{"id":6893,"date":"2020-12-08T07:25:08","date_gmt":"2020-12-08T07:25:08","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6893"},"modified":"2020-12-08T07:25:08","modified_gmt":"2020-12-08T07:25:08","slug":"porous-ceramic-materials","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/porous-ceramic-materials\/","title":{"rendered":"Mat\u00e9riaux c\u00e9ramiques poreux"},"content":{"rendered":"<p>La cuisson des mat\u00e9riaux filtrants c\u00e9ramiques poreux s'effectue g\u00e9n\u00e9ralement \u00e0 une temp\u00e9rature sup\u00e9rieure \u00e0 celle \u00e0 laquelle la phase vitreuse du mat\u00e9riau peut se former et \u00e0 laquelle la liaison peut s'op\u00e9rer, ce qui permet d'obtenir les caract\u00e9ristiques de r\u00e9sistance m\u00e9canique et de r\u00e9sistance \u00e0 la corrosion requises pour le produit final. La cuisson s'effectue g\u00e9n\u00e9ralement dans un four continu pendant 1 \u00e0 3 heures, la temp\u00e9rature maximale \u00e9tant maintenue pendant 15 minutes \u00e0 1 heure. Une temp\u00e9rature plus basse et une dur\u00e9e plus courte peuvent am\u00e9liorer la rentabilit\u00e9 de la production. Cependant, il est indispensable de pr\u00e9voir un temps et une temp\u00e9rature suffisants pour que le mat\u00e9riau acqui\u00e8re la r\u00e9sistance m\u00e9canique et la r\u00e9sistance \u00e0 la corrosion requises.<\/p>\n<p>La taille des pores du <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-filter-media\/\">m\u00e9dium filtrant<\/a> est principalement d\u00e9termin\u00e9e par la taille initiale des pores de la mousse polym\u00e8re utilis\u00e9e dans ce proc\u00e9d\u00e9. Afin de filtrer efficacement les alliages d\u2019aluminium, la taille des pores primaires est g\u00e9n\u00e9ralement comprise entre 10 et 70 trous par pouce lin\u00e9aire. Cependant, chaque application n\u00e9cessitera des tailles de pores sp\u00e9cifiques en fonction des exigences de l\u2019atelier de coul\u00e9e ou de la machine \u00e0 billettes dans une application donn\u00e9e, en termes d\u2019efficacit\u00e9 de filtration et de perm\u00e9abilit\u00e9 requise du m\u00e9dia filtrant.<\/p>\n<p>Dans ce domaine, la taille des pores d\u00e9signe g\u00e9n\u00e9ralement le nombre de trous sur une longueur donn\u00e9e, par exemple le nombre de trous par pouce. Une valeur PPI plus \u00e9lev\u00e9e correspond \u00e0 un diam\u00e8tre de trou plus petit. Il s'agit de la m\u00e9thode standard utilis\u00e9e pour exprimer l'ouverture.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6895\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/12\/Porous-Ceramic-Materials.jpg\" alt=\"Mat\u00e9riaux c\u00e9ramiques poreux\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Porous-Ceramic-Materials.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Porous-Ceramic-Materials-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>La densit\u00e9 des mat\u00e9riaux c\u00e9ramiques poreux est g\u00e9n\u00e9ralement exprim\u00e9e sous forme de densit\u00e9 relative. La densit\u00e9 relative correspond au rapport entre la densit\u00e9 mesur\u00e9e et la densit\u00e9 th\u00e9orique, cette derni\u00e8re \u00e9tant la densit\u00e9 obtenue en supposant l'absence totale de pores.<\/p>\n<p>Tester l'ensemble du m\u00e9dia filtrant. La dur\u00e9e de l'essai est g\u00e9n\u00e9ralement comprise entre 35 et 120 minutes. Choisir l'emplacement d'essai et utiliser \u00e0 cet emplacement de l'AA6063, de l'AA6061 ou d'autres alliages d'aluminium contenant du magn\u00e9sium. Utiliser des joints de m\u00e9dia filtrant standard et respecter les conditions de pr\u00e9chauffage du m\u00e9dia filtrant. Les donn\u00e9es recueillies comprennent le d\u00e9bit du m\u00e9tal et les conditions de coul\u00e9e, la temp\u00e9rature du m\u00e9tal en fusion, ainsi que les r\u00e9sultats de l'observation visuelle de l'\u00e9tat du milieu filtrant pendant le processus de pr\u00e9chauffage et imm\u00e9diatement apr\u00e8s la coul\u00e9e. Apr\u00e8s la coul\u00e9e, une analyse m\u00e9tallurgique des milieux filtrants usag\u00e9s a \u00e9t\u00e9 r\u00e9alis\u00e9e afin d'\u00e9valuer leur capacit\u00e9 \u00e0 r\u00e9sister \u00e0 l'alliance d'aluminium en fusion corrosive.<\/p>","protected":false},"excerpt":{"rendered":"<p>The firing of the porous ceramic filter materials is usually carried out at a temperature higher than the temperature at which the glass phase of&hellip;<\/p>","protected":false},"author":1,"featured_media":6894,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Porous Ceramic Materials Filter for Molten Aluminum<\/title>\n<meta name=\"description\" content=\"The pore size of porous ceramic filter materials is mainly determined by the polymer foam. The size is 10 to 70 holes\/inch.\" \/>\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\/porous-ceramic-materials\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Porous Ceramic Materials Filter for Molten Aluminum\" \/>\n<meta property=\"og:description\" content=\"The pore size of porous ceramic filter materials is mainly determined by the polymer foam. The size is 10 to 70 holes\/inch.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.alalloycasting.com\/fr\/porous-ceramic-materials\/\" \/>\n<meta property=\"og:site_name\" content=\"alalloycasting\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-08T07:25:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Porous-Ceramic-Materials-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"AdTech\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"AdTech\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\"},\"author\":{\"name\":\"AdTech\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/person\\\/431d9c832111002d5e0bf6dc57a33c20\"},\"headline\":\"Porous Ceramic Materials\",\"datePublished\":\"2020-12-08T07:25:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\"},\"wordCount\":359,\"publisher\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2020\\\/12\\\/Porous-Ceramic-Materials-1.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\",\"name\":\"Porous Ceramic Materials Filter for Molten Aluminum\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2020\\\/12\\\/Porous-Ceramic-Materials-1.jpg\",\"datePublished\":\"2020-12-08T07:25:08+00:00\",\"description\":\"The pore size of porous ceramic filter materials is mainly determined by the polymer foam. 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