METHOD OF HARDENING FREIGHT CAR BOGIE SIDE FRAMES IN AXLE BOX OPENING INTERNAL ANGLES Russian patent published in 2013 - IPC B23P17/04 B61F5/52 C21D7/10 B23P9/02

Abstract RU 2476302 C1

FIELD: process engineering.

SUBSTANCE: invention relates to hardening of freight car bogie side frames. Side frame is subjected to flexure stress to create flexure moment in frame axle opening internal angles to cause plastic strain thereat. Note here that said flexure stress is brought about at distance between side frame sides of axle openings increased by 0.36-0.8 mm.

EFFECT: higher fatigue resistance and longer life.

1 dwg

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RU 2 476 302 C1

Authors

Dates

2013-02-27—Published

2011-08-04—Filed