Technological study of liquid die forging for the aluminum alloy connecting rod of an air compressor

The aluminum alloy connecting rod of an air compressor was manufactured with liquid die forging replacing die casting and hot die forging. Not only were the defects of gas holes, porosity and non-metal inclusions in the die casting eliminated, but also the investment of the forging equipment and the performing process were decreased, and the coefficient of material utilization and the rate of production were increased. In this paper, the forging design, the die structure, the design parameters, and the technological advantages of liquid die forging for the aluminum alloy connecting rod are introduced.