{"id":5946,"date":"2019-10-17T02:30:52","date_gmt":"2019-10-17T02:30:52","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=5946"},"modified":"2019-10-17T02:30:52","modified_gmt":"2019-10-17T02:30:52","slug":"molten-metal-foam-filter","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/id\/molten-metal-foam-filter\/","title":{"rendered":"Filter Busa Logam Cair"},"content":{"rendered":"

Filter Busa Logam Cair<\/p>\n

Peleburan paduan aluminium menghadirkan sejumlah kesulitan. Kepadatan paduan aluminium yang rendah berkontribusi terhadap pembentukan lapisan gas dan porositas, karena gas dengan mudah menembus ke dalam medium logam dan mengisinya hingga jenuh. Aluminium mudah teroksidasi. Sulit untuk membersihkan logam cair dari terak dan oksida.<\/p>\n

Terak dan oksida tetap berada dalam cairan logam dalam bentuk partikel-partikel halus yang tersuspensi, yang secara signifikan memengaruhi kualitas paduan tersebut.<\/p>\n

Penggunaan bahan pelebur (klorida seng, kriolit) atau bahan pengubah juga tidak memungkinkan peleburan dibersihkan sepenuhnya, karena sulit untuk memisahkan bahan-bahan tersebut dari cairan logam.<\/p>\n

Dalam proses pembuatan paduan aluminium, kemurnian bahan baku dan ketepatan komposisi bahan baku yang digunakan sangatlah penting.
\nSeringkali, jumlah kontaminan berbahaya yang sangat sedikit pun dapat secara signifikan mengurangi sifat mekanis paduan logam tersebut.
\nSemua ini menuntut pemilahan sampah yang sangat cermat. Tanpa proses peleburan ulang, bahan-bahan tersebut hanya dapat digunakan jika komposisi kimianya diketahui.
\nSisa logam yang asal-usulnya tidak diketahui atau yang tidak disortir dengan baik serta hasil peleburan ulang (paduan sekunder) yang mengandung banyak oksida dan pengotor berbahaya harus dilebur kembali menjadi batangan logam.
\nSelama proses peleburan ulang, logam cair dibersihkan dari kotoran dan dilakukan analisis kimia.<\/p>\n

Filter Busa Logam Cair<\/a><\/p>\n

Proses peleburan dan pengecoran aluminium dilakukan dengan mematuhi secara ketat ketentuan suhu serta pengendalian pemanasan paduan yang konstan dan akurat.
\nBahkan pemanasan berlebih yang ringan maupun penuaan berlebihan pada paduan pada suhu tinggi dapat menyebabkan terjadinya saturasi berlebihan terhadap gas dan oksida, serta munculnya lapisan penyusutan.
\nUntuk menghilangkan oksida dan terak, perlu menggunakan bahan pelebur yang bekerja baik secara kimiawi maupun mekanis.<\/p>\n

Filter Busa Logam Cair<\/p>\n

\"Filter<\/p>","protected":false},"excerpt":{"rendered":"

Molten Metal Foam Filter Smelting aluminum alloys presents a number of difficulties. The low density of aluminum alloys contributes to the formation of gas shells and porosity, since gases easily penetrate into the metal medium and saturate it. Aluminum is easily oxidized. It is difficult…<\/p>","protected":false},"author":1,"featured_media":5947,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[26524],"tags":[],"yoast_head":"\nMolten Metal Foam Filter | Adtech China<\/title>\n<meta name=\"description\" content=\"Smelting aluminum alloys presents a number of difficulties. 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