不同工况参数对酚醛树脂基无石棉闸瓦材料摩擦性能影响

针对WSM–3型酚醛树脂基无石棉摩阻材料,搭建实验装置研究WSM–3型闸瓦材料与16Mn钢摩擦副摩擦性能。根据实验数据,研究了瞬态/平均摩擦系数随不同接触压力、不同滑动速度及不同接触表面温度的变化规律,在考察多种曲线的基础上,分析瞬态/平均摩擦系数在不同工况参数下的变化特性,并探讨了闸瓦材料摩擦性能的变化机制。实验证实,闸瓦材料的摩擦性能不仅具有强烈的系统依赖性,而且与系统的工况因素具有强耦合性,在闸瓦材料摩擦学设计中将瞬态/平均摩擦系数视作变量是必要的。

Effect of Different Conditions Parameter on Tribological Properties of Non-Asbestos Brake Shoe Material

In allusion to WSM-3 non-asbestos phenolic resin-based friction material, the experiment devices were set up for studying tribological properties of the WSM-3 resin-based non-asbestos brake shoe braking on 16Mn steel. According to collected experiential data of physical test, the change rules of the transient/mean friction coefficient were studied with contact pressure, sliding velocity and contact surface temperature,on the base of drawing the curves, and the changing law of the friction coefficient were explored with the different condition parameters, and the variation mechanism of friction performance of WSM-3 brake shoe material were discussed. The experiment results show that the frictional properties of the materials not only have strong system dependency, but also have strong coupling with the working conditions of the system,it is needed for considering the transient friction coefficient or the average coefficient of friction as a variable in the material tribological design.