Patent ID: 8955554
Filing Date: 2015-02-17
Classification: B23K

Abstract:
1. A submerged arc welding method for a steel plate wherein, in performing internal-and-external one layer welding on a steel plate by submerged arc welding, a sum of a cross-sectional area of internal weld metal S 1 and a cross-sectional area of external weld metal S 2 satisfies the formula (1), the cross-sectional area of the internal weld metal S 1 satisfies the formula (2), and the cross-sectional area of the external weld metal S 2 satisfies the formula (3); wherein t is a plate thickness of the steel plate (mm), S 1 is a cross-sectional area of the internal weld metal (mm 2 ) excluding a cross-sectional area of a portion of the internal weld metal overlapping with external weld metal after external welding, and S s is a cross-sectional area of the external weld metal (mm 2 ).