It may decrease fatigue damage causing by rollingcontact and side damage on track and prolong rail service life 0.5 ~ 1 time by means of grinding rail track.
But the study on the rollingcontact fatigue failure mechanism of super hard material coati-ngs is in grope.
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。
3
The macro profile and physicochemical examination of the tread oblique crack shows that the crack falls into the category of rollingcontact fatigue type.