{"id":4806,"date":"2020-12-17T08:41:28","date_gmt":"2020-12-17T08:41:28","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=4806"},"modified":"2020-12-17T08:41:28","modified_gmt":"2020-12-17T08:41:28","slug":"molten-metal-degassing-treatment","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/molten-metal-degassing-treatment\/","title":{"rendered":"Proses Penghilangan Gas pada Logam Cair"},"content":{"rendered":"<p>Salah satu cara untuk menghilangkan gas dan kotoran dari logam cair adalah melalui proses degassing. Proses fisik ini melibatkan penyuntikan gas fluks ke dalam logam cair. Hidrogen masuk ke dalam gelembung yang dibersihkan melalui difusi melalui logam cair dan masuk ke dalam gelembung tersebut. Di dalam gelembung, hidrogen menempel pada permukaan gelembung dan teradsorpsi ke dalam gelembung itu sendiri. Hidrogen tersebut kemudian dikeluarkan dari logam cair melalui gelembung-gelembung tersebut.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4807\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing-Treatment.jpg\" alt=\"Proses Penghilangan Gas pada Logam Cair\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing-Treatment.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Degassing-Treatment-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Tentu saja, terdapat kebutuhan yang sangat besar untuk meningkatkan proses penghilangan gas pada logam cair guna menghilangkan atau meminimalkan pengotor-pengotor tersebut pada produk cor akhir, terutama pada aluminium cair, khususnya ketika logam yang dihasilkan digunakan dalam produk dekoratif seperti strip dekoratif atau memiliki spesifikasi kunci pada produk, seperti komponen tempa dan ekstrusi pesawat terbang, serta lembaran logam ringan. Pengotor-pengotor yang disebutkan di atas menyebabkan hilangnya sifat-sifat produk cor akhir, seperti kekuatan tarik dan ketahanan terhadap korosi.<\/p>\n<p>Proses pengolahan degassing logam cair yang ketat (seperti penggunaan fluks gas atau filtrasi cairan logam) telah meminimalkan kemunculan cacat semacam itu. Namun, meskipun proses-proses tersebut secara umum berhasil mengurangi kemunculan cacat tersebut hingga tingkat yang memuaskan, proses-proses tersebut ternyata tidak efektif atau tidak ekonomis. Proses peleburan yang dilakukan secara konvensional, seperti peleburan tungku umum, melibatkan pengenalan gas peleburan ke dalam tungku penampung yang berisi sejumlah logam cair.<\/p>\n<p>Prosedur ini mensyaratkan agar logam cair dipertahankan di dalam tungku selama waktu yang cukup lama sambil mengalirkan gas fluks, sehingga logam yang sedang diproses tetap stabil dan dapat diolah. Langkah ini memiliki banyak kelemahan, di antaranya efisiensi yang menurun dan biaya yang meningkat akibat waktu tunggu tungku yang lama selama operasi fluks. Yang lebih penting lagi, karena cakupan fluks terhadap logam cair yang buruk, kurangnya efisiensi operasi fluks mengakibatkan pembentukan gas akibat ukuran gelembung yang besar dan dispersi gelembung yang buruk dalam cairan logam. Faktor-faktor lain termasuk pembatasan lokasi tungku yang memungkinkan kotoran masuk kembali ke dalam logam cair sebelum pengecoran, serta emisi yang tinggi akibat jumlah fluks yang besar yang dibutuhkan dan lokasi sirkulasinya.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4770\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Refining-Flux.jpg\" alt=\"Flux Pemurnian Logam Cair\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Refining-Flux.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Refining-Flux-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Untuk memperoleh manfaat ekonomi dan meningkatkan produktivitas, diperlukan adanya <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/degassing-system\/\">sistem penghilang gas<\/a>\u00a0serta sistem penyaringan yang mampu memproses logam cair secara terus-menerus dengan laju yang sesuai dengan praktik pengecoran. Karena ukuran unit pemrosesan yang besar, diperlukan pemanasan tambahan untuk mencegah logam cair membeku selama proses pemrosesan.<\/p>","protected":false},"excerpt":{"rendered":"<p>One way to remove gases and impurities from molten metal is through degassing treatment. The physical process involves injecting flux gas into the melt. Hydrogen enters the purged bubble by diffusing through the melt and entering the bubble. In the bubble, the hydrogen adheres to the surface of the bubble and is adsorbed into the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4807,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-4806","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 Treatment | Degasiing System<\/title>\n<meta name=\"description\" content=\"Strict molten metal degassing treatment processes (such as gas flux or melt filtration) have minimized the incidence of such defects.\" \/>\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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