{"id":8507,"date":"2021-04-23T05:42:07","date_gmt":"2021-04-23T05:42:07","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8507"},"modified":"2021-04-23T05:42:07","modified_gmt":"2021-04-23T05:42:07","slug":"aluminum-degassing-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-degassing-refining\/","title":{"rendered":"Desgasificaci\u00f3n y refinado del aluminio"},"content":{"rendered":"

En el proceso de refinado y desgasificaci\u00f3n de aleaciones de aluminio y metales no ferrosos, suele ocurrir que se generen inclusiones no met\u00e1licas, como \u00f3xidos, y que el hidr\u00f3geno se mezcle con el metal fundido. Por lo tanto, solo cuando las inclusiones no met\u00e1licas se separan o eliminan del metal fundido antes del procesamiento se puede obtener un producto final de alta calidad. Adem\u00e1s, al introducir en el molde metal fundido que contiene un gas disuelto en estado s\u00f3lido compuesto principalmente por hidr\u00f3geno, pueden generarse peque\u00f1as cavidades denominadas \u201cporos\u201d tras la solidificaci\u00f3n, lo que da lugar a una disminuci\u00f3n de la densidad del producto acabado. Asimismo, la presencia de inclusiones adheridas al gas puede provocar diversos defectos en el producto tras el procesamiento.<\/p>\n

En vista de lo anterior, antes de la operaci\u00f3n de fundici\u00f3n de metales no ferrosos de aleaci\u00f3n de aluminio, se lleva a cabo un proceso de desgasificaci\u00f3n del material fundido para mejorar la calidad del metal fundido. En esta operaci\u00f3n de refinado por desgasificaci\u00f3n, se inyecta en el metal fundido una gran cantidad de peque\u00f1as burbujas de gas inerte, como el arg\u00f3n o el nitr\u00f3geno, de modo que el gas disuelto en estado s\u00f3lido y las inclusiones no met\u00e1licas quedan atrapadas o capturadas por las burbujas de gas inerte y flotan para su eliminaci\u00f3n.<\/p>\n

\"Unidades<\/p>\n

El unidad de desgasificaci\u00f3n<\/a> El dispositivo de desgasificaci\u00f3n para la colada continua de aluminio se sit\u00faa entre el horno de mantenimiento y la m\u00e1quina de colada, a lo largo de la l\u00ednea de procesamiento del metal fundido. El dispositivo de desgasificaci\u00f3n recibe metal fundido de forma continua a trav\u00e9s de la entrada. La abertura superior del recipiente de desgasificaci\u00f3n est\u00e1 cubierta por una tapa y, en el lado aguas abajo, la pared divisoria se extiende hacia abajo en una direcci\u00f3n transversal al flujo del fluido. Se utiliza para evitar que los metales, incluidos los \u00f3xidos y otros objetos flotantes, pasen al proceso de tratamiento posterior.<\/p>\n

El tiempo de permanencia del metal fundido en la c\u00e1mara de procesamiento situada aguas arriba de la partici\u00f3n puede prolongar la duraci\u00f3n de la operaci\u00f3n de desgasificaci\u00f3n. El dispositivo giratorio de difusi\u00f3n de gas se introduce a trav\u00e9s del orificio de la tapa y se sit\u00faa en el metal fundido dentro del recipiente de desgasificaci\u00f3n. La parte inferior del dispositivo de difusi\u00f3n de gas se encuentra inmersa en el metal fundido y, al mismo tiempo, situada en la parte inferior. Mediante el movimiento giratorio, el gas inerte sale expulsado por la parte inferior del dispositivo de difusi\u00f3n de gas, y el gas inerte en forma de burbujas finas se difunde al mismo tiempo en el metal fundido.<\/p>\n

Adem\u00e1s del proceso de refinado por desgasificaci\u00f3n del aluminio descrito anteriormente, se necesita un quemador para calentar el metal que queda en el recipiente. De lo contrario, el metal que queda en el recipiente comienza a solidificarse, lo que dificulta que se funda correctamente con el metal reci\u00e9n introducido. Adem\u00e1s, cuando es necesario realizar trabajos de mantenimiento en el recipiente de desgasificaci\u00f3n, el funcionamiento del quemador es esencial para eliminar el metal fundido que queda en el recipiente.<\/p>","protected":false},"excerpt":{"rendered":"

In the degassing refining process of aluminum alloy and non-ferrous metals, it often happens that non-metallic inclusions such as oxides are generated and hydrogen is…<\/p>","protected":false},"author":1,"featured_media":8509,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Degassing Refining with Degassing Unit<\/title>\n<meta name=\"description\" content=\"Before the casting operation of aluminum alloy metals, the degassing refining process to improve the quality of the molten metal.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/es\/aluminum-degassing-refining\/\" \/>\n<meta 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