{"id":4624,"date":"2020-12-03T08:30:06","date_gmt":"2020-12-03T08:30:06","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=4624"},"modified":"2020-12-03T08:30:06","modified_gmt":"2020-12-03T08:30:06","slug":"alumina-particles-in-ceramic-foam-filters","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/alumina-particles-in-ceramic-foam-filters\/","title":{"rendered":"Partikel Alumina dalam Filter Busa Keramik"},"content":{"rendered":"<p>Penggunaan partikel alumina dalam filter busa keramik tampaknya merupakan pilihan yang jelas. Alumina relatif inert secara kimia dalam aluminium cair dan paduan-paduannya yang umum, termasuk paduan magnesium. Bahan ini juga banyak digunakan sebagai bahan partikulat dalam bahan tahan api untuk melebur dan menampung paduan aluminium cair di dalam tungku. Selain itu, sebelum dikembangkan filter sekali pakai <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/alumina-ceramic-foam-filter-plate\/\">filter busa keramik<\/a>, sebuah filter lapisan alumina berbentuk pelat digunakan untuk menyaring aluminium cair. Filter lapisan ini merupakan wadah pemanas berukuran besar yang berisi partikel-partikel alumina berbentuk serpihan yang tidak terikat, yang dapat digunakan untuk proses pengecoran berulang selama berhari-hari atau bahkan berminggu-minggu. Sebagaimana pada filter lapisan dan bahan tahan api, paparan logam cair dalam waktu lama terhadap agregat yang tidak terikat mengharuskan penggunaan bahan partikulat yang inert secara kimia, seperti alumina.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4625\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Alumina-Particles-in-Ceramic-Foam-Filters.jpg\" alt=\"Partikel Alumina dalam Filter Busa Keramik\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Alumina-Particles-in-Ceramic-Foam-Filters.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Alumina-Particles-in-Ceramic-Foam-Filters-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Namun, partikel alumina dalam filter busa keramik memiliki koefisien muai panas linier yang tinggi (8,0\u00d710\u207b\u2076\/\u00b0C), dan akibat tegangan termal tinggi yang dihasilkan oleh kombinasi tersebut, bentuk keseluruhan alumina\u2014seperti pada filter busa keramik\u2014memiliki ketahanan terhadap guncangan termal yang buruk. Perubahan gradien termal disebabkan oleh pemanasan yang tidak merata dan koefisien muai panas yang tinggi. Selama pemanasan awal dan kontak awal dengan logam cair, bahan filter busa keramik dapat pecah atau terkelupas secara termal, dan menyebabkan bahan filter terlepas ke dalam ingot atau billet sebagai inklusi. Selain itu, ketika filter busa alumina terkurung dalam mangkuk filter selama pemanasan awal dan penggunaan, tegangan kompresi lateral yang tinggi dapat timbul akibat laju ekspansi termal filter yang tinggi, yang mengakibatkan kegagalan kompresi pada filter.<\/p>\n<p>Aluminium ortofosfat (Al(H\u2082PO\u2084)\u2083) banyak digunakan sebagai pengikat tahan api dalam industri logam. Bahan ini memiliki kekuatan basah yang baik saat dikeringkan pada suhu yang relatif rendah, memiliki penyusutan basah yang rendah, serta memiliki kekuatan yang baik pada proses pembakaran selanjutnya. Aluminium ortofosfat relatif murah, mudah diperoleh, dan memerlukan suhu pembakaran yang relatif rendah (1100\u00b0C) untuk menghasilkan ikatan aluminium fosfat (AlPO\u2084) akhir. Karena alasan-alasan tersebut, serta karena biaya aluminium ortofosfat yang relatif rendah, bahan ini banyak digunakan untuk membuat filter busa keramik guna penyaringan aluminium cair.<\/p>","protected":false},"excerpt":{"rendered":"<p>The use of alumina particles in ceramic foam filters seems to be an obvious choice. Alumina is relatively chemically inert in molten aluminum and its common alloys including magnesium alloys. It is also widely used as a particulate material in refractories for melting and holding molten aluminum alloys in furnaces. In addition, before the development [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4625,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-4624","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alumina Particles in Ceramic Foam Filters - AdTech China<\/title>\n<meta name=\"description\" content=\"The use of alumina particles in ceramic foam filters seems to be an obvious choice. 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