本文着重介绍了双金属浇铸复合冲击板的无损探伤结果,机械性能试验结果和实际使用的效果,从中得出了几个重要结论。本文还对冲击板的磨损表面和斜切面通过扫描电镜和覆膜透射电镜进行了观察和分析,对其磨损失效机理提出了初步的看法,最后为提高冲击板的耐磨性提出了改进方向。 This article focuses on the non-destructive testing results of bimetal cast composite impact plate, the mechanical properties of the test results and the actual use of the results obtained from several important conclusions. In this paper, the wear surface and oblique surface of impact plate were observed and analyzed by scanning electron microscope and coated transmission electron microscope. The preliminary view of wear failure mechanism was put forward. Finally, the improvement direction was proposed to improve the wear resistance of impact plate.