{"id":2995,"date":"2020-09-24T05:39:29","date_gmt":"2020-09-24T05:39:29","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=2995"},"modified":"2020-09-24T05:39:29","modified_gmt":"2020-09-24T05:39:29","slug":"aluminum-cast-rolled-sheet-defects","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/aluminum-cast-rolled-sheet-defects\/","title":{"rendered":"Cacat pada Lembaran Aluminium Cor-Gulung"},"content":{"rendered":"<p>Kualitas permukaan lembaran aluminium cor-gulung umumnya ditandai dengan cacat berupa garis-garis memanjang dan gelombang melintang. Penyebab utama munculnya garis-garis memanjang pada permukaan pelat adalah sebagai berikut: jarak antara rol dan nosel terlalu kecil, yang menyebabkan gesekan antara rol dan nosel pengecoran; kerusakan lokal pada nosel pengecoran atau terak yang menyebabkan kristalisasi tidak merata; serta adanya garis pada permukaan rol atau rol pemandu. Untuk memastikan kualitas pelat vertikal dan merumuskan parameter proses secara tepat sebelum pembuatan pelat vertikal, garis memanjang tersebut tidak akan muncul dalam proses produksi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3030\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/Aluminum-Cast-rolled-Sheet-Defects-1.jpg\" alt=\"Cacat pada Lembaran Aluminium Cor-Gulung\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/Aluminum-Cast-rolled-Sheet-Defects-1.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/09\/Aluminum-Cast-rolled-Sheet-Defects-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Cacat berupa riak melintang pada lembaran aluminium cor-gulung terutama disebabkan oleh perubahan meniskus di bagian depan <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/portfolio\/caster-tip\/\">ujung roda<\/a> dan nosel. Ada banyak faktor yang menyebabkan perubahan meniskus dalam proses pengecoran dan penggulungan, yang terutama disebabkan oleh berat sendiri aluminium cair itu sendiri, fluktuasi dalam proses pasokan aluminium cair, serta getaran mesin itu sendiri. Untuk mengendalikan perubahan berat sendiri aluminium cair, perlu untuk menurunkan ketinggian cairan pada kotak depan sedapat mungkin.<\/p>\n<p>Mengendalikan fluktuasi dalam proses pasokan aliran, mengendalikan aliran cairan aluminium yang masuk ke kotak depan dan aliran cairan aluminium yang masuk ke nosel pengecoran melalui saluran aliran, agar kedua aliran tersebut tetap konsisten. Untuk mengendalikan getaran mekanis, bagian-bagian yang tetap harus dipasang dengan kokoh dan sambungan-sambungan harus disesuaikan secara akurat. Dalam proses produksi, ketinggian cairan di kotak depan diturunkan hingga minimum setelah pelat vertikal, dan tidak ditemukan cacat tropis, bahkan jika ketinggian cairan di kotak depan hanya memenuhi persyaratan tekanan statis pasokan cairan aluminium. Umumnya, ketinggian cairan di kotak depan diturunkan hingga titik di mana cacat hampir muncul, kemudian ketinggian cairan dinaikkan sebesar 1,0 mm\u20131,5 mm. Dua metode pengendalian ketinggian cairan yang menggabungkan pengendalian inframerah dan pengendalian stabilisator arus diterapkan untuk memastikan stabilitas ketinggian cairan di kotak depan.<\/p>","protected":false},"excerpt":{"rendered":"<p>The surface quality of aluminum cast-rolled sheet defects are mainly longitudinal stripe and transverse ripple. The main reasons for the longitudinal streaks on the plate surface are as follows: the gap between the roller and the nozzle is too small, which causes friction between the roll and the casting nozzle, the local damage of the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3030,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-2995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Cast-rolled Sheet Defects in Casting and Rolling Process<\/title>\n<meta name=\"description\" content=\"The aluminum cast-rolled sheet defects are mainly longitudinal stripe and transverse ripple, control the aluminum liquid flowing...\" \/>\n<meta name=\"robots\" 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