e9e, des \u00e9chantillons sont pr\u00e9lev\u00e9s en haut et en bas de chaque pi\u00e8ce moul\u00e9e afin de d\u00e9terminer la propret\u00e9 des pi\u00e8ces moul\u00e9es filtr\u00e9es et non filtr\u00e9es. Utiliser un microscope optique et un microscope \u00e9lectronique \u00e0 balayage pour analyser la zone de concentration des inclusions.<\/p>","protected":false},"excerpt":{"rendered":"<p>Metal casting ceramic foam filters can effectively remove various inclusions in the aluminum water with a fineness of micrometers. The molten aluminum becomes a smooth&hellip;<\/p>","protected":false},"author":1,"featured_media":11862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[164,13060],"class_list":["post-11861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-filter-for-aluminum-casting","tag-metal-casting-filters"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metal Casting Filters, Ceramic Foam Filter for Aluminum Casting<\/title>\n<meta name=\"description\" content=\"Metal casting ceramic foam filters can effectively remove various inclusions in the aluminum water with a fineness of micrometers.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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