Patent ID: 6620261
Filing Date: 2003-09-16
Classification: B23K

Abstract:
Flux cored wire for dual stainless steel having flux filled into a stainless steel sheath, said flux containing, with respect to the total weight of the wire: 0.02 to 0.10 wt % C; 0.10 to 1.0 wt % Si; 1.0 to 3.0 wt % Mn; 15 to 35 wt % Cr; 7.0 to 12.0 wt % Ni; 1.5 to 3.5 wt % Mo; 0.02 to 0.2 wt % N; 0.02 to 0.2 wt % Nb; and 0.5 to 5.6 wt % slag forming agent, wherein the components of said flux satisfy the following equations 1 and 2:1.5&lE;{(Cr+Mo+1.5Si+0.5Nb)/(Ni+0.5Mn+30C+30N)}&lE;2.3â€ƒâ€ƒ(1) and 25&lE;PREN&gE;45â€ƒâ€ƒ(2). wherein PREN (Pitting Resistance Equivalent Number)=(Cr+3.3Mo+16N), and said flux is filled into the stainless steel sheath at 15 to 35 wt % in respect to the total weight of the wire.