unit\u00e9 de d\u00e9gazage<\/a> Il est fabriqu\u00e9 en SiN. Sa dur\u00e9e de vie est de 2 \u00e0 5 ans. Il pr\u00e9sente d'excellentes performances en mati\u00e8re de r\u00e9sistance \u00e0 la corrosion, aux chocs thermiques, \u00e0 l'oxydation, \u00e0 l'abrasion et de r\u00e9sistance m\u00e9canique. Le diam\u00e8tre de l'arbre est de 60 mm et celui de la t\u00eate de 200 mm, ce qui permet de r\u00e9duire la r\u00e9sistance lors de l'agitation. Con\u00e7u pour fonctionner \u00e0 une vitesse de 450 \u00e0 550 tr\/min, il permet de briser les bulles et de les disperser uniform\u00e9ment dans l'aluminium. Il s'av\u00e8re \u00e9conomique \u00e0 long terme.<\/p>\nLa m\u00e9thode de d\u00e9gazage par rotor rotatif permet d'obtenir des bulles de tr\u00e8s petit diam\u00e8tre, ce qui r\u00e9duit consid\u00e9rablement l'effet de culbutage des bulles \u00e0 la surface du liquide et permet ainsi d'augmenter relativement le d\u00e9bit de gaz. Pour obtenir un rendement de d\u00e9gazage \u00e9lev\u00e9, il est n\u00e9cessaire de garantir un certain d\u00e9bit de gaz. Le d\u00e9bit d\u2019air est g\u00e9n\u00e9ralement le principal facteur influen\u00e7ant l\u2019efficacit\u00e9 du d\u00e9gazage par flottation \u00e0 bulles. \u00c0 conditions \u00e9gales, l\u2019augmentation du d\u00e9bit de gaz accro\u00eet la surface sp\u00e9cifique d\u2019interaction gaz-liquide.<\/p>\n
Gr\u00e2ce \u00e0 l'effet d'agitation produit par le rotor en rotation dans l'aluminium fondu, celui-ci est en mouvement, ce qui favorise le renouvellement de l'interface gaz-liquide, ce qui contribue \u00e0 am\u00e9liorer la capacit\u00e9 de transfert de masse de l'aluminium fondu.<\/p>\n
En raison de la trajectoire ascendante non rectiligne des bulles dans l'aluminium fondu, leur temps de s\u00e9jour dans ce dernier est relativement long ; en d'autres termes, la dur\u00e9e de la d\u00e9shydrog\u00e9nation induite par l'action des bulles est prolong\u00e9e, ce qui permet \u00e0 l'effet de d\u00e9shydrog\u00e9nation de celles-ci de se manifester pleinement.<\/p>\n
Les bulles sont r\u00e9parties de mani\u00e8re homog\u00e8ne dans l'aluminium fondu, ce qui permet de r\u00e9duire la distance de diffusion des atomes d'hydrog\u00e8ne pr\u00e9sents dans l'aluminium fondu jusqu'aux bulles, renfor\u00e7ant ainsi le processus de diffusion dans l'ensemble du bain de fusion et am\u00e9liorant efficacement les conditions de transfert de masse.<\/p>","protected":false},"excerpt":{"rendered":"
The rotating rotor degassing method can give full play to the hydrogen removal advantages of the bubble floatation method. The key is that the liquid…<\/p>","protected":false},"author":1,"featured_media":9805,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[90,12338],"class_list":["post-9800","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-degassing","tag-dgeassing-rotor"],"yoast_head":"\n
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