WIRE FOR GAS-SHIELDED ARC WELDING

摘要

PROBLEM TO BE SOLVED: To provide a wire for gas-shielded arc welding, which shows excellent wire-feeding property without running out of lubricant even if used in such a severe environment that wire bending or the like makes feed resistance higher. SOLUTION: The wire for gas-shielded arc welding has a phosphate film of 0.05-0.6μm on its wire surface. Regarding its surface roughness, a load length ratio tp[L/Cv=30%] is 40-90% and an arithmetic average roughness Ra[L] is 0.05-0.20μm. An adhered amount of the feed lubricant on the wire surface is 0.1-4.0 g per 10 kg wire. Regarding the color tone of the wire surface, the L value of lightness is 40-60 and the C value of chroma is 1-10. COPYRIGHT: (C)2004,JPO