Electro-hydraulic impulse water-air mixing jet by which the quality of metal materials can be improved is described in this paper. The experimental results proved that the hardness and the micro-hardness of the surface layer of metal materials can be improved with this method, for example, the microhardness of CrWMn can be increased by 35.62 percent.
Zhenfang LIAO and Shijin ZHANGCollege of Mechanical Engineering, Chongqing University, Chongqing 400044, China
