{"id":6893,"date":"2020-12-08T07:25:08","date_gmt":"2020-12-08T07:25:08","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6893"},"modified":"2020-12-08T07:25:08","modified_gmt":"2020-12-08T07:25:08","slug":"porous-ceramic-materials","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/porous-ceramic-materials\/","title":{"rendered":"Materiais cer\u00e2micos porosos"},"content":{"rendered":"

A queima dos materiais filtrantes cer\u00e2micos porosos \u00e9 geralmente realizada a uma temperatura superior \u00e0quela na qual a fase v\u00edtrea do material pode se formar e a liga\u00e7\u00e3o pode ocorrer, conferindo assim ao produto final as caracter\u00edsticas necess\u00e1rias de resist\u00eancia mec\u00e2nica e resist\u00eancia \u00e0 corros\u00e3o. A queima \u00e9 geralmente realizada em um forno cont\u00ednuo por 1 a 3 horas, e a temperatura m\u00e1xima \u00e9 mantida por 15 minutos a 1 hora. Temperaturas mais baixas e dura\u00e7\u00e3o mais curta podem melhorar a rentabilidade da produ\u00e7\u00e3o. No entanto, \u00e9 necess\u00e1rio garantir tempo e temperatura suficientes para que o material obtenha a resist\u00eancia e a resist\u00eancia \u00e0 corros\u00e3o exigidas.<\/p>\n

O tamanho dos poros do meio filtrante<\/a> \u00e9 determinado principalmente pelo tamanho inicial dos poros da espuma de pol\u00edmero utilizada no m\u00e9todo. Para filtrar ligas de alum\u00ednio de maneira eficaz, o tamanho prim\u00e1rio dos poros \u00e9 geralmente de 10 a 70 poros por polegada linear. No entanto, cada aplica\u00e7\u00e3o exigir\u00e1 tamanhos de poros espec\u00edficos, de acordo com os requisitos da oficina de fundi\u00e7\u00e3o ou da m\u00e1quina de tarugos em uma determinada aplica\u00e7\u00e3o, em termos de efici\u00eancia de filtra\u00e7\u00e3o e permeabilidade necess\u00e1ria do meio filtrante.<\/p>\n

Na t\u00e9cnica, o tamanho dos poros geralmente se refere ao n\u00famero de orif\u00edcios em uma dimens\u00e3o linear, como o n\u00famero de orif\u00edcios por polegada. Um valor de PPI mais alto indica um di\u00e2metro de orif\u00edcio menor. Esse \u00e9 o m\u00e9todo padr\u00e3o para registrar a abertura.<\/p>\n

\"Materiais<\/p>\n

A densidade dos materiais cer\u00e2micos porosos \u00e9 geralmente expressa como densidade relativa. A densidade relativa \u00e9 a raz\u00e3o entre a densidade medida e a densidade te\u00f3rica, sendo que a densidade te\u00f3rica \u00e9 a densidade calculada partindo do pressuposto de que n\u00e3o h\u00e1 poros.<\/p>\n

Teste todo o meio filtrante. O tempo de teste varia normalmente entre 35 e 120 minutos. Selecione o local do teste e utilize AA6063, AA6061 ou outras ligas de alum\u00ednio contendo magn\u00e9sio nesse local. Utilize juntas padr\u00e3o para o meio filtrante e as condi\u00e7\u00f5es padr\u00e3o de pr\u00e9-aquecimento do meio filtrante. Os dados coletados incluem a vaz\u00e3o do metal e as condi\u00e7\u00f5es de vazamento, a temperatura do metal fundido e os resultados da observa\u00e7\u00e3o visual do estado do meio filtrante durante o processo de pr\u00e9-aquecimento e imediatamente ap\u00f3s o vazamento. Ap\u00f3s o vazamento, foi realizada uma an\u00e1lise metal\u00fargica dos meios filtrantes utilizados para avaliar sua capacidade de resistir \u00e0 liga de alum\u00ednio fundido corrosiva.<\/p>","protected":false},"excerpt":{"rendered":"

The firing of the porous ceramic filter materials is usually carried out at a temperature higher than the temperature at which the glass phase of…<\/p>","protected":false},"author":1,"featured_media":6894,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nPorous Ceramic Materials Filter for Molten Aluminum<\/title>\n<meta name=\"description\" content=\"The pore size of porous ceramic filter materials is mainly determined by the polymer foam. 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The size is 10 to 70 holes\/inch.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.alalloycasting.com\/pt\/porous-ceramic-materials\/\" \/>\n<meta property=\"og:site_name\" content=\"alalloycasting\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-08T07:25:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Porous-Ceramic-Materials-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"AdTech\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"AdTech\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\"},\"author\":{\"name\":\"AdTech\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/person\\\/431d9c832111002d5e0bf6dc57a33c20\"},\"headline\":\"Porous Ceramic Materials\",\"datePublished\":\"2020-12-08T07:25:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\"},\"wordCount\":359,\"publisher\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2020\\\/12\\\/Porous-Ceramic-Materials-1.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"pt-BR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/\",\"name\":\"Porous Ceramic Materials Filter for Molten Aluminum\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/porous-ceramic-materials\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2020\\\/12\\\/Porous-Ceramic-Materials-1.jpg\",\"datePublished\":\"2020-12-08T07:25:08+00:00\",\"description\":\"The pore size of porous ceramic filter materials is mainly determined by the polymer foam. 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