本文研究了氮离子(N~+)注入高速钢(W18Cr4V,W6Mo5Cr4V2)对抗冲击磨损性能的影响,并探讨了高速钢离子(N~+)注入做为模具表面强化工艺的应用可能性。冲击磨损试验结果表明,大剂量N~+注入不仅可以改善高速钢的静态磨损特性,而且可以显著降低在较大冲击载荷下工作的高速钢零件的磨损率。试验还表明,N~+注入对高速钢冲击磨损性能的改善程度并不与注入剂量成正比,而是有一个最佳值,在本文给定的试验系统中,此值约为1～3×10~(17)N~+/cm~2。 In this paper, the impact of nitrogen ion (N ~ +) implanted high speed steel (W18Cr4V, W6Mo5Cr4V2) on the impact wear resistance was studied and the application possibility of high speed steel ion (N ~ +) implantation as the mold surface strengthening process was discussed. The results of impact wear test show that high dose N ~ + injection can not only improve the static wear characteristics of HSS, but also significantly reduce the wear rate of high speed steel components under high impact load. The experiment also showed that the improvement of the impact wear property of high speed steel with N ~ + injection is not proportional to the injected dose, but has an optimal value. In the test system given in this paper, this value is about 1 ~ 3 × 10 ~ (17) N ~ + / cm ~ 2.