縦型高速双ロールキャスターによるリサイクル5182合金薄板の作製(<小特集>M&P2009機械材料・材料加工部門技術講演会)

概要

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A vertical type twin roll caster for strip casting of aluminum alloys was devised. The strip, which was thinner than 3mm, could be cast at speeds higher than 60m/min. Features of the twin roll caster are as below. Mild steel rolls were used in order to increase the casting speed. Roll coating occurs in casting of Al-Mg alloy. Therefore, the lubricant, that resists heat transfer between the roll and strip, was not used in this study. Low superheat casting was carried out in order to improve microstructure of the strip. The low temperature casting was useful to make the intermatallic of impurity fine. In the present study, effect of a high-speed and high-cooling rate twin roll caster on the recycled aluminum alloy was investigated. Fe, which content increases in the recycled aluminum alloy, was added as impurity to 5182. The roll caster was useful to decrease the influence of impurity Fe.
2010-06-25