{"id":12276,"date":"2022-01-14T01:55:28","date_gmt":"2022-01-14T01:55:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12276"},"modified":"2022-01-14T01:55:28","modified_gmt":"2022-01-14T01:55:28","slug":"metal-degassing-process","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/metal-degassing-process\/","title":{"rendered":"Proc\u00e9d\u00e9 de d\u00e9gazage des m\u00e9taux"},"content":{"rendered":"<p>Le d\u00e9gazage du m\u00e9tal et l'\u00e9limination des scories constituent des \u00e9tapes importantes du traitement du m\u00e9tal en fusion, qui permettent de purifier celui-ci et d'am\u00e9liorer la qualit\u00e9 du produit.<\/p>\n<p>Le proc\u00e9d\u00e9 de d\u00e9gazage des m\u00e9taux, bien connu, consiste \u00e0 injecter un fondant dans le m\u00e9tal en fusion, accompagn\u00e9 d'un gaz inerte tel que l'azote ou l'argon. L'hydrog\u00e8ne est \u00e9limin\u00e9 de la masse fondue par d\u00e9sorption dans les bulles, tandis que les autres impuret\u00e9s non m\u00e9talliques sont entra\u00een\u00e9es vers la couche d'\u00e9cume par flottation. La dispersion du jet de gaz est assur\u00e9e par un rotor en rotation, qui g\u00e9n\u00e8re une forte turbulence dans le bain de fusion. L'\u00e9coulement turbulent provoque l'agr\u00e9gation de petites particules non m\u00e9talliques en grands agr\u00e9gats, qui sont entra\u00een\u00e9s vers la surface du bain fondu par les bulles de gaz. Cette turbulence dans le m\u00e9tal garantit \u00e9galement que le gaz inject\u00e9 se m\u00e9lange bien au bain fondu et emp\u00eache la formation de d\u00e9p\u00f4ts et d'oxydes \u00e0 l'int\u00e9rieur de la cuve.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-12277\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2022\/01\/Metal-Degassing-Process.jpg\" alt=\"Proc\u00e9d\u00e9 de d\u00e9gazage des m\u00e9taux\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/Metal-Degassing-Process.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/Metal-Degassing-Process-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Les d\u00e9chets r\u00e9cup\u00e9r\u00e9s sont fondus dans du m\u00e9tal en fusion au cours d'un processus de fusion ; le m\u00e9tal en fusion est raffin\u00e9 au cours d'un processus de raffinage ; les scories sont \u00e9limin\u00e9es du m\u00e9tal en fusion raffin\u00e9 au cours d'un processus de d\u00e9cantation des scories ; et le m\u00e9tal en fusion raffin\u00e9 est coul\u00e9 pour produire des alliages secondaires ou des alliages moul\u00e9s.<\/p>\n<p>Les mat\u00e9riaux introduits dans le four, \u00e0 savoir la ferraille, sont chauff\u00e9s et fondus pour produire du m\u00e9tal en fusion. Les mati\u00e8res organiques adh\u00e9rant \u00e0 ces mat\u00e9riaux et les oxydes g\u00e9n\u00e9r\u00e9s au cours du processus de fusion forment diverses inclusions dans le m\u00e9tal en fusion. Ces inclusions et les m\u00e9taux sont m\u00e9lang\u00e9s pour former des scories qui remontent \u00e0 la surface sous l\u2019action du processus d\u2019affinage. Le laitier est une cause majeure de d\u00e9fauts du produit et doit \u00eatre \u00e9limin\u00e9. Cependant, en raison de la forte teneur en m\u00e9tal du laitier, son \u00e9limination entra\u00eene une perte de m\u00e9tal. Il est donc n\u00e9cessaire de r\u00e9introduire autant que possible le m\u00e9tal contenu dans le laitier dans le m\u00e9tal en fusion, et de ne retirer efficacement que les inclusions par le processus d'\u00e9limination du laitier.<\/p>\n<p>Un exemple typique <a href=\"http:\/\/www.alalloycasting.com\/fr\/flux-slag-removal\/\">\u00e9limination des scories<\/a> Ce proc\u00e9d\u00e9 consiste \u00e0 injecter un fondant \u00e0 la surface du m\u00e9tal en fusion, ce qui entra\u00eene le m\u00e9lange du fondant et des scories. Le fondant r\u00e9agit avec les fines particules d'aluminium pr\u00e9sentes dans les scories. Cette r\u00e9action d\u00e9gage de la chaleur, qui r\u00e9chauffe les scories afin d'am\u00e9liorer la fluidit\u00e9 du m\u00e9tal qu'elles contiennent, ce qui permet \u00e0 ce dernier de r\u00e9int\u00e9grer le bain de fusion.<\/p>","protected":false},"excerpt":{"rendered":"<p>Metal degassing process and slag removal process are important molten metal processing processes for cleaning molten metal and improving product quality. The commonly known metal&hellip;<\/p>","protected":false},"author":1,"featured_media":12277,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13162,13163],"class_list":["post-12276","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-metal-degassing-process","tag-molten-metal-refining-process"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metal Degassing Process, Molten Metal Refining Process<\/title>\n<meta name=\"description\" content=\"Metal degassing process and slag removal process are important molten metal processing processes for cleaning molten metal.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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