一、前言随着球铁大量应用于汽车、拖拉机等动力机械方面,对其低温性能有一定的要求。国外生产铁素体球铁要求磷含量不大于0．08%或0．1%。国内生产中将磷含量控制在小于0．08%。关于铁素体球铁磷量小于0．08%的低温性能已有较全面的试验研究。但在实际生产中常遇到铁素体球铁的磷含量大于0．1%的情况。对于高磷铁素体球铁的低温性能资料较少。我省地处寒冷地带,汽车和拖拉 I. Introduction With the ductile iron widely used in automobiles, tractors and other power machinery, its low temperature performance have certain requirements. Ferrite ductile iron production requirements of not more than 0.08% or 0.1%. Domestic production will control the phosphorus content of less than 0.08%. There have been more comprehensive experimental studies on the low-temperature properties of ferrite dipped iron less than 0.08%. But in the actual production often encountered ferrite ductile iron content of more than 0.1% of the situation. For low-temperature performance of high-phosphorus ferrite ductile iron less information. My province is located in the cold zone, cars and hauling