Repair is an important part of the aluminum alloy die forging process. Because aluminum alloy is soft at high temperature, it has high viscosity and poor fluidity, it is easy to stick mold and produce various surface defects (folding, burrs, cracks, etc.). Before proceeding to the next process, it must be polished and repaired to remove surface defects. Clean, otherwise the defects will be further expanded in the subsequent process, and even cause the forgings to be scrapped.
Tools for repairing include pneumatic grinders, pneumatic mills, electric milling cutters and flat shovel. Before the repair, the defect is firstly found through corrosion. The repaired part should be smoothly transitioned, and the width should be 5 to 10 times of the depth.