METHOD OF CAR TRUCK BOLSTER SADDLE BUILD-UP ELECTRIC ARC WELDING Russian patent published in 2009 - IPC B23K31/02 B23K9/04 

FIELD: transport.

SUBSTANCE: proposed method comprises mounting and fixing the bolster on rotary mechanism followed by build-up welding in rotating the bolster. Aforesaid operations are performed at the angle of bolster rotation mechanism elevation angle varying from 8 to 12 degrees. Build-up is made by open arc with welding electrode inclined to generating line of bearing surface at 50° to 60°, while build-up interval makes 1/3 to 1/6 of saddle depth.

EFFECT: lower costs, higher quality.

1 dwg, 1 tbl