312 Production of Magnesium Alloys strip in Melt Drag process

概要

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Melt Drag process is one of Rapid Cooling Solidified Methods with single roll. This method can cause two effects : the improvement of the quality by rapid cooling solidification and the simplification of process. The experimental device that is suitable for magnesium was made, and the manufacturing of magnesium strip was conducted in present study. For the experiments we used pure magnesium and magnesium alloy AZ31. This study aims at showing the possibility of this process as a new magnesium processing technology. From experiments, it was possible that magnesium strip was produced in Melt Drag process. And the temperature of molten magnesium decreased suddenly in the gutter and the tundish. When it exceeded 750℃, the viscosity increased due to the oxidization and the molten metal temperature decreased drastically. When roll speed increased, the cooling time on the roll became short. But, the amount of dragging solidified phase decreased and a cooling effect by decreasing strip thickness was dominative.
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