{"id":5059,"date":"2020-09-25T03:46:15","date_gmt":"2020-09-25T03:46:15","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5059"},"modified":"2020-09-25T03:46:15","modified_gmt":"2020-09-25T03:46:15","slug":"degassing-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/degassing-method\/","title":{"rendered":"M\u00e9todo de desgasificaci\u00f3n"},"content":{"rendered":"<p>El m\u00e9todo b\u00e1sico de desgasificaci\u00f3n es el de flotaci\u00f3n. El principio consiste en introducir gas o sustancias generadoras de gas en el aluminio fundido para generar burbujas. Seg\u00fan el principio de la diferencia de presi\u00f3n parcial, el hidr\u00f3geno disuelto en el aluminio fundido se ve sometido a la acci\u00f3n de dicha diferencia de presi\u00f3n. sigue difundi\u00e9ndose hacia el interior de la burbuja; cuando esta asciende a la superficie del l\u00edquido, el hidr\u00f3geno difundido en su interior sale a la atm\u00f3sfera junto con la burbuja. Al mismo tiempo, la superficie de la burbuja puede adsorber autom\u00e1ticamente las inclusiones, que flotan hasta la superficie del l\u00edquido para formar escoria.<\/p>\n<p>Como primer proceso del tratamiento del aluminio, si la palanquilla presenta defectos inherentes (como inclusiones, etc.) causados por la fusi\u00f3n, por muy avanzada que sea la tecnolog\u00eda o el equipamiento, no podr\u00e1 utilizarse en la serie de procesos de transformaci\u00f3n posteriores (como el laminado, extrusi\u00f3n, tratamiento t\u00e9rmico, tratamiento superficial, etc.) para subsanar este defecto cong\u00e9nito, por lo que resulta dif\u00edcil garantizar la calidad y el rendimiento de los productos de aluminio. Por lo tanto, para aprovechar al m\u00e1ximo el potencial del material y sacar el m\u00e1ximo partido a sus prestaciones, es necesario resolver primero los aspectos relacionados con la producci\u00f3n y el control de calidad de la plancha fundida.<\/p>\n<p>La principal fuente de hidr\u00f3geno en la masa fundida de la aleaci\u00f3n de aluminio es que, durante la fusi\u00f3n de la aleaci\u00f3n, la humedad presente en la atm\u00f3sfera y en la superficie de la materia prima penetra en la masa fundida a trav\u00e9s de reacciones metal\u00fargicas, lo que provoca que esta absorba hidr\u00f3geno. El hidr\u00f3geno se presenta de dos formas en el aluminio fundido. Aproximadamente el 90% del hidr\u00f3geno se disuelve en el fundido en forma de \u00e1tomos intersticiales. Aproximadamente el 10%, que constituye una peque\u00f1a cantidad de hidr\u00f3geno, se adsorbe en forma de burbujas en la superficie o en los huecos de las inclusiones, formando burbujas de hidr\u00f3geno con un radio de curvatura negativo.<\/p>\n<p>La presencia de hidr\u00f3geno afectar\u00e1 negativamente al rendimiento de las aleaciones de aluminio. El hidr\u00f3geno presente en el aluminio y sus aleaciones producir\u00e1 poros de distintos tama\u00f1os en la palanquilla de fundici\u00f3n, destruir\u00e1 la continuidad del material met\u00e1lico y reducir\u00e1 la secci\u00f3n transversal efectiva del componente. La concentraci\u00f3n de tensiones alrededor de los poros reducir\u00e1 considerablemente el rendimiento de procesamiento de la palanquilla fundida; en los productos semiacabados, se producir\u00e1n defectos de delaminaci\u00f3n causados por el hidr\u00f3geno y un segundo tipo de fragilizaci\u00f3n por hidr\u00f3geno, lo que aumentar\u00e1 la fragilidad de la aleaci\u00f3n durante el forjado y el laminado. El hidr\u00f3geno en estado sobresaturado y en estado combinado es una causa importante de la porosidad secundaria y la formaci\u00f3n de ampollas superficiales en la plancha fundida durante el proceso de homogeneizaci\u00f3n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5098\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Degassing-Method-1.jpg\" alt=\"M\u00e9todo de desgasificaci\u00f3n\" width=\"400\" height=\"320\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Degassing-Method-1.jpg 400w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Degassing-Method-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>AdTech ofrece <a href=\"http:\/\/www.alalloycasting.com\/es\/online-degassing-system\/\">sistema de desgasificaci\u00f3n en l\u00ednea<\/a> En el caso del aluminio fundido, la unidad de desgasificaci\u00f3n utiliza el m\u00e9todo de desgasificaci\u00f3n por flotaci\u00f3n. El gas inerte se inyecta en el fundido a trav\u00e9s del rotor, que lo fragmenta en min\u00fasculas burbujas dispersas de manera uniforme. Las min\u00fasculas burbujas ascienden hasta la superficie del fundido, y el hidr\u00f3geno y las impurezas son absorbidos durante el proceso de ascenso de las mismas.<\/p>","protected":false},"excerpt":{"rendered":"<p>The basic degassing method is the floatation method. The principle is to pass gas or gas-generating substances into the aluminum melt to generate bubbles. According&hellip;<\/p>","protected":false},"author":1,"featured_media":5099,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5059","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 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Degassing Method in Aluminum Melt | Aluminum Degassing<\/title>\n<meta name=\"description\" content=\"The basic degassing method is the floatation method. 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