The effects of two patterns of squeeze casting on mechanical properties of ZA43 alloy were investigated through the analysis of alloy liquid flow and pressure loss.The results show:punch squeeze casting results in converse flow of alloy liquid

which improves solidification condition of ZA43 alloy and avails to eliminate porosity

and makes less pressure loss during the process

while plunger squeeze casting also enhances flow of alloy liquid

but there is no macro flow

and pressure loss is higher. To achieve ZA43 alloy castings with high plasticity

specific pressure of plunger squeeze casting is much higher than that of punch squeez casting