带浮动定子涡轮钻具涡轮摩擦副的试验研究

Experimental Investigation on the Turbine Coupled Pair in Floating Stator Turbodrills

试验表明,带浮动定子涡轮钻具涡轮摩擦副的摩擦系数与摩擦面间的相对运动速度、摩擦面间的接触比压、工作介质含砂量、摩擦面温度、摩擦副材料和结构有关。重点讨论和分析了摩擦副材料和结构的选择,指出由丁腈胶或聚四氟乙烯与经淬火处理的60Si2Mn弹簧钢组成的摩擦副具有较好的抗摩擦磨损性能。

Experiment shows that the friction coefficient of the turbine coupled pair in a turbodrill with floating stators is related to the relative velocity and specific contact pressure between the friction surfaces, the sand content of actuating medium,the temperature of the friction surfaces, and the material and configuration of the coupled pair. This article discusses the adoption of appropriate material and configuration for the coupled pair, points out that the coupled pair made of nitrile-butadiene rubber (or polytetrafluoroethylene) and quenched 60Si2 Mn spring steel provide adequate friction-wear property.