通过改变冒口位置、冒口模数和冒口颈结构,进行了生产线上的铸铁小件补缩试验,结果表明:对铸铁件实现充分补缩的前提条件是:沿补缩通道各单元的当量模数与铸件凝固模数之比,不小于该铸件的补缩特性常数。 By changing the riser position, riser modulus and riser neck structure, a small piece of cast iron on the production line is compensated. The results show that the preconditions for fully compensating the cast iron are as follows: Equivalent modulus and cast solidification modulus ratio, not less than the casting properties of the constant modulus.