Answer: (1) Ultra-high pressure forming, the maximum pressure of the supercharger currently used in industrial production is generally 400 MPa. In order to adapt to more complicated structural shapes and precision, larger wall thickness and high strength materials, the internal pressure needs to be further improved. . In this process, a series of problems need to be solved, such as moving the seal in the ultra-high pressure section, reducing the friction under the ultra-high pressure, the strength of the mold material, and the control precision of the ultra-high pressure liquid.

(2) New forming process. For example, high-pressure forming in the welded pipe, high-pressure forming in the double-layer pipe, preform forming, external pressure forming and internal-external pressure combined forming, internal high-pressure-connection composite process, and the like.

(3) Forming of ultra high strength materials. With the further increase in the demand for lightweight construction, the strength of the materials used is getting higher and higher, and the plasticity is lowered, which makes the forming difficulty more difficult and the cracking tendency is serious. Therefore, it is necessary to bend, pre-form, auto-pressure form, wall thickness distribution and Lubrication, etc. for more in-depth research.

(4) Hot internal pressure forming. In view of the low room temperature plasticity of high-performance aluminum alloys, magnesium alloys and other light alloy materials, and the difficulty in forming, it is an important development direction to form shaped interface parts by heating and pressing medium. The main problem it faces is long forming time and low efficiency, and for some metals, the current heat resistant oil does not reach the required temperature. (This content is extracted from Xingdiyuan Machinery's official website)