{"id":10245,"date":"2021-09-10T06:13:45","date_gmt":"2021-09-10T06:13:45","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10245"},"modified":"2021-09-10T06:13:45","modified_gmt":"2021-09-10T06:13:45","slug":"molten-aluminum-feed-tip","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/molten-aluminum-feed-tip\/","title":{"rendered":"Buse d'alimentation en aluminium fondu"},"content":{"rendered":"<p>La buse d'alimentation en aluminium fondu est un composant essentiel qui assure la distribution et le transport directs de l'aluminium fondu vers l'interstice entre les cylindres au cours du processus de coul\u00e9e et de laminage. Le choix judicieux et la faisabilit\u00e9 des mat\u00e9riaux utilis\u00e9s pour la buse d'alimentation en aluminium fondu sont essentiels pour assurer une production normale, stabiliser les diff\u00e9rents param\u00e8tres du processus et am\u00e9liorer la qualit\u00e9 des brames coul\u00e9es-lamin\u00e9es.<\/p>\n<p><strong>Exigences relatives \u00e0 la buse d'alimentation en aluminium fondu<\/strong><\/p>\n<p>Une fois que l'aluminium fondu et purifi\u00e9 p\u00e9n\u00e8tre dans la buse de coul\u00e9e depuis le <a href=\"https:\/\/www.alalloycasting.com\/fr\/front-box\/\">bo\u00eete avant<\/a> Dans une certaine plage de temp\u00e9ratures (690-730 \u2103), sous une certaine pression, le fluide s'\u00e9coule \u00e0 l'int\u00e9rieur de la buse dans la direction de la sortie de la buse qui pr\u00e9sente la moindre r\u00e9sistance, cette r\u00e9sistance \u00e9tant inversement proportionnelle au d\u00e9bit. Relation fonctionnelle. Selon la th\u00e9orie de la couche limite en m\u00e9canique des fluides, la vitesse d'\u00e9coulement dans la zone centrale, \u00e9loign\u00e9e de la paroi de la buse, est sup\u00e9rieure \u00e0 celle observ\u00e9e dans la zone limite.<\/p>\n<p>Afin de garantir que l'\u00e9coulement du liquide autour de la sortie soit globalement stable et que le d\u00e9bit soit constant, et de maintenir l'\u00e9tat d'\u00e9quilibre normal entre la coul\u00e9e et le laminage \u00e0 l'int\u00e9rieur de la buse de coul\u00e9e, des blocs de d\u00e9rivation appropri\u00e9s doivent \u00eatre install\u00e9s \u00e0 l'int\u00e9rieur de celle-ci. Le bloc de d\u00e9rivation augmente la r\u00e9sistance \u00e0 l'\u00e9coulement dans la zone centrale et la r\u00e9duit dans la zone p\u00e9riph\u00e9rique, tout en permettant de contr\u00f4ler mod\u00e9r\u00e9ment la r\u00e9sistance des deux c\u00f4t\u00e9s. Par cons\u00e9quent, le dimensionnement raisonnable des canaux \u00e0 l'int\u00e9rieur de la buse, ainsi que la forme, la taille et la disposition des blocs de canaux, rev\u00eatent une importance capitale.<\/p>\n<p>Le <a href=\"http:\/\/www.alalloycasting.com\/fr\/casting-tip-nozzle\/\">buse d'injection<\/a> Le mat\u00e9riau ne doit pas entrer en r\u00e9action chimique avec l'aluminium fondu, ne doit pas se corroder, doit pr\u00e9senter une r\u00e9sistance et une rigidit\u00e9 suffisantes, un faible coefficient de dilatation thermique, ainsi qu'un certain degr\u00e9 de stabilit\u00e9 thermique. Les mat\u00e9riaux \u00e0 base de fibres d\u2019alumine et de fibres c\u00e9ramiques peuvent r\u00e9pondre aux exigences ci-dessus apr\u00e8s traitement. Les embouts de coul\u00e9e en fibres c\u00e9ramiques AdTech sont sp\u00e9cialement con\u00e7us pour la coul\u00e9e et le laminage des alliages d\u2019aluminium. L\u2019embout d\u2019alimentation AdTech pour coul\u00e9e en feuille pr\u00e9sente une densit\u00e9 mod\u00e9r\u00e9e, une bonne isolation thermique, des dimensions pr\u00e9cises, une haute r\u00e9sistance \u00e0 l\u2019oxydation et une faible d\u00e9formation.<\/p>","protected":false},"excerpt":{"rendered":"<p>The molten aluminum feed tip is a key component that directly distributes and transports the molten aluminum to the roll gap during the casting and&hellip;<\/p>","protected":false},"author":1,"featured_media":10251,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10245","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>Molten Aluminum Feed Tip, Casting Tips and 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