该试验机可用于评定各种材料轴承用球的滚动接触疲劳性能。
The tester may be used to evaluate contact fatigue performances of balls made of various materials.
结果表明，掉块缺陷的形成是由于钢轨滚动接触疲劳伤损所致。
The result shows that rolling contact fatigue failures caused swap block defects of rail.
陶瓷轴承球的表面缺陷会严重降低球的强度和滚动接触疲劳寿命。
Surface defects in ceramic bearing balls may significantly affect ball strength and reduce rolling contact fatigue lifetime.
但是目前对于超硬涂层材料滚动接触疲劳失效机理的研究还处于探索之中。
But the study on the rolling contact fatigue failure mechanism of super hard material coati-ngs is in grope.
在滚动接触疲劳试验时循环载荷的作用下，界面处的石墨相当于孔洞引起应力集中。
Graphite plays a role as pores in the interface and increases the stress concentration under cyclic loading.
结果表明，含氮量对滚动接触疲劳寿命及平面应变断裂韧性具有很显著的影响，而对耐磨性影响很小。
The results show that nitrogen has remarkable influences on rolling contact fatigue life and plain strain fracture toughness, and little influences on wear resistance.
细小致密的等轴状晶粒、玻璃相少的陶瓷球的滚动接触疲劳性能优于长针状晶粒、玻璃相多的陶瓷球。
The rolling contact fatigue performance of ceramic balls with fine compact equal-axis grain and fewer glass phase exceeds that of those with slightness-needle grain and more glass phase.
踏面斜裂纹及断口的宏观形貌和理化检验与分析表明，踏面斜裂纹伤损属于滚动接触疲劳裂纹伤损类型。
The macro profile and physicochemical examination of the tread oblique crack shows that the crack falls into the category of rolling contact fatigue type.
通过对钢轨的修磨可减少由于滚动接触疲劳引起的钢轨损伤，减少钢轨侧面磨损，可延长钢轨的使用寿命0.5 ~1倍。
It may decrease fatigue damage causing by rolling contact and side damage on track and prolong rail service life 0.5 ~ 1 time by means of grinding rail track.
通过对钢轨的修磨可减少由于滚动接触疲劳引起的钢轨损伤，减少钢轨侧面磨损，可延长钢轨的使用寿命0.5 ~1倍。
It may decrease fatigue damage causing by rolling contact and side damage on track and prolong rail service life 0.5 ~ 1 time by means of grinding rail track.
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