{"id":8337,"date":"2021-04-07T05:34:44","date_gmt":"2021-04-07T05:34:44","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8337"},"modified":"2021-04-07T05:34:44","modified_gmt":"2021-04-07T05:34:44","slug":"aluminum-ceramic-foam-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-ceramic-foam-filter\/","title":{"rendered":"Filtre en mousse d'aluminium et de c\u00e9ramique"},"content":{"rendered":"<p>Afin de fabriquer des produits en aluminium pr\u00e9sentant des caract\u00e9ristiques acceptables, tels que les canettes de boisson et les pi\u00e8ces de fuselage d'avion, l'aluminium doit \u00eatre pratiquement exempt d'inclusions et de d\u00e9fauts. Lorsque l'aluminium fond au d\u00e9but du processus de coul\u00e9e, il se charge d'oxydes, de borures, de sels et d'autres impuret\u00e9s, qui peuvent finir par appara\u00eetre sous forme d'inclusions nuisibles dans le produit final. Il est souhaitable d'\u00e9liminer ces inclusions avant la solidification de l'aluminium. Pour ce faire, on fait g\u00e9n\u00e9ralement passer l'aluminium fondu \u00e0 travers un filtre en mousse c\u00e9ramique.<\/p>\n<p>La technique couramment utilis\u00e9e pour fabriquer des filtres en mousse c\u00e9ramique est appel\u00e9e \u201c reproduction par \u00e9ponge \u201d. Dans ce proc\u00e9d\u00e9, la mousse de polyur\u00e9thane est enduite d\u2019une suspension c\u00e9ramique, puis s\u00e9ch\u00e9e pour former un filtre \u00ab vert \u00bb, avant d\u2019\u00eatre cuite. Au cours de la cuisson, la mousse de polyur\u00e9thane interne s'\u00e9vapore et les liaisons c\u00e9ramiques restantes forment un r\u00e9seau continu de piliers c\u00e9ramiques, cr\u00e9ant ainsi une structure en mousse de type exosquelette capable de reproduire fid\u00e8lement la mousse de polyur\u00e9thane d'origine.<\/p>\n<p>Le <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-material\/\">mat\u00e9riau en mousse c\u00e9ramique<\/a> pr\u00e9sente une structure \u00e0 cellules ouvertes caract\u00e9ris\u00e9e par une r\u00e9partition de vides interconnect\u00e9s, entour\u00e9s d'un r\u00e9seau de mat\u00e9riau c\u00e9ramique. Cette structure est couramment utilis\u00e9e pour la filtration des m\u00e9taux en fusion et est appel\u00e9e \u00ab mousse c\u00e9ramique \u00bb dans l'industrie.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8215\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/03\/Alumina-Ceramic-Foam.jpg\" alt=\"Mousse c\u00e9ramique d&#039;alumine\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Alumina-Ceramic-Foam.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Alumina-Ceramic-Foam-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Le filtre en mousse c\u00e9ramique est capable de r\u00e9sister \u00e0 la corrosion chimique provoqu\u00e9e par l'alliage d'aluminium fondu dans des conditions d'utilisation normales.<\/p>\n<p>Le filtre en mousse c\u00e9ramique d'aluminium fondu est l\u00e9ger et pr\u00e9sente de pr\u00e9f\u00e9rence une densit\u00e9 comprise entre environ 0,25 et 0,40 g\/cm\u00b3.<\/p>\n<p>La porosit\u00e9 principale du filtre est d\u00e9termin\u00e9e par la structure macroscopique de la mousse, car le filtre est form\u00e9 comme un exosquelette du pr\u00e9curseur de polyur\u00e9thane, ce qui permet d\u2019obtenir une mousse reproduite par enduction d\u2019une suspension, puis par s\u00e9chage et cuisson. La taille des pores primaires de la mousse et du filtre final est de pr\u00e9f\u00e9rence comprise entre au moins 3 PPI et au plus 100 PPI, et de pr\u00e9f\u00e9rence encore entre au moins 20 PPI et au plus 70 PPI. Dans une exploitation commerciale standard, un filtre mesurant 58,4 \u00d7 58,4 \u00d7 5,1 cm (23 \u00d7 23 \u00d7 2 pouces) devrait pouvoir traiter 100 tonnes de m\u00e9tal en une seule coul\u00e9e.<\/p>","protected":false},"excerpt":{"rendered":"<p>In order to manufacture aluminum products with acceptable characteristics, such as beverage cans and aircraft fuselage parts, aluminum must be substantially free of inclusions and&hellip;<\/p>","protected":false},"author":1,"featured_media":8338,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-8337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Ceramic Foam Filter -sales@alalloycasting.com<\/title>\n<meta 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