抄録
In the Yamanote Line, an examination of the running surface after rail grinding was performed, and the influence of the passing tonnage on some rail characteristics after grinding was investigated. Findings showed that grinding marks disappeared after about one month. Moreover, it turns out that the rail surface becomes hard immediately after grinding, and a gauge corner hardens remarkably. Lastly, it was found that a metal organization is reproduced with the increase in use of the passing tonnage after grinding.
