Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 01, 2021 - December 03, 2021
Flange wear tends to occur frequently in urban subways where there are relatively many sharp curved sections. This flange wear is the main factor that determines the cycle of wheel turning in the Tokyo Metro. After turning the wheels, the flanges are severely worn in the first few months, and when the flange wear progresses to some extent, the wear rate decelerates rapidly and the occurrence of wear is suppressed. In this study, the contact between the wheel and the rail was investigated with a new wheel and a worn wheel, especially on rails with severe wear. Based on the results of this research, we have developed a new wheel tread that can prevent flange wear. In addition, the developed wheel was put into service on a commercial line and the flange wear was investigated.
