Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Kazuo Ikemoto

Yoshiya Sakai

Yasuhiro Nagai

Shigeo Nagaoka

Hidehiko Kanehira

Minoru Yamada

Masaharu Sato

Tsuyoshi Kurokawa

Tetsuo Suga

Koichi Hosoi

Isao Aida

Toshio Arai

Tetsuya Hashimoto

Takakiyo Aoki

Disclosed is a flux-cored wire for gas shield arc welding comprising a mild steel sheath and a flux composition filled in the mild steel sheath, wherein the mild steel sheath is made of a mild steel containing, based on the total weight of the sheath, 0.02% or less of C, 0.01 to 0.20% of Ti, and 0.01 to 0.15% of Al, the contents of Ti and C satisfying a relation of (Ti/C.gtoreq.1.0) and the contents of Al and C satisfying a relation of (Al/C.gtoreq.1.5); and the flux composition contains, based on the weight of the total wire, 0.50 to 3.60% of Mn (including the Mn amount in the sheath), and 0.10 to 1.80% of Si (including the Si amount in the sheath).

Flux-cored wire for gas shield arc welding with low fume

A flux-cored wire for gas-shielded arc welding comprises a steel sheath and a flux composition filled in the steel sheath. The flux composition is present in an amount of 8 to 25 wt. %, based on the total amount of the steel sheath and the flux composition. The flux composition comprises, based on the total weight of the flux, 10 to 30% of TiO.sub.2, 0.1 to 0.6% of Na.sub.2 O is in the range of 20 to 100:1, 0.01 to 2.0% of a metal fluoride calculated as F, and 0.005 to 0.4% of moisture. Bi.sub.2 O.sub.3 may also be included in the composition.

Flux-cored wire for gas shielded arc welding

There are disclosed flux cored wire electrodes for self-shielded arc welding which comprise a steel sheath filled with a powdery flux containing as essential components thereof the following components set forth in terms of weight percentage: BaF.sub.2 (25-70), alkali metal fluoride (1-30), compound oxide composed of the oxide of an alkaline earth metal selected from among Ca, Sr, and Ba and the oxide of a metal selected from among Fe, Mn, Ni, Co, Ti, Al and Zr (1-30), Al (3-12), Mg (2-10) and Mn (0.5-10).

Flux cored wire electrodes for self-shielded arc welding

A flux-cored welding electrode for gas-shielded arc welding comprising a mild steel sheath and a flux core, said flux core having the following composition based on the total weight of the electrode:

Flux-cored wire for gas-shielded arc welding

A flux-cored wire for use in gas shielded arc welding wherein flux of the following composition (weight % with regard to the entire wire) is inserted as a core into a metallic casing and the whole hydrogen content (H) of the wire is defined as 15 ppm .ltoreq.H.ltoreq.139+440F ppm (F: the weight % of fluorine with regard to the entire wire):

Flux-cored wire for use in gas-shielded arc welding

Growing community of inventors

Chigasaki, Japan

Kazuo Ikemoto