{"id":3993,"date":"2020-08-21T09:46:23","date_gmt":"2020-08-21T09:46:23","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3993"},"modified":"2020-08-21T09:46:23","modified_gmt":"2020-08-21T09:46:23","slug":"filtering-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/filtering-molten-aluminum\/","title":{"rendered":"Filtration de l'aluminium fondu"},"content":{"rendered":"<p>La filtration de l'aluminium fondu est la m\u00e9thode la plus efficace pour \u00e9liminer les scories non m\u00e9talliques pr\u00e9sentes dans l'aluminium fondu. Dans la coul\u00e9e d'alliages d'aluminium, on utilise des filtres en tissu de verre multicouches ou <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a> est g\u00e9n\u00e9ralement utilis\u00e9e. Quelle que soit la m\u00e9thode de filtration adopt\u00e9e, afin de garantir une filtration normale de l'aluminium fondu, il convient d'\u00e9liminer l'\u00e9cume de surface avant la filtration, car celle-ci risque d'obstruer facilement les mailles du mat\u00e9riau filtrant et de rendre la filtration impossible. Le moyen le plus simple d'\u00e9liminer l'\u00e9cume \u00e0 la surface de l'aluminium fondu consiste \u00e0 installer un d\u00e9flecteur de scories dans la goulotte, afin que l'aluminium fondu puisse se d\u00e9barrasser de l'\u00e9cume avant la filtration.<\/p>\n<p>Pour produire des barres moul\u00e9es en alliage d'aluminium de haute qualit\u00e9, outre le choix de composants adapt\u00e9s, le contr\u00f4le rigoureux de la temp\u00e9rature de fusion, de la temp\u00e9rature de coul\u00e9e, du traitement d'affinage du grain, de l'affinage de l'alliage liquide, de la filtration de l'aluminium fondu et d'autres mesures de processus, il est \u00e9galement n\u00e9cessaire de proc\u00e9der avec soin afin d'\u00e9viter la fissuration et le roulage de la couche d'oxyde.<\/p>\n<p>Pendant la coul\u00e9e, \u00e9vitez autant que possible les turbulences et les mouvements de roulement de l'aluminium fondu. N'utilisez pas d'outils pour remuer l'aluminium fondu dans la cuve et la plaque de d\u00e9rivation, afin que celui-ci s'\u00e9coule en douceur dans le moule sous la protection du film d'oxyde de surface. En effet, l'agitation de l'aluminium fondu par un outil et son \u00e9coulement rompent le film d'oxyde \u00e0 la surface de l'aluminium fondu, provoquant une nouvelle oxydation, tandis que le film d'oxyde est entra\u00een\u00e9 dans l'aluminium fondu.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3995\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1.jpg\" alt=\"Filtration de l&#039;aluminium fondu\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Des \u00e9tudes ont montr\u00e9 que le film d'oxyde poss\u00e8de une tr\u00e8s forte capacit\u00e9 d'adsorption : il contient 2% d'eau. Lorsque le film d'oxyde entre en contact avec l'aluminium fondu, l'eau qu'il contient r\u00e9agit avec celui-ci, ce qui entra\u00eene une absorption d'hydrog\u00e8ne et la formation d'inclusions de scories. Avant la coul\u00e9e, il convient de pr\u00e9chauffer et de s\u00e9cher compl\u00e8tement la goulotte de coul\u00e9e, <a href=\"http:\/\/www.alalloycasting.com\/fr\/distributing-launder\/\">tuyau de distribution<\/a> et d'autres syst\u00e8mes de coul\u00e9e afin d'emp\u00eacher que la r\u00e9action entre l'humidit\u00e9 et l'aluminium fondu n'entra\u00eene une absorption d'hydrog\u00e8ne.<\/p>\n<p>Enfin, les barres d'aluminium sont homog\u00e9n\u00e9is\u00e9es, ce qui permet de produire des barres d'aluminium de haute qualit\u00e9, constituant ainsi une base mat\u00e9rielle fiable pour la fabrication de profil\u00e9s de haute qualit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. In the casting of aluminum alloy, multi-layer glass cloth filter&hellip;<\/p>","protected":false},"author":1,"featured_media":3994,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[1714,4497],"class_list":["post-3993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-filtration","tag-filtering-molten-aluminum"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Filtering Molten Aluminum to Remove Non-metallic Slag<\/title>\n<meta name=\"description\" content=\"Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. Ceramic foam filter is generally 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\/filtering-molten-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filtering Molten Aluminum to Remove Non-metallic Slag\" \/>\n<meta property=\"og:description\" content=\"Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. 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