{"id":10199,"date":"2021-09-07T10:03:27","date_gmt":"2021-09-07T10:03:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10199"},"modified":"2021-09-10T03:19:58","modified_gmt":"2021-09-10T03:19:58","slug":"head-box","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/head-box\/","title":{"rendered":"Caja de entrada"},"content":{"rendered":"

El aluminio fundido entra en la caja de cabeza desde la caja de filtrado CFF a trav\u00e9s del canal de flujo. Por lo general, hay dos formas de entrar en la caja de cabeza:<\/p>\n

1) La parte inferior del canal de fundici\u00f3n est\u00e1 m\u00e1s alta que la parte superior de la caja delantera, y el aluminio fundido se inyecta desde la parte superior de la caja delantera. En este caso, si se controla el nivel de l\u00edquido del dep\u00f3sito delantero para que se mantenga estable, dicho nivel no fluctuar\u00e1 hacia arriba ni hacia abajo.<\/p>\n

2) La parte inferior del canal de flujo se encuentra por debajo de la parte superior de la caja delantera, y el flujo de l\u00edquido se inyecta desde la parte media y superior de la caja delantera.<\/p>\n

Debido a la gran diferencia entre el nivel de l\u00edquido del canal de colada<\/a> y la entrada del aluminio fundido; esta entrada se utiliza generalmente para controlar el flujo del l\u00edquido mediante fibra cer\u00e1mica colocar los conos<\/a>.<\/p>\n

Cuando el tap\u00f3n de fibra cer\u00e1mica se encuentra cerca de la parte inferior del orificio, el aluminio fundido se inyecta a trav\u00e9s del hueco entre la parte superior del orificio y el tap\u00f3n de fibra cer\u00e1mica, lo que a menudo forma ondas en la superficie del l\u00edquido, provocando fluctuaciones en el nivel del l\u00edquido, lo que a su vez hace que fluct\u00fae el menisco en el hueco del rodillo de la boquilla. Como resultado, aparecen ondulaciones en la superficie de la banda laminada en caliente. Si el cono se encuentra cerca de la parte superior del orificio, el aluminio fundido se inyecta a trav\u00e9s del espacio entre la parte inferior del orificio y el cono de salida. En ese momento, el nivel del l\u00edquido del dep\u00f3sito delantero se mantiene b\u00e1sicamente estable, pero siguen produci\u00e9ndose fluctuaciones bajo la superficie estable.<\/p>\n

Esta onda se difracta a trav\u00e9s del orificio de salida y se transmite al espacio entre el rodillo de la boquilla, lo que provoca que el menisco fluct\u00fae y que la banda genere ondulaciones en el agua. Para reducir o eliminar este tipo de ondulaciones en el agua, es necesario evitar que las fluctuaciones causadas por la inyecci\u00f3n irregular de aluminio fundido en la entrada se transmitan a la parte delantera de la pieza de fundici\u00f3n y al rodillo. Por lo tanto, se puede insertar un filtro vertical entre la entrada y la salida de la caja delantera para impedir la propagaci\u00f3n y la difracci\u00f3n de la onda, lo que puede reducir o eliminar las ondulaciones en el agua. Si se aumenta adecuadamente la superficie del l\u00edquido entre el filtro y la salida, el efecto ser\u00e1 m\u00e1s evidente.<\/p>\n

Adem\u00e1s, tambi\u00e9n se pueden adoptar otras medidas durante el proceso, como reducir o eliminar en la medida de lo posible el espacio entre los rodillos de la boquilla para reducir o eliminar las ondulaciones causadas por el agua. Sin embargo, cuando el espacio entre los rodillos de la boquilla se reduce hasta cierto punto, pueden aparecer defectos como marcas de rodillo y segregaci\u00f3n superficial en la superficie de la banda. Se puede reducir la temperatura de colada o la velocidad de colada, aumentar la tensi\u00f3n superficial de la pel\u00edcula de \u00f3xido de aluminio en el menisco situado en la separaci\u00f3n entre los rodillos de la boquilla, aumentar el radio de curvatura del menisco, reducir las fluctuaciones del menisco y reducir o eliminar las ondulaciones del agua. Pero hacerlo reducir\u00e1 significativamente la eficiencia de la producci\u00f3n y, al mismo tiempo, puede provocar f\u00e1cilmente da\u00f1os en la boquilla.<\/p>","protected":false},"excerpt":{"rendered":"

The molten aluminum enters the head box from the CFF filter box through the flow trough. There are generally two ways to enter the head…<\/p>","protected":false},"author":1,"featured_media":10200,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nHead Box of Molten Aluminum Control Device, Casting Nozzle<\/title>\n<meta name=\"description\" content=\"The molten aluminum enters the head box from the CFF filter box through the flow trough. 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