Two new freight (coal) cars (types 12-196 and 12-197) were lately developed, constructed and implemented into the Russian commercial practice. The coal cars have carrying capacity 73.5 t and 74.5 t, respectively, car body volume 96 m3 and 91.7 m3, respectively, axle load 245 kN, distance between axles 13920 mm and are supported on the usual wagon chassis (type 18-194). The cars were found more fatigue wear-resistant than the analog coal car type 12-132 especially in respect to crack formation in the bolt joints, side walls and centre pins (between the truck and the car body). A semi-rigid autocoupler SA-4 device was developed, tested and recommended for practical use in the freight cars. In the car construction, tough 12G2F and 12G2FD vanadium steels (390 class of strength) were used. They showed increased fatigue and impact strengths at low temperatures when compared with the usual 09925 steel. New improved versions of the 12-196 and 12-197 freight cars were designed to increase the carrying capacity to 75 t and to 76 t, respectively, at the same axle load.
Development of railway coal cars of new generation with improved technical and economical parameters
Titel russisch
Tjazeloe Masinostroenie ; 8 ; 14-18
2005
5 Seiten, 9 Bilder, 3 Tabellen
Article (Journal)
Russian
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