RAILS BUTT WELDING METHOD Russian patent published in 2006 - IPC B23K9/02 B23K31/02 B23K33/00 B23K101/26 E01B11/50 

FIELD: electric arc welding processes, mainly manual electric arc welding of railway road rails.

SUBSTANCE: method comprises steps of placing rails with gap between their welded edges; introducing in gap consumable electrode and welding rails with use of forms mounted near welding zone at electric current intensity sufficient for creating liquid bath in the whole volume of gap; preliminarily mechanically working edges of rails or edge of one rail by cross cutting of rail in vertical plane from rail head till beginning of rail flange; horizontally cutting end face of rail normally to previous cut; chamfering end face of rail at rounding it near base of rail flange. At formation of liquid bath in root of seam, edges of base metal of rails are additionally melted.

EFFECT: improved mechanical properties of welded seam similar to those of base metal, increased useful life period of rails.

2 dwg, 1 ex