{"id":4248,"date":"2020-08-27T09:55:18","date_gmt":"2020-08-27T09:55:18","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4248"},"modified":"2020-08-27T09:55:18","modified_gmt":"2020-08-27T09:55:18","slug":"electrolytic-aluminum-liquid-pretreatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/electrolytic-aluminum-liquid-pretreatment\/","title":{"rendered":"Pr\u00e9traitement de l'aluminium liquide par \u00e9lectrolyse"},"content":{"rendered":"<p>Le proc\u00e9d\u00e9 de pr\u00e9traitement de l'aluminium liquide par voie \u00e9lectrolytique comprend la fusion de l'alliage d'aluminium, le contr\u00f4le de la temp\u00e9rature, la purification de la masse fondue et l'affinage du grain.<\/p>\n<h2>Proc\u00e9d\u00e9 de pr\u00e9traitement de l'aluminium liquide par \u00e9lectrolyse<\/h2>\n<p><strong>Fusion d'alliages d'aluminium<\/strong><\/p>\n<p>Contr\u00f4le des ingr\u00e9dients et de la composition lors de la production : pour la gamme 20%-30% de mat\u00e9riaux solides \u00e0 froid (y compris les lingots d\u2019aluminium destin\u00e9s \u00e0 la refonte ou les d\u00e9chets primaires, ainsi que les alliages-ma\u00eetres de cet alliage), on proc\u00e8de g\u00e9n\u00e9ralement \u00e0 un dosage par lots. On ajoute tout d\u2019abord les lingots d\u2019aluminium destin\u00e9s \u00e0 la refonte ou l\u2019alliage primaire de cet alliage. Les d\u00e9chets sont ensuite ajout\u00e9s \u00e0 l\u2019alliage interm\u00e9diaire, puis l\u2019aluminium \u00e9lectrolytique liquide est inject\u00e9 en dernier lieu. La chaleur \u00e0 haute temp\u00e9rature de l\u2019aluminium \u00e9lectrolytique liquide est utilis\u00e9e pour faire fondre rapidement les mat\u00e9riaux solides ajout\u00e9s au four et r\u00e9duire la temp\u00e9rature de l\u2019aluminium \u00e9lectrolytique liquide, tout en augmentant le taux de nucl\u00e9ation du m\u00e9tal fondu.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4249\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Electrolytic-Aluminum-Liquid-Pretreatment-1.jpg\" alt=\"Pr\u00e9traitement de l&#039;aluminium liquide par \u00e9lectrolyse\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Electrolytic-Aluminum-Liquid-Pretreatment-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Electrolytic-Aluminum-Liquid-Pretreatment-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>R\u00e9gulation de la temp\u00e9rature<\/strong><\/p>\n<p>Temp\u00e9rature de fusion : la temp\u00e9rature normale de fusion est maintenue entre 740 et 780 \u2103 ; temp\u00e9rature d'affinage : les op\u00e9rations de d\u00e9gazage et de scorification sont r\u00e9alis\u00e9es \u00e0 une temp\u00e9rature comprise entre 740 et 760 \u2103.<\/p>\n<p>Temp\u00e9rature du convertisseur : la temp\u00e9rature de l'aluminium fondu dans le four de fusion doit \u00eatre maintenue dans une plage comprise entre 740 et 760 \u2103 avant que le convertisseur puisse \u00eatre mis en marche.<\/p>\n<p>Temp\u00e9rature de coul\u00e9e : g\u00e9n\u00e9ralement maintenue entre 690 et 740 \u2103.<\/p>\n<p><strong>Purification par fusion<\/strong><\/p>\n<p>La temp\u00e9rature de la solution d'aluminium \u00e9lectrolytique atteint 950 \u2103, et celle-ci contient des impuret\u00e9s m\u00e9talliques telles que le silicium, le fer, de sodium, de calcium, de phosphore, de bore, de titane, de vanadium et de zinc, ainsi que des inclusions non m\u00e9talliques telles que l\u2019oxyde d\u2019aluminium, le fluorure d\u2019aluminium, le carbone, le carbure d\u2019aluminium et le nitrure d\u2019aluminium. La teneur en gaz est \u00e9lev\u00e9e, et la teneur en hydrog\u00e8ne peut atteindre 0,6 ml (100 g Al) \u00e0 1,29 ml\/(100 g Al) lorsque la temp\u00e9rature de l\u2019aluminium liquide \u00e9lectrolytique dans la poche de coul\u00e9e est comprise entre 760 \u00b0C et 840 \u00b0C. La pr\u00e9sence de gaz dans la masse fondue ainsi que diverses inclusions m\u00e9talliques et non m\u00e9talliques peut entra\u00eener des d\u00e9fauts structurels dans le lingot, ce qui affecte \u00e0 son tour les propri\u00e9t\u00e9s structurelles des produits transform\u00e9s. Par cons\u00e9quent, l\u2019alliage d\u2019aluminium doit \u00eatre fondu lors de la production de lingots plats en alliage d\u2019aluminium \u00e0 partir de composants d\u2019aluminium liquide \u00e9lectrolytique. L\u2019entreprise adopte un processus de purification plus rigoureux afin de garantir la puret\u00e9 de la masse d\u2019aluminium fondu. Au cours de la production, gr\u00e2ce \u00e0 six cycles de <a href=\"http:\/\/www.alalloycasting.com\/fr\/molten-aluminum-purification-technology\/\">purification de l'aluminium fondu<\/a>, la d\u00e9carburation et le d\u00e9gazage, afin de garantir l'efficacit\u00e9 de la purification de la masse fondue.<\/p>\n<p><strong>Affinage du grain<\/strong><\/p>\n<p>Le fil d'aluminium-titane-bore import\u00e9 est ajout\u00e9 en ligne \u00e0 l'ext\u00e9rieur du four afin d'affiner les particules du produit ; le point d'injection de l'affineur est situ\u00e9 dans la goulotte situ\u00e9e entre la sortie du four fixe et l'entr\u00e9e de m\u00e9tal du dispositif de d\u00e9gazage rotatif. \u00c0 cet endroit, la temp\u00e9rature de la masse fondue est plus \u00e9lev\u00e9e, ce qui permet au fil de l'affineur de se dissoudre facilement et d'\u00eatre enti\u00e8rement m\u00e9lang\u00e9 dans la chambre de d\u00e9gazage, de sorte que les germes cristallins h\u00e9t\u00e9rog\u00e8nes sont r\u00e9partis de mani\u00e8re plus homog\u00e8ne dans l'ensemble de la masse fondue, et que l'effet d'affinage est optimal.<\/p>","protected":false},"excerpt":{"rendered":"<p>Electrolytic aluminum liquid pretreatment process includes aluminum alloy melting, temperature control, melt purification, and grain refinement. Electrolytic Aluminum Liquid Pretreatment Process Aluminum Alloy Melting Ingredients&hellip;<\/p>","protected":false},"author":1,"featured_media":4250,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4621],"class_list":["post-4248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-electrolytic-aluminum-liquid-pretreatment"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Electrolytic Aluminum Liquid Pretreatment Process<\/title>\n<meta name=\"description\" content=\"Electrolytic aluminum liquid pretreatment process includes melting, temperature control, melt purification, and grain refinement.\" \/>\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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