During the production process of metal stamping and stretching parts, various product quality problems are inevitable, and burrs are one of them, which often occur in the cold stamping process of stamping parts processing. Due to the different causes of burrs, and the need for stamping manufacturers to solve the problem in a targeted manner, we can first understand the types of burrs on stamping parts in order to analyze and handle them within the allowable range. The shear section contains two layers of cracks and significant burrs. The reason is that the gap between the mold shell is lower than the effective gap, and the cracks at the convex and concave mold edges do not overlap. The gap between the convex and concave molds can be treated by grinding them. The cross-section of the punched part has a large inclination, resulting in burrs that break and enlarged corners at the arc. The reason is that the gap between the cold stamping die and the shell is too large, and the cracks do not overlap. Just replace the parts in the mold according to the replacement work.

The burrs on the punched parts are large, and the rounded corners of the dropped parts are enlarged.

. The reason is due to the bluntness of the concave die blade. According to the treatment of grinding the concave mold edge. Burrs caused by falling parts and large dents caused by punched parts. The reason is that the cutting edge of the mold seat is dull due to grinding, and according to the treatment of grinding the cutting edge of the mold seat.

Metal stamping and stretching parts have burrs and large corners caused by material dropping and punching on the parts.

. The reason is due to the blunt grinding of the convex and concave die edges during cold stamping. According to the grinding of the convex and concave die cutting edge, it can be processed.