Patent ID: 6340396
Filing Date: 2002-01-22
Classification: B23K

Abstract:
A flux cored wire for welding duplex stainless steel, comprising a shell cored with a flux, whereinthe total of the shell and the flux comprises MgO, Cr, Mo and N in amounts of 0.08-0.35 wt %, 21.0-26.0 wt %, 2.6-4.0 wt % and 0.08-0.30 wt %, respectively, of the total weight of the wire; the amounts of C and Bi in said wire and a metal having a melting point over 2000Â° C. in said flux are 0.04 wt % or less, 0.015 wt % or less, and 0.1 wt % or less, respectively, of the total weight of the wire; the total amount of Ni powder and Fe powder in said flux is 3.0 wt % or less of the total weight of the wire; and a parameter A represented by {Cr}+3.3Ã—{Mo}+16Ã—{N}âˆ’150Ã—{Bi}, where {Cr}, {Mo}, {N} and {Bi} represent the contents of Cr, Mo, N and Bi, respectively, is from 33.0 to 43.0 wt % of the total weight of the wire.