写真フィルム法による急冷凝固するAlの冷却速度の測定

概要

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It is difficult to measure the cooling rate of the metal that is cooling or solidifying on a revolving roll. In this study, the temperature of aluminium was measured by photographic film method, and then the cooling rate was decided. Aluminium of 99.99% was photographed which was cooling or solidifying on a roll made of stainless steel. The transparent density of the image of aluminium on the photographic film was measured. The temperature of aluminium was dicided by referring to the relation of temperature-density prepared. Furthermore, the cooling rate of aluminium was obtained from the temperature of aluminium and the cooling time which was decided by using the revolution of the roll. The range of the colling rate is 40〜780℃/s, which is obtained from this study. This range contains the larger cooling rate than the cooling rate obtained from the dendrite arm spacing. It is clarified that the measuring of temperature by using the photographic film method is useful for the decision of cooling rate.
岐阜工業高等専門学校の論文
2000-03-01