Research on Reasonable Selecting Rail in the Line with Notable Damage of Contact Fatigue
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摘要: 在客货混运主干线的接触疲劳伤损突出路段,进行了1 100 MPa级热处理钢轨和U75V、U71Mn热轧钢轨的铺路试验。结果表明1 100 MPa级热处理钢轨的抗接触疲劳伤损性能明显优于U75V和U71Mn热轧钢轨。在客货混运主干线钢轨接触疲劳伤损突出的大半径曲线和直线路段选用1 100 MPa级热处理钢轨,将有效减少钢轨的接触疲劳伤损,获得良好的综合试验效果。Abstract: In the main line transporting both passenger and freight with notable damage of contact fatigue,the paving trial of 1 100 MPa heat treated rail,U75V rail,and U71Mn rail have been carried out.The result indicates that the 1 100 MPa heat treated rail's contact fatigue resistance properties are better than the U75V and U71Mn rail's.Selecting 1 100 MPa heat treated rail in the sweeping curve or line of the main line transporting both passenger and freight with notable damage of contact fatigue,the rail's contact fatigue damage can decrease obviously,and the trail gains good integral effectiveness.
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Key words:
- steel rail /
- contact fatigue /
- damage
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