{"id":8521,"date":"2021-04-25T08:37:04","date_gmt":"2021-04-25T08:37:04","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8521"},"modified":"2021-04-25T08:37:04","modified_gmt":"2021-04-25T08:37:04","slug":"fluxes-for-aluminum-melt","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/fluxes-for-aluminum-melt\/","title":{"rendered":"Fluxos para alum\u00ednio fundido"},"content":{"rendered":"<p>O uso de fundentes para remover o hidrog\u00eanio da massa fundida de alum\u00ednio \u00e9 totalmente mec\u00e2nico. As bolhas menores formadas tamb\u00e9m subir\u00e3o \u00e0 superf\u00edcie a uma velocidade menor, permitindo assim um maior tempo de contato entre a massa fundida e o agente de desgaseifica\u00e7\u00e3o.<\/p>\n<p>Como o fluxo apresenta um alto efeito de umecta\u00e7\u00e3o na superf\u00edcie, ele proporciona melhor ades\u00e3o de \u00f3xidos e part\u00edculas. Isso, aliado \u00e0 forma\u00e7\u00e3o de bolhas menores, exp\u00f5e uma maior quantidade de g\u00e1s \u00e0 massa fundida, tornando o solvente um excelente meio para a remo\u00e7\u00e3o de part\u00edculas e \u00f3xidos.<\/p>\n<p>Na pr\u00e1tica, \u00e9 simples utilizar apenas g\u00e1s inerte para o refino. O g\u00e1s \u00e9 armazenado na forma l\u00edquida no conjunto de cilindros de g\u00e1s ou no tanque de armazenamento de g\u00e1s e \u00e9 vaporizado antes de entrar no sistema de abastecimento por tubula\u00e7\u00e3o. O g\u00e1s inerte passa pelo regulador de press\u00e3o e pela unidade de dosagem. No processo de refino, dependendo da escolha do equipamento, o g\u00e1s \u00e9 introduzido na massa fundida por meio de tamp\u00f5es porosos, pistolas de pulveriza\u00e7\u00e3o ou por meio de equipamentos rotativos ou similares.<\/p>\n<p>Os gases inertes puros (como o nitrog\u00eanio e o arg\u00f4nio) s\u00f3 conseguem atingir um determinado n\u00edvel de remo\u00e7\u00e3o absoluta de hidrog\u00eanio. Para que o valor seja inferior ao predeterminado, \u00e9 necess\u00e1rio misturar outro g\u00e1s com o nitrog\u00eanio ou o arg\u00f4nio. Da mesma forma, o g\u00e1s inerte puro n\u00e3o apresenta bom desempenho na remo\u00e7\u00e3o de part\u00edculas, \u00f3xidos e elementos; por isso, \u00e9 necess\u00e1rio misturar o g\u00e1s inerte com um g\u00e1s reativo.<\/p>\n<p>Os fundentes para alum\u00ednio fundido s\u00e3o utilizados para descrever o processamento do alum\u00ednio fundido no qual s\u00e3o empregados compostos. Esses compostos s\u00e3o geralmente inorg\u00e2nicos e podem desempenhar diversas fun\u00e7\u00f5es, tais como desgaseifica\u00e7\u00e3o, redu\u00e7\u00e3o do c\u00e1lcio, remo\u00e7\u00e3o de impurezas e forma\u00e7\u00e3o de ligas. <a href=\"http:\/\/www.alalloycasting.com\/pt\/aluminum-casting-flux\/\">Fluxo para fundi\u00e7\u00e3o de alum\u00ednio<\/a> tamb\u00e9m inclui o tratamento da massa fundida com g\u00e1s inerte ou g\u00e1s reativo para remover inclus\u00f5es ou contaminantes gasosos do metal. O fluxo de alum\u00ednio l\u00edquido (na forma de p\u00f3, flocos ou gr\u00e2nulos) \u00e9 geralmente composto por cloretos e fluoretos, al\u00e9m de aditivos adicionais que lhe conferem propriedades especiais. Ao misturar gases inertes com fundentes, \u00e9 importante misturar esses gases corretamente.<\/p>","protected":false},"excerpt":{"rendered":"<p>The use of fluxes to remove hydrogen from the aluminum melt is completely mechanical. The smaller bubbles formed will also rise to the surface at&hellip;<\/p>","protected":false},"author":1,"featured_media":8541,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8521","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>Fluxes for Aluminum Melt -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The use of fluxes to remove hydrogen from the aluminum melt is completely mechanical. 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