等离子束淬火时,淬硬层与基体之间基本没有过渡区,整个淬硬层的组织近乎全部为隐针马氏体,故硬度高,且硬度在整个硬化层没有明显的变化;淬硬层略有浮凸,并受到来自未淬火的基体的挤压力,这对于提高硬化带的接触疲劳强度是有利的. When the plasma beam quenching, the transition zone between the hardened layer and the substrate basically no transition zone, the entire hardened layer almost all hidden needle martensite, so the hardness is high, and the hardness of the entire hardened layer no significant change; hardened layer Slightly embossed and subject to squeezing forces from the unhardened substrate, which is advantageous for increasing the contact fatigue strength of the hardened tape.