{"id":10092,"date":"2021-08-27T06:13:14","date_gmt":"2021-08-27T06:13:14","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10092"},"modified":"2021-08-26T06:29:34","modified_gmt":"2021-08-26T06:29:34","slug":"melt-purification-and-modification-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/melt-purification-and-modification-treatment\/","title":{"rendered":"Purification par fusion et traitement de modification"},"content":{"rendered":"

Les m\u00e9thodes de purification et de modification en fusion peuvent influencer consid\u00e9rablement les propri\u00e9t\u00e9s de l'alliage, notamment sa t\u00e9nacit\u00e9 et sa conductivit\u00e9 \u00e9lectrique. Il convient de mener des travaux de recherche et de d\u00e9veloppement sur diverses technologies avanc\u00e9es de purification et de modification en fusion, en s'attachant tout particuli\u00e8rement \u00e0 r\u00e9soudre le probl\u00e8me de la faible qualit\u00e9 m\u00e9tallurgique des lingots.<\/p>\n

Avec le d\u00e9veloppement de l'industrie automobile, on utilise de plus en plus de pi\u00e8ces moul\u00e9es en alliage d'aluminium, et les exigences auxquelles elles doivent r\u00e9pondre sont de plus en plus strictes. Outre les exigences relatives \u00e0 la composition chimique, aux propri\u00e9t\u00e9s m\u00e9caniques et \u00e0 la pr\u00e9cision dimensionnelle, les pi\u00e8ces moul\u00e9es en alliage d'aluminium ne doivent pr\u00e9senter aucun d\u00e9faut de coul\u00e9e, tels que des trous de retrait, des pores ou des trous de scories. La purification de l\u2019aluminium fondu est l\u2019une des mesures permettant de garantir des produits en alliage d\u2019aluminium de haute qualit\u00e9 ; c\u2019est \u00e9galement la principale m\u00e9thode pour am\u00e9liorer la qualit\u00e9 globale des alliages d\u2019aluminium. L\u2019efficacit\u00e9 de l\u2019affinage de l\u2019aluminium fondu a une influence importante sur la formation de pores, de cavit\u00e9s de retrait et d\u2019inclusions, et affecte directement les propri\u00e9t\u00e9s physiques et m\u00e9caniques des pi\u00e8ces moul\u00e9es en alliage d\u2019aluminium. Sans un aluminium fondu de haute qualit\u00e9, m\u00eame si les \u00e9tapes de traitement ult\u00e9rieures sont de pointe, des d\u00e9fauts persisteront in\u00e9vitablement dans le produit une fois qu\u2019ils se seront form\u00e9s, et il sera difficile d\u2019obtenir des pi\u00e8ces moul\u00e9es de haute qualit\u00e9. Il est donc indispensable de pr\u00eater attention aux gaz et aux inclusions pr\u00e9sents dans l\u2019aluminium fondu, et de prendre des mesures pour les \u00e9liminer.<\/p>\n

\"Filtration<\/p>\n

\u00c0 l'heure actuelle, les m\u00e9thodes de purification de la masse fondue comprennent : le maintien de la masse fondue dans le four + traitement par solvant, le traitement au gaz inerte + chlore, la pulv\u00e9risation de poudre et le traitement d'affinage. Les m\u00e9thodes de purification hors four comprennent d\u00e9gazage en ligne<\/a> traitement, CFF (Filtre en mousse c\u00e9ramique<\/a>), m\u00e9thode de filtration, etc.<\/p>\n

Le syst\u00e8me de purification en ligne de la fonte d\u2019aluminium de notre entreprise repose sur un concept ing\u00e9nieux et une structure unique, et offre une efficacit\u00e9 accrue en mati\u00e8re d\u2019\u00e9limination de l\u2019hydrog\u00e8ne et des scories. Le taux d\u2019\u00e9limination de l\u2019hydrog\u00e8ne peut atteindre plus de 70%, et 99% des inclusions dont la taille des particules est sup\u00e9rieure \u00e0 20 \u00b5m peuvent \u00eatre \u00e9limin\u00e9es. Il s'agit de la technologie de raffinage de l'aluminium fondu la plus avanc\u00e9e, capable de fournir des lingots de haute qualit\u00e9 \u00e0 grande \u00e9chelle destin\u00e9s \u00e0 la production de t\u00f4les \u00e9paisses en alliage d'aluminium haute performance.<\/p>\n

Par ailleurs, les m\u00e9thodes d'ajout d'oligo-\u00e9l\u00e9ments et de modificateurs de Sr, ainsi que leur interaction avec d'autres \u00e9l\u00e9ments dans les alliages d'aluminium, m\u00e9ritent \u00e9galement une attention particuli\u00e8re. En effet, elles influencent la formation de compos\u00e9s primaires \u00e0 gros grains dans le lingot, ce qui influe \u00e0 son tour sur leur morphologie et leur r\u00e9partition dans la structure, et a un impact consid\u00e9rable sur les propri\u00e9t\u00e9s de l'alliage.<\/p>","protected":false},"excerpt":{"rendered":"

Melt purification and modification treatment methods can significantly affect the properties of the alloy, especially the toughness and electrical conductivity. Research and develop various advanced…<\/p>","protected":false},"author":1,"featured_media":10093,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12509,12397],"class_list":["post-10092","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-melt-purification-and-modification-treatment","tag-online-purification"],"yoast_head":"\nMelt Purification and Modification Treatment, Online Purification<\/title>\n<meta name=\"description\" content=\"Melt purification and modification treatment can significantly affect the properties of the alloy, especially the toughness and conductivity.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/fr\/melt-purification-and-modification-treatment\/\" \/>\n<meta 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