{"id":5934,"date":"2020-10-24T14:01:45","date_gmt":"2020-10-24T14:01:45","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5934"},"modified":"2021-02-20T02:27:58","modified_gmt":"2021-02-20T02:27:58","slug":"slag-inclusions","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/slag-inclusions\/","title":{"rendered":"Inclusiones de escoria"},"content":{"rendered":"

La escoria mezclada con el lingote u otras impurezas no met\u00e1licas que se introducen en \u00e9l se denominan \u00abinclusiones no met\u00e1licas\u00bb. Las caracter\u00edsticas de fractura son bandas o escamas negras, y las caracter\u00edsticas microestructurales consisten principalmente en tejidos desordenados negros, lineales, masivos y floculentos, con una diferencia de color evidente respecto a la matriz. Las inclusiones no met\u00e1licas son una causa importante de delaminaci\u00f3n y de muchos defectos superficiales en los productos transformados de aluminio. Durante el tratamiento t\u00e9rmico y el proceso de calentamiento, la presencia de inclusiones no met\u00e1licas puede favorecer la formaci\u00f3n de subporosidad y burbujas. En cuanto a las propiedades mec\u00e1nicas, las inclusiones no met\u00e1licas son puntos de concentraci\u00f3n de tensiones, lo que reduce el l\u00edmite de resistencia y el alargamiento de la aleaci\u00f3n. En particular, la reducci\u00f3n del alargamiento transversal y de las propiedades mec\u00e1nicas din\u00e1micas (resistencia al impacto \u03c6, resistencia a la fatiga y tenacidad a la fractura) es m\u00e1s grave. Adem\u00e1s, las inclusiones no met\u00e1licas reducen la resistencia a la corrosi\u00f3n bajo tensi\u00f3n de la aleaci\u00f3n.<\/p>\n

Las inclusiones no met\u00e1licas (inclusiones de escoria) suelen detectarse al inspeccionar la probeta transversal del lingote con bajo aumento. En todos los productos de aleaci\u00f3n, no debe haber m\u00e1s de dos inclusiones de escoria en la muestra del lingote, y la superficie de cada una de ellas debe ser inferior a 0,5 mm\u00b2, de lo contrario se rechazar\u00e1. Las inclusiones no met\u00e1licas (inclusiones de escoria) son los residuos m\u00e1s frecuentes en los lingotes de aleaci\u00f3n de aluminio. Seg\u00fan las estad\u00edsticas, calculadas en funci\u00f3n de la calidad, los lingotes desechados debido a inclusiones de escoria representan entre 10% y 25% del total de residuos.<\/p>\n

Las inclusiones de escoria suelen deberse a la escoria, a fragmentos del revestimiento y a \u00f3xidos de mayor tama\u00f1o que caen en el lingote junto con el metal l\u00edquido durante el proceso de fundici\u00f3n.<\/p>\n

\"Inclusiones<\/p>\n

C\u00f3mo evitar la inclusi\u00f3n de escoria<\/strong><\/p>\n

1) Refinar con cuidado, respetando el tiempo de reposo, y filtrar con tela de vidrio en la placa de flujo o en un embudo.
\n2) Acortar el canal de transferencia<\/a> Aumentar la distancia tanto como sea posible, establecer unas buenas condiciones de transferencia y cerrar todas las ca\u00eddas expuestas en el canal de colada, la placa de flujo y el embudo para evitar fluctuaciones en el nivel del metal fundido. Lo m\u00e1s recomendable es utilizar el mismo nivel de colada siempre que sea posible.
\n3) Hornear bien las herramientas de transferencia, aumentar la temperatura de fundici\u00f3n seg\u00fan corresponda, eliminar cuidadosamente la escoria durante el proceso de fundici\u00f3n y tratar con cuidado la bandeja del horno y el resto de herramientas tras la fundici\u00f3n.
\n4) Utiliza una carga limpia.<\/p>","protected":false},"excerpt":{"rendered":"

The slag mixed into the ingot or other non-metallic impurities falling into the ingot are called non-metallic inclusions. The fracture features are black strips or…<\/p>","protected":false},"author":1,"featured_media":5962,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5934","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nSlag Inclusions in Aluminum Alloy Ingot Casting Process<\/title>\n<meta name=\"description\" content=\"The slag mixed into the ingot or impurities falling into the ingot are called salg inclusions. 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