论文部分内容阅读
利用定速摩擦试验机,研究了外源铜粉对Q235钢材料摩擦性能的影响。结果表明:外源铜粉使摩擦系数增加;从低速到高速的摩擦系数低于从高速到低速的摩擦系数;外源铜粉本身作为第三体参与摩擦试验,增加了微凸体之间的机械啮合程度,提高了材料的摩擦系数。随摩擦速度的增加,表面温度升高而形成了具有一定硬度的复杂氧化膜,这层氧化膜在速度较低的摩擦过程中提高了表面第三体对材料的承载能力,起到了提高材料摩擦系数的作用。
The effect of exogenous copper powder on the friction properties of Q235 steel was studied by using a fixed-speed friction tester. The results show that the exogenous copper powder increases the friction coefficient, the friction coefficient from low speed to high speed is lower than the friction coefficient from high speed to low speed, and the exogenous copper powder itself participates in the friction test as a third body, The degree of mechanical engagement increases the coefficient of friction of the material. As the friction speed increases, the surface temperature increases to form a complex oxide film with a certain hardness. The oxide film improves the bearing capacity of the third body on the material during the lower friction speed and improves the friction of the material The role of the coefficient.