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本文概要介绍了影响灰口铸铁共晶团数的主要因素及共晶团数与强度关系。稀土硅铁合金孕育剂可使灰铸铁的共晶团数和强度指标显著增加。通过试验确定了在灰铸铁中添加稀土硅铁合金孕育剂的最佳量,在生产应用中具有实际的意义。
This article gives an overview of the main factors that affect the eutectic number of gray cast iron and the relationship between the number of eutectic and the strength. Rare earth ferrosilicon alloy inoculant can make gray cast iron eutectic lump number and intensity index increased significantly. The optimum amount of rare earth ferrosilicon alloy inoculant added to gray cast iron was determined through experiments, which has practical significance in the production and application.