{"id":11271,"date":"2021-11-19T02:16:39","date_gmt":"2021-11-19T02:16:39","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11271"},"modified":"2021-11-19T02:16:39","modified_gmt":"2021-11-19T02:16:39","slug":"%d0%bf%d0%b5%d0%bd%d0%be%d0%ba%d0%b5%d1%80%d0%b0%d0%bc%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8%d0%b9-%d1%84%d0%b8%d0%bb%d1%8c%d1%82%d1%80","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/%d0%bf%d0%b5%d0%bd%d0%be%d0%ba%d0%b5%d1%80%d0%b0%d0%bc%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8%d0%b9-%d1%84%d0%b8%d0%bb%d1%8c%d1%82%d1%80\/","title":{"rendered":"filtre en c\u00e9ramique expans\u00e9e"},"content":{"rendered":"<p>Le filtre en c\u00e9ramique expans\u00e9e est principalement destin\u00e9 \u00e0 la filtration de l'aluminium et des alliages d'aluminium dans les ateliers de fonderie. Dot\u00e9 d'une excellente r\u00e9sistance aux agressions et \u00e0 la corrosion caus\u00e9es par l'aluminium fondu, ce filtre permet d'\u00e9liminer efficacement les inclusions, r\u00e9duire la quantit\u00e9 de gaz pi\u00e9g\u00e9 et assurer un \u00e9coulement laminaire, ce qui permet d'obtenir un m\u00e9tal filtr\u00e9 nettement plus pur. Un m\u00e9tal plus pur se traduit par une meilleure qualit\u00e9 des pi\u00e8ces moul\u00e9es, une r\u00e9duction du taux de rebut et une diminution des d\u00e9fauts li\u00e9s aux inclusions, ce qui contribue \u00e0 augmenter le b\u00e9n\u00e9fice net.<\/p>\n<p>Les m\u00e9taux et les objets m\u00e9talliques entretiennent un lien particulier avec la civilisation humaine. Ils sont consid\u00e9r\u00e9s comme l'un des premiers mat\u00e9riaux ma\u00eetris\u00e9s par l'homme. Cependant, tous les m\u00e9taux ne sont pas tr\u00e8s stables \u00e0 l'\u00e9tat brut. Sous cette forme, ils peuvent ne pas pr\u00e9senter les propri\u00e9t\u00e9s m\u00e9talliques optimales et n\u00e9cessitent donc un traitement de purification. Le processus de purification du m\u00e9tal fondu n\u00e9cessite l'utilisation d'un filtre en c\u00e9ramique poreuse, qui assure l'\u00e9limination de toutes les impuret\u00e9s de la masse m\u00e9tallique. Une fois ce processus termin\u00e9, le m\u00e9tal est pr\u00eat \u00e0 \u00eatre utilis\u00e9 dans divers domaines d'application au moyen de diff\u00e9rents proc\u00e9d\u00e9s.<\/p>\n<p>Conform\u00e9ment aux normes sectorielles g\u00e9n\u00e9ralement admises, le filtre en c\u00e9ramique expans\u00e9e pr\u00e9sente plusieurs propri\u00e9t\u00e9s essentielles qui facilitent l'\u00e9puration du m\u00e9tal en fusion. Ces composants poreux jouent un r\u00f4le tr\u00e8s important dans l'ensemble de ce processus ; c'est pourquoi ils doivent pr\u00e9senter des propri\u00e9t\u00e9s conformes aux normes.<\/p>\n<p>Principales propri\u00e9t\u00e9s du filtre en mousse c\u00e9ramique<\/p>\n<p>Les temp\u00e9ratures de fusion naturelles des diff\u00e9rents \u00e9l\u00e9ments m\u00e9talliques sont tr\u00e8s \u00e9lev\u00e9es. La plage des temp\u00e9ratures de fusion des m\u00e9taux peut varier, mais elle s'\u00e9tend g\u00e9n\u00e9ralement de plusieurs centaines \u00e0 plus de mille degr\u00e9s Celsius. Il est donc absolument indispensable que les filtres en c\u00e9ramique expans\u00e9e poss\u00e8dent certaines propri\u00e9t\u00e9s. Voici quelques-unes de ces propri\u00e9t\u00e9s utiles :<\/p>\n<p>La porosit\u00e9 correspond au pourcentage d'espace poreux du filtre. Cette propri\u00e9t\u00e9 est tr\u00e8s importante lors de l'utilisation, car un filtre pr\u00e9sentant une porosit\u00e9 nettement sup\u00e9rieure ou inf\u00e9rieure peut compliquer le processus. Il est donc recommand\u00e9 que la porosit\u00e9 soit optimale en fonction du type de m\u00e9tal fondu utilis\u00e9.<\/p>\n<p>La quantit\u00e9 de mati\u00e8re premi\u00e8re utilis\u00e9e dans le processus de purification est tr\u00e8s importante, car il n'est pas rentable de mener ce processus \u00e0 petite \u00e9chelle. C'est pourquoi une grande quantit\u00e9 de solution m\u00e9tallique est d\u00e9vers\u00e9e sur ces filtres, qui doivent donc pr\u00e9senter une r\u00e9sistance \u00e9lev\u00e9e \u00e0 la compression afin de pouvoir fonctionner sans subir de dommages.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u041f\u0435\u043d\u043e\u043a\u0435\u0440\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0444\u0438\u043b\u044c\u0442\u0440 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0434\u043b\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u044f \u0438 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u0435\u0432\u044b\u0445 \u0441\u043f\u043b\u0430\u0432\u043e\u0432 \u0432 \u043b\u0438\u0442\u0435\u0439\u043d\u044b\u0445 \u0446\u0435\u0445\u0430\u0445 \u0438 \u043b\u0438\u0442\u0435\u0439\u043d\u044b\u0445 \u0446\u0435\u0445\u0430\u0445. \u041e\u0431\u043b\u0430\u0434\u0430\u044f \u043f\u0440\u0435\u0432\u043e\u0441\u0445\u043e\u0434\u043d\u043e\u0439 \u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c\u044e \u043a \u0430\u0433\u0440\u0435\u0441\u0441\u0438\u0432\u043d\u044b\u043c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f\u043c \u0438 \u043a\u043e\u0440\u0440\u043e\u0437\u0438\u0438&hellip;<\/p>","protected":false},"author":1,"featured_media":11272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12822,12823],"class_list":["post-11271","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-12822","tag-12823"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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