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An Investigation of the Influence of Initial Roughness on the Friction and Wear Behavior of Ground Surfaces

机译:初始粗糙度对地面摩擦磨损性能影响的研究

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摘要

Friction and wear tests were performed on AISI 1045 steel specimens with different initial roughness parameters, machined by a creep-feed dry grinding process, to study the friction and wear behavior on a pin-on-disc tester in dry sliding conditions. Average surface roughness (Ra), root mean square (Rq), skewness (Rsk) and kurtosis (Rku) were involved in order to analyse the influence of the friction and wear behavior. The observations reveal that a surface with initial roughness parameters of higher Ra, Rq and Rku will lead to a longer initial-steady transition period in the sliding tests. The plastic deformation mainly concentrates in the depth of 20–50 μm under the worn surface and the critical plastic deformation is generated on the rough surface. For surfaces with large Ra, Rq, low Rsk and high Rku values, it is easy to lose the C element in, the reciprocating extrusion.
机译:在具有不同初始粗糙度参数的AISI 1045钢试样上进行了摩擦和磨损测试,并通过蠕动进给干磨工艺进行了加工,以研究在针盘式测试仪上在干燥滑动条件下的摩擦和磨损行为。为了分析摩擦和磨损行为的影响,涉及平均表面粗糙度(Ra),均方根(Rq),偏度(R​​sk)和峰度(Rku)。观察结果表明,初始粗糙度参数较高的Ra,Rq和Rku的表面在滑动测试中会导致更长的初始稳态过渡期。塑性变形主要集中在磨损表面下20–50μm的深度,并且临界塑性变形在粗糙表面上产生。对于具有大Ra,Rq,低Rsk和高Rku值的表面,很容易在往复挤压过程中损失C元素。

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