{"id":4845,"date":"2020-12-18T09:24:57","date_gmt":"2020-12-18T09:24:57","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=4845"},"modified":"2020-12-18T09:24:57","modified_gmt":"2020-12-18T09:24:57","slug":"molten-metal-degassing","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/molten-metal-degassing\/","title":{"rendered":"Penghilangan Gas dari Logam Cair"},"content":{"rendered":"<p>Penghilangan gas pada logam cair secara online biasanya dilakukan dengan menghembuskan gas inert yang mengandung persentase tertentu gas klorin (Cl\u2082). Klorin membentuk gelembung-gelembung kecil dalam logam cair. Penghilangan gas biasanya dilakukan dalam proses berkelanjutan sebelum pengecoran, yang juga dapat dilakukan secara berkelanjutan. Campuran gas inert dan Cl\u2082 (klorin) disuntikkan ke dalam logam cair untuk mengolah logam cair tersebut saat mengalir dari tungku ke lubang penuangan. Meskipun hanya gas inert yang dapat secara efektif menghilangkan H\u2082 (hidrogen) terlarut melalui transfer massa, penghilangan kontaminan logam alkali dan logam alkali tanah (seperti natrium (Na), litium (Li), dan kalsium (Ca)) dalam logam cair tetap diperlukan. Zat reaktan, seperti Cl\u2082.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4846\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing.jpg\" alt=\"Penghilangan Gas dari Logam Cair\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Agar proses penghilangan gas dapat berjalan efektif, semua d<a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/degassing-equipment\/\">peralatan penghilang gas<\/a> harus menyalurkan jumlah gas minimum tertentu per kilogram logam. Logam cair dapat dihilangkan gasnya secara langsung dalam degasser tipe palung atau kotak dalam. Pada degasser tipe palung, waktu tinggal logam di area penyaluran gas jauh lebih singkat dibandingkan pada degasser kotak dalam. Setiap ejektor rotari harus menyalurkan sejumlah besar gas dan memiliki kapasitas penyaluran yang memadai. Jumlah gas menentukan keefektifan desain ejektor.<\/p>\n<p>Telah diamati bahwa pada degasser saluran dengan rotor gas, rotor gas tersebut dapat menyalurkan jumlah gas yang sesuai ke logam cair, namun gas cenderung dilepaskan dari rotor secara tidak teratur, sehingga menyebabkan logam cair memercik ke permukaan dan efisiensi yang rendah. Beberapa degasser trough menggunakan beberapa ejektor gas putar yang relatif kecil di sepanjang bagian trough untuk mencapai efek reaktor aliran kontinu atau pseudo \u201cplug\u201d, bukan reaktor aliran campuran penuh atau tangki yang diaduk secara terus-menerus. Efek dari jenis reaktor ini adalah deaerator kotak dalam. Dalam reaktor aliran plug yang ideal, tidak terjadi pencampuran, dan elemen fluida keluar dalam urutan yang sama dengan saat mereka masuk.<\/p>\n<p>Namun, degasser berbentuk palung dengan beberapa ejektor gas berputar berukuran kecil tidak dapat memasukkan gas dalam jumlah besar berupa gelembung halus ke dalam logam cair tanpa menimbulkan ketidakteraturan aliran gas yang jelas, sehingga tidak cocok untuk aplikasi yang memerlukan gelembung halus. Bentuknya adalah transportasi gas alam skala besar. Saat menggunakan gas klorin sebagai agen degassing, degasser kotak dalam menghilangkan hidrogen dan inklusi dari logam cair lebih efektif daripada degasser berbentuk palung. Ketika fluks garam digunakan sebagai pengganti klorin, hasil yang sama dapat diharapkan. Oleh karena itu, degasser tipe kotak dalam harus digunakan untuk mengurangi percikan pada permukaan logam cair dan memaksimalkan efisiensi penghilangan gas terlarut serta inklusi.<\/p>","protected":false},"excerpt":{"rendered":"<p>On-line molten metal degassing is usually accomplished by blowing an inert gas containing a certain percentage of chlorine (Cl2) gas. Chlorine forms small bubbles in molten metal. Degassing is usually carried out in a continuous operation before casting, which itself can be carried out continuously. A mixture of inert gas and Cl2 (chlorine) is injected [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4846,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-4845","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>Molten Metal Degassing by Rotory Degassing Equipment<\/title>\n<meta name=\"description\" content=\"On-line molten metal degassing is usually accomplished by blowing an inert gas containing a certain percentage of chlorine (Cl2) gas.\" \/>\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.aluminiumceramicfiber.com\/id\/molten-metal-degassing\/\" 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