{"id":7155,"date":"2020-12-23T02:12:33","date_gmt":"2020-12-23T02:12:33","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7155"},"modified":"2020-12-23T02:12:33","modified_gmt":"2020-12-23T02:12:33","slug":"ceramic-filter-for-aluminum-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/ceramic-filter-for-aluminum-casting\/","title":{"rendered":"Filtre en c\u00e9ramique pour la coul\u00e9e d'aluminium"},"content":{"rendered":"

Le filtre en c\u00e9ramique destin\u00e9 \u00e0 la coul\u00e9e d'aluminium permet non seulement d'\u00e9liminer efficacement un grand nombre d'impuret\u00e9s \u00e9trang\u00e8res pr\u00e9sentes dans l'aluminium fondu, mais aussi de filtrer les inclusions fines de quelques microns qui ne peuvent \u00eatre \u00e9limin\u00e9es par les proc\u00e9d\u00e9s traditionnels. Les atomes d'hydrog\u00e8ne et autres ions nocifs pr\u00e9sents dans l'aluminium fondu sont g\u00e9n\u00e9ralement adsorb\u00e9s sur ces inclusions, qui peuvent alors devenir le point de d\u00e9part de la formation de bulles.<\/p>\n

Par cons\u00e9quent, tout en \u00e9liminant les inclusions, le filtre c\u00e9ramique destin\u00e9 \u00e0 la coul\u00e9e d\u2019aluminium permet \u00e9galement de r\u00e9duire la teneur en \u00e9l\u00e9ments et gaz nocifs pr\u00e9sents dans l\u2019aluminium fondu. Certaines \u00e9tudes estiment \u00e9galement que le disque filtrant retient de nombreuses petites inclusions, r\u00e9duisant ainsi le nombre de germes de cristallisation n\u00e9cessaires \u00e0 la solidification de l\u2019aluminium fondu. Dans des conditions de sous-refroidissement plus importantes, les filtres en c\u00e9ramique destin\u00e9s \u00e0 la coul\u00e9e d\u2019aluminium peuvent favoriser la croissance des germes d\u2019aluminium, affiner la structure et am\u00e9liorer les performances du produit.<\/p>\n

Une fois la fusion termin\u00e9e, la surface de l'alliage d'aluminium pr\u00e9sente une importante quantit\u00e9 d'\u00e9cume, compos\u00e9e principalement d'Al\u2082O\u2083 et d'autres inclusions d'oxydes. Ces petites inclusions sont plus lourdes que l'aluminium en fusion, mais apr\u00e8s agglom\u00e9ration, leur densit\u00e9 devient plus faible et elles remontent \u00e0 la surface ; il est donc n\u00e9cessaire de proc\u00e9der \u00e0 un d\u00e9capage. Ajouter l'agent de d\u00e9cantation \u00e0 raison de 0,21 TP3T \u00e0 0,51 TP3T, le r\u00e9partir uniform\u00e9ment \u00e0 la surface de l'aluminium fondu, puis effectuer une agitation superficielle et homog\u00e8ne.<\/p>\n

Placez les scories sur la porte du four et fermez celle-ci pour les maintenir en place. D\u2019une part, l\u2019agent de nettoyage des scories produit un effet thermique et permet de faire fondre l\u2019aluminium en fusion adh\u00e9rant aux scories ; d\u2019autre part, il favorise un m\u00e9lange efficace entre les scories et l\u2019aluminium en fusion, ce qui facilite leur s\u00e9paration et est b\u00e9n\u00e9fique pour les scories. Apr\u00e8s avoir laiss\u00e9 reposer les scories pendant quelques minutes, les scories d'aluminium peuvent \u00eatre retir\u00e9es sans difficult\u00e9 de la porte du four. Apr\u00e8s l'affinage, l'aluminium fondu doit \u00e9galement \u00eatre d\u00e9gaz\u00e9 et filtr\u00e9. Le d\u00e9gazeur en ligne et Bo\u00eetier de filtre CFF<\/a> sont g\u00e9n\u00e9ralement install\u00e9s entre le four de fusion et la machine de coul\u00e9e.<\/p>\n

Filtre en mousse c\u00e9ramique d'alumine<\/a> Il est principalement utilis\u00e9 pour la filtration des alliages d'aluminium dans les ateliers de moulage et de fonderie. Le filtre CFF pr\u00e9sente une excellente r\u00e9sistance \u00e0 la corrosion par l'aluminium fondu, ce qui lui permet d'\u00e9liminer efficacement les inclusions et de r\u00e9duire les gaz r\u00e9siduels.<\/p>","protected":false},"excerpt":{"rendered":"

The ceramic filter for aluminum casting can not only effectively remove a large number of foreign impurities in the molten aluminum, but also filter out…<\/p>","protected":false},"author":1,"featured_media":7156,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-7155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"\nCeramic Filter for Aluminum Casting, Alumina Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Ceramic filter for aluminum casting can also reduce the content of these harmful elements and gases in the aluminum liquid.\" \/>\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\/ceramic-filter-for-aluminum-casting\/\" \/>\n<meta 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