{"id":7145,"date":"2020-12-22T09:30:27","date_gmt":"2020-12-22T09:30:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7145"},"modified":"2020-12-22T09:30:27","modified_gmt":"2020-12-22T09:30:27","slug":"aluminum-degasser","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-degasser\/","title":{"rendered":"D\u00e9gazeur d'aluminium"},"content":{"rendered":"<p>Le d\u00e9gazeur d'aluminium permet d'\u00e9liminer l'hydrog\u00e8ne de l'aluminium fondu. Le processus de d\u00e9gazage de l'aluminium permet \u00e9galement d'\u00e9liminer d'autres substances nocives, telles que les inclusions chimiques ou les substances alcalines. Cet \u00e9quipement de d\u00e9gazage permet de r\u00e9pondre aux exigences de performance technique plus \u00e9lev\u00e9es li\u00e9es \u00e0 la fabrication de produits en aluminium. Le d\u00e9gazeur d'aluminium est situ\u00e9 entre le four et la machine de coul\u00e9e, et sa fonction principale est d'\u00e9liminer l'hydrog\u00e8ne et d'autres r\u00e9sidus.<\/p>\n<p>L'hydrog\u00e8ne est pr\u00e9sent dans l'atmosph\u00e8re et se dissout facilement dans l'aluminium fondu. La pr\u00e9sence d'hydrog\u00e8ne dans l'aluminium fondu peut entra\u00eener l'apparition de taches blanches ou de trous, susceptibles de nuire \u00e0 la qualit\u00e9 du produit final. Par exemple, ces produits en aluminium peuvent ne pas pr\u00e9senter des propri\u00e9t\u00e9s m\u00e9caniques ou physiques acceptables et leur r\u00e9sistance \u00e0 la traction peut s'en trouver compromise. L'hydrog\u00e8ne et les inclusions peuvent \u00e9galement provoquer des fissures de fatigue dans le mat\u00e9riau.<\/p>\n<p>Les inclusions sont des corps \u00e9trangers solides, liquides ou gazeux entour\u00e9s d'aluminium. Les inclusions m\u00e9talliques et non m\u00e9talliques doivent \u00eatre \u00e9limin\u00e9es, car elles peuvent \u00e9galement nuire aux propri\u00e9t\u00e9s m\u00e9caniques du produit. Lors de l'usinage et du polissage, les inclusions peuvent \u00e9galement accro\u00eetre l'usure des outils.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6947\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Aluminum-Rotary-Degassing.jpg\" alt=\"D\u00e9gazage rotatif de l&#039;aluminium fondu\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Aluminum-Rotary-Degassing.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Aluminum-Rotary-Degassing-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Le d\u00e9gazeur d'aluminium est install\u00e9 entre le four de maintien et la machine de coul\u00e9e. De l'azote est inject\u00e9 dans l'alliage d'aluminium fondu, puis le gaz est fragment\u00e9 par un rotor en graphite en rotation \u00e0 l'int\u00e9rieur d'une cuve de d\u00e9gazage. Il en r\u00e9sulte la formation d'un grand nombre de bulles dispers\u00e9es, ce qui permet \u00e0 l'alliage d'aluminium liquide d'\u00eatre en contact total avec l'azote dans la cuve de traitement. Selon le principe de la diff\u00e9rence de pression d\u2019air et de l\u2019adsorption en surface, les bulles absorbent l\u2019hydrog\u00e8ne et les scories oxyd\u00e9es. Elles remontent ensuite \u00e0 la surface du bain fondu pour former une \u00e9cume. L\u2019alliage d\u2019aluminium fondu s\u2019\u00e9coule alors de la sortie de l\u2019unit\u00e9 de d\u00e9gazage vers la machine de coul\u00e9e. L\u2019alliage d\u2019aluminium liquide p\u00e9n\u00e8tre en continu dans le dispositif de d\u00e9gazage, et de l\u2019azote y est insuffl\u00e9 en continu. Gr\u00e2ce \u00e0 ce processus de purification, le d\u00e9gazeur permet d\u2019atteindre l\u2019objectif de purification de l\u2019alliage d\u2019aluminium.<\/p>\n<p>Les op\u00e9rateurs doivent \u00e9teindre l'\u00e9l\u00e9ment chauffant avant que l'aluminium en fusion ne p\u00e9n\u00e8tre dans le <a href=\"http:\/\/www.alalloycasting.com\/fr\/degassing-equipment\/\">\u00e9quipement de d\u00e9gazage<\/a>. Lorsque la temp\u00e9rature du four approche celle de l'aluminium fondu, un gaz inerte est inject\u00e9 dans le rotor, puis l'aluminium fondu est vers\u00e9 dans la cuve de d\u00e9gazage.<\/p>","protected":false},"excerpt":{"rendered":"<p>The aluminum degasser can remove hydrogen from molten aluminum. The aluminum degassing process can also remove other harmful substances, such as chemical inclusions or alkaline&hellip;<\/p>","protected":false},"author":1,"featured_media":7146,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-7145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Degasser used to remove hydrogen and inclusions<\/title>\n<meta name=\"description\" content=\"The aluminum degasser can remove hydrogen from molten aluminum. The aluminum degassing process can also remove other harmful substances.\" \/>\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\/aluminum-degasser\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminum Degasser used to remove hydrogen and inclusions\" \/>\n<meta property=\"og:description\" content=\"The aluminum degasser can remove hydrogen from molten aluminum. 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