马氏体不锈钢不同剩余磁场条件下短时干摩擦的摩擦损伤行为研究

Short-time Dry Friction Damage Behavior of Martensite Stainless Steel in Different Remnant Magnetic Field

本文研究了马氏体不锈钢磨削加工产生的剩余磁场对其短时干摩擦过程中摩擦系数的影响。结果表明:剩余磁场对摩擦行为的影响与外加载荷有关,当外加载荷较低时,摩擦系数随剩余磁场强度的升高无明显变化;随外加载荷的升高,剩余磁场强度对摩擦系数的影响作用增大;当外加载荷较高时,摩擦系数随剩余磁场强度的升高而增大;在短时摩擦过程中,随着剩余磁场强度的升高,摩擦界面吸附磨损颗粒的能力增强,加速了摩擦界面的磨粒磨损,使摩擦系数升高。

In this paper, influence of remnant field intensity resulted from grinding process on friction coefficient of martensite stainless steel in the condition of short - time dry friction was investigated. The results show that the effect of remnant magnetic field intensity on the friction was correlated with the load. When the load was lower, there was no evident change on the friction coefficient. However when the load was higher, the effect of remnant magnetic field intensity became evident with the increasing load. The cause for such an effect was that wear particles were easily absorbed in the friction interface with the increasing magnetic field intensity, which accelerated the process of abrasive wear, and induced the friction coefficient increased.