Title:
SHIELDING GAS FOR MAG WELDING OF GALVANIZED SHEET STEEL, AND WELDING METHOD USING THE SHIELDING GAS
Document Type and Number:
Japanese Patent JP2009012027
Kind Code:
A
Abstract:
To provide shield gas for preventing generation of any blow holes or pits in a weld part when performing a lap fillet welding of a galvanized steel sheet by the MAG (metal active gas) welding method.
A three component mixed gas composed of x vol.% of carbon dioxide, y vol.% of oxygen, and argon for the balance is used. The mixing ratio of carbon dioxide and oxygen simultaneously satisfies the following inequalities. y10 (1), y-x+45 (2), x40 (3), y-1/10x+5.5 (4), y1/20x-2 (5), y0 (6), y1/30x-5/3 (7), y-1/20x+5.5 (8), y3/40x-7/4 (9), and y-1/3x+35 (10).
Inventors:
WADA KATSUNORI
Application Number:
JP2007175250A
Publication Date:
January 22, 2009
Filing Date:
July 03, 2007
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP
International Classes:
B23K9/16; B23K9/173; B23K9/23; B23K103/04; B23K103/16
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
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