Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Yasuhiro Nagai

Kazuo Ikemoto

Yoshiya Sakai

Keiichiro Hirakoso

Masaharu Sato

Katsuro Iio

Tetsuo Suga

Minoru Oishi

Motomi Kano

Hidehiko Kanehira

Tetsurou Nariai

Toshio Horiuchi

Toshisada Kashimura

Kunio Kaita

Tetsuro Kawaberi

Takakiyo Aoki

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

An arc welding process using a consumable stranded wire electrode which is formed either by integrally intertwisting a plurality of wire elements substantially of the same sectional area such that the lines connecting center points of adjacent wire elements do not form a regular polygon in a sectional plane or by integrally intertwisting a plurality of wire elements of different sectional areas such that the lines connecting center points of wire elements of larger diameter do not form a regular polygon in a sectional plane wherein the consumable electrode is imparted with a bending trait and contacted with a surface on the inner periphery and at the outlet end of a conducting tip, and the arc is directed toward a center weld line to thereby obtain a stable arc.

Arc welding process using a consumable stranded wire electrode

The present invention relates to a method of vertically upward arc welding for vertical and inclined joints. More particularly, the invention relates to a vertically upward arc welding method which includes the step of feeding a strip electrode in a direction at which the plane including the width direction of the strip electrode crosses the weld line, generating an arc from the strip electrode to a molten pool and/or an upper base metal disposed above the surface of the molten pool, melting the upper base metal disposed above a sliding backing shoe on the front surface side of the groove, and performing welding by expanding the groove and simultaneously dropping the molten metal onto the lower molten pool and depositing the same therein.

Vertical welding method

An arc welding process having a welding arc generated between a consumable electrode and the materials to be welded and a welding torch is oscillated along the welding joint line, wherein the arc length is longer when the welding torch is located at the forward side of the oscillation than when the welding torch is located at the backward side of the oscillation with respect to the weld advancing direction, whereby sufficient penetration is obtained.

Arc welding process

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Chigasaki, Japan

Yasuhiro Nagai