{"id":9736,"date":"2021-07-30T03:52:32","date_gmt":"2021-07-30T03:52:32","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9736"},"modified":"2021-07-30T03:52:42","modified_gmt":"2021-07-30T03:52:42","slug":"aluminum-online-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-online-degassing\/","title":{"rendered":"D\u00e9gazage de l'aluminium en ligne"},"content":{"rendered":"<p>L'aluminium fondu dispose d'un temps suffisant au cours du processus de d\u00e9gazage en ligne de l'aluminium, \u00e0 condition que la teneur en gaz de l'aluminium fondu entrant dans l'affineur soit inf\u00e9rieure \u00e0 0,18 ml\/(100 g Al), que l'agent d'affinage utilis\u00e9 soit pur et efficace, et que la teneur en gaz de l'aluminium fondu apr\u00e8s affinage en ligne puisse \u00eatre ramen\u00e9e \u00e0 une valeur inf\u00e9rieure \u00e0 0,10\u20130,12 ml\/(100 g Al), ce qui permet de satisfaire pleinement aux exigences de production d'une feuille d'aluminium \u00ab double z\u00e9ro \u00bb de haute qualit\u00e9.<\/p>\n<p>Cependant, en mati\u00e8re de coul\u00e9e, la situation diff\u00e8re de celle de la coul\u00e9e et du laminage. D\u2019une part, le d\u00e9bit est \u00e9lev\u00e9 : celui de l\u2019alliage mou est plus de 3,8 fois sup\u00e9rieur \u00e0 celui de la coul\u00e9e et du laminage, et celui de l\u2019alliage dur est \u00e9galement plus de 2,5 fois sup\u00e9rieur. Le temps d\u2019action de l\u2019alliage tendre n\u2019est que de 4,7 min, et celui de l\u2019alliage dur de seulement 7,2 min. L\u2019effet d\u2019affinage est bien moindre que celui obtenu par coul\u00e9e et laminage. Deuxi\u00e8mement, la composition de l\u2019alliage est complexe et sa teneur \u00e9lev\u00e9e. La teneur de la masse fondue d\u2019alliage est bien sup\u00e9rieure \u00e0 celle de la coul\u00e9e pure. La teneur en gaz de l\u2019aluminium, dans des circonstances normales, apr\u00e8s affinage de la masse d\u2019aluminium fondue dans un four \u00e0 repos, est de 0,14 \u00e0 0,16 ml\/(100 g d\u2019Al) pour l\u2019aluminium pur, tandis que celle de l\u2019alliage 7075 est de 0,28 ml\/ (100 g d\u2019Al). Cela montre, sous un autre angle, qu\u2019il est plus difficile de r\u00e9duire la teneur en gaz dans les alliages 7075.<\/p>\n<p>Or, certains mat\u00e9riaux utilis\u00e9s dans l'a\u00e9rospatiale exigent que la teneur en gaz de la masse fondue de l'alliage 7075 soit maintenue \u00e0 0,08 mlL\/(100 g d'Al), ce qui est difficile \u00e0 obtenir. Cela n\u00e9cessite une conception ad\u00e9quate de la structure, de la capacit\u00e9 et de la vitesse du rotor de la ligne de production d'aluminium. <a href=\"http:\/\/www.alalloycasting.com\/fr\/degassing-device\/\">dispositif de d\u00e9gazage<\/a>, la puret\u00e9 et l'activit\u00e9 du gaz d'affinage, ainsi que la n\u00e9cessit\u00e9 d'adopter une structure \u00e0 double rotor, d'utiliser un gaz d'affinage hautement pur et actif, d'augmenter la capacit\u00e9 de mani\u00e8re appropri\u00e9e et de prolonger le temps de s\u00e9jour de l'aluminium liquide dans l'affineur. Le temps de s\u00e9jour effectif au milieu du processus permet de garantir l'efficacit\u00e9 de l'affinage en ligne.<\/p>","protected":false},"excerpt":{"rendered":"<p>The molten aluminum has enough time in the aluminum online degassing process, as long as the gas content of the molten aluminum entering the refiner&hellip;<\/p>","protected":false},"author":1,"featured_media":9737,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9736","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 Online Degassing Device -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The molten aluminum has enough time in the aluminum online degassing process, as long as the 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