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应用UMT-3型多功能摩擦磨损试验机和自制的磨损测试试验台,考察供液充分条件下菱形孔的尺寸、形状、排布方式及深度对摩擦系数的影响和机理分析.结果表明:具有合适孔型和孔深的菱形孔织构端面,可极大地改善摩擦副的润滑性能,能够有效地降低摩擦系数.在研究的工况条件下,双向双列倾斜菱形孔和孔深为10μm的菱形孔,具有较好的摩擦学特性;某些类型的织构端面在进入流体动力润滑阶段后,摩擦系数随Herscy数的增大产生波动,而非增大的趋势,这是因为在滑动面间能够产生空化,而空化区的气液边界处将产生界面滑移,空化区越大,滑移长度越长,滑移效应增强,则减摩性越好,从而导致摩擦系数减小.
The effect and mechanism analysis of the size, shape, arrangement and depth of rhombic holes on the friction coefficient were investigated by UMT-3 multi-purpose friction and wear testing machine and self-made wear test bench.The results showed that: Suitable hole type and hole depth diamond hole texture end face, can greatly improve the friction performance of the friction pair, can effectively reduce the friction coefficient under the conditions of the study conditions, the two-way double-row inclined rhombic hole and the hole depth of 10μm Diamond-shaped hole, has good tribological properties; some types of textured end surface into the hydrodynamic lubrication stage, the coefficient of friction with the Hersd number increased fluctuations, rather than increasing the trend, this is because the sliding surface Between the gas-liquid boundary of the cavitation zone will produce interfacial slippage. The larger the cavitation zone, the longer the slippage length, the greater the slippage effect, the better the anti-friction performance, resulting in a decrease of the friction coefficient small.