In order to improve the properties of high silicon solid solution ductile iron QT600-10 castings,the effects of dif-ferent contents of Si,Mn and Cu on the microstructure and strength of the castings were analyzed.The results show that there is no significant correlation between the change of Si,Mn and Cu content and the change of pearlite content.Mn con-tent in 0.34%～0.40%,no significant effect on the strength of castings was found(the range may be too narrow).When Si content is in the range of 3.87%to 4.24%,the strength of castings increases with the increase of Si content.When Si content is lower than 3.95%,the strength of castings will be lower than 600 MPa;when Si content is 4.24%,the strength of castings will be 629 MPa,which is the highest strength in this test.The Cu content is 0.18%～0.44%,and the strength of the casting decreases with the increase of Cu content.
high silicon solutionductile ironQT600-10pearlitecast
维普
万方数据
