{"id":11645,"date":"2021-12-07T03:50:50","date_gmt":"2021-12-07T03:50:50","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11645"},"modified":"2021-12-07T03:53:14","modified_gmt":"2021-12-07T03:53:14","slug":"aluminum-round-rod-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-round-rod-casting\/","title":{"rendered":"Fundici\u00f3n de varillas redondas de aluminio"},"content":{"rendered":"<p>El m\u00e9todo de colada en caliente se utiliza ampliamente en el proceso de fundici\u00f3n de barras redondas de aluminio. De este modo, no solo se mejoran las condiciones de contacto entre el aluminio fundido y el molde, sino que tambi\u00e9n se potencia el efecto de enfriamiento, lo que permite reducir la estructura gruesa que se forma durante la colada del lingote de aluminio y, por lo tanto, minimizar la presencia de burbujas de aire.<\/p>\n<p>Cuando se inicia la colada del aluminio fundido, este se vierte primero desde el dep\u00f3sito en el molde refrigerado por agua. Por lo tanto, durante el proceso de vertido del aluminio fundido en el molde refrigerado por agua se generan grandes cantidades de \u00f3xidos. Adem\u00e1s, incluso despu\u00e9s de que el proceso de fundici\u00f3n haya alcanzado un estado estable, los \u00f3xidos producidos en la superficie del aluminio fundido dentro del molde refrigerado por agua seguir\u00e1n acumul\u00e1ndose; estos \u00f3xidos acumulados penetrar\u00e1n en la capa superficial y el lingote de aleaci\u00f3n de aluminio presentar\u00e1 una parte rebajada.<\/p>\n<p>Si la aleaci\u00f3n contiene una alta concentraci\u00f3n de Mg, los problemas causados por los \u00f3xidos se agravar\u00e1n considerablemente.<\/p>\n<p>Para resolver estos problemas, se ha propuesto tratar previamente el aluminio fundido con cloro (Cl\u2082), hexafluoruro de azufre (SF\u2086) gaseoso, etc., con el fin de frenar la oxidaci\u00f3n de la superficie del aluminio fundido. Sin embargo, dado que este m\u00e9todo se lleva a cabo durante el proceso de refinado en l\u00ednea, su eficacia para inhibir la oxidaci\u00f3n superficial del aluminio fundido en el interior del molde resulta insuficiente.<\/p>\n<p>Adem\u00e1s, dado que el Cl\u2082 es una sustancia t\u00f3xica, no solo provocar\u00e1 problemas medioambientales, sino que tambi\u00e9n agravar\u00e1 considerablemente el deterioro de los equipos perif\u00e9ricos.<\/p>\n<p>Por otro lado, el SF\u2086 tiene un potencial de calentamiento global de hasta 20 000, por lo que no es recomendable su uso desde el punto de vista de la prevenci\u00f3n del calentamiento global.<\/p>\n<p>Adem\u00e1s, el SF\u2086 reacciona qu\u00edmicamente con el hidr\u00f3geno contenido en el aluminio fundido durante el proceso de deshidrogenaci\u00f3n mediante SNIF, generando fluoruro de hidr\u00f3geno (HF). Dado que el HF es una sustancia altamente corrosiva, da\u00f1ar\u00e1 el horno. Adem\u00e1s, el HF es muy t\u00f3xico para los organismos. La mayor\u00eda de las fundiciones de aluminio utilizan gas inerte (nitr\u00f3geno o arg\u00f3n) como gas protector, lo que puede evitar que la superficie del aluminio fundido se oxide.<\/p>\n<p>Para resolver estos problemas, <a href=\"http:\/\/www.alalloycasting.com\/es\/hot-top-casting\/\">fundici\u00f3n en caliente<\/a> Se utiliza el m\u00e9todo \u00abhot top\u00bb. El m\u00e9todo \u00abhot top\u00bb consiste en colocar un recipiente refractario, que tiene pr\u00e1cticamente la misma forma que el molde, en la parte superior de este, y en verter el aluminio fundido en dicho recipiente durante la colada. En este m\u00e9todo, se suele utilizar un molde de grafito. Con este m\u00e9todo, la presi\u00f3n generada por el aluminio fundido en el interior del recipiente refractario se aplica al interior del molde. En otras palabras, dado que el aluminio fundido se introduce a presi\u00f3n en el molde, es dif\u00edcil que se formen burbujas de aire, por lo que este m\u00e9todo se ha aplicado a la producci\u00f3n de varillas redondas de aluminio de peque\u00f1o di\u00e1metro.<\/p>","protected":false},"excerpt":{"rendered":"<p>The hot top casting method is widely used in the aluminum round rod casting process. In this way, not only can the contact conditions between&hellip;<\/p>","protected":false},"author":1,"featured_media":11646,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13003,13004],"class_list":["post-11645","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-round-rod-casting","tag-hot-top-casting-method"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Round Rod Casting, Hot Top Casting Method<\/title>\n<meta name=\"description\" content=\"The hot top casting method is widely used in the aluminum round rod casting process. 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