{"id":12248,"date":"2022-01-13T03:22:09","date_gmt":"2022-01-13T03:22:09","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12248"},"modified":"2022-01-13T03:22:09","modified_gmt":"2022-01-13T03:22:09","slug":"high-temperature-ceramic-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/high-temperature-ceramic-filter\/","title":{"rendered":"Filtro cer\u00e2mico para altas temperaturas"},"content":{"rendered":"<p>Os filtros cer\u00e2micos para altas temperaturas que produzimos utilizam alumina como material principal e possuem uma estrutura de rede tridimensional.<\/p>\n<p>O metal fundido geralmente cont\u00e9m impurezas na forma de inclus\u00f5es que n\u00e3o s\u00e3o removidas durante o refino. Para obter mat\u00e9rias-primas met\u00e1licas de alta qualidade para a fabrica\u00e7\u00e3o de chapas, trefilagem fina e fundi\u00e7\u00e3o de precis\u00e3o, muitas vezes \u00e9 necess\u00e1rio remover essas inclus\u00f5es, fazendo com que o metal fundido passe por filtros.<\/p>\n<p>Na t\u00e9cnica anterior, para filtrar metal fundido, s\u00e3o utilizadas espumas cer\u00e2micas com c\u00e9lulas internas abertas. As condi\u00e7\u00f5es de temperatura do filtro s\u00e3o muito rigorosas, e a temperatura do metal fundido a ser filtrado chega a cerca de 1.500 \u00b0C ou mais, o que exige uma sele\u00e7\u00e3o rigorosa de materiais e estruturas capazes de suportar choques t\u00e9rmicos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-12249\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2022\/01\/High-Temperature-Ceramic-Filter.jpg\" alt=\"Filtro cer\u00e2mico para altas temperaturas\" width=\"600\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/High-Temperature-Ceramic-Filter.jpg 600w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/High-Temperature-Ceramic-Filter-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p><strong>Processo de fabrica\u00e7\u00e3o de filtros de espuma cer\u00e2mica<\/strong><\/p>\n<p>A mat\u00e9ria-prima em p\u00f3 e o agente de expans\u00e3o s\u00e3o misturados e expandidos simultaneamente e, em seguida, submetidos \u00e0 queima para formar um corpo poroso. Como a propor\u00e7\u00e3o do agente de expans\u00e3o, na forma de um material org\u00e2nico, chega a cerca de 40% em peso, a cer\u00e2mica que forma o esqueleto ap\u00f3s a queima apresenta uma estrutura n\u00e3o uniforme, em vez de uma estrutura densa. Como \u00e9 dif\u00edcil controlar os poros ou a rede formada pelo moldagem por expans\u00e3o, obt\u00e9m-se um corpo poroso no qual ocorrem perdas de press\u00e3o consider\u00e1veis.<\/p>\n<p>O filtro cer\u00e2mico para altas temperaturas apresenta resist\u00eancia ao calor, baixa expans\u00e3o t\u00e9rmica, resist\u00eancia ao choque t\u00e9rmico em metais fundidos a temperaturas superiores a 1.500 \u00b0C \u2014 como a liga de a\u00e7o inoxid\u00e1vel fundida \u2014, resist\u00eancia mec\u00e2nica, entupimento minimizado e baixa perda de press\u00e3o, sendo eficaz na filtragem de metais fundidos.<\/p>\n<p>\u00c9 sabido que as espumas cer\u00e2micas reticuladas tridimensionais com c\u00e9lulas abertas s\u00e3o preparadas por meio da aplica\u00e7\u00e3o de uma pasta cer\u00e2mica sobre um substrato na forma de uma espuma de resina sint\u00e9tica, removendo o excesso de pasta, secando e queimando o substrato revestido. Para que a espuma cer\u00e2mica tenha resist\u00eancia suficiente para suportar o <a href=\"http:\/\/www.alalloycasting.com\/pt\/filtration-of-molten-metal\/\">filtragem de metal fundido<\/a>, \u00e9 necess\u00e1rio aplicar uma grande quantidade de pasta cer\u00e2mica sobre a espuma de resina sint\u00e9tica. Esse filtro cer\u00e2mico apresenta baixa perda de press\u00e3o e bom desempenho de filtra\u00e7\u00e3o.<\/p>\n<div class=\"su-youtube su-u-responsive-media-yes\"><iframe loading=\"lazy\" width=\"600\" height=\"400\" src=\"https:\/\/www.youtube.com\/embed\/4mA_MJl-Oy4?\" frameborder=\"0\" allowfullscreen allow=\"autoplay; encrypted-media; picture-in-picture\" title=\"\"><\/iframe><\/div>","protected":false},"excerpt":{"rendered":"<p>High Temperature Ceramic Filter we produce use alumina as the main material and have a three-dimensional network structure. Molten metal often contains impurities in the&hellip;<\/p>","protected":false},"author":1,"featured_media":12249,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13153,483],"class_list":["post-12248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-high-temperature-ceramic-filter","tag-molten-metal-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>High Temperature Ceramic Filter, Molten Metal Filter<\/title>\n<meta name=\"description\" content=\"High Temperature Ceramic Filter we produce use alumina as the main material and have a three-dimensional network structure.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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