{"id":10814,"date":"2021-10-23T07:44:27","date_gmt":"2021-10-23T07:44:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10814"},"modified":"2021-10-22T07:52:54","modified_gmt":"2021-10-22T07:52:54","slug":"purifying-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/purifying-molten-aluminum\/","title":{"rendered":"Purification de l'aluminium fondu"},"content":{"rendered":"<p>La purification de l'aluminium fondu joue un r\u00f4le important dans l'am\u00e9lioration des propri\u00e9t\u00e9s m\u00e9caniques des pi\u00e8ces moul\u00e9es. \u00c0 l'heure actuelle, le dispositif de filtration utilis\u00e9 pour purifier le m\u00e9tal fondu est principalement un filtre en mousse c\u00e9ramique, capable d'intercepter efficacement les impuret\u00e9s nocives pr\u00e9sentes dans le m\u00e9tal fondu, de transformer l'\u00e9coulement turbulent du m\u00e9tal liquide en \u00e9coulement laminaire et d'\u00e9liminer compl\u00e8tement les grosses impuret\u00e9s. Il permet \u00e9galement d'\u00e9liminer les petites inclusions du m\u00e9tal en fusion, d'am\u00e9liorer la structure cristalline, de r\u00e9duire efficacement la teneur en gaz et en \u00e9l\u00e9ments nocifs du m\u00e9tal en fusion, ainsi que de purifier et d'homog\u00e9n\u00e9iser ce dernier.<\/p>\n<p>En effet, l'aluminium fondu contient g\u00e9n\u00e9ralement des particules en suspension, qui nuisent \u00e0 la qualit\u00e9 du produit moul\u00e9 final. Ces particules proviennent g\u00e9n\u00e9ralement de trois sources. Certaines sont des particules d\u2019alumine : la couche d\u2019oxyde flottante \u00e0 la surface les aspire dans le flux de liquide ; d\u2019autres particules entra\u00een\u00e9es sont des fragments du rev\u00eatement du four, de la goulotte de transport et d\u2019autres parties de l\u2019\u00e9quipement de traitement de l\u2019aluminium fondu, qui sont \u00e9rod\u00e9s et entra\u00een\u00e9s. Dans le flux d\u2019aluminium en mouvement, certaines particules sont des pr\u00e9cipit\u00e9s d\u2019impuret\u00e9s insolubles, tels que des compos\u00e9s interm\u00e9talliques, des borures, des carbures ou d\u2019autres compos\u00e9s de l\u2019aluminium. Lorsque ces impuret\u00e9s apparaissent dans le produit moul\u00e9 final apr\u00e8s la solidification de l\u2019aluminium fondu, elles peuvent entra\u00eener une diminution de la ductilit\u00e9 de ce produit final ou nuire \u00e0 ses caract\u00e9ristiques d\u2019usinage. Il est donc souhaitable d\u2019\u00e9liminer les solides entra\u00een\u00e9s du flux d\u2019aluminium fondu avant de le couler pour obtenir un produit solide.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10816\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>En r\u00e8gle g\u00e9n\u00e9rale, avant la coul\u00e9e, on utilise une m\u00e9thode de purification de l'aluminium fondu \u00e0 l'aide d'un filtre en mousse c\u00e9ramique afin d'\u00e9liminer les particules solides en suspension dans l'alliage d'aluminium fondu.<\/p>\n<p>Le <a href=\"http:\/\/www.alalloycasting.com\/fr\/best-ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a>\u00a0Il pr\u00e9sente de bonnes performances \u00e0 haute temp\u00e9rature et permet de filtrer l'aluminium liquide sans alt\u00e9rer l'alliage ; dot\u00e9 d'une bonne porosit\u00e9 traversante, il offre ainsi de bonnes capacit\u00e9s de filtration et d'adsorption. Il permet de r\u00e9duire la teneur en inclusions d'oxyde et en inclusions de fondant dans la solution m\u00e9tallique. Il offre de bons effets de filtration et de purification, ainsi qu'une excellente r\u00e9sistance aux hautes temp\u00e9ratures, aux chocs thermiques et aux agents chimiques. Par ailleurs, le filtre en mousse c\u00e9ramique b\u00e9n\u00e9ficie d'un proc\u00e9d\u00e9 de fabrication simple et permet de fabriquer des produits filtrants de plus grande taille.<\/p>","protected":false},"excerpt":{"rendered":"<p>The purifying molten aluminum plays an important role in improving the mechanical properties of castings. At present, the filtering device used to purify the molten&hellip;<\/p>","protected":false},"author":1,"featured_media":10815,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10814","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>Purifying Molten Aluminum with Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"The purifying molten aluminum plays an important role in improving the mechanical properties of castings. The CFF filtering is widely used.\" \/>\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\/purifying-molten-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Purifying Molten Aluminum with Ceramic Foam Filter\" \/>\n<meta property=\"og:description\" content=\"The purifying molten aluminum plays an important role in improving the mechanical properties of castings. 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