Hot stamping is often referred to as stamping hardening technology. First, the initial strength of the 500~600mpa high-strength plate heating to 880~950℃, and then into the internal with cooling system in the mold stamping forming, and in a state of pressure, to 20~300℃/s cooling speed of rapid quenching cooling, due to the transformation of austenite into martensite, the strength of the parts greatly improved, The strength of up to 1500MPa stamping parts can be produced.

Thermal stamping technology According to the process is divided into direct hot stamping process and indirect hot stamping process two categories. In the direct hot stamping process, the billet is heated and sent directly to the closed mold for stamping forming and quenching, followed by cooling, cutting Chongcon (or laser cutting), surface cleaning and other subsequent processes. In the indirect hot stamping process, the cold punching pre-forming, and then into the heating, hot stamping, cutting edge punching, surface cleaning and other processes.

The difference between the two is that the indirect hot stamping process before heating than the direct hot stamping process more cold punching pre-forming process, hot stamping process into the heating furnace is the sheet, indirect hot stamping process sent into the heating furnace cold punching pre-forming parts. In general, direct hot stamping process method is suitable for simple parts, indirect hot stamping process method is suitable for complex shape parts or deep drawing parts.

热冲压成形一般工艺流程如下图。热冲压的关键工艺过程是加热、冲压、保压和冷却。加热过程直接影响到高强度钢板的冲压性能，冲压过程中伴随的淬火则对零件强度的硬化起到决定性的作用。