15 August 2014 y.
Recertification of Side Frames and Bolsters for Freight Cars Bogies Successfully Completed at BSZ
Bezhitsa Steel Foundry (BSZ, part of JSC Transmashholding) obtained conformity certificates for side frames and bolsters for freight-car bogies from Federal Railway Transport Certification Register.
Certification tests were performed in dedicated authorized test center - Tver Institute of Rail Car building. New certificates are valid till August, 2016.
Considering that side frames and bolsters are the most critical assemblies in the bogie, recertifi-cation procedure provides for an implicit check for compliance with enforceable safety standards ( NB ZhT TM 02-98, par. 5.1-5.6, 5.8, 5.9 and par. 4.1-4.6, 4.8, 4.9) in terms of chemical com-position, macro- and microstructure of steel, durability, and mechanical properties. Tests including those performed in cryogenic chamber at temperature of -60°C demonstrated that mass-produced bolsters and frames supporting the major load of freight cars are distinguished by reliability, high quality, precise geometry, capability of being operated at low temperatures.