The 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

Complex use of CAD and CAE-technologies for enhancement of a podklinovy outer spring of spring suspension of the three-element cart of the freight car of model 18-100 is offered. As the initial prototype the outer spring, development of JSC NPK Uralvagonzavod was selected. Solid modeling and an assessment of the intense deformed status was executed in the instrumental environment Autodesk Inventor Professional 2015. It allowed to receive more rugged construction of a spring in comparison with a basic spring on condition of saving overall dimensions.

Keywords: the cart of the freight car, podklinovy spring, knot of blanking out of fluctuations, 3d – modeling, strength, durability, working capacity, a frictional chock