利用激光处理的强化磨耗板,表面硬度可达HRCB5以上,硬化探度为0～7 mm,耐磨性提高了三倍,成品率达100%.扫描电镜结果表明，硬化层为超细化马氏体,与基体之间有良好组织结构的过渡层,说明激光强化处理是提高车辆磨耗板使用寿命的有效途径。

As the development of railway technologies is oriented to high speed and heavy haul, it is required to upgrade the performance of car parts as well as their manufacturing process. This paper tries to explain through wear plate as an illustrative example that laser strengthening is among the essential substrtitutes for traditional production process.