一、问题的提出 近年来,随着我国牵引动力的内、电化和列车重量、速度、密度的增加,轮轨磨耗日益加剧,已成为目前全路各局积极研究和探讨的重要课题之一。 我段担当的牡丹江至一面坡区段,全长192公里。地处山区,线路坡道大,小半经曲线多。最大坡度14.6‰,500米以下半径的曲线就有300多处。每年从春季开始,机车轮缘的非正常磨耗开始加重。有的机车仅(?) First, the issue raised In recent years, with the traction power of China, the electrification and the train weight, speed, density increase, wheel and rail wear increased day by day, has become an active research and discussion of all the major issues. I play Mudanjiang to a slope section, a total length of 192 km. Is located in the mountains, the line ramp, a small semi-curve more. The maximum gradient of 14.6 ‰, 500 meters below the radius of the curve there are more than 300. Starting from the spring every year, the abnormal abrasion of locomotive rim begins to aggravate. Some locomotive only (?)