多向加载近净成形研究动态

题.

Research Status of Multi-way Loading Near-net Shape Forming

Under the suitable forming temperature and the geometry of die, the loading modes at different forming stages are controlled actively. The deformation in the process may be controlled effectively, the blank may obtain better formability and better filling, and the desirable deforming and microstructure maybe obtained. Then the net or near-net shape manufacture can be actualized. Thus, the multi-way loading process provides an efficient way for precision plastic forming of the key and large-scale components of material difficult to deform. The multi-way loading process has been used in stretch forming, bulge forming, radial-axial ring rolling and multi-way forging. However, the special machine and process is only available to shape metal into the special component. The deformation behaviors in different processes even in the same process for different components are different. The state-of-the-art of multi-way loading forming is summarized, and then some proposals for further study in bulk forming are put forward.