Patent ID: 9604267
Date: 2017-03-28
CPC Classifications: B21B,Y10T

Claim:
1. A method for producing a magnesium alloy sheet in which a raw material sheet composed of a magnesium alloy is rolled and the obtained long rolled sheet is coiled to produce a coiled magnesium alloy sheet, the method comprising: a preheating step of heating the raw material sheet; a rolling step of rolling the heated raw material sheet with a reduction roll; a heat-insulating step of conveying the heated raw material sheet through a heat-insulating cover disposed between the preheating step and the rolling step; measuring a temperature of the reduction roll, wherein the temperature of the reduction roll is controlled by comparing the temperature of the reduction roll and the temperature of the heated raw material sheet; and a coiling step of coiling the rolled sheet, wherein the heating temperature of the raw material sheet in the preheating step is 280° C. or less, the surface temperature of the reduction roll in the rolling step is 230° C. or more and 290° C. or less, the preheating step, the rolling step, and the coiling step are repeatedly performed in a continuous manner multiple times, wherein a lubricant is used in the rolling step and the lubricant on the surface of the raw material sheet is smoothed just before the raw material sheet is supplied to the reduction roll, and a temperature of the heated raw material sheet is measured after the preheating step and before the rolling step.