The Effects of Rare Earth La, Ce on Tin Brass’s Structure and Performance

The Effects of Rare Earth La, Ce on Tin Brass’s Structure and Performance
　　Because of cage shoe’s poor wear,and bad toughness,increases maintennance and overhaul for the cage, and cage shoe to be replaced frequently ,which raises security incipient fault ,resulting in increased costs of mining economy. The rare-earth elements are "the Vitamin" of metal materials; they have special functions in improving metal materials. In this paper,by strong magnets adding rare earth lanthanum, cerium to copper alloy,study http://www.chinamagnets.biz/  the mechanism of rare earth to cage shoe and the influence of rare earth on cast structure, mechanical properties and wear resistance.
　　The research showed that the addition of rare earth, the mechanical properties of the alloys have different effects. Lanthanum, cerium amount of 0.06% and strong magnets  0.04% respectively, showed excellent mechanical properties and wear resistance. Meanwhile, the casting process improvement, the segregation problem getting a better solution.