Stamping is divided into cold stamping and hot stamping. Compared with cold stamping, the hot stamping process can effectively pay attention to the problems of lightweight and collision safety and high-strength stamping parts rebound and mold wear. Hot stamping processing is realized by its forming mold. Whether the design of the mold is reasonable will directly affect the efficiency of hot stamping forming. The design and manufacturing methods of hot stamping dies are mainly divided into four types: drilled, layered, shower, and cast. 1, drilling type The drilling type is to arrange the cooling system of the insert by arranging the pipe to the maximum extent under the convex and concave model surface. The advantage is that it is easy to process, easy to change the mold, and has good versatility; The disadvantage is that it can't be processed with the mold, and the mold cooling uniformity is poor. 2, layered The layered design is designed by layering the interface between the mold profile and other parts of the mold with a cooling pipe. The utility model has the advantages of good shape, large heat exchange area and simple sealing; The disadvantage is that high-precision processing equipment is required, the cooling pipeline is complicated, and the heat transfer performance is poor. 3, shower type The shower type has a series of small holes in the mold surface, and the nozzle is arranged in the hole. After the mold is closed, the high-pressure coolant is sprayed on the hot steel plate by the nozzle to achieve quenching and cooling. The advantage is that the cooling effect is good, the material phase changes sufficiently, and the mechanical properties of the parts are excellent; The disadvantage is that the processing is difficult, and the residual water droplets on the mold are seriously damaged to the mold surface, and the life of the mold is lowered. 4, cast-cast The molten casting type is pre-buried into the sand type through a fixed cooling pipe, and the mold blank is obtained by casting, and the integrated mold is obtained after machining. The utility model has the advantages that the cooling pipeline is arranged flexibly, the shape is good, the pipeline sealing is simple and reliable, and the processing is easy;