一、前言硅钡合金作为一种高效长效孕育剂用于铸铁生产在国外已较为广泛。我国铸铁用孕育剂长期以来一直以75硅铁为主,仅有少数厂家使用硅钙,结晶硅。由于75硅铁的成分限制,用它作为生产薄壁高强度铸件的孕育剂时,其孕育效果不稳定,影响产品质量。近年来,一些科研单位与工厂进行了硅钡合 I. Introduction Silicon barium alloy as a long-acting inoculant for cast iron production in foreign countries has been more extensive. China has used cast iron inoculant has long been 75 ferrosilicon-based, only a small number of manufacturers using calcium silicate, crystalline silicon. Due to the limited composition of 75 ferrosilicon, when used as an inoculant for the production of thin-walled, high-strength castings, its inoculation effect is unstable and affects product quality. In recent years, a number of scientific research units and factories carried out silicon barium together