高碳当量灰铸铁孕育剂的试验与应用

Research and Application of RE-Si-Ba Inoculant to Grey Cast Iron of High Carhon Equivalent

提出了生产电机端盖薄壁灰铁件对孕育剂的要求。在生产条件下进行试验，确定硅钡稀土合金是生产此类铸件效果较好的孕育剂，该孕育剂在高砂型硬度、垂直分型、高碳当量及铸件壁薄等条件下，具有减少白口倾向、降低铸件硬度、加入量少、抗孕育衰退能力强等特点，是高碳当量灰铸铁孕育效果良好的孕育剂。

According to the characteristic of thin-section castings of high carbon equivalent grey cast ironproduced on high pressure vertical parting moulding line,it demands that a kind of inoculent must be added tothe molten cast iron,which possess good ability to eliminate chill and reduce hardness on machining surface ofcasting. By means of experiments of different inoculant in practical production,it has been indicated that RE-Si.Ba is the best inoculant available for thin-section castings of high carbon equivalent.