In order to select the stamping die material and heat treatment requirements, the batch stamping die data of the workpiece production should be considered. If the batch size is small, it is not necessary to select high life mold data. The raw materials of stamping parts should also be considered, as well as the die materials for different raw materials. They are different. For stamping dies, wear resistance is an important factor to determine the die life. The wear resistance of steel depends on the hardness of hard phases such as carbides and matrix.

The higher the hardness, the greater the amount of carbide, the better wear resistance. The wear resistance of common stamping die steel is inferior to that of carbon tool steel alloy tool steel base steel high carbon high chromium steel high speed steel steel steel steel cemented carbide cemented carbide. In addition, the influence of workpiece thickness, shape, size and accuracy requirements on the selection of die data must be considered.

For a long time, T10A, CrWMn, 9mn2v, Cr12 and Cr12MoV have been used as blanking die steels for domestic thin plates. Meanwhile, T10A is a kind of carbon tool steel with certain strength and durability. However, the wear resistance is not high, the quenching is simple deformation and fracture, and the hardenability is poor. Only suitable for simple shape, small scale, small number of stamping dies.

The heat treatment process of carbon tool steel is: 760? 810 ° C water or oil quenching, 160? 180 ° C tempering, hardness 59? 62 HRC.CrWMn 9mn2v is a high carbon low alloy steel. The quenching operation is simple, the hardenability is better than that of carbon tool steel, and the deformation is easy to handle. However, the wear resistance and wear resistance are still very low, and it is applied to die with medium batch size and disordered workpiece shape.