{"id":4596,"date":"2020-09-09T03:30:59","date_gmt":"2020-09-09T03:30:59","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4596"},"modified":"2020-09-09T03:30:59","modified_gmt":"2020-09-09T03:30:59","slug":"hot-top-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/hot-top-casting\/","title":{"rendered":"Fundici\u00f3n en caliente"},"content":{"rendered":"<p>En la producci\u00f3n mediante fundici\u00f3n y colada de aleaciones de aluminio deformadas, la colada con parte superior caliente es un proceso de fundici\u00f3n muy utilizado, que presenta las siguientes caracter\u00edsticas:<\/p>\n<p>(1) El tiempo de permanencia del metal en el molde tras la solidificaci\u00f3n y el conformado es breve, lo que permite evitar pr\u00e1cticamente el fen\u00f3meno de recalentamiento secundario; por ello, la superficie del lingote es plana y lisa, y la calidad es buena.<\/p>\n<p>(2) Antes de que el lingote sea enfriado directamente por el agua de refrigeraci\u00f3n en el borde inferior del molde, la pared l\u00edquida de la cavidad que se forma es muy delgada. Se puede obtener una elevada velocidad de cristalizaci\u00f3n, por lo que las dendritas son finas.<\/p>\n<p>(3) Est\u00e1 equipado con una tapa t\u00e9rmica situada sobre el cristalizador, que aumenta la distancia entre el nivel del l\u00edquido y el frente de cristalizaci\u00f3n, y eleva la temperatura de la masa fundida. El gas precipitado durante la cristalizaci\u00f3n del lingote y la escoria que este transporta flotan de forma controlada hasta la superficie del l\u00edquido, lo que favorece la mejora de la pureza del lingote.<\/p>\n<p>(4) Como el <a href=\"http:\/\/www.alalloycasting.com\/es\/hot-top-casting-cap\/\">gorro t\u00e9rmico<\/a> Al aumentar el nivel del l\u00edquido, se puede realizar la colada al mismo nivel, lo que reduce la contaminaci\u00f3n secundaria de la masa fundida en el sistema de colada.<\/p>\n<p>(5) Los cristalizadores pueden disponerse de forma compacta durante la colada, y los moldes para la colada de una sola vez se conectan mediante una placa de derivaci\u00f3n, lo que mejora la eficiencia de la producci\u00f3n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4597\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Hot-Top-Casting.jpg\" alt=\"Fundici\u00f3n en caliente\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Hot-Top-Casting.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Hot-Top-Casting-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>El equipo para el proceso de fundici\u00f3n en caliente presenta las siguientes ventajas:<\/p>\n<p>(1) Se pueden fundir varios lingotes a la vez. El n\u00famero de lingotes que se pueden fundir por cada colada viene determinado por la superficie del pozo de fundici\u00f3n y el di\u00e1metro del lingote. Una planta de procesamiento de aluminio puede fundir lingotes de peque\u00f1o tama\u00f1o de una sola vez, lo que resulta mucho m\u00e1s productivo que los moldes convencionales y la fundici\u00f3n horizontal.<\/p>\n<p>(2) Operaci\u00f3n de colada sencilla. Al inicio de la colada, abre el orificio de colada. Cuando el aluminio fundido en el canal de colada alcance una altura de 90%, levanta el <a href=\"http:\/\/www.alalloycasting.com\/es\/launder-dam\/\">presa de contenci\u00f3n<\/a> en el <a href=\"http:\/\/www.alalloycasting.com\/es\/distributing-launder\/\">canal de distribuci\u00f3n<\/a> al mismo tiempo, y dirigir r\u00e1pidamente el aluminio fundido hacia los tubos gu\u00eda. Fundici\u00f3n. Una vez iniciada la fundici\u00f3n, ajustar la presi\u00f3n y el caudal del agua y aumentar a tiempo el nivel de l\u00edquido en el canal de colada. De esta forma, se pueden fundir docenas de lingotes a la vez, y solo se necesitan fundidores cualificados durante todo el proceso de fundici\u00f3n: entre 3 y 4 personas.<\/p>\n<p>(3) F\u00e1cil resoluci\u00f3n de problemas. En el proceso de fundici\u00f3n, si se detecta que un lingote presenta grietas, fugas, etc., basta con tapar el tubo de desmoldeo con <a href=\"http:\/\/www.alalloycasting.com\/es\/refractory-fiber-cone\/\">cono de extracci\u00f3n<\/a>.<\/p>\n<p>(4) La calidad de la superficie del lingote es buena. La experiencia demuestra que, si se llevan a cabo los preparativos previos a la fundici\u00f3n \u2014especialmente si se instala el molde y se lubrica el acabado\u2014, se puede obtener una superficie del lingote de mejor calidad.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the melting and casting production of deformed aluminum alloys, hot top casting is a widely used casting process, which has the following characteristics: (1)&hellip;<\/p>","protected":false},"author":1,"featured_media":4598,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[10],"class_list":["post-4596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-hot-top-casting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hot Top Casting used for Deformed Aluminum 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