| 摘要 |
PURPOSE:To reinforce the wear resistance and the heat resistance of the obtained titled alloy and also to impact the fitness properties for an opposite member by making a structure wherein both a rigid Fe-based grain having Cr content more than a base material and Cu (alloy) grain are dispersed by the sintering in the Fe-based material incorporating Cr, Mn and Mo. CONSTITUTION:After mixing sufficiently (i) an alloy powder consisting of by weight 1.8-3.5% Cr, 0.1-1% Mn, 0.1-1% Mo and the balance Fe, (ii) 5-20% rigid alloy powder consisting of 4-10% Cr, 0.05-1% Mo, 0.2-0.7% P and the balance Fe, furthermore (iii) 1-10% Cu (alloy) powder, (iv) 0.5-5% Fe-(10-30)% P alloy powder and (v) 1.5-4% graphite powder as the raw material powder, the mixture is pressurized, molded and sintered at 980-1,130 deg.C temp. If necessary, machinability may be increased by incorporating 0.05-1% S in the composition (i).
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