Flow guide and pressure guide type press pipe forming punch

The utility model relates to a flow guide and pressure guide type press pipe forming punch which comprises a flaring section, a low-pressure sealing section and a high-pressure sealing section. The diameter of the low-pressure sealing section is smaller than the maximum diameter of the flaring section; a pressure guiding and flow guiding hole is formed in the low-pressure sealing section and communicated with a liquid channel in the punch. According to the flow guide and pressure guide type press-fitting pipe forming punch, the shearing force difference between the injection pressure and the overflow pressure in a pipe blank can be reduced, so that the internal liquid pressure and the external liquid pressure of the pipe blank are equal, the pipe blank can freely move in the axial direction under the thrust of the punch, automatic centering of the pipe blank is achieved, and the production efficiency is improved. Therefore, the depths of the punches on the two sides of the pipe blank entering the pipe blank a