With the continuous development of railway transportation in China, the main trunk lines of train weight and driving density, the construction of large-scale passenger dedicated line and high-speed railway, the requirements of the standard high, in order to improve the quality of the line, to ensure the safe operation of trains, the application of rail grinding train on-line rail grinding maintenance and maintenance is necessary.
1. Rail grinding can eliminate rail disease. such as wave grinding, flying edge, joint irregularity, etc., thus reducing the noise of the train operation.
2. Rail grinding can modify the rail profile. In order to improve the wheel-rail contact relationship, reduce the wheel-rail contact stress and wear, improve the comfort of the train operation.
3. Reasonable and effective rail grinding can prolong the service life of rail 50%~300%.