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Forging die features

Forging dies are an important part of the die forging process and a long history of the mold category. Due to the complexity of the forging process, the corresponding forging die has the following technical features:
(1) Multi-step forming, complex structure. The shape of the metal forging is volume forming, which is difficult to realize one-step forming, requires multiple deformations, and the forming steps of complex forgings can be as many as 12 steps. Therefore, a set of forging dies is often composed of 10 or more sub-dies.
(2) High temperature, heavy load, and poor working conditions. The metal forming temperature is 450 ° C (non-ferrous metal) ~ 1 300 ° C (steel material), the surface temperature of the mold cavity can reach 300 ° C ~ 750 ° C. At the same time, the external force required for metal deformation is also provided by the press through the mold, and the load applied to the forged steel material reaches 500 (hot forging) ~ 2 000 MPa (cold forging).
(3) Due to the flow of the metal blank when deformed under high temperature and high pressure, the forging model cavity needs to maintain the integrity of the working face of the cavity in addition to the normal parting surface, and the inlay structure cannot be adopted.
The technical characteristics of the forging die determine the design of the forging die, relying heavily on the design of the forming process. The mold material must be well selected and a reasonable heat treatment must be carried out. Advanced processing technology is adopted to ensure the precision and surface quality of the mold cavity.
2019/04/28 13:52:21 550 次

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