{"id":10433,"date":"2021-09-29T08:02:37","date_gmt":"2021-09-29T08:02:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10433"},"modified":"2021-09-29T08:02:37","modified_gmt":"2021-09-29T08:02:37","slug":"aluminum-melt-processing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-melt-processing\/","title":{"rendered":"Traitement de l'aluminium fondu"},"content":{"rendered":"<p>La technologie actuelle de traitement de l'aluminium en fusion a \u00e9volu\u00e9 : autrefois, elle se limitait \u00e0 un seul processus de d\u00e9gazage ou de filtration, tandis qu'aujourd'hui, elle repose sur une technologie de traitement en continu combinant d\u00e9gazage et filtration. Afin d'am\u00e9liorer la qualit\u00e9 des mat\u00e9riaux en aluminium, les fonderies d'aluminium utilisent ces deux fonctions \u2013 d\u00e9gazage et filtration \u2013 pour traiter simultan\u00e9ment l'aluminium en fusion.<\/p>\n<p>Les inclusions non m\u00e9talliques et les gaz (principalement l'hydrog\u00e8ne) pr\u00e9sents dans la masse fondue constituent les principaux facteurs qui influencent le processus de coul\u00e9e et la qualit\u00e9 du lingot. Les alliages d'aluminium ont une forte tendance \u00e0 s'oxyder et \u00e0 s'impr\u00e9gner de gaz. Au cours du processus de fusion, ils sont en contact direct avec les gaz du four ou l'atmosph\u00e8re ext\u00e9rieure. Au cours de la fusion et du transfert de l\u2019aluminium liquide, des gaz et des inclusions se forment dans la masse fondue en raison de l\u2019absorption de gaz et de l\u2019oxydation. La puret\u00e9 de l\u2019aluminium fondu s\u2019en trouve r\u00e9duite, et les inclusions ainsi que les gaz pr\u00e9sents dans le m\u00e9tal ont un impact significatif sur la r\u00e9sistance m\u00e9canique, la r\u00e9sistance \u00e0 la fatigue, la r\u00e9sistance \u00e0 la corrosion et la r\u00e9sistance \u00e0 la fissuration par corrosion sous contrainte des profil\u00e9s en alliage d\u2019aluminium. Ma\u00eetriser efficacement les inclusions oxyd\u00e9es dans le bain de fusion et am\u00e9liorer la qualit\u00e9 interne des barres et des brames coul\u00e9es sont devenus l\u2019objectif commun poursuivi par les secteurs de la m\u00e9tallurgie, de la fonderie et de la transformation des mat\u00e9riaux.<\/p>\n<p>Le traitement de purification de l'aluminium fondu consiste principalement en un d\u00e9gazage et une \u00e9limination des scories ; c'est pourquoi une s\u00e9rie de technologies de purification de pointe, telles que le d\u00e9gazage en continu et <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-filter-filtration\/\">filtration par filtre c\u00e9ramique<\/a> est utilis\u00e9 pour purifier l'aluminium fondu. Un traitement de d\u00e9gazage et de filtration en ligne permet de garantir la qualit\u00e9 de l'aluminium fondu et d'\u00e9viter les r\u00e9clamations et les litiges li\u00e9s \u00e0 une puret\u00e9 insuffisante de la part des clients intervenant en aval de la cha\u00eene de transformation.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10217\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/09\/Plate-Filter-Unit-1.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Plate-Filter-Unit-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Plate-Filter-Unit-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Le processus de purification de l'alliage d'aluminium repose sur une technologie de pointe au niveau international <a href=\"http:\/\/www.alalloycasting.com\/fr\/degassing-filtration-system\/\">syst\u00e8me de filtration avec d\u00e9gazage<\/a>. Le syst\u00e8me de d\u00e9gazage en ligne utilise la technologie du dispositif de raffinage des gaz \u00e0 double rotor. Ce dispositif pr\u00e9sente une grande efficacit\u00e9 pour \u00e9liminer les gaz, les inclusions et certains \u00e9l\u00e9ments nocifs pr\u00e9sents dans la masse d'aluminium fondu ; il permet d'obtenir un r\u00e9sultat satisfaisant en mati\u00e8re d'\u00e9limination de l'hydrog\u00e8ne et de garantir la qualit\u00e9 interne du lingot.<\/p>\n<p>La filtration est la m\u00e9thode la plus efficace et la plus fiable pour \u00e9liminer les inclusions non m\u00e9talliques pr\u00e9sentes dans la masse fondue d'alliage d'aluminium. La filtration de la masse fondue comprend la filtration sur tamis, la filtration sur plaques en c\u00e9ramique alv\u00e9ol\u00e9e et la filtration sur tubes en c\u00e9ramique microporeux. Actuellement, la filtration sur plaques en c\u00e9ramique alv\u00e9ol\u00e9e est largement utilis\u00e9e. Le syst\u00e8me de filtration CFF utilise une filtration monocouche et en deux \u00e9tapes en fonction du d\u00e9bit d\u2019aluminium fondu par unit\u00e9 de volume de la plate-forme de coul\u00e9e, et r\u00e9pond aux exigences de filtration des clients haut de gamme conform\u00e9ment aux besoins de production de ces derniers.<\/p>","protected":false},"excerpt":{"rendered":"<p>The current aluminum melt processing technology has been developed from a single degassing or filtration in the past to a continuous treatment technology combining degassing&hellip;<\/p>","protected":false},"author":1,"featured_media":10434,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10433","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 - 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