{"id":3471,"date":"2020-08-07T06:37:19","date_gmt":"2020-08-07T06:37:19","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3471"},"modified":"2020-08-07T06:37:19","modified_gmt":"2020-08-07T06:37:19","slug":"purification-technology-in-furnace","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/purification-technology-in-furnace\/","title":{"rendered":"Tecnologia de purifica\u00e7\u00e3o em fornos"},"content":{"rendered":"<p>A tecnologia de purifica\u00e7\u00e3o no forno \u00e9 utilizada para remover o g\u00e1s e outras impurezas. O hidrog\u00eanio presente na liga de alum\u00ednio prov\u00e9m principalmente do vapor de \u00e1gua contido no g\u00e1s do forno. O teor de hidrog\u00eanio no alum\u00ednio l\u00edquido aumenta com o aumento da press\u00e3o parcial do hidrog\u00eanio e da temperatura.<\/p>\n<p>Algumas das inclus\u00f5es na massa fundida de alum\u00ednio e ligas de alum\u00ednio prov\u00eam diretamente do forno, e a maioria delas se forma durante o processo de fus\u00e3o e vazamento, sendo principalmente inclus\u00f5es de \u00f3xido. Part\u00edculas grandes de inclus\u00f5es tornam a estrutura da pe\u00e7a fundida descont\u00ednua, reduzem a densidade da pe\u00e7a, tornam-se a origem da corros\u00e3o, reduzem significativamente a resist\u00eancia e a plasticidade dos materiais e, frequentemente, s\u00e3o a causa de trincas.<\/p>\n<p>Al\u00e9m disso, as inclus\u00f5es finas distribu\u00eddas na massa fundida de alum\u00ednio aumentam a viscosidade da massa, reduzindo assim a capacidade de alimenta\u00e7\u00e3o da liga de alum\u00ednio e facilitando a forma\u00e7\u00e3o de cavidades de retra\u00e7\u00e3o ou porosidade. No caso de ligas de alum\u00ednio de alta resist\u00eancia, isso reduzir\u00e1 sua resist\u00eancia mec\u00e2nica e confiabilidade, afetando gravemente a qualidade da superf\u00edcie e a qualidade interna, resultando em baixa taxa de aproveitamento do produto acabado e at\u00e9 mesmo no descarte de lotes. Portanto, \u00e9 muito importante controlar o teor de hidrog\u00eanio, as inclus\u00f5es n\u00e3o met\u00e1licas e os elementos nocivos no alum\u00ednio e em suas ligas fundidas, utilizando determinados princ\u00edpios f\u00edsicos e qu\u00edmicos e as medidas de processo eficazes correspondentes.<\/p>\n<p>A tecnologia de purifica\u00e7\u00e3o em fornos pode ser dividida em tecnologia de tratamento de purifica\u00e7\u00e3o por adsor\u00e7\u00e3o e tecnologia de tratamento de purifica\u00e7\u00e3o sem adsor\u00e7\u00e3o. A primeira inclui, principalmente, purga com g\u00e1s inerte, purga com g\u00e1s ativo, purga com g\u00e1s misto (N\u2082-Cl\u2082 ou N\u2082-Cl\u2082-CO), purifica\u00e7\u00e3o com sal de cloro, purifica\u00e7\u00e3o com agente refinador n\u00e3o t\u00f3xico e <a href=\"http:\/\/www.alalloycasting.com\/pt\/flux-refining-process\/\">refinamento por fluxo<\/a>. O tratamento em forno \u00e9 um processo muito importante na purifica\u00e7\u00e3o da liga de alum\u00ednio fundida, desempenhando um papel fundamental na remo\u00e7\u00e3o de esc\u00f3ria e de oxig\u00eanio da liga de alum\u00ednio fundida. A AdTech oferece fluxo de refino para a purifica\u00e7\u00e3o da liga de alum\u00ednio fundida.<\/p>\n<p>Embora o efeito de purifica\u00e7\u00e3o seja \u00f3bvio, ele \u00e9 prejudicial ao meio ambiente e aos equipamentos. Posteriormente, passou-se a utilizar N\u2082 para a purifica\u00e7\u00e3o, inclusive N\u2082 de alta pureza (99,999%), o que n\u00e3o s\u00f3 aumentou o custo, como tamb\u00e9m apresentou um efeito de purifica\u00e7\u00e3o insatisfat\u00f3rio. Nos \u00faltimos anos, o refinamento com g\u00e1s misto tem sido amplamente utilizado no exterior; ou seja, a adi\u00e7\u00e3o de 10% a 15% de cloro ao nitrog\u00eanio de alta pureza permite obter um bom efeito de refinamento e tem pouco impacto sobre o meio ambiente. A unidade de desgaseifica\u00e7\u00e3o online da AdTech adota o <a href=\"http:\/\/www.alalloycasting.com\/pt\/nitrogen-degassing-aluminum\/\">Desgaseifica\u00e7\u00e3o de alum\u00ednio com nitrog\u00eanio<\/a> m\u00e9todo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Purification Technology in Furnace is used to remove the gas and other impurities. Hydrogen in aluminum alloy mainly comes from water vapor in furnace gas.&hellip;<\/p>","protected":false},"author":1,"featured_media":3472,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[2112,2131,2128,2127,2130,2129,2110,2111,2121,2122,2123,2120,2116,2118,2117,2126,2119,2113,2115,2114,2124,2125],"class_list":["post-3471","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-purification-technology-in-furnace-aluar-argentina-aluminium","tag-purification-technology-in-furnace-aluminium-argentina","tag-purification-technology-in-furnace-aluminum-argentina","tag-purification-technology-in-furnace-aluminum-composite-panel-argentina","tag-purification-technology-in-furnace-aluminum-production-in-argentina","tag-purification-technology-in-furnace-aluminum-quota-argentina","tag-purification-technology-in-furnace-argentina-aluminium","tag-purification-technology-in-furnace-argentina-aluminium-production","tag-purification-technology-in-furnace-argentina-aluminum","tag-purification-technology-in-furnace-argentina-aluminum-production","tag-purification-technology-in-furnace-argentina-aluminum-quota","tag-purification-technology-in-furnace-cuit-sapa-aluminium-argentina","tag-purification-technology-in-furnace-hydro-aluminium-argentina","tag-purification-technology-in-furnace-hydro-aluminium-argentina-pilar","tag-purification-technology-in-furnace-hydro-aluminium-argentina-s-a","tag-purification-technology-in-furnace-hydro-aluminum-argentina","tag-purification-technology-in-furnace-rsv-aluminium-argentina","tag-purification-technology-in-furnace-sapa-aluminium-argentina","tag-purification-technology-in-furnace-sapa-aluminium-argentina-s-a","tag-purification-technology-in-furnace-sapa-aluminium-argentina-sa","tag-purification-technology-in-furnace-sapa-aluminum-argentina","tag-purification-technology-in-furnace-sapa-aluminum-argentina-s-a"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Purification Technology in Furnace,Aluminum Flux Refining<\/title>\n<meta name=\"description\" content=\"Purification Technology in Furnace is used to remove the Hydrogen and other impurities. 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