磨粒磨损的模型化分析

发布时间：2018-07-10 19:59

本文选题：磨粒磨损 + 球形磨粒　；参考：《润滑与密封》2017年11期

【摘要】：磨粒磨损作为磨损的主要类型之一,影响机械使用寿命。针对犁沟磨损机制,用球形、圆锥形和圆台形磨粒模型分析其磨粒磨损的磨损率和摩擦因数,考虑磨粒数量与磨粒尺寸间的指数关系,分析磨损率随磨粒数量和磨粒尺寸的变化,计算平均摩擦因数随磨粒数量及其参数的变化。研究结果表明,球形磨粒模型的磨损率随着磨粒的减小和磨粒数量的增加而减小,其摩擦因数随着磨粒数量的增多而增大;圆锥形磨粒模型的磨损率随着磨粒的增大与数量的增多而增大,其摩擦因数随着倾斜角的增大而增大;圆台形磨粒模型的磨损率变化趋势与球形磨粒一致,但其摩擦因数变化的趋势与球形磨粒相反。
[Abstract]:As one of the main wear types, abrasive wear affects the service life of machinery. Aiming at the wear mechanism of ploughing, the wear rate and friction coefficient of the wear particles are analyzed by spherical, conical and tabular wear models, and the exponential relationship between the number of abrasive particles and the size of abrasive particles is considered. The change of wear rate with the number and size of abrasive particles was analyzed, and the average friction coefficient was calculated with the number and parameters of abrasive particles. The results show that the wear rate of the spherical abrasive model decreases with the decrease of the particle size and the increase of the number of abrasive particles, and the friction coefficient increases with the increase of the number of abrasive particles. The wear rate of conical abrasive model increases with the increase of grain size and quantity, and the friction coefficient increases with the increase of inclined angle, and the wear rate of the model is consistent with that of spherical abrasive particles. However, the change of friction coefficient is opposite to that of spherical abrasive particles.
【作者单位】：浙江大学机械工程学院;
【基金】：国家高技术研究发展计划(863计划)项目(2015AA043002) 国家自然科学基金项目(51375436) 浙江省重大科技专项(2016C01G5130970)
【分类号】：TH117.1

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