| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method of a galvanized steel sheet capable of reducing a zinc fume amount.SOLUTION: A welding method of a galvanized steel sheet includes: a process (S10) for preparing a galvanized steel sheet; a process (S20) for forming an arc between the galvanized steel sheet and a welding wire, heating and melting the galvanized steel sheet and the welding wire while performing shielding with shield gas, and forming a molten pool; and a process (S30) for solidifying the molten pool. The welding wire is copper-plated and has a diameter of 0.9 mm or less. The shield gas is a mixed gas which comprises carbon dioxide, argon and the remainder consisting of inevitable impurities. Carbon dioxide contained in the shield gas is 1 to 4 vol.%.SELECTED DRAWING: Figure 1 |
