Dusting method: When working, the spray gun part of the electrostatic spraying is connected with the negative pole, the workpiece is connected with the positive
Crimping is the process of the edge of the roll into a nearly closed round of a stamping process. The axis of the curl circle is linear.Roll edge is the upper edge of the hollow part rolled into a nearly closed circle of a stamping process.
Stamping die, is a special process equipment in the cold stamping process, the material (metal or non-metallic) into parts (or semi-finished products), known as cold stamping die