{"id":9754,"date":"2021-07-30T08:00:25","date_gmt":"2021-07-30T08:00:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9754"},"modified":"2021-07-30T08:00:25","modified_gmt":"2021-07-30T08:00:25","slug":"casting-nozzle-clogging","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/casting-nozzle-clogging\/","title":{"rendered":"Obstrucci\u00f3n de la boquilla de colada"},"content":{"rendered":"<p>La boquilla de colada es la \u201cparte de la garganta\u201d de la l\u00ednea de colada continua y laminaci\u00f3n a la que se env\u00eda el aluminio fundido, y su funci\u00f3n es muy importante. Cuando se producen problemas de obstrucci\u00f3n en la boquilla de colada de aluminio, la m\u00e1quina de colada y laminaci\u00f3n solo puede detenerse para sustituirla, lo que provoca una interrupci\u00f3n de la producci\u00f3n, un desperdicio de mano de obra y recursos materiales, y una reducci\u00f3n de la eficiencia productiva.<\/p>\n<p>Con el desarrollo y el avance de la ciencia y la tecnolog\u00eda, se han logrado avances notables en el tratamiento del aluminio fundido. En el proceso de producci\u00f3n, se llevan a cabo una serie de tratamientos de purificaci\u00f3n y filtraci\u00f3n del aluminio electrol\u00edtico l\u00edquido para eliminar las inclusiones presentes en \u00e9l, lo que permite obtener un aluminio l\u00edquido m\u00e1s limpio. En cierta medida, esto garantiza que el metal fundido pase sin problemas por la boquilla. Sin embargo, la obstrucci\u00f3n de la boquilla de colada sigue siendo el principal problema al que se enfrenta el proceso de producci\u00f3n de aleaciones de aluminio.<\/p>\n<p>Mediante la combinaci\u00f3n de la pr\u00e1ctica de producci\u00f3n in situ y el an\u00e1lisis te\u00f3rico, se estudian la causa y el mecanismo de formaci\u00f3n de la obstrucci\u00f3n de la boquilla de colada en el proceso de producci\u00f3n de aleaciones de aluminio, lo que sirve de orientaci\u00f3n para la optimizaci\u00f3n del proceso y la producci\u00f3n de estas aleaciones.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9766\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/07\/Aluminum-Casting-Tip-and-Nozzle.jpg\" alt=\"Punta y boquilla para fundici\u00f3n de aluminio\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/07\/Aluminum-Casting-Tip-and-Nozzle.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/07\/Aluminum-Casting-Tip-and-Nozzle-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>En el <a href=\"http:\/\/www.alalloycasting.com\/es\/nozzle-cavity\/\">cavidad de la boquilla<\/a>, no solo el fen\u00f3meno de las escorias de reacci\u00f3n, sino tambi\u00e9n la deposici\u00f3n de inclusiones finas en la masa fundida. Cuando la velocidad de colada alcanza los 7 m\/min, el campo de flujo en el interior de la cavidad de la boquilla se vuelve m\u00e1s complejo a medida que aumenta dicha velocidad, y las part\u00edculas de inclusi\u00f3n presentes en la masa fundida se ven obligadas a realizar movimientos f\u00edsicos y a chocar entre s\u00ed. El interior del material de la boquilla est\u00e1 compuesto por fibras entrelazadas con numerosos poros. La reacci\u00f3n da lugar a una superficie irregular de la boquilla de colada y a la presencia de sus propios poros, de modo que la superficie de la boquilla de colada presenta una mayor superficie espec\u00edfica y una mayor energ\u00eda de adsorci\u00f3n, y tiene una gran capacidad para interceptar las inclusiones s\u00f3lidas no met\u00e1licas presentes en el metal fundido. Al mismo tiempo, las min\u00fasculas part\u00edculas de TiB presentes en el agente de refinado a\u00f1adido durante el proceso de fundici\u00f3n ser\u00e1n interceptadas por las inclusiones de la boquilla de fundici\u00f3n. Esto no solo afectar\u00e1 al refinamiento del grano de la placa de aluminio fundida final, sino que tambi\u00e9n agravar\u00e1 la obstrucci\u00f3n de la boquilla de fundici\u00f3n.<\/p>\n<p>El aumento de la rugosidad y de la superficie espec\u00edfica de la cavidad, provocado por la reacci\u00f3n que tiene lugar en el interior de la misma y por la formaci\u00f3n de escoria, favorece la solidificaci\u00f3n de la aleaci\u00f3n de aluminio l\u00edquida en la superficie interior de la cavidad de la boquilla, lo que a su vez provoca que dicha cavidad se estreche a\u00fan m\u00e1s. Al mismo tiempo, debido al fen\u00f3meno de solidificaci\u00f3n de la aleaci\u00f3n de aluminio, aumenta la resistencia de uni\u00f3n entre las inclusiones, as\u00ed como entre estas y el material de la boquilla. El flujo a alta velocidad del fluido de aleaci\u00f3n de aluminio dificulta que este act\u00fae eficazmente sobre la formaci\u00f3n de escoria en el desgaste de la cavidad de la boquilla de fundici\u00f3n, lo que hace que la boquilla de fundici\u00f3n sea propensa a obstruirse durante el proceso de fundici\u00f3n y laminaci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"<p>The casting nozzle is the &#8220;throat part&#8221; of the continuous casting and rolling mill that the aluminum melt is sent to, and its role is&hellip;<\/p>","protected":false},"author":1,"featured_media":9768,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9754","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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