{"id":6270,"date":"2020-11-06T06:52:11","date_gmt":"2020-11-06T06:52:11","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6270"},"modified":"2020-11-06T06:52:11","modified_gmt":"2020-11-06T06:52:11","slug":"melt-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/melt-purification\/","title":{"rendered":"Purification par fusion"},"content":{"rendered":"

Transformation technique visant \u00e0 am\u00e9liorer la qualit\u00e9 des mat\u00e9riaux et des \u00e9quipements utilis\u00e9s pour la purification de la masse fondue<\/strong><\/p>\n

La purification par fusion am\u00e9liore la qualit\u00e9 de l'affinage gr\u00e2ce \u00e0 un four pour alliages d'aluminium, au d\u00e9gazage en continu, \u00e0 la filtration et \u00e0 la protection contre la p\u00e9n\u00e9tration de mati\u00e8res non mouillantes.<\/p>\n

1. Remplacer le chlore utilis\u00e9 dans le four et dans le raffinage en continu.
\n2. Raffinage sans fum\u00e9e, z\u00e9ro \u00e9mission de fluor, en totale conformit\u00e9 avec les exigences en mati\u00e8re de protection de l'environnement.
\n2. R\u00e9soudre le probl\u00e8me de l'\u00e9tanch\u00e9it\u00e9 difficile dans ce secteur. Mat\u00e9riau d'\u00e9tanch\u00e9it\u00e9 double \u00e0 haute r\u00e9silience et joint \u00e0 sas int\u00e9gr\u00e9 pour isoler la pollution atmosph\u00e9rique secondaire.
\n3. En associant le mat\u00e9riau de rev\u00eatement \u00e0 faible conductivit\u00e9 (0,54 W\/m\u00b7K) au mat\u00e9riau structurel isolant, il est possible de maintenir la temp\u00e9rature moyenne de l'enveloppe \u00e0 65.
\n4. Le taux d'\u00e9limination des m\u00e9taux alcalins (sodium, calcium) est compris entre 50 et 80%.<\/p>\n

Classification et contr\u00f4le de la puret\u00e9 de l'hydrog\u00e8ne et des inclusions dans les produits en alliage d'aluminium<\/strong><\/p>\n

En fonction des besoins des utilisateurs, recourir \u00e0 des m\u00e9thodes de mesure en ligne de la teneur en hydrog\u00e8ne et en scories pour classer les donn\u00e9es de mesure.<\/p>\n

Pour les produits tels que les feuilles d'aluminium ultra-fines et les mat\u00e9riaux destin\u00e9s \u00e0 la fabrication de corps de bo\u00eetes de conserve pr\u00e9sentant une puret\u00e9 de premier ordre, la teneur en hydrog\u00e8ne ne doit pas d\u00e9passer 0,10 ml\/100 g d'Al, et la teneur en scories ne doit pas d\u00e9passer 2 K\/kg.<\/p>\n

Pour les produits destin\u00e9s \u00e0 des applications critiques, tels que l\u2019a\u00e9rospatiale, les trains \u00e0 grande vitesse, les feuilles \u00ab double z\u00e9ro \u00bb, les mat\u00e9riaux de rev\u00eatement de bo\u00eetes de conserve, les panneaux CTP, les panneaux automobiles, le transport ferroviaire et d\u2019autres produits importants n\u00e9cessitant une puret\u00e9 secondaire, la teneur en hydrog\u00e8ne doit \u00eatre inf\u00e9rieure ou \u00e9gale \u00e0 0,12 ml\/100 g d\u2019Al, et la teneur en scories doit \u00eatre inf\u00e9rieure ou \u00e9gale \u00e0 2 \u00e0 5 K\/kg.<\/p>\n

Pour les produits courants en alliage d'aluminium, tels que les panneaux d\u00e9coratifs pour murs-rideaux pr\u00e9sentant un degr\u00e9 de puret\u00e9 de niveau 3 (sauf exigences particuli\u00e8res), la teneur en hydrog\u00e8ne ne doit pas d\u00e9passer 0,2 ml\/100 g d'Al, et la teneur en scories ne doit pas d\u00e9passer 5 \u00e0 80 K\/kg.<\/p>\n

\"Purification<\/p>\n

Contr\u00f4le de la puret\u00e9 de la masse fondue d'alliage d'aluminium au cours de la production<\/strong><\/p>\n

Produits de puret\u00e9 de premier choix : il est possible d'ajouter des d\u00e9chets de premier choix, un alliage-ma\u00eetre ou des additifs pour l'aluminium \u2014 affinage au gaz (gaz Ar2 ou m\u00e9lange de gaz) pour la protection par flux lors de la refonte et la protection de l'alliage \u2014 configuration de d\u00e9gazage rotatif<\/a>\/adoption du d\u00e9gazage sous vide filtre en c\u00e9ramique alv\u00e9ol\u00e9e<\/a> type de tube.<\/p>\n

Produits de puret\u00e9 secondaire : il est possible d'ajouter des d\u00e9chets secondaires et d'utiliser des additifs m\u00e9talliques ; affinage au gaz (azote) pour la protection du flux et la protection de l'alliage ; d\u00e9gazage rotatif ou sous vide configurable ; possibilit\u00e9 d'utiliser un filtre en mousse c\u00e9ramique \u00e0 deux \u00e9tages, un tube filtrant en mousse c\u00e9ramique ou un lit profond pour la filtration.<\/p>\n

Produits de puret\u00e9 \u00e0 trois niveaux : d\u00e9chets de troisi\u00e8me niveau, d\u00e9chets d'aluminium et additifs m\u00e9talliques \u2014 raffinage au gaz (azote) \u2014 flux protecteur \u2014 ajout possible d'un filtre en mousse c\u00e9ramique.<\/p>","protected":false},"excerpt":{"rendered":"

Technical transformation to improve the quality of melt purification materials and equipment Melt purification improves the refining quality by aluminum alloy furnace, online degassing, filtering…<\/p>","protected":false},"author":1,"featured_media":6271,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nMelt Purification by Online Degassing and Filtering<\/title>\n<meta name=\"description\" content=\"The melt purification methods improve the refining quality by aluminum alloy flux, online degassing, filtering and diversion protection.\" \/>\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\/\" 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