UMT-2MT multi-functional friction-wear test rig and full-factorial design method were used to investigate the influence of load,reciprocal sliding frequency,and their interaction on the reciprocating wear of 35CrMo/GCr15 friction pair lubricated with lithium base grease as the lubricating agent.It was shown by square deviation analysis of wear volume that the priority of foregoing influence factors would be(1)load,(2)interaction,and(3)reciprocal sliding frequency according to their influencing rate.The micr...