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一、前言近年来,在包括有小半径曲线和陡坡区间的山区线路上,运行列车的空转和滑行均有增加的倾向。其原因之一大概是因为机车的运用减少或根本没有和在钢轨上撒砂的机会减少。而在平坦的线路上也有油污严重、粘着条件恶劣的区段,在这些区段上也因滑行导致踏面经常出现擦伤等损伤现象而苦恼,因而确立其防止措施对将来提高运行速度也是迫切的重要问题之一。有关增加车轮和钢轨间粘着的方法和材料问题,以前就进行过了各种各样的尝试。其中一个观点是想通过滑动材料与车轮踏面摩擦来得到同机车撒砂相同或胜过撒砂的显
I. INTRODUCTION In recent years, there has been an increase in idling and coasting of trains running on mountainous routes that include small radii curves and steep slopes. One of the reasons for this is probably the reduced or no reduction in the use of locomotives and the chances of spreading sand on the rails. On the flat lines, there are also sections with severe oil stains and poor adhesion conditions, which are also annoyed by the frequent occurrence of scratches and other damages on the tread in these sections, so it is also urgent to establish a preventive measure to increase the running speed in the future One of the important issues. Various attempts have been made in the past regarding methods and materials to increase the adhesion between wheels and rails. One of the points of view is to get the same or better sand blast than the same locomotive by rubbing the sliding material with the wheel tread