{"id":9479,"date":"2021-07-07T09:08:43","date_gmt":"2021-07-07T09:08:43","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9479"},"modified":"2021-07-07T09:08:43","modified_gmt":"2021-07-07T09:08:43","slug":"ingot-hot-top-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/ingot-hot-top-casting\/","title":{"rendered":"Fundici\u00f3n en caliente de lingotes"},"content":{"rendered":"

El lingote de aluminio producido mediante fundici\u00f3n con parte superior caliente presenta una estructura uniforme y buenas propiedades mec\u00e1nicas. Para obtener dicha estructura de fundici\u00f3n, se utiliza la fundici\u00f3n con parte superior caliente para la fundici\u00f3n de lingotes redondos.<\/p>\n

La calidad de los lingotes de aleaci\u00f3n de aluminio tiene un impacto importante en los procesos de transformaci\u00f3n posteriores y en la calidad de los productos de aluminio. Entre los defectos m\u00e1s comunes en los lingotes se encuentran las grietas, los poros, la porosidad, las inclusiones de escoria, la segregaci\u00f3n y la separaci\u00f3n en fr\u00edo, entre otros. En la producci\u00f3n real, estos defectos pueden deberse a numerosas causas, entre las que se incluyen la estructura del molde de fundici\u00f3n y las propiedades de la aleaci\u00f3n, el grado de purificaci\u00f3n de la masa fundida y el refinamiento del grano, as\u00ed como los par\u00e1metros del proceso de fundici\u00f3n, etc.<\/p>\n

La calidad del lingote incluye su estructura y el acabado de su superficie. Actualmente se considera que la estructura de grano fino y uniforme en la secci\u00f3n transversal del lingote es la m\u00e1s adecuada para este. Para obtener este tipo de estructura de fundici\u00f3n, la fundici\u00f3n de lingotes redondos se realiza mediante el m\u00e9todo de fundici\u00f3n con parte superior caliente.<\/p>\n

\"\"<\/p>\n

Ventajas de la fundici\u00f3n en caliente de lingotes<\/p>\n

(1) El lingote producido mediante fundici\u00f3n con parte superior caliente presenta una estructura uniforme y buenas propiedades mec\u00e1nicas. Esto se debe a que la altura efectiva de cristalizaci\u00f3n del molde de \u00abhot top\u00bb es muy reducida, lo que aumenta la velocidad de enfriamiento del lingote, hace que la cavidad l\u00edquida del lingote sea menos profunda y reduce la zona de transici\u00f3n, mejorando as\u00ed la compactaci\u00f3n del lingote.<\/p>\n

(2) La colada con \u00abhot top\u00bb elimina el embudo y permite un flujo lateral. El nivel del metal fundido en el \u00abhot top\u00bb y canal de distribuci\u00f3n<\/a> se mantiene en el mismo nivel, lo que permite una colada estable en molde corto y una colada uniforme. La pel\u00edcula de \u00f3xido presente en la superficie del l\u00edquido dentro del cristalizador es estable y no provoca agitaci\u00f3n, lo que evita de forma eficaz la contaminaci\u00f3n secundaria de la masa fundida y mejora la pureza del metal.<\/p>\n

(3) La superficie del lingote es lisa, y el grado y la profundidad de la segregaci\u00f3n inversa alrededor del lingote se reducen considerablemente. Esto se debe a que, en la colada con parte superior caliente, el efecto de enfriamiento a contracorriente del agua de enfriamiento secundaria es relativamente suficiente, lo que evita de forma eficaz la refundici\u00f3n secundaria del condensado, inhibiendo as\u00ed la formaci\u00f3n de n\u00f3dulos de segregaci\u00f3n. Al mismo tiempo, durante el proceso de colada, la cabeza del lingote mantiene siempre una columna l\u00edquida estable, lo que reduce la posici\u00f3n de solidificaci\u00f3n del metal fundido en el molde, evita eficazmente el enfriamiento prematuro del nivel del metal l\u00edquido y hace que el menisco se estabilice, inhibiendo as\u00ed de forma eficaz la formaci\u00f3n de barreras fr\u00edas.<\/p>","protected":false},"excerpt":{"rendered":"

The aluminum ingot produced by hot top casting has uniform structure and good mechanical properties. In order to obtain such a casting structure, aluminum ingot…<\/p>","protected":false},"author":1,"featured_media":9480,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nIngot Hot Top Casting, Aluminum Round Ingot Casting<\/title>\n<meta name=\"description\" content=\"The aluminum ingot produced by hot top casting has a uniform structure and good mechanical properties. 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