{"id":10095,"date":"2021-08-27T06:30:29","date_gmt":"2021-08-27T06:30:29","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10095"},"modified":"2021-08-26T06:37:55","modified_gmt":"2021-08-26T06:37:55","slug":"online-rotary-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/online-rotary-degassing\/","title":{"rendered":"Desgasificaci\u00f3n rotativa en l\u00ednea"},"content":{"rendered":"<p>La desgasificaci\u00f3n rotativa en l\u00ednea es necesaria en toda la producci\u00f3n de metal fundido. El m\u00e9todo de desgasificaci\u00f3n rotativa en l\u00ednea utiliza un impulsor giratorio de alta velocidad para transformar el gas purificado en burbujas peque\u00f1as y distribuidas de manera uniforme. Estas peque\u00f1as burbujas de gas ascienden lentamente hacia la superficie del l\u00edquido, lo que alarga el tiempo de reacci\u00f3n.<\/p>\n<p>A la temperatura de fusi\u00f3n del aluminio (700 \u00b0C y m\u00e1s), el vapor de agua se descompone en hidr\u00f3geno y ox\u00edgeno. El ox\u00edgeno reacciona con el aluminio l\u00edquido para formar al\u00famina, y el hidr\u00f3geno (H) se descompone en \u00e1tomos de hidr\u00f3geno (H) y se disuelve en el aluminio l\u00edquido. Por lo tanto, es inevitable que se disuelva hidr\u00f3geno en el aluminio fundido, y la cantidad que se disuelve depende de la humedad del aire. A continuaci\u00f3n, dado que la solubilidad del hidr\u00f3geno en el aluminio fundido es mucho mayor que en el aluminio s\u00f3lido, se formar\u00e1n poros en los l\u00edmites de los granos cristalinos durante la ca\u00edda brusca de la temperatura de solidificaci\u00f3n del hidr\u00f3geno disuelto. Los poros en el metal pueden mermar su resistencia. Para aumentar la resistencia del metal, es necesario plantearse la eliminaci\u00f3n de la mayor parte del gas cuando el metal se encuentra en estado l\u00edquido.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9805\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/08\/Rotating-Rotor-Degassing-Method.jpg\" alt=\"M\u00e9todo de desgasificaci\u00f3n con rotor giratorio\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/08\/Rotating-Rotor-Degassing-Method.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/08\/Rotating-Rotor-Degassing-Method-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Se puede conseguir una velocidad de desgasificaci\u00f3n m\u00e1s r\u00e1pida mediante la tecnolog\u00eda de desgasificaci\u00f3n rotativa en l\u00ednea. El eje de grafito y el cabezal del impulsor se sumergen en el ba\u00f1o de metal fundido, y las burbujas grandes se fragmentan en burbujas peque\u00f1as y uniformes.<\/p>\n<p>La reducci\u00f3n del tama\u00f1o de las burbujas del gas purificado aumenta significativamente la superficie espec\u00edfica y el tiempo de permanencia del gas purificado. El efecto de agitaci\u00f3n que produce el cabezal del impulsor hace que el gas purificado se distribuya de forma m\u00e1s uniforme, de modo que este pueda entrar en contacto plenamente con el hidr\u00f3geno presente en el aluminio fundido, lo que favorece la eliminaci\u00f3n del hidr\u00f3geno.<\/p>\n<p>Aunque el m\u00e9todo de desgasificaci\u00f3n rotativa en l\u00ednea resulta eficaz para mejorar la eficiencia de la eliminaci\u00f3n de hidr\u00f3geno, resulta dif\u00edcil determinar su papel en la eliminaci\u00f3n de \u00f3xidos. Diversos estudios han demostrado que las peque\u00f1as burbujas de arg\u00f3n o nitr\u00f3geno generadas en el m\u00e9todo de desgasificaci\u00f3n rotativa pueden hacer que el \u00f3xido flote hasta la superficie del l\u00edquido.<\/p>\n<p>Si se a\u00f1ade una peque\u00f1a cantidad de cloro al gas purificado, se puede mejorar la eficacia de la eliminaci\u00f3n de \u00f3xidos. Dado que el cloro puede modificar la tensi\u00f3n superficial del aluminio fundido, resulta m\u00e1s f\u00e1cil que los \u00f3xidos se adhieran a las burbujas del gas purificado.<\/p>\n<p>El <a href=\"http:\/\/www.alalloycasting.com\/es\/rotating-degassing\/\">desgasificaci\u00f3n por rotaci\u00f3n<\/a> Este m\u00e9todo puede aumentar la cantidad de escoria en la superficie del aluminio fundido, lo que se debe, en parte, a que las inclusiones y las part\u00edculas no met\u00e1licas presentes en el aluminio fundido flotan hasta la superficie.<\/p>","protected":false},"excerpt":{"rendered":"<p>Online rotary degassing is necessary for all molten metal production. The online rotary degassing method uses a high-speed rotating impeller to transform the purified gas&hellip;<\/p>","protected":false},"author":1,"featured_media":10096,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[688,12510],"class_list":["post-10095","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-molten-aluminum-purification","tag-online-rotary-degassing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Online Rotary Degassing for Molten Aluminum Purification<\/title>\n<meta name=\"description\" content=\"The online rotary degassing method uses a high-speed rotating impeller to transform the purified gas into small distributed bubbles.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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