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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part J. Journal of engineering tribology >Effect of microgrooves generated by machining on tribological properties of 20CrNiMo/beryllium bronze tribopairs under low-speed and heavy-load conditions
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Effect of microgrooves generated by machining on tribological properties of 20CrNiMo/beryllium bronze tribopairs under low-speed and heavy-load conditions

机译：机械加工产生的微沟槽对低速和重载条件下20CrNiMo /铍青铜摩擦副的摩擦学性能的影响

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摘要

Mechanical engraving surface texturing methods are proposed, and pin-on-disc configuration tribological tests are carried out to investigate the effect of microgrooves, with different microgrooved direction and area ratio, on tribological performance of rock bit sliding bearing (RBSB). The RBSB, always working under low-speed and heavy-load conditions, is made of 20CrNiMo /beryllium bronze. Compared with untextured samples, wavy microgrooved tribopairs with area ratio of 5% and reference angle of 15 degrees exhibit lower friction coefficient and wear rate. Experimental results show a reduction of 54% in friction and 78.8% reduction for wear rate, revealing that microgrooves show great potential in improving the service life of RBSB.
机译：提出了机械雕刻表面纹理化方法，并进行了销盘式摩擦学试验，研究了不同沟槽方向和面积比的沟槽对岩石钻头滑动轴承（RBSB）摩擦性能的影响。 RBSB始终在低速和重载条件下工作，由20CrNiMo /铍青铜制成。与未织构的样品相比，波浪状微沟槽摩擦副的面积比为5％，参考角为15度，摩擦系数和磨损率更低。实验结果表明，摩擦降低了54％，磨损率降低了78.8％，这表明微槽在改善RBSB的使用寿命方面显示出巨大的潜力。

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