{"id":3993,"date":"2020-08-21T09:46:23","date_gmt":"2020-08-21T09:46:23","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3993"},"modified":"2020-08-21T09:46:23","modified_gmt":"2020-08-21T09:46:23","slug":"filtering-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/filtering-molten-aluminum\/","title":{"rendered":"Filtragem de alum\u00ednio fundido"},"content":{"rendered":"<p>A filtragem do alum\u00ednio fundido \u00e9 o m\u00e9todo mais eficaz para remover a esc\u00f3ria n\u00e3o met\u00e1lica do alum\u00ednio fundido. Na fundi\u00e7\u00e3o de ligas de alum\u00ednio, utiliza-se um filtro de tecido de vidro multicamadas ou <a href=\"http:\/\/www.alalloycasting.com\/pt\/ceramic-foam-filter\/\">filtro de espuma cer\u00e2mica<\/a> \u00e9 geralmente utilizado. Independentemente do m\u00e9todo de filtragem adotado, para garantir a filtragem normal do alum\u00ednio fundido, a esc\u00f3ria superficial deve ser removida antes da filtragem do alum\u00ednio fundido, pois ela tende a obstruir a malha do material filtrante e impossibilitar a filtragem. A maneira mais f\u00e1cil de remover a esc\u00f3ria da superf\u00edcie do alum\u00ednio fundido \u00e9 instalar um defletor de esc\u00f3ria no canal de vazamento, de modo que o alum\u00ednio fundido possa se livrar da esc\u00f3ria antes da filtragem.<\/p>\n<p>Para produzir barras fundidas de liga de alum\u00ednio de alta qualidade, al\u00e9m de selecionar mat\u00e9rias-primas adequadas, controlar rigorosamente a temperatura de fus\u00e3o, a temperatura de fundi\u00e7\u00e3o, o tratamento de refinamento de gr\u00e3os, o refinamento da liga l\u00edquida, a filtragem do alum\u00ednio fundido e outras medidas do processo, tamb\u00e9m \u00e9 necess\u00e1rio operar com cuidado para evitar rachaduras e ondula\u00e7\u00f5es na pel\u00edcula de \u00f3xido.<\/p>\n<p>Durante a fundi\u00e7\u00e3o, evite ao m\u00e1ximo a turbul\u00eancia e o agita\u00e7\u00e3o do alum\u00ednio fundido. N\u00e3o utilize ferramentas para agitar o alum\u00ednio fundido na calha e na placa de desvio com facilidade, de modo que o alum\u00ednio fundido flua suavemente para o molde sob a prote\u00e7\u00e3o da pel\u00edcula de \u00f3xido superficial. Isso ocorre porque a agita\u00e7\u00e3o do alum\u00ednio fundido pela ferramenta e o pr\u00f3prio fluxo do material rompem a pel\u00edcula de \u00f3xido na superf\u00edcie do alum\u00ednio fundido, causando nova oxida\u00e7\u00e3o e, ao mesmo tempo, fazendo com que a pel\u00edcula de \u00f3xido seja arrastada para dentro do alum\u00ednio fundido.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3995\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1.jpg\" alt=\"Filtragem de alum\u00ednio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Filtering-Molten-Aluminum-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Estudos demonstraram que a pel\u00edcula de \u00f3xido possui uma capacidade de adsor\u00e7\u00e3o muito elevada, contendo 2% de \u00e1gua. Quando a pel\u00edcula de \u00f3xido entra em contato com o alum\u00ednio fundido, a \u00e1gua presente nela reage com o alum\u00ednio fundido, causando a absor\u00e7\u00e3o de hidrog\u00eanio e a forma\u00e7\u00e3o de inclus\u00f5es de esc\u00f3ria. Antes do vazamento, pr\u00e9-aque\u00e7a e seque completamente o canal de vazamento, <a href=\"http:\/\/www.alalloycasting.com\/pt\/distributing-launder\/\">canal de distribui\u00e7\u00e3o<\/a> e outros sistemas de fundi\u00e7\u00e3o para evitar que a rea\u00e7\u00e3o entre a umidade e o alum\u00ednio fundido provoque a absor\u00e7\u00e3o de hidrog\u00eanio.<\/p>\n<p>Por fim, as barras de alum\u00ednio s\u00e3o homogeneizadas, o que permite a produ\u00e7\u00e3o de barras de alum\u00ednio de alta qualidade, proporcionando uma base material confi\u00e1vel para a fabrica\u00e7\u00e3o de perfis de alta qualidade.<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. In the casting of aluminum alloy, multi-layer glass cloth filter&hellip;<\/p>","protected":false},"author":1,"featured_media":3994,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[1714,4497],"class_list":["post-3993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-filtration","tag-filtering-molten-aluminum"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Filtering Molten Aluminum to Remove Non-metallic Slag<\/title>\n<meta name=\"description\" content=\"Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. Ceramic foam filter is generally used.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/pt\/filtering-molten-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filtering Molten Aluminum to Remove Non-metallic Slag\" \/>\n<meta property=\"og:description\" content=\"Filtering molten aluminum is the most effective method to remove non-metallic slag in molten aluminum. 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