{"id":6441,"date":"2020-11-13T09:01:51","date_gmt":"2020-11-13T09:01:51","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6441"},"modified":"2020-11-13T09:01:51","modified_gmt":"2020-11-13T09:01:51","slug":"detection-of-slag-content","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/detection-of-slag-content\/","title":{"rendered":"D\u00e9termination de la teneur en scories"},"content":{"rendered":"

Ces derni\u00e8res ann\u00e9es, les chercheurs scientifiques et les techniciens en ing\u00e9nierie n\u2019ont cess\u00e9 d\u2019am\u00e9liorer et de perfectionner le processus de purification de la masse fondue d\u2019alliage d\u2019aluminium ainsi que les \u00e9quipements correspondants, ce qui a permis de r\u00e9duire progressivement la teneur en inclusions de la masse fondue d\u2019aluminium ; toutefois, ils ne disposent pas encore d\u2019une m\u00e9thode efficace. Des m\u00e9thodes de d\u00e9tection des inclusions adapt\u00e9es permettent de d\u00e9terminer avec pr\u00e9cision la teneur en scories du bain de fusion et d'\u00e9valuer de mani\u00e8re exhaustive les avantages et les inconv\u00e9nients des diff\u00e9rentes proc\u00e9d\u00e9s de purification<\/a>. La d\u00e9termination de la teneur en inclusions de l'aluminium fondu, ainsi que la mani\u00e8re de d\u00e9terminer la concentration de ces inclusions de fa\u00e7on simple, directe, rapide et pr\u00e9cise avant la coul\u00e9e, ont toujours constitu\u00e9 l'un des axes de recherche prioritaires des chercheurs nationaux et internationaux. Les essais consistent principalement \u00e0 identifier les composants chimiques des inclusions, \u00e0 observer leur forme, leur taille et leur r\u00e9partition, ainsi qu\u2019\u00e0 d\u00e9terminer leur teneur. En raison de la faible teneur en inclusions dans la masse fondue, de la s\u00e9gr\u00e9gation locale, de la composition h\u00e9t\u00e9rog\u00e8ne de l\u2019aluminium fondu et d\u2019autres facteurs, les r\u00e9sultats des essais pr\u00e9sentent une faible stabilit\u00e9, une forte dispersion et une repr\u00e9sentativit\u00e9 insuffisante de l\u2019\u00e9chantillon. Il est difficile d\u2019\u00e9valuer l\u2019\u00e9tat des inclusions dans l\u2019ensemble de la masse fondue ; on ne peut donc proc\u00e9der qu\u2019\u00e0 une analyse qualitative relative.<\/p>\n

\u00c0 l'heure actuelle, il existe de nombreuses m\u00e9thodes de d\u00e9tection de la teneur en scories dans l'aluminium fondu, tant en France qu'\u00e0 l'\u00e9tranger, qui se divisent principalement en deux cat\u00e9gories : la d\u00e9tection hors ligne et la d\u00e9tection en ligne. Les principales m\u00e9thodes de d\u00e9tection hors ligne comprennent : la m\u00e9thode m\u00e9tallographique, la m\u00e9thode par filtration, la m\u00e9thode d\u2019analyse chimique, la m\u00e9thode de fusion par faisceau d\u2019\u00e9lectrons, la m\u00e9thode de chauffage par centrifugation, la m\u00e9thode par ultrasons, etc. Les m\u00e9thodes de d\u00e9tection en ligne comprennent principalement : la m\u00e9thode LiMCA, la m\u00e9thode LiMCAlI, etc. \u00c0 l\u2019heure actuelle, de nombreuses recherches sont men\u00e9es en Chine sur les m\u00e9thodes de d\u00e9tection hors ligne, mais ces m\u00e9thodes sont r\u00e9alis\u00e9es hors ligne, c\u2019est-\u00e0-dire que des \u00e9chantillons doivent \u00eatre pr\u00e9lev\u00e9s sur le site de production, puis trait\u00e9s et analys\u00e9s en laboratoire, avant que les r\u00e9sultats ne soient renvoy\u00e9s \u00e0 la production, ce qui rend leur utilisation difficile sur site. La d\u00e9tection en ligne ne permet pas de refl\u00e9ter avec pr\u00e9cision la situation r\u00e9elle des inclusions dans l\u2019aluminium fondu. De nombreuses \u00e9tudes portent sur les m\u00e9thodes de d\u00e9tection en ligne \u00e0 l\u2019\u00e9tranger, mais les produits correspondants sont plus chers et plus on\u00e9reux.<\/p>","protected":false},"excerpt":{"rendered":"

In recent years, scientific researchers and engineering technicians have continuously improved and perfected the purification process of aluminum alloy melt and the corresponding equipment, so…<\/p>","protected":false},"author":1,"featured_media":6476,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6441","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nDetection of Slag Content in Molten Aluminum Casting<\/title>\n<meta name=\"description\" content=\"There are many kinds of detection methods for slag content in molten aluminum, mainly divided into offline detection and online detection.\" \/>\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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