{"id":12444,"date":"2022-01-23T08:01:15","date_gmt":"2022-01-23T08:01:15","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12444"},"modified":"2022-01-21T08:10:31","modified_gmt":"2022-01-21T08:10:31","slug":"%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b0-%d0%b4%d0%b5%d0%b3%d0%b0%d0%b7%d0%b0%d1%86%d0%b8%d0%b8-%d0%b0%d0%bb%d1%8e%d0%bc%d0%b8%d0%bd%d0%b8%d1%8f","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b0-%d0%b4%d0%b5%d0%b3%d0%b0%d0%b7%d0%b0%d1%86%d0%b8%d0%b8-%d0%b0%d0%bb%d1%8e%d0%bc%d0%b8%d0%bd%d0%b8%d1%8f\/","title":{"rendered":"Sistema de desgaseifica\u00e7\u00e3o de alum\u00ednio"},"content":{"rendered":"

O sistema de desgaseifica\u00e7\u00e3o do alum\u00ednio utiliza arg\u00f4nio ou nitrog\u00eanio como meio de refino, removendo o hidrog\u00eanio e as impurezas do alum\u00ednio bruto; o rotor \u00e9 imerso no alum\u00ednio fundido, injetando o g\u00e1s de refino no alum\u00ednio fundido por meio do rotor de alta velocidade; em seguida, formam-se pequenas bolhas que se distribuem uniformemente no alum\u00ednio fundido. devido ao contato de alta velocidade entre o rotor e o alum\u00ednio l\u00edquido, como a press\u00e3o parcial do hidrog\u00eanio na bolha \u00e9 igual a zero, e a press\u00e3o parcial do hidrog\u00eanio no alum\u00ednio fundido \u00e9 alta, o hidrog\u00eanio do alum\u00ednio l\u00edquido se espalhar\u00e1 gradualmente para dentro da bolha; ao mesmo tempo, o alum\u00ednio l\u00edquido, bem como as impurezas met\u00e1licas e n\u00e3o met\u00e1licas, ser\u00e3o absorvidos pela superf\u00edcie das bolhas. As bolhas que cont\u00eam impurezas sobem \u00e0 superf\u00edcie, removendo o hidrog\u00eanio e as impurezas do alum\u00ednio l\u00edquido.<\/p>\n

Rotor do sistema desgaseifica\u00e7\u00e3o do alum\u00ednio<\/a>, acionado por um motor, desce at\u00e9 o alum\u00ednio l\u00edquido e gira dentro dele; ao mesmo tempo, s\u00e3o injetados nele nitrog\u00eanio de alta pureza (ou arg\u00f4nio) e um agente refinador, ap\u00f3s o que ele pode desempenhar as fun\u00e7\u00f5es de desgaseifica\u00e7\u00e3o, remo\u00e7\u00e3o de esc\u00f3ria e refino.<\/p>\n

Como na massa fundida de alum\u00ednio e ligas de alum\u00ednio h\u00e1 uma grande quantidade de hidrog\u00eanio, bem como impurezas met\u00e1licas e n\u00e3o met\u00e1licas, se essas impurezas nocivas n\u00e3o puderem ser removidas antes da fundi\u00e7\u00e3o, isso levar\u00e1 \u00e0 forma\u00e7\u00e3o de bolhas, inclus\u00e3o de esc\u00f3ria, retra\u00e7\u00e3o e outros defeitos de fundi\u00e7\u00e3o na superf\u00edcie e no interior das pe\u00e7as fundidas, o que afetar\u00e1 seriamente as caracter\u00edsticas f\u00edsicas, qu\u00edmicas e mec\u00e2nicas da fundi\u00e7\u00e3o, bem como suas propriedades de usinagem.<\/p>\n

\"Sistema<\/p>\n

Caracter\u00edsticas do sistema de desgaseifica\u00e7\u00e3o do alum\u00ednio<\/strong><\/p>\n

1. Alta efici\u00eancia na desgaseifica\u00e7\u00e3o, reduzindo significativamente as emiss\u00f5es de gases de efeito estufa que causam bolhas, inclus\u00f5es de esc\u00f3ria e retra\u00e7\u00e3o. Melhora a produtividade;
\n2. Sustentabilidade, aus\u00eancia de contamina\u00e7\u00e3o, uso de arg\u00f4nio ou nitrog\u00eanio como meio de refino; pode ser utilizado em conjunto com um fluxo de refino para obter melhores resultados;
\nReduzir os custos de processamento e de m\u00e3o de obra;
\n3. Aus\u00eancia de corros\u00e3o nos fornos de cadinho e nas conchas de transbordo;
\n4. Reduzir ao m\u00ednimo a contamina\u00e7\u00e3o secund\u00e1ria durante o processo de tratamento;
\n5. O eixo principal da m\u00e1quina \u00e9 equipado com um rolamento resistente a altas temperaturas e um motor com sistema de refrigera\u00e7\u00e3o a ar, o que reduz a temperatura de opera\u00e7\u00e3o do motor e prolonga sua vida \u00fatil.
\n6. Instale um bot\u00e3o de desligamento de emerg\u00eancia: opera\u00e7\u00e3o simples e segura, constru\u00e7\u00e3o robusta e menor necessidade de manuten\u00e7\u00e3o.
\n7. A velocidade de rota\u00e7\u00e3o do rotor pode ser ajustada em tempo real por meio de um inversor de frequ\u00eancia, o que \u00e9 pr\u00e1tico para uso em diversas situa\u00e7\u00f5es de desgaseifica\u00e7\u00e3o e purifica\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

\u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0434\u0435\u0433\u0430\u0437\u0430\u0446\u0438\u0438 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0430\u0440\u0433\u043e\u043d \u0438\u043b\u0438 \u0430\u0437\u043e\u0442 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0440\u0430\u0444\u0438\u043d\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u044b, \u0443\u0434\u0430\u043b\u044f\u0435\u0442 \u0432\u043e\u0434\u043e\u0440\u043e\u0434, \u043f\u0440\u0438\u043c\u0435\u0441\u0438 \u0438\u0437 \u043c\u043e\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u044f, \u0440\u043e\u0442\u043e\u0440 \u043f\u043e\u0433\u0440\u0443\u0436\u0430\u0435\u0442\u0441\u044f \u0432 \u0440\u0430\u0441\u043f\u043b\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u0439, \u0432\u0432\u043e\u0434\u0438\u0442 \u0440\u0430\u0444\u0438\u043d\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0433\u0430\u0437…<\/p>","protected":false},"author":1,"featured_media":12445,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13214,13213],"class_list":["post-12444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-13214","tag-13213"],"yoast_head":"\n\u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0434\u0435\u0433\u0430\u0437\u0430\u0446\u0438\u0438 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u044f, \u0420\u043e\u0442\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0434\u0435\u0433\u0430\u0437\u0430\u0446\u0438\u044f \u0441 \u0440\u043e\u0442\u043e\u0440\u043e\u043c<\/title>\n<meta name=\"description\" content=\"\u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0434\u0435\u0433\u0430\u0437\u0430\u0446\u0438\u0438 \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u044f 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