{"id":9515,"date":"2021-07-10T06:19:46","date_gmt":"2021-07-10T06:19:46","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9515"},"modified":"2021-07-09T06:23:21","modified_gmt":"2021-07-09T06:23:21","slug":"aluminum-melt-purification-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-melt-purification-method\/","title":{"rendered":"M\u00e9thode de purification de l'aluminium fondu"},"content":{"rendered":"<p>Le proc\u00e9d\u00e9 de purification de la fonte d\u2019aluminium repose sur la m\u00e9thode de flottation \u00e0 bulles pour les trois \u00e9tapes d\u2019affinage : on injecte de l\u2019azote (N\u2082) et un agent d\u2019affinage \u00e0 haute temp\u00e9rature dans la fonte. La purification en ligne, effectu\u00e9e \u00e0 l\u2019ext\u00e9rieur du four, utilise un m\u00e9lange de CCl\u2084 et de N\u2082 pulv\u00e9ris\u00e9 \u00e0 travers un rotor en graphite en rotation, et les scories sont \u00e9vacu\u00e9es en temps voulu afin de garantir la qualit\u00e9 de la fonte. Apr\u00e8s une s\u00e9rie de <a href=\"http:\/\/www.alalloycasting.com\/fr\/molten-aluminum-purification-method\/\">m\u00e9thode de purification de l'aluminium<\/a> Gr\u00e2ce \u00e0 ces traitements, la teneur en hydrog\u00e8ne dans la masse fondue peut \u00eatre contr\u00f4l\u00e9e avec une pr\u00e9cision de 0,12 ml\/100 g d'Al.<\/p>\n<p>AdTech est une entreprise \u00e0 vocation internationale qui se positionne comme un pionnier de longue date dans son secteur. Elle se consacre \u00e0 la R&amp;D et \u00e0 la fabrication d\u2019\u00e9quipements de d\u00e9gazage et de filtration en ligne, de filtres en mousse c\u00e9ramique, de mat\u00e9riaux de coul\u00e9e \u00ab hot-top \u00bb, de plaques de buses, de mat\u00e9riaux de rev\u00eatement de r\u00e9paration et de flux. Notre unit\u00e9 de d\u00e9gazage en ligne repose sur une technologie japonaise et pr\u00e9sente une conception structurelle rationnelle. L'efficacit\u00e9 du nettoyage \u00e0 l'hydrog\u00e8ne est stable sur les mod\u00e8les 60% et 80%.<\/p>\n<p>La teneur en hydrog\u00e8ne de la masse d'aluminium fondu destin\u00e9e \u00e0 la fabrication de t\u00f4les coul\u00e9es-lamin\u00e9es est g\u00e9n\u00e9ralement sp\u00e9cifi\u00e9e \u00e0 une valeur ne d\u00e9passant pas 0,15 ml\/100 g. En raison de facteurs tels que les mati\u00e8res premi\u00e8res, l'humidit\u00e9 ou des outils non pr\u00e9chauff\u00e9s, une quantit\u00e9 excessive de gaz reste en solution dans l'aluminium fondu, ce qui provoque des d\u00e9fauts tels que des micropores, des bulles d'air et des canaux d'air dans la t\u00f4le coul\u00e9e-lamin\u00e9e.<\/p>\n<p>Les principales causes de cette teneur excessive en hydrog\u00e8ne sont les suivantes :<\/p>\n<p>(1) Il y a de l'humidit\u00e9 \u00e0 la surface du mat\u00e9riau froid renvoy\u00e9 vers le four ;<br \/>\n(2) La temp\u00e9rature de fusion est trop \u00e9lev\u00e9e, et l'aluminium fondu absorbe facilement l'humidit\u00e9 pr\u00e9sente dans l'air ;<br \/>\n(3) L'humidit\u00e9 produite lors du chauffage au gaz de p\u00e9trole liqu\u00e9fi\u00e9 ;<br \/>\n(4) L'azote introduit dans la chambre de d\u00e9gazage contient de l'humidit\u00e9.<\/p>\n<p>Pour ces raisons, pendant l'op\u00e9ration, il convient de veiller \u00e0 contr\u00f4ler la temp\u00e9rature de l'aluminium fondu, d'assurer un d\u00e9gazage efficace de celui-ci et d'\u00e9viter autant que possible le chauffage au gaz liqu\u00e9fi\u00e9. Parall\u00e8lement, il faut contr\u00f4ler rigoureusement le processus de production d'azote afin que sa puret\u00e9 r\u00e9ponde aux exigences.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aluminum melt purification method adopts the bubble floatation method for three refinings, blowing N2+ high-temperature refining agent into the melt, and on-line purification outside the&hellip;<\/p>","protected":false},"author":1,"featured_media":9516,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9515","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>Aluminum Melt Purification Method, Molten Aluminum Refining<\/title>\n<meta name=\"description\" content=\"Aluminum melt purification 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