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1. (WO2018079131) WELDED MEMBER AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2018/079131    International Application No.:    PCT/JP2017/033542
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: B23K 9/02
B23K 9/23
C22C 18/04
B23K 103/16
Applicants: NISSHIN STEEL CO., LTD.
日新製鋼株式会社
Inventors: HOSOMI, Kazuaki
細見 和昭
NOBUTOKI, Tomokazu
延時 智和
NAKAKO, Takefumi
仲子 武文
Title: WELDED MEMBER AND METHOD FOR MANUFACTURING SAME
Abstract:
Provided are a welded member and a method for manufacturing the same, the welded member having excellent corrosion resistance with a hot-dip-galvanized steel plate as the base metal thereof, and excellent shear strength of a weld bead. A welded member (10) in which a bottom plate (3) and a top plate (1) which are hot-dip-galvanized steel plates are superposed on each other and arc-welded, a weld bead (2) being formed so that the cross-sectional width W thereof satisfies formula (1) and the blowhole occupancy ratio Br thereof indicated by formula (2) is 50% or less. (1): 2T ≤ W ≤ 6T. (2): Br = (Σdi/L) × 100. (In the formulas, T is the thickness of the hot-dip-galvanized steel plates, di is the length of the ith blowhole observed by X-ray inspection, and L is the length of the weld bead.)