Development of the wear plate for the railway freight car

철도화차 대차용 마모판 개발

There are about 13,000 freight cars in Korea. The holding amount of the freight cars are many more than the other types of cars. But the bogie structure has many friction parts, so three are many hold-ups for the maintenance problem on the spot. As seen in Fig. 1 friction parts are organized of 30 parts in case of welding structure bogie. Especially left-right positions of the axle box have severe problems for the wear, they occurs the reduction of maintenance period, a lowering of the running safety. Generally the thickness of wear plate is 4.5mm and attached to bogie by way of welding method. At the running situation the friction occurs in wear plate each other. Namely the role of the wear plate reduce the load from the carbody. So we need the wear plate fur low-wearing, adequate friction power.