By analyzing the casting defects in aluminum alloy blade

it is pointed out that the casting defects are closely relative to pouring position

gating system design

exhaust of the mold house and the mold filling temperature. Based on the mentioned analysis

some improvment methods

including mold tilt

horizontal pouring and vertical cooling

design of exhaust gutter along the parting surface

changing in thickness of coating layer and adjustment of solidification sequence

are presented.