FLUX CORED WIRE FOR MULTIELECTRODE VERTICAL ELECTROGAS ARC WELDING FOR EXTRA THICK PLATE

摘要

PROBLEM TO BE SOLVED: To provide a flux cored wire capable of giving low temperature high toughness to the welding of metal and obtaining an excellent welding workability in one pass high heat input welding of 35-100 mm thick plate. ;SOLUTION: The wire contains 0.20-1.00% metal fluoride expressed in terms F, 1.0-3.0% slug formation agent including metal fluoride, 0.04-0.15% C, 0.15-0.80% Si, 0.80-2.50% Mn, 0.05-0.25% Al, 0.05-0.40% Mg, 0.05-0.50% Mo, 0.05-0.40% Ti, 0.0020-0.0150% B and further an amount of F which satisfies the following inequality, 1.0 ≥ amount expressed in terms of F≥3Al+0.05.;COPYRIGHT: (C)1999,JPO