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研究了5组滑动速度下钢-铜摩擦副在不同润滑介质作用下的摩擦学特性，发现摩擦副加有自补偿添加剂SW4和常规润滑剂具有不同的摩擦学特性：总的说，前者的钢、铜及副的磨损均比后者低得多；其相对耐磨性也随速度的增加而下降；而在某些速度下自补偿剂作用使钢出现负磨损；速度越低，磨损自补偿效应越显著。自补偿添加剂SW4能提高低速运行下钢-铜摩擦副（如丝杆螺母副、蜗轮蜗杆副）的磨损寿命。
The tribological properties of the steel-copper friction pair under different lubricating media were studied under five sliding speeds. It was found that the friction pair with the self-compensating additive SW4 has different tribological properties compared with the conventional lubricant: in general, the former steel , Copper and vice wear are much lower than the latter; its relative wear resistance also decreases with the increase of speed; at some speeds from the role of compensator negative wear and tear steel; lower speed, wear self-compensation The more obvious the effect. Self-compensating additive SW4 can improve wear life of steel-copper friction pair (such as screw nut, worm gear) under low speed operation.