{"id":9990,"date":"2021-08-20T06:16:46","date_gmt":"2021-08-20T06:16:46","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9990"},"modified":"2021-08-20T06:16:46","modified_gmt":"2021-08-20T06:16:46","slug":"aluminum-fluxes-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-fluxes-refining\/","title":{"rendered":"Affinage des flux d'aluminium"},"content":{"rendered":"

La m\u00e9thode d'affinage par flux d'aluminium permet d'\u00e9liminer efficacement les inclusions non m\u00e9talliques. Le degr\u00e9 de purification obtenu par le flux pour \u00e9liminer les inclusions non m\u00e9talliques de la masse fondue d\u00e9pend non seulement des propri\u00e9t\u00e9s physiques et chimiques du flux, mais aussi, dans une large mesure, des conditions du processus d'affinage, telles que la quantit\u00e9 de flux, le temps de contact entre le flux et la masse fondue, la surface de contact, les conditions de m\u00e9lange, la temp\u00e9rature, etc.<\/p>\n

Pour l'affinage des masses fondues d'alliages d'aluminium, des centaines de fondants ont \u00e9t\u00e9 mis au point, parmi lesquels les fondants \u00e0 base de chlorures de sodium et de potassium sont les plus couramment utilis\u00e9s. Pour les alliages d'aluminium \u00e0 faible teneur en magn\u00e9sium, les fondants \u00e0 base de chlorures de sodium et de potassium agents de raffinage<\/a> sont largement utilis\u00e9s. Pour les alliages d'aluminium \u00e0 forte teneur en magn\u00e9sium, afin d'\u00e9viter la fragilisation due au sodium, on utilise des fondants d'affinage \u00e0 base de carnallite, sans sodium.<\/p>\n

Lors de la fusion de d\u00e9chets d'alliages d'aluminium, la qualit\u00e9 des d\u00e9chets varie, tout comme la quantit\u00e9 d'agent de recouvrement et d'agent d'affinage utilis\u00e9e. La quantit\u00e9 d'agent d'affinage varie \u00e9galement en fonction des diff\u00e9rents alliages d'aluminium et des diff\u00e9rents produits.<\/p>\n

\"\"<\/p>\n

Les m\u00e9thodes suivantes sont couramment utilis\u00e9es dans la production d'alliages d'aluminium par fusion et affinage \u00e0 l'aide de fondants d'aluminium :<\/p>\n

La masse fondue est affin\u00e9e dans la poche de coul\u00e9e. Il faut d'abord placer un sachet de flux dans la poche, puis y injecter la masse fondue et bien m\u00e9langer le tout afin d'augmenter la surface de contact entre les deux.
\nLa masse fondue est affin\u00e9e dans un four \u00e0 induction. Le fondant est introduit dans le four \u00e0 induction, puis le fondant et la masse fondue sont parfaitement m\u00e9lang\u00e9s gr\u00e2ce \u00e0 l'effet d'agitation du champ magn\u00e9tique d'induction, ce qui permet d'obtenir l'affinage souhait\u00e9.
\nOn proc\u00e8de \u00e0 l'affinage \u00e0 l'aide d'un m\u00e9langeur dans la poche de coul\u00e9e ou dans le four afin de disperser m\u00e9caniquement le fondant dans la masse fondue.
\nLa masse fondue est affin\u00e9e dans un dispositif d'agitation \u00e0 champ magn\u00e9tique. Cette m\u00e9thode repose sur la force \u00e9lectromagn\u00e9tique pour amener en continu la masse fondue \u00e0 l'interface flux-m\u00e9tal, afin d'assurer un contact actif entre l'aluminium fondu et le flux. Plus la vitesse de rotation de la masse fondue est \u00e9lev\u00e9e, meilleur est l'effet d'affinage.
\nAffinage par flux \u00e9lectrique. Dans cette m\u00e9thode, la masse fondue traverse une couche de flux soumise \u00e0 un champ \u00e9lectrique (\u00e0 l'interface m\u00e9tal-flux) afin d'assurer un affinage en continu.<\/p>","protected":false},"excerpt":{"rendered":"

The aluminum fluxes refining method has a good effect on discharging non-metallic inclusions. The degree of purification by the flux to remove non-metallic inclusions in…<\/p>","protected":false},"author":1,"featured_media":9991,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12389,688],"class_list":["post-9990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-fluxes-refining","tag-molten-aluminum-purification"],"yoast_head":"\nAluminum Fluxes Refining, Molten Aluminum Purification<\/title>\n<meta name=\"description\" content=\"The aluminum fluxes refining method has a good effect on discharging non-metallic inclusions. 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