Flux-cored welding wire and arc welding method of overlay welding using this

摘要

PROBLEM TO BE SOLVED: To provide a flux-cored welding wire and a method for arc overlay welding using the same attaining excellent weldability and low dilution ratio and obtaining a weld bead excellent in corrosion resistance in performing overlay welding using the flux-cored welding wire having the advantage of high deposition rate and deposition efficiency.;SOLUTION: The flux-cored welding wire for gas shielded arc welding including flux filled up in a shell and using pure Ar as shielding gas, contains, as percentage to the total mass of the flux-cored welding wire, by mass, C: ≤0.20%, Si: ≤15.00%, Mn: ≤20.00%, P: ≤0.0500%, S: ≤0.0500%, and Cr: 15.0-50.0%, with the balance being Fe and inevitable impurities.;COPYRIGHT: (C)2012,JPO&INPIT