{"id":7393,"date":"2020-10-14T06:16:19","date_gmt":"2020-10-14T06:16:19","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=7393"},"modified":"2022-06-15T05:36:55","modified_gmt":"2022-06-15T05:36:55","slug":"aluminium-degassing-process-in-casting","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/id\/aluminium-degassing-process-in-casting\/","title":{"rendered":"Proses Penghilangan Gas pada Aluminium dalam Proses Pengecoran"},"content":{"rendered":"

Proses Penghilangan Gas pada Aluminium dalam Proses Pengecoran dapat secara signifikan meningkatkan kualitas dan hasil produksi produk aluminium, sehingga meningkatkan keuntungan pabrik peleburan dan pengecoran aluminium.<\/p>\n

Produsen sistem degassing aluminium, Adtech, menjelaskan alasan adanya unsur H dalam lelehan aluminium sebagai berikut.
\nHidrogen dapat dibakar dalam tungku gas, sedangkan kondensat pada alat, fluks, dan aditif paduan dimasukkan ke dalam aluminium cair.
\nNamun, pada umumnya, hidrogen masuk ke dalam aluminium cair melalui kelembapan udara. Kelarutan hidrogen meningkat seiring dengan meningkatnya kelembapan relatif udara.<\/p>\n

Mengingat bobotnya yang ringan, aluminium merupakan logam yang sering digunakan karena kekuatannya yang relatif tinggi.
\nNamun, saat melakukan pengecoran aluminium, pengotor yang disebut inklusi dapat menyebabkan titik-titik lemah pada produk.
\nAda banyak alasan di balik adanya inklusi-inklusi ini, namun keberadaan hidrogen merupakan salah satu yang paling umum.
\nHidrogen dapat larut dalam aluminium cair, dan dapat menembus aluminium cair hampir semudah udara.
\nSaat logam cair mendingin dan mengeras, hidrogen mengalir dari daerah bertekanan tinggi ke daerah bertekanan rendah.
\nLogam tersebut menggumpal dan membentuk kantong-kantong gas, yang kemudian menjadi inklusi dan titik-titik lemah saat logam tersebut mengeras.
\nProses Penghilangan Gas pada Aluminium dalam Pengecoran adalah proses yang digunakan untuk menghilangkan hidrogen dari aluminium cair.<\/p>\n

\"Proses<\/p>\n

Proses penghapusan<\/strong>
\nSeiring meningkatnya permintaan akan produk aluminium berkualitas tinggi, terutama di industri kedirgantaraan, kebutuhan untuk mengurangi inklusi pada produk cetakan pun semakin meningkat.
\nSalah satu metode yang umum digunakan untuk menghilangkan hidrogen adalah dengan memasukkan nitrogen bertekanan ke dalam aluminium cair.
\nHidrogen tersebut tertarik ke gelembung-gelembung nitrogen, kemudian diserap oleh aluminium dan dilepaskan ke permukaan.
\nGas argon juga sangat efektif, tetapi karena biaya yang tinggi terkait dengan gas ini, nitrogen lebih disukai.<\/p>\n

Berputar Unit Penghilang Gas<\/a><\/strong>
\nImpeler berputar tersebut bekerja dengan cara memperluas luas permukaan gas inert yang dimasukkan ke dalam logam.
\nGelembung-gelembung nitrogen yang lebih kecil yang dihasilkan melalui proses impeler memiliki luas permukaan total yang lebih besar dan menyerap lebih banyak hidrogen.
\nGangguan pada permukaan bawah yang disebabkan oleh gelembung-gelembung yang lebih kecil juga membuat lebih sedikit hidrogen yang terserap kembali ke dalam logam dari kelembapan atmosfer.
\nProses Penghilangan Gas pada Aluminium dalam Proses Pengecoran, dilakukan melalui poros berputar dan rotor untuk menghilangkan gas inert atau gas yang secara kimiawi inert (argon, nitrogen).
\nEnergi dari poros yang berputar menyebabkan terbentuknya sejumlah besar gelembung-gelembung kecil, yang menghasilkan rasio luas permukaan terhadap volume yang sangat tinggi.
\nLuas permukaan yang besar mempercepat difusi hidrogen ke dalam gelembung secara cepat dan efektif, sehingga menyeimbangkan aktivitas hidrogen pada fase cair dan gas.
\nDibandingkan dengan proses degassing dengan fluks, mesin degassing rotari mampu menghilangkan hidrogen secara lebih tuntas.
\nSelain itu, alat penghilang gas tipe rotari ini tidak menggunakan garam klorin dan fluorida yang berbahaya.
\nMesin degassing rotari juga dapat menggabungkan fungsi degassing dan penambahan fluks.
\nDalam hal ini, gas inert berfungsi sebagai pembawa fluks granular. Metode ini disebut injeksi fluks.<\/p>\n

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

Aluminium Degassing Process In Casting can greatly improve the quality and yield of aluminum products, thereby increasing the profitability of aluminum melting and casting plants. Aluminium Degassing manufacturer Adtech explained the reason for H in aluminum melt in this way. Hydrogen can be burned in…<\/p>","protected":false},"author":1,"featured_media":7394,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[45391],"tags":[],"yoast_head":"\nAluminium Degassing Process In Casting | Adtech China<\/title>\n<meta name=\"description\" content=\"Aluminium Degassing Process In Casting can greatly improve the quality and yield of aluminum products, thereby increasing the profitability of aluminum...\" \/>\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\/aluminium-degassing-process-in-casting\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminium Degassing Process In Casting | Adtech China\" \/>\n<meta property=\"og:description\" content=\"Aluminium Degassing 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