Die steel is used to make cold stamping die, hot forging die, die casting die and so on. Mold is the main processing tool for manufacturing parts in mechanical manufacturing, radio instruments, electrical machinery and other industrial sectors.

模具的质量直接影响着压力加工工艺的质量、产品的精度产量和生产成本、而模具的质量与使用寿命除了靠合理的结构设计和加工精度外，主要受模具材料和热处理的影响。

The quality of the mold directly affects the quality of the pressure processing technology, the precision of the product, the output and the production cost. The quality and service life of the mold are mainly affected by the mold material and heat treatment besides the reasonable structure design and processing precision.

当今高强钢、强钢很好的实现了车辆的轻量化，提高了车辆的碰撞强度和性能 ***模具钢h13，因此成为车用钢材的重要发展方向。

Nowadays, high strength steel and high strength steel realize the lightweight of vehicle and improve the impact strength and safety performance of vehicle. Die steel H13 has become an important development direction of vehicle steel.

但随着板料强度的提高，传统的冷冲压工艺在成型过程中容易产生破裂现象，无法满足高强度钢板的加工工艺要求。在无法满足成型条件的情况下，国际上逐渐研究强度钢板的热冲压成形技术。

However, with the improvement of sheet metal strength, the traditional cold stamping process is prone to fracture in the forming process, which can not meet the processing requirements of high strength steel plate. In the case of unable to meet the forming conditions, the hot stamping technology of high strength steel plate is gradually studied in the world.

该技术是综合了成形、传热以及组织相变的一种新工艺，主要是利用高温奥氏体状态下 热作模具钢，板料的塑性增加，屈服强度降低的特点 加工模具钢产品，通过模具进行成形的工艺。但是热成型需要对工艺条件、金属相变、cae分析技术进行深入研究，该技术被国外厂商垄断，--发展缓慢。

This technology is a new process which integrates forming, heat transfer and microstructure transformation. It is mainly a process which makes use of the characteristics of hot working die steel in high temperature austenite state, that is, the plasticity of sheet increases and the yield strength decreases, to process die steel products, and to form through the die. However, hot forming needs to study the process conditions, metal phase transformation and CAE analysis technology, which is monopolized by foreign manufacturers and develops slowly.