{"id":8715,"date":"2021-03-29T01:21:26","date_gmt":"2021-03-29T01:21:26","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=8715"},"modified":"2021-03-29T01:21:26","modified_gmt":"2021-03-29T01:21:26","slug":"flux-removes-calcium-in-liquid-aluminium","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/id\/flux-removes-calcium-in-liquid-aluminium\/","title":{"rendered":"Flux Menghilangkan Kalsium dalam Aluminium Cair"},"content":{"rendered":"

Flux Menghilangkan Kalsium dalam Aluminium Cair<\/strong> digunakan untuk menggambarkan seluruh proses pengolahan aluminium cair yang melibatkan penggunaan senyawa-senyawa.
\nSenyawa-senyawa ini umumnya bersifat anorganik dan dapat menjalankan berbagai fungsi, seperti penghilangan gas, pengurangan kadar kalsium, penghilangan kotoran, serta pembentukan paduan. Fluks aluminium cair juga mencakup perlakuan terhadap logam cair dengan gas inert atau gas reaktif untuk menghilangkan inklusi atau kontaminan gas dari logam tersebut.<\/p>\n

Komposisi kimia bahan pelebur<\/strong>
\nFlux Aluminium Cair<\/a> (dalam bentuk bubuk, serpihan, atau butiran) biasanya terdiri dari klorida dan fluorida serta bahan tambahan lain untuk memberikan sifat-sifat khusus padanya.<\/p>\n

Sebagian besar bahan pelebur terbuat dari campuran garam KCl dan NaCl, yang membentuk campuran eutektik bersuhu rendah (665\u00ba\u0421). Bahan lain yang umum digunakan dalam bahan pelebur adalah natrium fluorida (NaF).
\nBahan pelapis biasa mengandung sekitar 47,5% NaCl, 47,5% KCl, dan 5% garam fluorida. Suhu leleh yang lebih rendah sangat penting, karena hal itu akan meningkatkan kelancaran aliran bahan pelapis tersebut.<\/p>\n

\"Flux<\/p>\n

Peran fluorida dalam fluks<\/strong>
\nGaram fluorida logam alkali berfungsi sebagai surfaktan, yang di satu sisi mengurangi tegangan permukaan antara fluks dan logam, serta di sisi lain mengurangi tegangan permukaan antara fluks dan oksida. Garam klorida menunjukkan karakteristik ini dalam tingkat yang lebih rendah.<\/p>\n

Garam fluorida logam alkali memiliki kemampuan untuk melarutkan oksida (meskipun hanya dalam skala kecil), yang memungkinkannya menembus lapisan oksida di dalam terak dan menumpuk di dinding tungku.
\nHal ini menghasilkan peningkatan kemampuan basah, yang mempercepat pemisahan inklusi oksida dalam cairan logam serta pemisahan logam aluminium dalam ampas timah.<\/p>\n

Fluks eksotermik<\/strong>
\nBahan tambahan nitrat (seperti KNO\u2083) dapat menyebabkan pelepasan panas. Oksigen yang dilepaskan akibat dekomposisi nitrat bereaksi dengan aluminium logam sehingga membentuk Al\u2082O\u2083 dan menghasilkan panas yang besar.
\nHal ini secara lokal meningkatkan laju perputaran dan mempercepat proses pemisahan dari oksida logam.<\/p>\n

Degas Flux<\/strong>
\nBeberapa senyawa akan terurai saat gas tersebut dilepaskan, seperti klorin atau karbon dioksida.
\nJika aliran-aliran ini masuk ke bawah permukaan cairan logam, gelembung akan terbentuk, sehingga mengurangi kandungan hidrogen dalam cairan logam tersebut.
\nSenyawa yang paling terkenal di antara senyawa-senyawa tersebut adalah heksakloroetana (C\u2082Cl\u2086), yang melepaskan klorin (Cl\u2082) dan senyawa AlCl\u2083 dalam bentuk gas.<\/p>\n

Kelembapan di atmosfer bereaksi dengan aluminium cair sehingga membentuk lapisan oksida, dan atom hidrogen terbentuk di antara atom-atom aluminium. Oksida-oksida tersebut tidak hanya tertinggal di permukaan, tetapi sebagian di antaranya juga jatuh ke dalam cairan aluminium, dan ketika suhu menurun, sebagian di antaranya mengandung gelembung hidrogen.<\/p>\n

Selama proses pengecoran, lapisan oksida pada permukaan aluminium terbentuk. Sebagian dari oksida tersebut jatuh ke dalam cairan logam. Oksida-oksida ini dapat berbentuk lapisan yang memiliki rasio panjang dan lebar terhadap ketebalan yang sangat tinggi. Beberapa lapisan tersebut mungkin mengandung tetesan aluminium di dalamnya.<\/p>","protected":false},"excerpt":{"rendered":"

Flux Removes Calcium In Liquid Aluminium is used to describe all aluminum melt processing in which compounds are used. These compounds are usually inorganic and can perform multiple functions such as degassing, reducing calcium, removing impurities and forming alloys. Liquid Aluminium Flux also includes treating…<\/p>","protected":false},"author":1,"featured_media":8716,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[57320],"yoast_head":"\nFlux Removes Calcium In Liquid Aluminium | Adtech China<\/title>\n<meta name=\"description\" content=\"Flux Removes Calcium In Liquid Aluminium is used to describe all aluminum melt processing in which compounds are used. sales@adtechamm.com\" \/>\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.adtechamm.com\/id\/flux-removes-calcium-in-liquid-aluminium\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flux Removes Calcium In Liquid Aluminium | Adtech China\" \/>\n<meta property=\"og:description\" content=\"Flux Removes 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