There were different degree scale shelling defects on running surface of 60kg/m U71Mn rail after used on the curve for a period of time, the characteristics and the generating reasons of the defects were analyzed, and the improvement measures were presented. There test results indicated that the scale shelling defects found on rail running surface were a sort of typical rolling contact fatigue damage, which caused mainly by the excessive contact stress, as a result of the wheel long-term contact with rail on the gauge corner of the rail on curve. It is effective to prevent and reduce rolling contact fatigue damage by following measures, such as improving the wheel/rail shape matching, and guaranteeing the wheel/rail interface locating on the rail tread center position, and strengthening the railway maintenance, and reasonable preventive grinding and corrective grinding for rails, and strict executing the system that rail grading use, the heat-treated rails should be used on small curve radius and heavy-load railway.
Analysis of the Generation Cause of Scale Shelling Defects on Running Surface of 60kg/m U71Mn Rail
Advanced Materials Research ; 291-294 ; 1062-1068
2011-07-04
7 pages
Article (Journal)
Electronic Resource
English
Rail , Scale Damage , Shelling Defects , RFC
Decarburization Depth Control Technology Research and Application for U71Mn Rail
Trans Tech Publications | 2013
|JRC2009-63014 Ultrasonic Guided Wave Inspection of Rail Defects Under Shelling
British Library Conference Proceedings | 2009
|The Effect of Preventive Grinding on Rail Surface Shelling
IuD Bahn | 1998
|Simulation Study on High-Speed Milling Performance of Rail U71Mn Material
British Library Conference Proceedings | 2018
|