차륜/레일 시험편을 이용한 레일의 마모특성 평가

Rolling contact fatigue and wear of rails are inevitable problems for railway system due to wheel and rail contact. On straight track, the wheel tread is in contact with the rail head. However, In curves, especially, large sliding on the contact patch occurs at the wheel tread and flange. Due to this sliding, wear increases in the wheel/rail contact under the dry condition. In order to develop new materials and predict wear. It is important to understand the wear mechanism in rail steels. In this study, we have investigated wear characteriscs of rail steel using twin disc testing.