With the development of the machining industry, more an […]
With the development of the machining industry, more and more parts are produced by cold-moulding in production, and more and more types of cold-deformed moulds are used. Cold volume die forging (cold enthalpy, cold extrusion, embossing, etc.); sheet metal stamping (such as drawing, blanking, trimming, punching, etc.); material rolling (cold rolling, rolling forming, etc.). Although there are many types of cold-deformed moulds, different working conditions, and different performance requirements, the basic working conditions are similar: that is, the metal is deformed in a cold state, and it is subjected to large shearing force, pressure, bending force, and Impact and friction.
The processing characteristics of cold deformed die steel
1. High hardness and high strength to ensure that it does not easily cause slight plastic deformation or damage when subjected to high stress.
2. high wear resistance, can guarantee the dimensional accuracy of the mould under high wear conditions, which is more important for the tensile and cold stamping dies.
3. sufficient toughness, so that under impact load and dynamic load, it is not easy to occur work tough peeling or collapse.
4. heat treatment deformation is small, because most moulds have complex cavities and precision, heat treatment deformation is difficult to eliminate with the grinding process, in addition, some cold deformation moulds should also have sufficient heat resistance.