Heat treatment of punching parts blanking die requirements:
Processing requirements of blanking is one of the basic process of cold stamping. It is the use of blanking die in the press to a stamping process is drawing material separation. The blanking die is a kind of tool with a cutting edge. When cutting the cutting edge into washed material, and suffer intense friction strong impact and material, the cutting edge position after a period of use may cause serious wear, from the beginning of the sharp, to eventually become blunt, affects the quality of subsequent product. In order to ensure the quality of long-term stability of product parts, wear resistance which requires the punch die should be higher, but also have certain compressive strength, flexural strength and certain impact blade. And to die, except for flexural strength seems to demand is not high, its compressive strength, toughness requirements higher than the punch. The blanking die convex, concave die the above requirements, in addition to the correct choice of steel with convex, concave die, but also a reasonable heat treatment process to ensure that after heat treatment, hardness, toughness and other requirements, both of which are indispensable.
The blanking die forming parts heat treatment sequence
In the final heat treatment hardening, heat treatment procedure arrangement process sequence for EDM is:
Forging and heat treatment annealing → rough mechanical processing, heat treatment quenching and tempering, EDM (electrical discharge perforation or wire cutting processing, repair assembly pliers)..
Thus it can be seen, the heat treatment process in die manufacturing, processing technology is very important and indispensable. For Stamping Progressive Die, compound die, position tolerance and size tolerance requirements of precision, not only to comply with the above procedure, in order to reduce the heat treatment deformation, often in the process also interspersed removal tempering stress treatment, heat treatment process.