Study on Wheel Wear of Metro Cars Considering the Role of Abrasive Block
To study the impact of abrasive block on the wheel wear,the follow-up tests of wheel wear have been performed on the trains with and without abrasive blocks for some metro lines in China.The test results show that whether or not using the abrasive block,along with the increase of distance travelled of the car,the tread wear presents a linear increase,so the abrasive block won't change the law of linear increase of the tread wear.Without abrasive block,the lateral wear of wheel tread presents a non-uniform wear state with presence of pit wear and the equivalent taper of wheel increases with the increase of the distance travelled;with abrasive block,the lateral wear of wheel is uniform without pit wear and the equivalent taper basically keeps unchanged with the increase of the distance travelled.The wear of the flange with abrasive block is lower than that without abrasive block,with a reduction of about 16.4%.
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