{"id":10814,"date":"2021-10-23T07:44:27","date_gmt":"2021-10-23T07:44:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10814"},"modified":"2021-10-22T07:52:54","modified_gmt":"2021-10-22T07:52:54","slug":"purifying-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/purifying-molten-aluminum\/","title":{"rendered":"Purifica\u00e7\u00e3o do alum\u00ednio fundido"},"content":{"rendered":"<p>A purifica\u00e7\u00e3o do alum\u00ednio fundido desempenha um papel importante na melhoria das propriedades mec\u00e2nicas das pe\u00e7as fundidas. Atualmente, o dispositivo de filtragem utilizado para purificar o metal fundido \u00e9, principalmente, um filtro de espuma cer\u00e2mica, que consegue interceptar com efic\u00e1cia as impurezas nocivas presentes no metal fundido, converter o fluxo turbulento do metal l\u00edquido em fluxo laminar e remover completamente as impurezas de grande porte. Al\u00e9m de remover pequenas inclus\u00f5es do metal fundido, ele melhora a estrutura da composi\u00e7\u00e3o, reduz efetivamente os gases e elementos nocivos no metal l\u00edquido e purifica e homogene\u00edza o metal l\u00edquido.<\/p>\n<p>Na verdade, o alum\u00ednio fundido geralmente cont\u00e9m s\u00f3lidos arrastados, que s\u00e3o prejudiciais ao produto final de fundi\u00e7\u00e3o. Esses s\u00f3lidos arrastados geralmente prov\u00eam de tr\u00eas fontes. Algumas s\u00e3o part\u00edculas de alumina; a camada de \u00f3xido flutuante na superf\u00edcie as suga para dentro do fluxo l\u00edquido; e algumas das part\u00edculas arrastadas s\u00e3o fragmentos do revestimento do forno, da calha de transporte e de outras partes do equipamento de processamento do alum\u00ednio fundido, que s\u00e3o erodidos e arrastados. No fluxo de alum\u00ednio, algumas part\u00edculas s\u00e3o precipitados de impurezas insol\u00faveis, como compostos intermet\u00e1licos, boretos, carbonetos ou outros compostos de alum\u00ednio. Quando essas impurezas aparecem no produto fundido final ap\u00f3s a solidifica\u00e7\u00e3o do alum\u00ednio fundido, elas podem causar a diminui\u00e7\u00e3o da ductilidade desse produto final ou prejudicar as caracter\u00edsticas de usinagem do produto final. Portanto, \u00e9 recomend\u00e1vel remover os s\u00f3lidos arrastados da corrente de alum\u00ednio fundido antes de mold\u00e1-la em um s\u00f3lido.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10816\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Purifying-Molten-Aluminum-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Geralmente, antes da fundi\u00e7\u00e3o, utiliza-se o m\u00e9todo de purifica\u00e7\u00e3o do alum\u00ednio fundido por meio de filtro de espuma cer\u00e2mica para remover os s\u00f3lidos arrastados da liga de alum\u00ednio fundida.<\/p>\n<p>O <a href=\"http:\/\/www.alalloycasting.com\/pt\/best-ceramic-foam-filter\/\">filtro de espuma cer\u00e2mica<\/a>\u00a0apresenta bom desempenho em altas temperaturas e \u00e9 capaz de filtrar o alum\u00ednio l\u00edquido sem contaminar a liga; al\u00e9m disso, possui boa porosidade transversal, o que lhe confere boas propriedades de filtra\u00e7\u00e3o e adsor\u00e7\u00e3o. \u00c9 poss\u00edvel determinar a capacidade de reten\u00e7\u00e3o de inclus\u00f5es de \u00f3xido e de fluxo na solu\u00e7\u00e3o met\u00e1lica. Possui bons efeitos de filtragem e purifica\u00e7\u00e3o, al\u00e9m de excelente resist\u00eancia a altas temperaturas, estabilidade ao choque t\u00e9rmico e resist\u00eancia qu\u00edmica. Ao mesmo tempo, o filtro de espuma cer\u00e2mica possui um processo de fabrica\u00e7\u00e3o simples e permite a produ\u00e7\u00e3o de produtos filtrantes de maiores dimens\u00f5es.<\/p>","protected":false},"excerpt":{"rendered":"<p>The purifying molten aluminum plays an important role in improving the mechanical properties of castings. At present, the filtering device used to purify the molten&hellip;<\/p>","protected":false},"author":1,"featured_media":10815,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10814","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>Purifying Molten Aluminum with Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"The purifying molten aluminum plays an important role in improving the mechanical properties of castings. 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