Cold stamping die convex, concave mold in the course of use, sudden appearance of breakage, breakage and cracks. Since the convex and concave molds of the mold are the parts that the mold is subjected to the maximum punching force during the stamping work, the convex and concave molds of the mold may be broken during the stamping process, and the main reason is that the heat treatment processing is improperly handled (hardened hard or If the hardness layer is too deep, the design gap is too small, etc., which will cause the convex and concave molds to be damaged, broken and broken. The rupture of the convex and concave molds of the mold, some local damage, we can continue to use after repair, and some of the damage is relatively large or completely damaged. It can only be repaired according to the design of the drawings. Use after the die.
Cold stamping die convex and concave molds have undergone shape deformation during use, which changes the geometrical shape of the processed product parts, which affects the dimensional accuracy and shape requirements of the machined parts. This is exactly the opposite of the case of fracture, mainly due to the insufficient quenching hardness of the convex and concave molds during the heat treatment or the shallowness of the quenching hardness layer, so that the convex and concave molds are geometrically deformed during the stress process.