1. Material selection: When making stamping part products, the selection of materials is very critical; item name, thickness, specification and dimension etc should be taken into account. 2. Accuracy: The accuracy of stamping parts is divided into precision level and economic level which is helpful to control cost. ?3……

1. Adhesion and scratch: defects on the surface of part or tooling due to the friction between material and punch or die. 2. Burr: it mainly occurs in the shear die and blanking die. Burr will occur when the gap between cutting edges is large or small. 3. Deflection: Due to uneven stress, poor matching of tensile rei……