{"id":6086,"date":"2020-10-27T09:26:25","date_gmt":"2020-10-27T09:26:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6086"},"modified":"2020-10-27T09:26:25","modified_gmt":"2020-10-27T09:26:25","slug":"purification-of-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/purification-of-molten-aluminum\/","title":{"rendered":"Purification de l'aluminium fondu"},"content":{"rendered":"<p>Les pi\u00e8ces moul\u00e9es en alliage d'aluminium destin\u00e9es au secteur a\u00e9rospatial doivent r\u00e9pondre \u00e0 des exigences \u00e9lev\u00e9es. La plupart des entreprises ont encore recours \u00e0 un proc\u00e9d\u00e9 de d\u00e9gazage par rotation sous gaz inerte et de filtration pour purifier l'aluminium fondu.<\/p>\n<p>Les petites entreprises de moulage sous pression d'alliages d'aluminium, en raison d'exigences de moulage peu \u00e9lev\u00e9es et d'\u00e9quipements technologiquement obsol\u00e8tes, recourent essentiellement \u00e0 la fusion en four \u00e0 c\u00f4t\u00e9 de la machine et effectuent un traitement simple d'\u00e9limination des scories pour produire leurs pi\u00e8ces moul\u00e9es. Il est pr\u00e9f\u00e9rable d\u2019utiliser un gaz inerte ou un agent d\u2019affinage non toxique pour effectuer un traitement d\u2019affinage simple, ou de filtrer l\u2019aluminium fondu \u00e0 l\u2019aide d\u2019une plaque filtrante, puis de lancer la production sans tester l\u2019efficacit\u00e9 du traitement sur l\u2019aluminium fondu. Ce type de traitement se traduit par une mauvaise qualit\u00e9 de l\u2019aluminium fondu, un faible rendement de production, des co\u00fbts relativement \u00e9lev\u00e9s et des difficult\u00e9s de d\u00e9veloppement pour l\u2019entreprise.<\/p>\n<p>Certaines entreprises de moulage sous pression d'alliages d'aluminium, de grande et moyenne taille, ont principalement recours \u00e0 une fusion centralis\u00e9e, \u00e0 une d\u00e9cantation dans le four, puis \u00e0 l'organisation de la production apr\u00e8s d\u00e9gazage et d\u00e9cantation. L'aluminium fondu subit un d\u00e9gazage en ligne sous gaz inerte et une filtration sur mousse c\u00e9ramique avant la fabrication des pi\u00e8ces moul\u00e9es.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6087\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1.jpg\" alt=\"Purification de l&#039;aluminium fondu\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Technologie de pointe pour le traitement de purification des liquides \u00e0 base d'aluminium : \u00e9quipement de d\u00e9gazage en continu, le traitement de purification s\u00e9lectionne <a href=\"http:\/\/www.alalloycasting.com\/fr\/rotating-degassing-aluminum\/\">d\u00e9gazage par rotation \u00e0 l'azote<\/a> et <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter-pal\/\">filtre en mousse c\u00e9ramique<\/a> filtration sur plaques, et l'aluminium liquide trait\u00e9 pr\u00e9sente une densit\u00e9 \u00e9quivalente inf\u00e9rieure \u00e0 1. Ce type d'\u00e9quipements de traitement de pointe est davantage utilis\u00e9 dans les nouvelles entreprises de production \u00e0 grande \u00e9chelle. Les entreprises qui optent pour la coul\u00e9e gravitaire des m\u00e9taux et produisent en s\u00e9rie des pi\u00e8ces moul\u00e9es pour l\u2019automobile et la moto utilisent g\u00e9n\u00e9ralement de l\u2019aluminium issu de fours de fusion en continu, un d\u00e9gazage en ligne sous gaz inerte et une filtration par plaques filtrantes en c\u00e9ramique pour traiter l\u2019aluminium fondu. La qualit\u00e9 de l\u2019aluminium fondu trait\u00e9 par ces m\u00e9thodes est garantie, le rendement est \u00e9lev\u00e9 et le co\u00fbt de production est relativement faible ; ces proc\u00e9d\u00e9s sont donc bien adapt\u00e9s \u00e0 la production de masse.<\/p>\n<p>Dans mon pays, on produit de plus en plus de pi\u00e8ces moul\u00e9es en alliage d'aluminium de haute qualit\u00e9, et les exigences relatives \u00e0 l'aluminium fondu ne cessent de s'accro\u00eetre. Il est donc indispensable d'am\u00e9liorer les \u00e9quipements et les techniques de purification de l'aluminium fondu.<\/p>","protected":false},"excerpt":{"rendered":"<p>The cast aluminum alloy castings in the aerospace field require high requirements. Most companies still use inert gas rotating degassing and filtering operation mode for&hellip;<\/p>","protected":false},"author":1,"featured_media":6087,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6086","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>Purification of Molten Aluminum by Rotating Degassing and Filtering<\/title>\n<meta name=\"description\" content=\"Most companies still use inert gas rotating degassing and filtering operation mode for the purification of molten aluminum.\" \/>\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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