{"id":2032,"date":"2020-05-25T02:25:26","date_gmt":"2020-05-25T02:25:26","guid":{"rendered":"http:\/\/alalloycasting.com\/?p=2032"},"modified":"2020-09-03T05:54:21","modified_gmt":"2020-09-03T05:54:21","slug":"define-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/define-degassing\/","title":{"rendered":"D\u00e9finir le d\u00e9gazage"},"content":{"rendered":"<p>D\u00e9finition du d\u00e9gazage : Le dispositif en ligne de purification de l'aluminium liquide a toujours fait l'objet de recherches dans le domaine de la coul\u00e9e et du laminage des alliages d'aluminium. La puret\u00e9 de l'azote utilis\u00e9 pour l'affinage dans ce dispositif de purification est un facteur cl\u00e9 qui influe directement sur l'efficacit\u00e9 de la purification.<\/p>\n<p><strong>Aluminium <\/strong><a href=\"https:\/\/www.alalloycasting.com\/fr\/degassing-unit\/\"><strong>unit\u00e9 de d\u00e9gazage<\/strong><\/a> situ\u00e9 entre le four et la machine de coul\u00e9e, a pour fonction principale d'\u00e9liminer l'hydrog\u00e8ne et d'autres r\u00e9sidus. AdTech a optimis\u00e9 le volume des bulles d'azote en am\u00e9liorant la buse rotative au cours du processus de purification de l'azote, et a ainsi augment\u00e9 la surface de contact entre l'azote et l'aluminium. Ainsi, l'unit\u00e9 de d\u00e9gazage permet d'am\u00e9liorer l'efficacit\u00e9 du d\u00e9gazage et de l'\u00e9limination des scories, d'atteindre l'objectif de purification de l'aluminium et d'am\u00e9liorer la qualit\u00e9 du produit.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4464\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1.jpg\" alt=\"D\u00e9finir le d\u00e9gazage\" width=\"803\" height=\"534\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1.jpg 803w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1-300x200.jpg 300w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1-768x511.jpg 768w\" sizes=\"auto, (max-width: 803px) 100vw, 803px\" \/><\/p>\n<h2>D\u00e9finition du d\u00e9gazage de l'aluminium fondu<\/h2>\n<p><a href=\"https:\/\/www.alalloycasting.com\/fr\/aluminum-degassing-machine\/\">Machine de d\u00e9gazage Adtech<\/a> est principalement utilis\u00e9 pour \u00e9liminer l'hydrog\u00e8ne (H) et les scories de l'aluminium fondu. Il repose sur le principe de la flottation par gaz. Le rotor injecte un gaz inerte ou un m\u00e9lange de chlore et de gaz inerte dans l'aluminium fondu et divise le gaz en minuscules bulles dispers\u00e9es. Les bulles remontent \u00e0 la surface de l'aluminium fondu et effectuent simultan\u00e9ment les op\u00e9rations suivantes :<\/p>\n<ul>\n<li>L'hydrog\u00e8ne est absorb\u00e9 sous forme de bulles et est \u00e9limin\u00e9.<\/li>\n<li>Le chlorure est \u00e9limin\u00e9 (il se forme par r\u00e9action chimique entre un m\u00e9tal alcalin et du chlore gazeux).<\/li>\n<li>\u00c9liminer les scories.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4465\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1-1.jpg\" alt=\"D\u00e9finir le d\u00e9gazage\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/05\/Define-Degassing-1-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>La pression partielle d'hydrog\u00e8ne dans la bulle d'azote qui vient de sortir de la buse en graphite est nulle. Lorsque l'azote remonte \u00e0 la surface, l'hydrog\u00e8ne se diffuse depuis l'aluminium en fusion vers la bulle d'azote sous l'effet de la diff\u00e9rence de pression d'hydrog\u00e8ne, et ce processus se poursuit jusqu'\u00e0 ce que la pression partielle d'hydrog\u00e8ne dans la bulle d'azote s'\u00e9quilibre. Lorsque la pression partielle d'hydrog\u00e8ne dans l'aluminium liquide est \u00e9quilibr\u00e9e, la phase d'injection d'azote est interrompue. L'azote gazeux remonte alors \u00e0 la surface pour \u00eatre \u00e9vacu\u00e9. Le syst\u00e8me de d\u00e9gazage en ligne permet ainsi d'\u00e9liminer l'hydrog\u00e8ne et les scories.<\/p>","protected":false},"excerpt":{"rendered":"<p>Define Degassing: The online aluminum liquid purification device has always been the subject of research on aluminum alloy casting and rolling. And the purity of&hellip;<\/p>","protected":false},"author":1,"featured_media":4291,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[232,231],"class_list":["post-2032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-liquid-purification-device","tag-define-degassing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Define Degassing | Aluminum Liquid Purification Device<\/title>\n<meta name=\"description\" content=\"Define Degassing: it is mainly used for the hydrogen (H) and slags removal from molten aluminum. 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