论文部分内容阅读
在运用中车轮上出现踏面极限磨损或车轮内出现各种缺陷(擦伤、焊瘤等),就必需在车轮车床上旋削以修复车轮踏面型面。同时,多年来铁路运输部门就出现了轮对旋削数急剧增加的趋势。例如,1973年车辆修理工厂和车辆段旋削了约200万对轮对,1979年则超过300万对轮对。对轮对修理的预测表明,今后轮对的年旋削量将增加到500万对。轮对旋削数量的增加,不仅与机车车辆的运转强度和机车车辆拥有量的增加有关,而且也与一系列其它原因有关。其中一个原因是车轮踏面上热态机械摩擦引起的缺陷(焊瘤和擦伤)数量的增加。全苏铁路运输科
In the use of the wheels appear on the tread limit wear or wheel within the various defects (scratches, welding tumor, etc.), it is necessary to turn on the wheel lathe to repair the wheel tread profile. At the same time, the railway transport sector has witnessed a sharp increase in the number of rounds of rotation over the years. For example, about 2 million pairs of wheelsets were channeled at the vehicle repair shop and depot in 1973 and more than 3 million pairs in 1979. The forecast for wheelset repair shows that the annual turning amount for the wheelset will increase to 5 million pairs. The increase in the number of wheelset rotations is not only related to the operating strength of locomotives and the increase in the number of rolling stock, but also to a number of other reasons. One of the reasons is the increase in the number of defects (weld and abrasion) caused by the thermal mechanical friction on the tread of the wheel. All Su Rail Transport Branch