Abstract
Aluminum alloy is different from high strength steel, which is a hard material. Cracks owing to insufficient elongation in the press forming process and shear stress repeatedly applied in the shear process cause aluminum particles fused to the material surface to fall. To eliminate these, a large waste of manufacturing time occurs due to additional processing operations. We developed a rapid air cooling shear mold with a vortex tube that can prevent fusing of aluminum material at the punch and die edges of the upper and lower molds. The goal was to solve the chronic burr problem by minimizing the thermal occurrence generated during shearing. In the blanking mold of Tail Gate Hinge parts, the temperature inside the mold increases owing to the heat generated during continuous press production. Cooling is possible in an actual mold experiment by applying a rapid air cooling system using a vortex tube.
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