Bionic strips were designed and processed on the piston of BW-160 slime pump to improve its friction performance, decrease wear mass losses, and prolong service life. Nine stripped pistons were processed and manifested by different strip depths and included angles between stripes and piston surface. A workbench of slime pump piston was created to test the frictional force, oil film width, and wear mass losses. Test results demonstrated that the stripped structure can significantly decrease the frictional force on the piston. Optimal strip depth, included angle, and resistance reduction rates for stripped piston reached 2 mm, 90°, and 53.89%, respectively. The oil film on stripped piston was significantly wider compared with that of the standard piston, thus reducing frictional force between the piston and cylinder sleeve. The wear mass losses and the wear rate of the bionic piston are lower than that of the standard piston. Finally, the friction and stress of the piston are analyzed by finite element method, and the influencing mechanism on performance of pistons was discussed. The test results provide parameters for piston design of BW-160 slime pump for engineering.

中文翻译：

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BW-160煤泥泵仿生剥离活塞的摩擦磨损性能

BW-160泥浆泵的活塞上设计加工了仿生条，以提高其摩擦性能，减少磨损质量损失，延长使用寿命。对9个剥皮活塞进行了加工，表现出不同的剥皮深度和条纹与活塞表面之间的夹角。创建了一个煤泥泵活塞工作台来测试摩擦力、油膜宽度和磨损质量损失。测试结果表明，剥离结构可以显着降低活塞上的摩擦力。剥离活塞的最佳剥离深度、夹角和阻力减少率分别达到 2 mm、90°和 53.89%。与标准活塞相比，剥离活塞上的油膜明显更宽，从而减少了活塞与缸套之间的摩擦力。仿生活塞的磨损质量损失和磨损率低于标准活塞。最后，采用有限元方法对活塞的摩擦和应力进行了分析，探讨了对活塞性能的影响机理。试验结果为工程用BW-160煤泥泵的活塞设计提供了参数。