agente refinador<\/a> en la aleaci\u00f3n de aluminio. El cuerpo de la burbuja puede deberse a una reacci\u00f3n qu\u00edmica interna del aluminio fundido, o bien a que parte del agente desgasificador refinado se a\u00f1ade directamente, aprovechando el principio de la presi\u00f3n parcial para que el hidr\u00f3geno se disuelva en el aluminio; las part\u00edculas se difunden hacia la burbuja. En ese momento, la presi\u00f3n parcial de la burbuja es cero y su densidad es menor. Cuando la burbuja asciende a la superficie del aluminio fundido, estalla y el hidr\u00f3geno se escapa a la atm\u00f3sfera, logrando finalmente el objetivo de eliminar el hidr\u00f3geno. El principio de la eliminaci\u00f3n de escorias es el mismo que el de la desgasificaci\u00f3n: \u201cla eliminaci\u00f3n de escorias es la base de la desgasificaci\u00f3n\u201d.<\/p>\n![\"Refinado](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Refining-of-Molten-Aluminum.jpg\")
<\/p>\n
Aunque la densidad de la al\u00famina s\u00f3lida es similar a la del aluminio fundido, tarda bastante tiempo en llegar al fondo del crisol tras introducirse en el aluminio fundido. Sin embargo, la pel\u00edcula de \u00f3xido que se forma tras la oxidaci\u00f3n del aluminio fundido presenta \u00fanicamente un gran n\u00famero de poros de gran di\u00e1metro que est\u00e1n en contacto estrecho con el aluminio fundido. La superficie es amplia y la adsorci\u00f3n tiende a hacer que flote hacia arriba. Por lo tanto, la diferencia de densidad entre esta pel\u00edcula de \u00f3xido y el aluminio fundido es peque\u00f1a. Cuando se mezcla con el fundido, la velocidad de flotaci\u00f3n y hundimiento es muy lenta, y resulta dif\u00edcil separarla del aluminio fundido, lo que da lugar a poros e inclusiones en la pieza fundida. Por lo tanto, la clave para el trasvase del aluminio fundido es minimizar la mezcla y reducir al m\u00ednimo el contacto entre el aluminio fundido y el aire.<\/p>\n
El m\u00e9todo m\u00e1s utilizado para eliminar los poros finos en las piezas fundidas de aleaci\u00f3n de aluminio es el refinado con fundente del aluminio fundido. El fundente m\u00e1s utilizado consiste en desgasificar con sales de cloruro y cloruros durante el proceso de fusi\u00f3n. Cuando se utilicen sales de cloruro y agentes desgasificantes a base de cloruro para la desgasificaci\u00f3n, se debe emplear una campana de vac\u00edo para presionar el agente desgasificante hasta el fondo del crisol a 100 m y moverlo a una velocidad constante. Para evitar que el aluminio l\u00edquido salpique en grandes cantidades, el agente desgasificante puede a\u00f1adirse por lotes; una vez completadas la desgasificaci\u00f3n y la formaci\u00f3n de escoria, se deja reposar durante un tiempo determinado. En el caso de otros fundentes met\u00e1licos, la operaci\u00f3n de refinado es la misma.<\/p>","protected":false},"excerpt":{"rendered":"
Refining of molten aluminum refers to the removal of gases and inclusions in the aluminum alloy. Because the two processes of aluminum alloy smelting and…<\/p>","protected":false},"author":1,"featured_media":3940,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4335,4333,122,1708,4290,4289,4331,4336,4342,4344,4337,4343,4338,4332,2218,4334,4341,4339,4376,4375,4340,4374,123,4330,4328,4329],"class_list":["post-3939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminium-casting-flux","tag-aluminium-degassing-tablets","tag-aluminum-casting-flux","tag-aluminum-casting-foundry-flux","tag-aluminum-degassing-flux","tag-aluminum-degassing-tablets","tag-aluminum-flux","tag-aluminum-flux-powder","tag-casting-flux","tag-coverall-flux","tag-degas-tablets","tag-degassing-agent","tag-degassing-tablets","tag-flux-aluminium","tag-flux-for-aluminum-melting","tag-flux-for-melting-aluminum-cans","tag-flux-melting","tag-foundry-flux","tag-how-does-de-gas-tablets-work","tag-how-does-degas-tablets-work","tag-low-temperature-flux","tag-molten-flux","tag-refining-flux","tag-tundish-covering-compound","tag-tundish-covering-powder","tag-tundish-powder"],"yoast_head":"\n
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