The regularity of the change in the coefficient of friction of the coupling of "shaft-sleeve" parts using polymeric materials

Problemi tribologii Pub Date : 2023-03-17 DOI:10.31891/2079-1372-2023-107-1-81-91

V. Aulin, S. Lysenko, A. Hrynkiv, A. Tykhyi, O. Kuzyk, O. Livitskyi

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Abstract

For the conjugation of samples and parts of the "shaft-sleeve" type, from the theoretical and experimental points of view, the laws of the change of the coefficient of friction for the combined polymer-metal material and coating were considered. Based on the law of energy conservation and transformation in the friction zone, expressions for estimating friction coefficients for polymer coatings and combined polymer-metal materials were obtained, taking into account the properties of thermal conductivity and elasticity and the geometric dimensions of the polymer and metal components. The consistency of the patterns of change in the friction coefficient has been clarified in tribocouplings of samples and parts from load and sliding speed in modes without lubrication and at extreme friction. To substantiate the effective operation of tribocoupling of parts made of combined polymer-metal materials, a criterion was introduced - the coefficient of wear, which is used to evaluate the tribological efficiency. It is shown that the obtained experimental results do not contradict the theoretical justification

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聚合物材料“轴套”零件联轴器摩擦系数变化规律

对于“轴套”类型的样品和零件的共轭，从理论和实验的角度考虑了聚合物-金属材料和涂层组合摩擦系数的变化规律。基于摩擦区的能量守恒和转换定律，考虑到聚合物和金属部件的导热性和弹性特性以及几何尺寸，得到了聚合物涂层和聚合物-金属复合材料摩擦系数的估算表达式。在没有润滑和极端摩擦的模式下，样品和零件在载荷和滑动速度下的摩擦耦合中，已经阐明了摩擦系数变化模式的一致性。为了证实由聚合物-金属复合材料制成的零件的摩擦耦合的有效操作，引入了一个用于评估摩擦学效率的标准——磨损系数。结果表明，所获得的实验结果与理论论证并不矛盾

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Problemi tribologii

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10 weeks