{"id":9536,"date":"2021-07-11T07:21:33","date_gmt":"2021-07-11T07:21:33","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9536"},"modified":"2021-07-09T07:46:46","modified_gmt":"2021-07-09T07:46:46","slug":"molten-aluminum-hot-top-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-aluminum-hot-top-casting\/","title":{"rendered":"Fundici\u00f3n en molde caliente con aluminio fundido"},"content":{"rendered":"

Tras un determinado periodo de desgasificaci\u00f3n y filtrado, el aluminio fundido comienza a pasar a la fase de colada en caliente.<\/p>\n

En esta fase, la velocidad de colada comienza a aumentar desde la velocidad inicial hasta la velocidad normal de colada; la temperatura de colada tambi\u00e9n comienza a aumentar hasta alcanzar la temperatura normal de colada, y el volumen de agua de enfriamiento (presi\u00f3n del agua) aumenta desde el volumen inicial (presi\u00f3n inicial) hasta el volumen normal de agua de colada (presi\u00f3n normal).<\/p>\n

Durante la fase de fundici\u00f3n en molde caliente de aluminio fundido, hay que tener en cuenta lo siguiente:<\/p>\n

(1) Esta fase es la m\u00e1s propensa a fallos en el proceso de fundici\u00f3n y presenta un alto riesgo de explosiones, quemaduras y otros accidentes graves. Seg\u00fan las estad\u00edsticas pertinentes, m\u00e1s del 70% de los accidentes relacionados con la fundici\u00f3n se produjeron en esta fase. Por lo tanto, se debe prestar especial atenci\u00f3n a la seguridad en esta fase y reducir al m\u00ednimo el n\u00famero de personas presentes en la planta.<\/p>\n

(2) La velocidad inicial de colada suele ser de entre 50% y 70% de la velocidad normal de colada. Por lo general, la velocidad normal de colada debe alcanzarse en un tramo de colada de 200 mm.<\/p>\n

(3) El volumen de agua de enfriamiento (presi\u00f3n del agua) suele empezar a aumentar con respecto al volumen inicial (presi\u00f3n inicial) cuando comienza el tiempo de mantenimiento. Cuando la velocidad de colada alcanza su nivel normal, el volumen de agua (presi\u00f3n del agua) tambi\u00e9n alcanza el volumen (presi\u00f3n) normal del agua de enfriamiento de la colada.<\/p>\n

(4) Presta atenci\u00f3n a la observaci\u00f3n en esta fase. El molde con fugas de aluminio debe sellarse con un tap\u00f3n de fibra cer\u00e1mica<\/a> a tiempo para evitar una fuga excesiva de aluminio y, de este modo, evitar explosiones u otros accidentes.<\/p>\n

(5) En esta fase, tambi\u00e9n es f\u00e1cil que se produzca una obstrucci\u00f3n por aluminio debido a la condensaci\u00f3n de este metal en el tubo de aspiraci\u00f3n. Las causas de la obstrucci\u00f3n por aluminio son numerosas. Por lo general, se debe a la baja temperatura del aluminio fundido o a que el tiempo de llenado y de mantenimiento es demasiado prolongado. Esto debe analizarse espec\u00edficamente en la producci\u00f3n real. El aluminio del tap\u00f3n puede volver a fundirse y filtrarse durante el proceso de fundici\u00f3n, provocando una explosi\u00f3n. El aluminio del tap\u00f3n tambi\u00e9n puede hacer que el caudal del aluminio fundido sea demasiado bajo en una determinada plataforma, lo que dificulta el llenado con aluminio fundido y, en \u00faltima instancia, la propia fundici\u00f3n.<\/p>\n

(6) Por lo general, la colada debe interrumpirse a tiempo cuando la fuga de aluminio o el aluminio de tap\u00f3n alcance m\u00e1s de 5 moldes, para evitar cualquier peligro.<\/p>\n

(7) En esta fase, el nivel de l\u00edquido de la plataforma de colada variar\u00e1 considerablemente. Intente evitar grandes oleadas de aluminio fundido. Preste atenci\u00f3n a la velocidad de inclinaci\u00f3n del horno vertical o al ajuste del ojo del horno manual. El nivel de l\u00edquido de la plataforma debe ajustarse en poco tiempo. Para alcanzar un valor estable, este debe situarse entre 30 mm y 40 mm por debajo de la superficie m\u00e1s alta de la plataforma.<\/p>","protected":false},"excerpt":{"rendered":"

After a certain period of degassing and filtering, the molten aluminum begins to enter the molten aluminum hot top casting stage. At this stage, the…<\/p>","protected":false},"author":1,"featured_media":9537,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nMolten Aluminum Hot Top Casting, Casting Launder<\/title>\n<meta name=\"description\" content=\"After a certain period of degassing and filtering, the molten aluminum begins to enter the molten aluminum hot top casting stage.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/es\/molten-aluminum-hot-top-casting\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Molten Aluminum Hot Top 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