{"id":12364,"date":"2022-01-22T08:43:00","date_gmt":"2022-01-22T08:43:00","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12364"},"modified":"2022-01-19T09:02:23","modified_gmt":"2022-01-19T09:02:23","slug":"molten-aluminium-degassing-equipment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/molten-aluminium-degassing-equipment\/","title":{"rendered":"\u00c9quipement de d\u00e9gazage de l'aluminium fondu"},"content":{"rendered":"

Les \u00e9quipements de d\u00e9gazage de l'aluminium fondu traitent principalement l'hydrog\u00e8ne pr\u00e9sent dans l'aluminium fondu ainsi que d'autres r\u00e9sidus (m\u00e9taux alcalins, inclusions de scories), qui sont \u00e9limin\u00e9s apr\u00e8s avoir \u00e9t\u00e9 trait\u00e9s par ces \u00e9quipements.<\/p>\n

Le principe de fonctionnement des \u00e9quipements de d\u00e9gazage en ligne repose sur le principe de la flottation \u00e0 l'air. Le gaz de traitement (gaz inerte ou m\u00e9lange de gaz inerte et de chlore gazeux) est inject\u00e9 dans la masse fondue par le rotor, qui le fragmente en microbulles uniform\u00e9ment dispers\u00e9es ; ces microbulles remontent ensuite dans la masse fondue.<\/p>\n

L'hydrog\u00e8ne et les inclusions sont adsorb\u00e9s dans les bulles, puis remontent \u00e0 la surface de la masse fondue pour en \u00eatre \u00e9limin\u00e9s.<\/p>\n

L'efficacit\u00e9 de d\u00e9gazage du bo\u00eete de d\u00e9gazage<\/a> est stable \u00e0 60% en moyenne. Lorsque la teneur en argon et en aluminium du liquide est inf\u00e9rieure ou \u00e9gale \u00e0 1%, le meilleur rendement de d\u00e9gazage peut atteindre 0,09 cm\u00b3\/100 g.<\/p>\n

\"\u00c9quipement<\/p>\n

Caract\u00e9ristiques des \u00e9quipements de d\u00e9gazage de l'aluminium fondu<\/strong><\/p>\n

1. L'\u00e9quipement de raffinage \u00e0 air comprim\u00e9 en ligne est dot\u00e9 d'une conception \u00e9tanche qui emp\u00eache l'entr\u00e9e d'air ext\u00e9rieur et \u00e9vite ainsi toute pollution secondaire.<\/p>\n

2. Conception \u00e0 double corps : la partie de d\u00e9gazage et la partie de chauffage \u00e9lectrique peuvent pivoter (l'amplitude de rotation est adapt\u00e9e aux conditions du site) et sont dot\u00e9es d'une fonction d'autoblocage, ce qui \u00e9limine les risques li\u00e9s \u00e0 une mauvaise utilisation et facilite la maintenance.<\/p>\n

3. Les pi\u00e8ces essentielles du m\u00e9canisme d'entra\u00eenement du rotor sont fabriqu\u00e9es \u00e0 partir d'aciers inoxydables r\u00e9sistants \u00e0 la chaleur et \u00e0 la corrosion, qui sont usin\u00e9s et fa\u00e7onn\u00e9s par commande num\u00e9rique afin de garantir la verticalit\u00e9 du rotor, la formation d'un lit de microbulles et un taux de d\u00e9gazage stable.<\/p>\n

4. Le rotor de d\u00e9gazage, le manchon de protection du dispositif de chauffage et le manchon de protection du thermocouple sont tous fabriqu\u00e9s en c\u00e9ramique de nitrure de silicium, un mat\u00e9riau compar\u00e9 au graphite, aux composites SiC-nitrure de silicium et \u00e0 d\u2019autres mat\u00e9riaux couramment utilis\u00e9s dans l\u2019industrie de l\u2019aluminium. Ils pr\u00e9sentent de nets avantages en termes de r\u00e9sistance \u00e0 la corrosion par l'aluminium, de r\u00e9sistance aux chocs thermiques, de r\u00e9sistance \u00e0 l'oxydation, de r\u00e9sistance \u00e0 l'usure, de r\u00e9sistance m\u00e9canique, etc.<\/p>\n

5. Utilisez un rev\u00eatement en aluminium antiadh\u00e9sif et des mat\u00e9riaux d'isolation thermique de haute qualit\u00e9 pour maintenir la temp\u00e9rature de la coque en dessous de 65 degr\u00e9s.<\/p>\n

6. Le d\u00e9bit de gaz et la vitesse du rotor sont r\u00e9glables, et la taille des bulles peut \u00eatre contr\u00f4l\u00e9e, ce qui permet au gaz inject\u00e9 d'exercer un effet optimal en mati\u00e8re de d\u00e9gazage, d'\u00e9limination des scories et d'affinage.<\/p>","protected":false},"excerpt":{"rendered":"

Molten Aluminium Degassing Equipment mainly treats hydrogen in molten aluminum and other residues (alkali metals, slag inclusions), which are removed after being treated by the…<\/p>","protected":false},"author":1,"featured_media":12365,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-12364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit"],"yoast_head":"\nMolten Aluminium Degassing Equipment -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Molten Aluminium Degassing Equipment mainly treats hydrogen in molten aluminum and other residues (alkali metals, slag inclusions).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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