METHOD FOR FEEDING FLUX-CORED WELDING WIRE

摘要

PROBLEM TO BE SOLVED: To provide a method for feeding a flux-cored welding wire by which excellent feedability is maintained even for a long torch having a liner length of 12 m or over. SOLUTION: In this method for feeding the flux-cored welding wire, the flux-cored welding wire having surface lubricant thereon is fed to a liner of 12-27 m by a push system of a plurality of pairs of feed rollers at a feeding resistance R satisfying the inequality R<b (kgf) (where, b is the critical buckling resistance (kgf) of the wire), and at a slip ratio S satisfying S<=2R(%) (where, R is the feed resistance (kgf)).