Development of metal-ceramic composite material for the friction unit of the absorbing apparatus of the railway car
Abstract
Development of metal-ceramic composite material for the friction unit of the absorbing apparatus of the railway car
Incoming article date: 26.02.2018The absorbing apparatus serves to extinguish the impact when the wagons cohere and move. Most of the energy, about 80%, in this system is absorbed by a friction unit consisting of a friction wedge and a fixed plate. Absorption of energy in this system occurs due to the work of frictional forces arising during longitudinal motion of the pressure wedge with respect to the friction plate. Due to the large shock-frictional loads, intensive wear and destruction of the cermet cake occurs, which adversely affects the energy capacity of the absorbing apparatus. To eliminate these shortcomings, studies were conducted to create a new material. After numerous experiments, a composition was obtained with the optimum content of components, which maximally satisfies the working conditions of the friction unit and the requirements imposed on these devices.
Keywords: absorbing apparatus, friction unit, cermet, wear resistance, friction plate, powder material, sintering technology