{"id":6989,"date":"2021-09-23T06:05:26","date_gmt":"2021-09-23T06:05:26","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=6989"},"modified":"2021-09-23T06:05:26","modified_gmt":"2021-09-23T06:05:26","slug":"nitrogen-refining","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/nitrogen-refining\/","title":{"rendered":"Pemurnian Nitrogen"},"content":{"rendered":"<p>Dibandingkanlah hasil pemurnian dengan nitrogen murni dan pemurnian dengan campuran nitrogen murni serta fluks tungku peleburan. Waktu pemurniannya sama, yaitu 12 menit, dan kandungan hidrogen pada aluminium cair sebelum pemurnian adalah 0,41 mL\/100 g. Kandungan hidrogen setelah pemurnian dengan nitrogen murni adalah 0,29 mL\/100 g, sedangkan kandungan hidrogen pada logam cair setelah dicampur dengan nitrogen dan fluks hanya 0,06 mL\/100 g. Tingkat penghilangan hidrogen pada metode pertama hanya 29%, sedangkan pada metode kedua mencapai 85%.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6990\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Nitrogen-Refining.jpg\" alt=\"Pemurnian Nitrogen\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Nitrogen-Refining.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Nitrogen-Refining-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Saat gas inert digunakan dalam proses pemurnian dengan metode peniupan gas, metode ini memiliki keunggulan berupa kemudahan pengoperasian, ramah lingkungan, aman, dan biaya rendah; namun, efektivitas pemurniannya dibatasi oleh tingkat kemurnian gas inert itu sendiri. Secara umum, gas inert\u2014bahkan dengan langkah-langkah pemurnian yang ketat\u2014akan selalu mengandung sejumlah kelembapan dan oksigen. Setelah gas ini ditiupkan ke dalam aluminium cair, lapisan oksida yang tipis dan padat akan terbentuk di permukaan gelembung yang terbentuk, yang mencegah hidrogen dalam cairan masuk ke dalam gelembung dan secara signifikan mengurangi laju pelepasan gas. Ketika gas inert ditiupkan dan sejumlah <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/powdered-flux\/\">fluks bubuk<\/a> Saat diperkenalkan, permukaan gelembung dikelilingi oleh lapisan fluks cair, yang tidak hanya mencegah kelembapan dan oksigen di dalam gelembung bersentuhan dengan aluminium cair, tetapi juga mencegah terbentuknya lapisan oksida. Selain itu, meskipun oksida terbentuk, oksida tersebut akan diserap oleh lapisan fluks, sehingga secara efektif meningkatkan efektivitas proses pemurnian.<\/p>\n<p>Saat menggunakan proses pemurnian dengan peniupan nitrogen, suhu pemurnian sebaiknya diturunkan secara tepat. Meskipun penurunan suhu mengurangi laju difusi hidrogen atomik dalam cairan logam, hal ini justru meningkatkan viskositas cairan logam, memperpanjang waktu tinggal gelembung di dalam cairan logam, meningkatkan tekanan parsial hidrogen yang terlarut dalam cairan logam, serta meningkatkan konsentrasi hidrogen di batas antara gelembung dan cairan logam. Konsentrasi hidrogen berkurang, yang bermanfaat untuk meningkatkan efektivitas penghilangan hidrogen melalui difusi. Pada saat yang sama, menurunkan suhu pemurnian secara tepat juga dapat mengurangi kecenderungan cairan logam untuk teroksidasi dan terkontaminasi gas, serta kecenderungan pembentukan Mg\u2083N\u2082 dan AlN.<\/p>","protected":false},"excerpt":{"rendered":"<p>The effects of pure nitrogen refining and pure nitrogen-melting furnace flux mixed blowing refining have been compared. The refining time is the same as 12 minutes, and the hydrogen content of the aluminum melt before refining is 0.41mL\/100g. The hydrogen content after refining with pure nitrogen is 0.29mL\/100g, while the hydrogen content of the melt [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6990,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-6989","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>Nitrogen Refining Aluminum Melt in Melting Furnace<\/title>\n<meta name=\"description\" content=\"When nitrogen is used for inert gas blowing refining, it has the characteristics of convenient operation, environmental protection and safety.\" \/>\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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