{"id":6039,"date":"2020-10-25T04:36:49","date_gmt":"2020-10-25T04:36:49","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6039"},"modified":"2020-10-25T04:36:49","modified_gmt":"2020-10-25T04:36:49","slug":"aluminium-purification-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminium-purification-treatment\/","title":{"rendered":"Tratamiento de purificaci\u00f3n del aluminio"},"content":{"rendered":"

El tratamiento de purificaci\u00f3n del aluminio tiene como objetivo obtener una masa fundida limpia, pura y homog\u00e9nea. El contenido de hidr\u00f3geno y de escoria de la masa fundida afectar\u00e1 a la calidad del lingote. Por lo tanto, tomamos las siguientes medidas para mejorar la calidad de la fundici\u00f3n:<\/p>\n

\u2460 Durante el proceso de fundici\u00f3n, mantenga la temperatura del metal fundido entre 720 \u2103 y 760 \u2103, y la temperatura del horno \u2264 1150 \u2103. Cuando la carga se haya fundido, se mide la temperatura del metal fundido y se lleva a cabo la escorificaci\u00f3n a tiempo, dentro del rango de control de la temperatura del metal fundido. Evite que la masa fundida obstruya la radiaci\u00f3n t\u00e9rmica normal debido a la escoria y provoque un sobrecalentamiento local.<\/p>\n

\u2461Espolvorea el fundente de manera uniforme en el horno antes de la escorificaci\u00f3n. La escorificaci\u00f3n debe ser estable y no se debe empujar la masa fundida hacia las olas. Tras la escorificaci\u00f3n, no debe verse ninguna espuma de gran tama\u00f1o en la superficie. Una vez finalizada la escorificaci\u00f3n, se a\u00f1ade el lingote de Mg. La temperatura del lingote de magnesio se mantiene entre 730 \u2103 y 750 \u2103 para reducir el riesgo de oxidaci\u00f3n y absorci\u00f3n de gases por parte del material fundido.<\/p>\n

\u2462A\u00f1adir fundente de recubrimiento al introducir el lingote de magnesio para evitar que este se queme. Una vez a\u00f1adido el lingote de magnesio, hay que dejarlo reposar durante 30 minutos. Una vez finalizada la incubaci\u00f3n, hay que agitar la masa fundida durante 5 a 10 minutos. Cuando se a\u00f1ada un lingote de magnesio de \u2265 50 kg, hay que agitarla una vez m\u00e1s. El intervalo entre dos agitaciones no debe ser inferior a 15 minutos. Aseg\u00farese de obtener una masa fundida homog\u00e9nea.<\/p>\n

Muestreo<\/strong><\/p>\n

El muestreo in situ debe ser representativo; de lo contrario, el lingote se desechar\u00e1 y se devolver\u00e1 al horno debido a la presencia de componentes no conformes. Al realizar el muestreo, la cuchara de muestreo debe estar completamente seca, y el cepillo del molde de muestreo debe estar recubierto uniformemente con una capa de nitruro de boro. Metal antes del muestreo. El muestreo se lleva a cabo despu\u00e9s de que la cuchara de muestreo haya sido limpiada por la masa fundida, y la posici\u00f3n de muestreo es la profundidad media de la masa fundida en la zona sim\u00e9trica de 1\/4 en la direcci\u00f3n longitudinal del horno.<\/p>\n

\"Tratamiento<\/p>\n

Tratamiento de purificaci\u00f3n del aluminio<\/strong><\/p>\n

AdTech dispositivo de desgasificaci\u00f3n<\/a>El rotor se utiliza para la desgasificaci\u00f3n y la formaci\u00f3n de escoria, y los rotores dobles se emplean para la desgasificaci\u00f3n. El rotor utiliza dos tipos de gases: arg\u00f3n y nitr\u00f3geno. Durante el proceso de colada, es necesario comprobar si los poros del rotor est\u00e1n desobstruidos por la presi\u00f3n del gas. En particular, es necesario comprobar si el cierre herm\u00e9tico del dispositivo de desgasificaci\u00f3n funciona correctamente. Cualquier da\u00f1o provocar\u00e1 la entrada de una gran cantidad de aire en la cavidad, lo que causar\u00e1 la oxidaci\u00f3n y la formaci\u00f3n de escoria en la masa fundida.<\/p>\n

El CFF se utiliza para filtrar el aluminio fundido, y hay que tener en cuenta los dos puntos siguientes:<\/p>\n

Precalentar la caja del filtro y la placa filtrante de manera uniforme para que alcancen una temperatura cercana a la del aluminio fundido; la temperatura de precalentamiento de la placa filtrante no debe ser inferior a 260 \u00b0C. El precalentamiento para eliminar el agua adsorbida ayuda a abrir al instante el tama\u00f1o inicial de los poros del filtro y evita que la expansi\u00f3n y contracci\u00f3n t\u00e9rmicas provoquen el bloqueo de la placa filtrante. Para el precalentamiento se puede utilizar calefacci\u00f3n el\u00e9ctrica o de gas. El tiempo normal de calentamiento es de 15 a 30 minutos.<\/p>\n

Durante el proceso normal de filtrado, evite golpear o agitar la placa filtrante. Al mismo tiempo, el canal de vertido debe estar lleno de aluminio fundido para evitar perturbaciones excesivas o m\u00ednimas en el aluminio fundido.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminium Purification Treatment is to obtain a clean, pure and homogeneous melt. The hydrogen content and slag content of the melt will affect the quality…<\/p>","protected":false},"author":1,"featured_media":6041,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6039","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminium Purification Treatment by Online Degassing Unit<\/title>\n<meta name=\"description\" content=\"Aluminium Purification Treatment: AdTech degassing device is used for degassing and slagging, and double rotors are used for degassing.\" \/>\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\/aluminium-purification-treatment\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" 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