| 摘要 |
FIELD: technological processes.SUBSTANCE: invention can be used for production of welding of steel workpiece, in particular bearing ring. When implementing butt welding is performed melting and settling to produce weld (24). Method involves stage of heat supply (22) to at least welded joint (24) of workpiece (14, 30, 32) after upsetting at welding to raise temperature of welded seam (24) or to maintain temperature of welded seam (24) at higher level. Method also includes cooling said part (14, 32, 32) to temperature exceeding temperature of martensite formation (Ms), before said stage heating (22) of workpiece (14, 30, 32) after upsetting at welding.EFFECT: method allows avoiding or reducing formation of defects, in particular of cracks at welding of steel microstructure in zone of thermal influence near to weld corresponding microstructure of base metal.16 cl, 7 dwg |
