Hot stamping processing experiments of quenchable boron steel

The influence of the hot stamping processing parameters, such as the heating temperature, the heat holding time and the cooling water flow velocity, on the mechanics properties and microstructure of the hot stamping parts was analyzed by tension tests and the metallographic observation on the parts with various processing parameters. Results indicate that the hot stamping part with high strength boron steel can be effectively quenched in the designed dies. And it mainly forms homogeneous and close Martensitic structure. The tensile strength can reach 1500 MPa or even higher. And then the optimal ranges of the hot stamping processing parameters are determined, which provides a basis for the control of the hot stamping process applied in complicated shape parts' production.