The results indicated that low graphite spheroidization rate and free cementite were the main causes of poor mechanical property.
The results indicated that low graphite spheroidization rate and free cementite were the main causes of poor mechanical property.
试验结果表明，控制碳当量和球化剂加入量，采用瞬时孕育等可提高球化率；采用预热砂型等可减少渗碳体。