{"id":9148,"date":"2021-06-09T10:02:35","date_gmt":"2021-06-09T10:02:35","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9148"},"modified":"2021-06-09T10:02:35","modified_gmt":"2021-06-09T10:02:35","slug":"molten-aluminum-feeding-nozzle","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/molten-aluminum-feeding-nozzle\/","title":{"rendered":"Buse d'alimentation en aluminium fondu"},"content":{"rendered":"<p>Les exigences structurelles relatives \u00e0 la buse d'alimentation en aluminium fondu sont les suivantes : lorsque l'aluminium liquide traverse la buse d'alimentation, le flux doit \u00eatre r\u00e9gulier et sans angle mort, l'aluminium liquide doit \u00eatre r\u00e9parti uniform\u00e9ment dans l'espace entre les cylindres, la temp\u00e9rature \u00e0 la sortie de la buse d'alimentation doit \u00eatre homog\u00e8ne sur toute la section transversale, et la vitesse d'\u00e9coulement du m\u00e9tal \u00e0 la sortie de la buse d'alimentation doit \u00eatre constante.<\/p>\n<p>La buse d'alimentation en aluminium fondu est compos\u00e9e de deux buses, une sup\u00e9rieure et une inf\u00e9rieure. Un s\u00e9parateur de forme sp\u00e9cifique est plac\u00e9 entre les deux buses afin de garantir que l'aluminium fondu entrant par l'orifice d'admission soit r\u00e9parti uniform\u00e9ment dans toute la cavit\u00e9 interne de la buse d'alimentation. L'\u00e9coulement de la masse fondue dans la buse d'alimentation est g\u00e9n\u00e9ralement influenc\u00e9 par la position relative, la structure, le nombre et la taille des s\u00e9parateurs. Ceux-ci peuvent \u00eatre choisis en fonction des conditions propres au proc\u00e9d\u00e9 et \u00e0 l'\u00e9quipement.<\/p>\n<p>La forme et la taille du bloc de d\u00e9rivation peuvent \u00eatre adapt\u00e9es en fonction de la largeur de la plaque. Une fois le bloc de d\u00e9rivation mont\u00e9 sur la buse d'alimentation, le principe consiste \u00e0 garantir un \u00e9coulement fluide et une r\u00e9partition homog\u00e8ne de la temp\u00e9rature. Lors du montage, le bloc de d\u00e9rivation peut \u00eatre fix\u00e9 sur la buse d'alimentation \u00e0 l'aide d'une goupille.<\/p>\n<p>Dans l'id\u00e9al, il est pr\u00e9f\u00e9rable que la temp\u00e9rature du m\u00e9tal sortant par la sortie soit constante sur toute la longueur du <a href=\"http:\/\/www.alalloycasting.com\/fr\/feed-nozzle\/\">buse d'alimentation<\/a>. De cette mani\u00e8re, le m\u00e9tal en fusion peut se solidifier de mani\u00e8re uniforme apr\u00e8s \u00eatre entr\u00e9 en contact avec la surface du cylindre.<\/p>\n<p>Afin d'\u00e9viter une solidification non uniforme sur l'ensemble de la section transversale, des mesures de limitation de l'\u00e9coulement sont mises en \u0153uvre pour ralentir l'\u00e9coulement au centre et r\u00e9duire la temp\u00e9rature de mani\u00e8re appropri\u00e9e. L'\u00e9coulement du m\u00e9tal aux deux extr\u00e9mit\u00e9s \u00e9loign\u00e9es de la sortie s'intensifie et la temp\u00e9rature augmente, de sorte que la temp\u00e9rature du m\u00e9tal sur l'ensemble de la section transversale soit uniforme et que le m\u00e9tal puisse s'\u00e9couler simultan\u00e9ment hors de la cavit\u00e9 de sortie.<\/p>","protected":false},"excerpt":{"rendered":"<p>The structure requirements of the Molten Aluminum Feeding Nozzle\u00a0are: when the liquid aluminum passes through the feeding nozzle, the streamline shall be reasonable without dead&hellip;<\/p>","protected":false},"author":1,"featured_media":9150,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9148","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 - 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