| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a welding joint excellent in fatigue strength using a low temperature transformation welding material for improving the fatigue strength of a welding structure indispensable to correction treatment for welding deformation after welding. SOLUTION: In the manufacturing method for the welding joint excellent in the fatigue strength for conducting the correction treatment for the welding deformation after execution of a steel material having yield strength of 400 MPa or larger, or 490 MPa or larger, after the correction treatment for the welding deformation, further a welding metal whose martensitic transformation start temperature 300-150 deg.C or 400-200 deg.C is formed on the welding leader part as an additional bead.
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