{"id":4098,"date":"2020-08-24T07:42:43","date_gmt":"2020-08-24T07:42:43","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4098"},"modified":"2020-08-24T07:42:43","modified_gmt":"2020-08-24T07:42:43","slug":"melting-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/melting-degassing\/","title":{"rendered":"Fusion et d\u00e9gazage"},"content":{"rendered":"<p>Afin d'am\u00e9liorer la qualit\u00e9 du bain de fusion, il est n\u00e9cessaire de comprendre le m\u00e9canisme de purification du m\u00e9tal en fusion. Le processus de d\u00e9gazage par fusion dans la purification du m\u00e9tal en fusion est compl\u00e9mentaire. Au cours du d\u00e9gazage, on proc\u00e8de \u00e9galement \u00e0 l'\u00e9limination des scories, ce qui favorise le d\u00e9gazage. \u00c0 l'heure actuelle, le d\u00e9gazage par fusion dans la transformation de l'aluminium est essentiellement r\u00e9alis\u00e9 par la m\u00e9thode de flottation, et les scories sont \u00e9limin\u00e9es par <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-filter-plate\/\">plaque filtrante en c\u00e9ramique<\/a>.<\/p>\n<p>Parmi les m\u00e9thodes de purification de l'aluminium fondu, principalement utilis\u00e9es pour \u00e9liminer les impuret\u00e9s, la filtration est g\u00e9n\u00e9ralement effectu\u00e9e apr\u00e8s le d\u00e9gazage et avant la coul\u00e9e (par exemple en pla\u00e7ant le tamis filtrant au niveau de la buse ou du canal de coul\u00e9e, etc.), et le m\u00e9canisme d'\u00e9limination des impuret\u00e9s est essentiellement m\u00e9canique. La fonction physique n'a pas d'effet significatif sur l'\u00e9limination des inclusions fines en suspension dans la masse fondue, et il est difficile de mettre en \u0153uvre le principe consistant \u00e0 \u00e9liminer d'abord les impuret\u00e9s, puis \u00e0 proc\u00e9der au d\u00e9gazage.<\/p>\n<p>La m\u00e9thode au flux pr\u00e9sente une bonne efficacit\u00e9 pour l'\u00e9limination des impuret\u00e9s, mais cette efficacit\u00e9 d\u00e9pend dans une large mesure des caract\u00e9ristiques du flux lui-m\u00eame et des conditions du processus de purification. Les m\u00e9thodes de traitement traditionnelles sont la m\u00e9thode par pressage ou la m\u00e9thode par recouvrement. Elles sont susceptibles de cr\u00e9er des \u201c angles morts \u201d en raison de conditions de purification insuffisantes, et il est difficile d\u2019y faire jouer pleinement le r\u00f4le du flux. Bien que la m\u00e9thode du flux par pulv\u00e9risation ait \u00e9t\u00e9 mise au point, celle-ci a certes consid\u00e9rablement am\u00e9lior\u00e9 les conditions de purification, mais elle n\u00e9cessite un \u00e9quipement sp\u00e9cialis\u00e9, entra\u00eene une augmentation des co\u00fbts et pr\u00e9sente un contr\u00f4le instable du processus dans la production r\u00e9elle.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4099\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Melting-Degassing.jpg\" alt=\"Fusion et d\u00e9gazage\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Melting-Degassing.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Melting-Degassing-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Il est donc tr\u00e8s important d'utiliser des flux peu co\u00fbteux et facilement disponibles pour purifier efficacement l'aluminium fondu et simplifier le processus. Apr\u00e8s des ann\u00e9es de recherche et de mise en pratique, nous avons mis au point une nouvelle m\u00e9thode de purification, \u00e0 savoir la m\u00e9thode de purification par filtration \u00e0 flux actif \u00e0 haut rendement. Celle-ci combine les fonctions de fusion, d\u2019\u00e9limination du flux et de filtration du flux, et permet de r\u00e9aliser l\u2019ensemble du processus de fusion sans \u00e9quipement sp\u00e9cifique. Le proc\u00e9d\u00e9 est simple, son utilisation est pratique et son co\u00fbt est faible.<\/p>\n<p>L'effet de purification est remarquable. Le taux d'\u00e9limination des impuret\u00e9s est d'environ 80%, et le taux de microperforations est consid\u00e9rablement r\u00e9duit. Si l'on ajoute un d\u00e9gazage, l'effet sera encore plus significatif. Cette technique a \u00e9t\u00e9 appliqu\u00e9e dans une s\u00e9rie de recherches portant notamment sur la technologie de recyclage des d\u00e9chets d'aluminium, la localisation de mat\u00e9riaux haute performance (mat\u00e9riaux pour la fabrication de bo\u00eetes de conserve) et de mat\u00e9riaux de qualit\u00e9 inf\u00e9rieure. Il s'agit d'une m\u00e9thode de purification avanc\u00e9e et efficace pour l'aluminium liquide, et le flux d'\u00e9limination des impuret\u00e9s \u00e0 haut rendement mis au point pr\u00e9sente un faible impact sur l'environnement. R\u00e9cemment, nous avons mis au point un flux efficace et un flux de pulv\u00e9risation destin\u00e9s \u00e0 l\u2019aluminium pur industriel.<\/p>","protected":false},"excerpt":{"rendered":"<p>In order to improve the melt quality, it is necessary to understand the purification mechanism of molten metal. The melting degassing process in molten metal&hellip;<\/p>","protected":false},"author":1,"featured_media":4099,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4513],"class_list":["post-4098","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-melting-degassing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Melting Degassing by Flux used in Aluminum Furnace<\/title>\n<meta name=\"description\" content=\"The process in molten metal purification is complementary. 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