本文研究了利用、常压等离子束对气缸套内壁进行重熔淬火硬化处理的工艺及组织性能,并对处理过程中的电流与硬化层深度、硬度、组织之间的相互关系作了深入的研究分析。 In this paper, the process and microstructure and properties of re-quench hardened inner wall of cylinder liner were studied by atmospheric pressure plasma beam. The relationship between the current and hardened layer depth, hardness and microstructure was also studied in detail analysis.