Experimental Study on Friction Fatigue of Contact Surfaces for Slide Guide
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摘要: 利用往复式摩擦试验机对典型的滑动导轨副试样进行摩擦疲劳实验,定量地分析了接触表面的疲劳磨损性能并获得了相关的摩擦疲劳指数。实验结果表明对于灰铁200-45号钢导轨副试样,通过硬化处理,可以使其耐磨性提高3~4倍;对表面进行边界润滑,可以使其耐磨性提高5~6倍。实验获得的HT200和淬火HT200在干摩擦和边界润滑条件下的摩擦疲劳指数分别为1.12、1.33、1.43和1.41。该研究结果可以为导轨副表面疲劳磨损的理论计算提供关键参数,并为定量地进行导轨副的摩擦学分析提供参考依据。Abstract: Friction fatigue test of typical slide guide samples was conducted in a reciprocating friction tester to analyze the fatigue damage characteristic of contact surfaces and obtain the friction fatigue exponents. The experiment results indicate that for the samples of HT200 versus 1045 steel, the wear resistance can be increased by 3~4 times and 5~6 times through hardening treatment and boundary lubrication respectively. The calculation results of friction fatigue exponents of HT200 and quenched HT200 under dry friction and boundary lubrication were 1.12, 1.33, 1.43 and 1.41 respectively. The research results can provide the key parameter estimation for the theoretical calculation of fatigue wear of slide guide and it can also conduct the quantitatively analysis of tribology for slide guide.
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