Problem of prolongation of service term of the casting parts of bogie UHNN-X3(18-100) of cargo carriage and ways of its solution

摘要

Problem of rolongation of service term of the casting parts of bogies of cargo carriages is looking in paper. results of chemical analysis, mechanical and fatigue tests of their part's material are given. Comparison of properties of material from new parts and from parts worked 30 years is presented.