{"id":8627,"date":"2021-04-29T07:46:17","date_gmt":"2021-04-29T07:46:17","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8627"},"modified":"2021-04-29T07:46:17","modified_gmt":"2021-04-29T07:46:17","slug":"degassing-process-in-aluminium","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/degassing-process-in-aluminium\/","title":{"rendered":"Proceso de desgasificaci\u00f3n del aluminio"},"content":{"rendered":"

Se sabe que los metales fundidos, como el aluminio, contienen altos niveles de fragmentos de \u00f3xido y\/o nitruro, lo que tiene un efecto negativo en la solidificaci\u00f3n de ciertas aleaciones. La forma fundida o licuada del aluminio tambi\u00e9n favorece la formaci\u00f3n y absorci\u00f3n de hidr\u00f3geno en el aluminio fundido. El hidr\u00f3geno se precipita en forma de poros durante la solidificaci\u00f3n de la aleaci\u00f3n de aluminio y resulta perjudicial para las propiedades mec\u00e1nicas de la aleaci\u00f3n s\u00f3lida. La desgasificaci\u00f3n es un m\u00e9todo eficaz para reducir la porosidad causada por el hidr\u00f3geno. El proceso de desgasificaci\u00f3n del aluminio es esencial para eliminar el hidr\u00f3geno disuelto y los componentes no met\u00e1licos del metal fundido antes de la fundici\u00f3n, con el fin de lograr la mejor calidad.<\/p>\n

Se introduce en el aluminio fundido una mezcla de gas inerte (como el arg\u00f3n o el nitr\u00f3geno) y un gas reactivo (como el cloro o el fluoruro de hidr\u00f3geno y azufre) para capturar el hidr\u00f3geno y humedecer las impurezas s\u00f3lidas. La mezcla de gases asciende hacia la superficie junto con el hidr\u00f3geno y las impurezas de \u00f3xido.<\/p>\n

El aluminio fundido tambi\u00e9n puede requerir un tratamiento de desgasificaci\u00f3n con fundente para introducir agentes de refinado en el metal fundido. La desgasificaci\u00f3n con fundente es un proceso en el que se introducen mezclas de sales en polvo o granuladas, como cloruro o fluoruro, en el aluminio fundido mediante un gas portador, como el nitr\u00f3geno o el arg\u00f3n. El fundente salino puede introducirse mediante equipo de desgasificaci\u00f3n rotativo<\/a>.<\/p>\n

\"Proceso<\/p>\n

El dispositivo de desgasificaci\u00f3n rotativo incluye un eje hueco central acoplado al rotor, que se introduce en el ba\u00f1o de aluminio fundido y gira de tal forma que el fundente salino se desplaza a lo largo del eje hueco y se dispersa en el aluminio fundido a trav\u00e9s de los orificios del rotor. El l\u00edquido de aleaci\u00f3n de aluminio entra continuamente en el dispositivo de desgasificaci\u00f3n, y el nitr\u00f3geno se inyecta de forma continua. Mediante el proceso de desgasificaci\u00f3n del aluminio, se logra el objetivo de purificar el l\u00edquido de aleaci\u00f3n de aluminio.<\/p>\n

El dispositivo de desgasificaci\u00f3n rotativo aprovecha el nitr\u00f3geno inyectado en la masa fundida de aleaci\u00f3n de aluminio para que sea triturado por el rotor giratorio de nitruro de silicio, lo que genera un gran n\u00famero de burbujas de difusi\u00f3n, de modo que la aleaci\u00f3n de aluminio l\u00edquida y el nitr\u00f3geno entren en contacto completo dentro del dep\u00f3sito de procesamiento.<\/p>\n

Seg\u00fan el principio de la diferencia de presi\u00f3n y la adsorci\u00f3n superficial, las burbujas absorben el hidr\u00f3geno presente en el metal fundido y adsorben la escoria oxidada (cuanto mayor es la colisi\u00f3n, menor es la interceptaci\u00f3n radial). La escoria se forma en la superficie del metal fundido. El metal fundido de aleaci\u00f3n de aluminio fluye desde la salida del dispositivo de desgasificaci\u00f3n (situado en la parte inferior del recipiente) hasta la m\u00e1quina de colada.<\/p>","protected":false},"excerpt":{"rendered":"

It is known that molten metals such as aluminum include high levels of oxide and\/or nitride fragments, which have a negative effect on the solidification…<\/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-8627","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nDegassing Process In Aluminum,Rotary Degassing Device<\/title>\n<meta name=\"description\" content=\"The degassing process in aluminum is essential to remove dissolved hydrogen and non-metallic content from molten metal before casting.\" \/>\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\/degassing-process-in-aluminium\/\" \/>\n<meta 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