研究了用喷雾沉积工艺制造触变性半固态A356铝合金坯料 ,然后在自行研制的中频感应穿透加热装置中进行二次加热 ,再将处于半固态的合金锭料压铸成形的工艺方法。用该合金试制了上海通用汽车公司Buick车从动链轮支架压铸件 ,经X射线探伤和金相组织观察表明 ,压铸件内部显微组织均匀致密 ,无气孔、偏析等缺陷 ,力学性能优于普通压铸件。 The manufacturing method of thixotropic semisolid A356 aluminum alloy billet by spray deposition was studied. The secondary heating was conducted in the self-developed medium frequency induction penetrating heating device, and then the alloy ingot in the semi-solid state was die-formed. This alloy was used to manufacture Buick car driven sprocket die castings of Shanghai GM. The X-ray flaw detection and metallographic observation showed that the internal microstructures of the die-castings were uniform and compact with no porosity and segregation defects. The mechanical properties were better than Ordinary die-casting.