{"id":7643,"date":"2021-11-13T07:20:04","date_gmt":"2021-11-13T07:20:04","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=7643"},"modified":"2021-11-12T07:25:43","modified_gmt":"2021-11-12T07:25:43","slug":"casting-and-rolling-process","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/casting-and-rolling-process\/","title":{"rendered":"Proses Pengecoran dan Penggulungan"},"content":{"rendered":"

Proses Produksi Pengecoran dan Penggulungan Industri: Logam cair di dalam tungku stasioner dibersihkan dari gas dan teraknya dihilangkan melalui sistem penghilangan gas secara online. Setelah disaring oleh sistem penyaringan, aluminium cair dialirkan secara stabil ke nosel pengecoran melalui sistem pengatur ketinggian cairan. Aluminium cair tersebut kemudian dialirkan dari nosel pengecoran ke celah rol mesin pengecoran. Setelah proses pengecoran dan penggulungan berkelanjutan, logam tersebut diubah menjadi pelat cor-gulung, dan setelah dipotong, digulung menjadi gulungan cor-gulung oleh mesin penggulung.<\/p>\n

\"Proses<\/p>\n

Dalam proses produksi pengecoran dan penggulungan, perbedaan suhu antara permukaan dan bagian tengah relatif besar; lapisan permukaan memiliki suhu rendah sehingga tidak mudah mengalami deformasi, sedangkan suhu di bagian tengah tinggi sehingga mudah mengalami deformasi. Saat memasuki zona deformasi dari zona pengecoran, logam tersebut digunakan untuk proses penggulungan; logam di permukaan menempel pada permukaan rol pengecoran, sedangkan logam di bagian tengah lempengan bergeser ke belakang relatif terhadap logam di permukaan.<\/p>\n

Akibat deformasi dan aliran yang tidak merata, lapisan luar cangkang yang telah mengeras di dalam rongga cair mengalami tegangan tarik. Di area pengecoran, ketika rongga cair dangkal, cangkang yang telah mengeras menjadi lebih tebal dan kemungkinan terjadinya retakan lebih kecil. Sebaliknya, ketika rongga cair lebih dalam, lapisan cangkang yang telah mengeras menjadi lebih tipis. Ketika tegangan tarik yang dihasilkan oleh deformasi yang tidak merata cukup besar, lapisan cangkang yang telah mengeras akan retak di titik lemahnya, dan kemudian retakan tersebut meluas hingga membentuk retakan.<\/p>\n

Apabila lelehan mengalami pemanasan berlebih atau telah dimatikan terlalu lama, titik-titik nukleasi dalam lelehan akan berkurang, sehingga retakan cenderung terjadi di batas-batas butir.<\/p>\n

Apabila kecepatan pengecoran-penggulungan lebih tinggi atau suhu kotak depan lebih tinggi, area pengecoran-penggulungan menjadi lebih luas, dan nozel pengisi<\/a> rusak sebagian, sehingga rongga cairan menjadi lebih dalam, dan kemungkinan besar akan muncul retakan pada permukaan lembaran yang dicetak dan digulung.<\/p>\n

Metode Pencegahan<\/strong><\/p>\n

Atur gasket pada nosel pengumpanan dengan tepat untuk menjaga kondisi permukaan rol tetap baik dan membuat distribusi suhu pada bagian depan kristalisasi menjadi merata.<\/p>\n

Kurangi zona pengecoran-penggulungan secara tepat, kurangi kecepatan pengecoran-penggulungan serta suhu kotak depan, sehingga lapisan luar yang telah mengeras di zona pengecoran-penggulungan menjadi lebih tebal, dan tidak mudah robek selama proses deformasi penggulungan.<\/p>\n

Cobalah untuk memperpendek waktu peleburan guna menghindari terjadinya panas berlebih pada cairan logam. Bahan pemurnian digunakan untuk meningkatkan kemampuan nukleasi, menghaluskan butiran, meningkatkan plastisitas, dan mengurangi kecenderungan retak.<\/p>\n

Jika nosel ujung pengecoran rusak, segera ganti nosel pengecoran tersebut.<\/p>","protected":false},"excerpt":{"rendered":"

Industrial Casting and Rolling Production Process: The molten metal in the stationary furnace is degassed and slag removed by the online degassing system. After the filtering system is filtered, the molten aluminum is stably fed into the casting nozzle through the liquid level control system. It is transported from the casting nozzle to the roll […]<\/p>\n","protected":false},"author":1,"featured_media":7644,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[24107,24108],"class_list":["post-7643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-casting-and-rolling-process","tag-feeding-tip-and-nozzle"],"yoast_head":"\nCasting and Rolling Process, Feeding Tip and Nozzle<\/title>\n<meta name=\"description\" content=\"In the process of casting and rolling production, the temperature difference between the surface and the center is relatively large.\" \/>\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.aluminiumceramicfiber.com\/id\/casting-and-rolling-process\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" 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