{"id":7014,"date":"2020-07-10T02:12:24","date_gmt":"2020-07-10T02:12:24","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=7014"},"modified":"2020-07-10T02:12:24","modified_gmt":"2020-07-10T02:12:24","slug":"aluminum-casting","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/id\/aluminum-casting\/","title":{"rendered":"Pengecoran Aluminium"},"content":{"rendered":"

Pengecoran Aluminium di Tiongkok<\/p>\n

Bahan baku dalam industri kami sehari-hari disebut ingot aluminium, yang seharusnya disebut \u201cingot aluminium untuk peleburan ulang\u201d sesuai dengan standar nasional (GB\/T 1196-2008), namun semua orang sudah terbiasa menyebutnya \u201cingot aluminium\u201d.
\nBahan ini diproduksi dengan metode elektrolisis menggunakan campuran alumina dan krioit.
\nSetelah ingot aluminium digunakan dalam aplikasi industri, terdapat dua kategori utama: paduan aluminium cor dan paduan aluminium yang diolah.
\nPengecoran aluminium dan paduan aluminium adalah produk pengecoran aluminium yang dihasilkan melalui metode pengecoran.
\nAluminium dan paduan aluminium yang telah dibentuk adalah produk olahan yang dihasilkan melalui metode pemrosesan bertekanan: lembaran, pita, foil, tabung, batang, profil, kawat, dan hasil tempa.
\nBerdasarkan standar nasional, ingot aluminium untuk peleburan ulang dikelompokkan menjadi 8 kelas berdasarkan komposisi kimianya, yaitu Al99.90, Al99.85, Al99,70, Al99,60, Al99,50, Al99,00, Al99,7E, dan Al99,6E\u201d (Catatan: angka setelah Al menunjukkan kandungan aluminium).
\nBeberapa orang menyebutnya aluminium \u201cA00\u201d, yang sebenarnya adalah aluminium dengan kemurnian 99,7%. Di pasar London, bahan ini disebut \u201caluminium standar\u201d.<\/p>\n

Bahan baku yang digunakan adalah aluminium murni dan aluminium daur ulang, serta ditambahkan unsur-unsur lain sesuai dengan standar internasional atau persyaratan khusus, seperti: silikon (Si), tembaga (Cu), magnesium (Mg), besi (Fe)\u2026 Hal ini bertujuan untuk meningkatkan kemampuan pengecoran dan sifat kimia aluminium murni, serta mengatasi kekurangan sifat fisik paduan tersebut.<\/p>\n

Gambaran Umum Klasifikasi
\nIngot aluminium dibagi menjadi tiga jenis: ingot aluminium untuk peleburan ulang, ingot aluminium kemurnian tinggi, dan ingot paduan aluminium, berdasarkan komposisi yang berbeda; sedangkan berdasarkan bentuk dan ukurannya, ingot aluminium dapat dibagi menjadi ingot batang, ingot bulat, ingot lempeng, dan ingot berbentuk T.
\nBeberapa jenis ingot aluminium yang umum
\nIngot aluminium untuk peleburan ulang\u201415 kg, 20 kg (\u226499,801 TP3T Al):
\nIngot aluminium berbentuk T \u2013 500 kg, 1.000 kg (\u226499,801 TP3TAl):
\nIngot aluminium kemurnian tinggi\u201410 kg, 15 kg (99,901 TP3T\u201399,9991 TP3T Al);
\nIngot paduan aluminium \u2013 10 kg, 15 kg (Al\u2013Si, Al\u2013Cu, Al\u2013Mg);
\nIngot pelat\u2013500\u20131.000 kg (untuk pembuatan pelat);
\nIngot bulat \u2013 30\u201360 kg (untuk proses penarikan).<\/p>\n

\"Pengecoran<\/p>\n

Tentu saja, selama proses pengecoran aluminium, diperlukan penggunaan banyak mesin, seperti unit penghilang gas, unit CFF, filter busa keramik<\/a>, pencucian, fluks pemurnian, dan sebagainya.<\/p>\n

Proses produksi ingot aluminium terdiri dari penambangan bauksit, produksi alumina, elektrolisis aluminium, dan tahapan produksi lainnya.
\nBauksit ditambang terlebih dahulu, kemudian diolah menjadi bubuk bauksit melalui proses pencucian, penggilingan, dan proses lainnya, lalu alumina diperoleh melalui empat proses kompleks, seperti proses pemanggangan. Terdapat tiga jenis utama bauksit yang menghasilkan alumina: gibbsit, diaspor, dan boehmit monohidrat.
\nDari total cadangan bauksit global yang telah terbukti, 92% merupakan bauksit jenis laterit yang telah mengalami pelapukan, termasuk dalam jenis gibbsit; bauksit-bauksit ini memiliki karakteristik kandungan silikon yang rendah, kandungan besi yang tinggi, serta rasio aluminium terhadap silikon yang tinggi, dan terkonsentrasi di Afrika Barat, Oseania, serta Amerika Tengah dan Selatan.
\nSisa 8% merupakan bauksit sedimen, yang termasuk jenis boehmit dan diaspor, dengan kadar rendah hingga sedang, yang sebagian besar tersebar di Yunani, bekas Yugoslavia, dan Hongaria.<\/p>\n

Karena karakteristik ketiga jenis bauksit tersebut berbeda-beda, perusahaan-perusahaan produsen alumina telah menerapkan proses produksi yang berbeda-beda, yang terutama meliputi metode Bayer, metode sintering soda-kapur, dan metode gabungan Bayer-sintering.
\nSecara umum, bauksit bermutu tinggi diolah dengan metode Bayer, sedangkan bauksit bermutu rendah diolah dengan metode gabungan atau metode sintering.
\nBerkat prosesnya yang sederhana dan konsumsi energinya yang rendah, metode Bayer telah menjadi metode terpenting yang saat ini digunakan dalam produksi alumina, dan produksinya menyumbang sekitar 95% dari total produksi alumina global.
\nDi bawah pengaruh arus listrik yang kuat, aluminium oksida mengalami elektrolisis sehingga menghasilkan logam aluminium. Proses ini disebut produksi aluminium secara elektrolitik.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum Casting in China The raw material in our daily industry is called aluminum ingot, which should be called “aluminum ingot for remelting” according to the national standard (GB\/T 1196-2008), but everyone is used to “aluminum ingot”. It is produced by electrolytic method using alumina-cryolite….<\/p>","protected":false},"author":1,"featured_media":7015,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[1767,1760,1761],"yoast_head":"\nAluminum Casting | Adtech China Casting Process<\/title>\n<meta name=\"description\" content=\"Aluminum Casting in China--The raw material in our daily industry is called aluminum ingot, which should be called "aluminum ingot for remelting"\" \/>\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\/aluminum-casting\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminum Casting | Adtech China Casting Process\" \/>\n<meta property=\"og:description\" content=\"Aluminum Casting 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