Wear Analysis of Railway Wagon Wheel Treads

Analysis of the reasons for exceeding the limit of circumferential wear of wheel treads

Railway wagons in heavy load conditions, braking distance is extended accordingly. When braking, the brake tile and tread friction time is longer, friction increases. In the braking process, the brake tile and wheel tread contact parts to form a grinding movement, is bound to increase the wheel tread circumferential wear.

At the same time, the brake tile material is too hard, brake tile pressure is too large, air braking frequently and other factors are also likely to lead to wheel tread wear. The brake tiles can be replaced at any time during the inspection operation, but for the wheelset size exceeding the limit can only enter the section overhaul. If the overhaul is not timely, it will cause the tread circumferential abrasion to exceed the limit, and when the abrasion is serious, it will cause concave abrasion of the tread.

Wheel rim thickness over limit reason analysis

Railway wagon vehicle in actual operation, due to the wheel and track distance and inner distance with clearance, tread taper, track is not smooth, etc., the vehicle in operation, the serpentine movement, the wheel rim and the rail affixed to the increase in the wheel rim and the interaction between the rail increased, wear and tear is bound to increase. Especially through the turnouts, curves, rim wear is more intense!

Wheel diameter difference over the limit reason analysis

When the railway wagon vehicle running in a straight line, the left and right wheels rolling circle diameter is the same, can ensure that the vehicle along the straight line smooth operation. However, the mechanical error in the actual processing of the wheel, the production process or the operation process of the wheel track wear leads to the coaxial left and right two wheel diameter difference, the vehicle in the operation process occurs in the whole vehicle bias wear.

At the same time, after the asymmetric wear of the tread surface of the wheel pair, the wear of the tread surface will also lead to transverse movement of the wheel pair, exacerbating the wear of the tread surface on one side, thus generating a larger wheel diameter difference, resulting in the wheel diameter difference exceeds the limit.