{"id":10831,"date":"2021-10-24T08:10:38","date_gmt":"2021-10-24T08:10:38","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10831"},"modified":"2021-10-22T08:13:27","modified_gmt":"2021-10-22T08:13:27","slug":"ceramic-filter-for-aluminium-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/ceramic-filter-for-aluminium-casting\/","title":{"rendered":"Filtro cer\u00e2mico para fundi\u00e7\u00e3o de alum\u00ednio"},"content":{"rendered":"<p>O filtro de espuma cer\u00e2mica para fundi\u00e7\u00e3o de alum\u00ednio possui uma estrutura de c\u00e9lulas abertas, na qual os vazios interconectados s\u00e3o envolvidos por uma malha de material cer\u00e2mico. Essa estrutura \u00e9 normalmente utilizada para a filtragem de metal fundido, e o filtro de espuma cer\u00e2mica \u00e9 amplamente utilizado em fundi\u00e7\u00f5es de alum\u00ednio.<\/p>\n<p>Caracter\u00edsticas do filtro cer\u00e2mico de espuma para fundi\u00e7\u00e3o de alum\u00ednio<\/p>\n<p>1. Alta resist\u00eancia ao choque t\u00e9rmico, sem rachaduras ou descascamento durante o pr\u00e9-aquecimento ou o contato com o metal fundido. O material de espuma cer\u00e2mica possui um baixo coeficiente de expans\u00e3o t\u00e9rmica, o que minimiza a tens\u00e3o compressiva transversal quando est\u00e1 no recipiente do filtro.<br \/>\n2. Resist\u00eancia \u00e0 corros\u00e3o: O material do filtro n\u00e3o apresenta rea\u00e7\u00f5es significativas dentro da faixa de aplica\u00e7\u00e3o prevista (tempo, temperatura, teor de liga).<br \/>\n3. Resist\u00eancia \u00e0 flex\u00e3o e \u00e0 compress\u00e3o suficiente.<br \/>\n4. Economia da produ\u00e7\u00e3o.<br \/>\n5. Baixa densidade ou peso leve, o que \u00e9 pr\u00e1tico para o operador.<\/p>\n<p>A taxa de expans\u00e3o t\u00e9rmica do filtro de espuma cer\u00e2mica est\u00e1 na faixa de 1,5 a 7,5 \u00d7 10\u207b\u2076 mm\/\u2103. Em condi\u00e7\u00f5es normais de uso, comprovou-se que o filtro de espuma cer\u00e2mica resiste ao ataque qu\u00edmico da liga de alum\u00ednio fundida. O filtro de espuma cer\u00e2mica \u00e9 leve e, de prefer\u00eancia, possui uma densidade de cerca de 0,25 a 0,40 g\/cc.<\/p>\n<p>A espuma cer\u00e2mica \u00e9 uma espuma resistente fabricada a partir de cer\u00e2mica. As t\u00e9cnicas de fabrica\u00e7\u00e3o incluem a impregna\u00e7\u00e3o interna de espumas polim\u00e9ricas de c\u00e9lula aberta com pasta cer\u00e2mica e, em seguida, a queima em um forno, resultando apenas no material cer\u00e2mico. As espumas podem ser compostas por diversos materiais cer\u00e2micos, como o \u00f3xido de alum\u00ednio \u2014 uma cer\u00e2mica comum para altas temperaturas \u2014, e adquirem propriedades isolantes gra\u00e7as aos in\u00fameros min\u00fasculos poros cheios de ar presentes no material.<\/p>\n<p><a href=\"http:\/\/www.alalloycasting.com\/pt\/adtech-ceramic-foam-filters\/\">Filtros de espuma cer\u00e2mica<\/a> s\u00e3o destinados principalmente \u00e0 filtragem de alum\u00ednio e ligas em fundi\u00e7\u00f5es e salas de fundi\u00e7\u00e3o. Gra\u00e7as \u00e0 excelente resist\u00eancia ao ataque e \u00e0 corros\u00e3o causados pelo alum\u00ednio fundido, o filtro consegue remover eficazmente as inclus\u00f5es, reduzir o g\u00e1s retido e proporcionar um fluxo laminar, resultando em um metal filtrado significativamente mais limpo. Um metal mais limpo resulta em pe\u00e7as fundidas de maior qualidade, menos refugo e menos defeitos por inclus\u00f5es, fatores que contribuem para o lucro l\u00edquido.<\/p>","protected":false},"excerpt":{"rendered":"<p>The ceramic foam filter for aluminium casting has an open-cell structure, in which connected voids are surrounded by a ceramic material mesh. This structure is&hellip;<\/p>","protected":false},"author":1,"featured_media":10834,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10831","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>Ceramic Filter for Aluminium Casting -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The ceramic foam filter for aluminium casting has an open-cell structure, in which connected voids are surrounded by a ceramic material mesh.\" \/>\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\/ceramic-filter-for-aluminium-casting\/\" \/>\n<meta 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