| 摘要 |
The method of producing a weld joint according to the present invention involves performing a gas-shielded arc welding, using a flux-cored wire filled with flux into a steel sheath, on a steel plate having a predetermined Vickers hardness HV, a plate thickness, a C content, and a CEN, the method including: during the gas-shielded arc welding, not performing a preheating operation in a case where a temperature of the steel plate is 10°C or higher, and in a case where the temperature of the steel plate is lower than 10°C, performing the preheating operation so that the temperature of the steel plate is 10°C or higher, in which a weld metal of the weld joint has a predetermined chemical composition, a CEN of the weld metal is 0.20 mass% to 0.58 mass%, and an average Vickers hardness HV of the weld metal measured at 1 mm inward from a surface of the weld metal is 337 to 440. |
