Booster vacuum casting is an advanced technique developed on the basis of traditional casting

its principles can be summed up as vacuum-pouring and solidification pressure

The paper is the use of vacuum booster technology

producing weight of about 60 kg

size of 1200×600mm and 2-20 mm wall thickness of the aluminum alloy large complex castings-electronic ark（ZL101）.By the casting analysis and production practice

designing reasonable technics parameter: Smelting between 720℃ and 730℃

the degree of vacuum-pouring is -0.0975MPa

and the solidification pressure of 0.4-0.7MP

There is no shrinkage

no pinholes on the large complex aluminum alloy casting surface

by using X-ray. Casting structure is thickening and the eutectic structure tiny

under the microscope. Its tensile strength would attain 245MP and elongation percentage 4.5%.