{"id":8181,"date":"2021-03-30T09:02:39","date_gmt":"2021-03-30T09:02:39","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8181"},"modified":"2021-03-30T09:02:39","modified_gmt":"2021-03-30T09:02:39","slug":"hop-top-casting-sprue-bush","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/hop-top-casting-sprue-bush\/","title":{"rendered":"Douille de coul\u00e9e \u00e0 t\u00eate saillante"},"content":{"rendered":"<p>La douille de coul\u00e9e \u00ab Hop Top \u00bb est largement utilis\u00e9e dans la coul\u00e9e \u00e0 t\u00eate chaude de l'aluminium et des alliages d'aluminium. Elle est utilis\u00e9e en association avec la table de coul\u00e9e pour la coul\u00e9e de pr\u00e9cision. Lors de la coul\u00e9e, la plaque de distribution de l'aluminium en fusion est raccord\u00e9e au moule. La douille de coul\u00e9e \u00ab Hop Top \u00bb pr\u00e9sente une densit\u00e9 et une duret\u00e9 \u00e9lev\u00e9es, ainsi qu'une bonne r\u00e9sistance aux chocs thermiques et aux impacts. Elle offre une grande pr\u00e9cision, une longue dur\u00e9e de vie et de faibles co\u00fbts d'entretien.<\/p>\n<p>Caract\u00e9ristiques techniques de la douille de coul\u00e9e \u00ab Hop Top \u00bb :<br \/>\n3,5 pouces, 3 pouces, 4 pouces, 4,5 pouces, 5 pouces, 5,5 pouces, 6 pouces, 7 pouces, 8 pouces, 9 pouces, 10 pouces, 12 pouces, 14 pouces, ou selon les sp\u00e9cifications du client<\/p>\n<p><a href=\"http:\/\/www.alalloycasting.com\/fr\/hot-top-casting-parts\/\">Moulage \u00e0 chaud<\/a> Ce terme d\u00e9signe un proc\u00e9d\u00e9 de coul\u00e9e dans lequel la partie sup\u00e9rieure du cristalliseur est dot\u00e9e d'une section offrant de bonnes performances de conservation de la chaleur. L'objectif principal de la coul\u00e9e \u00e0 \u00ab hot top \u00bb est de ralentir le refroidissement initial de la partie sup\u00e9rieure du moule.<\/p>\n<p>La coul\u00e9e \u00e0 t\u00eate chaude pr\u00e9sente non seulement l'avantage d'am\u00e9liorer la qualit\u00e9 de surface du lingot, mais aussi de favoriser la solidification directionnelle de bas en haut et de limiter le retrait du lingot. Si une plaque filtrante est install\u00e9e simultan\u00e9ment dans la section \u00e0 t\u00eate chaude, elle permet d'emp\u00eacher les scories en fusion de p\u00e9n\u00e9trer dans le lingot.<\/p>\n<p>La cl\u00e9 de la technologie de moulage \u00e0 chapeau chaud r\u00e9side dans la conception du chapeau chaud du moule.<br \/>\nIl existe de nombreux types de moules de coul\u00e9e \u00e0 surface chaude.<br \/>\nLa conception initiale du cristallisoir \u00e0 toit chaud pr\u00e9voit la mise en place, au-dessus du cristallisoir, d'un rev\u00eatement suppl\u00e9mentaire en amiante assurant l'isolation thermique et la conservation de la chaleur.<br \/>\nL'amiante est un mat\u00e9riau isolant thermique r\u00e9sistant \u00e0 la chaleur, qui permet de chauffer efficacement le bain d'aluminium fondu lorsqu'il est utilis\u00e9 comme rev\u00eatement sup\u00e9rieur r\u00e9sistant \u00e0 la chaleur.<\/p>\n<p>La diff\u00e9rence entre le proc\u00e9d\u00e9 de coul\u00e9e \u00e9lectromagn\u00e9tique \u00e0 t\u00eate chaude et le proc\u00e9d\u00e9 de coul\u00e9e \u00e9lectromagn\u00e9tique classique r\u00e9side dans le fait que le premier adopte une structure de couvercle de protection sp\u00e9ciale et utilise des mat\u00e9riaux r\u00e9fractaires pour former la partie sup\u00e9rieure de la colonne de m\u00e9tal en fusion confin\u00e9e par la t\u00eate chaude ; en d'autres termes, la t\u00eate chaude fait office de couvercle de protection.<\/p>","protected":false},"excerpt":{"rendered":"<p>Hop top Casting Sprue Bush is widely used in the hot top casting of aluminum and aluminum alloys. It is used in conjunction with the&hellip;<\/p>","protected":false},"author":1,"featured_media":8182,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8181","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>Hop top Casting Sprue Bush for Aluminum Alloys Casting<\/title>\n<meta name=\"description\" content=\"Hop top Casting Sprue Bush is widely used in the hot top casting. 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