Daido Tokushuko Kabushiki Kaisha

Kohachiro Ohashi

Takashi Suzuki

Toshiharu Noda

Takao Shimizu

Shigeo Hanajima

Kazuhiro Toyoda

Makoto Chujoya

Takashi Orii

Bunji Naito

A Ti-base wire rod for forming molten metal excellent both in rod feeding smoothness and arc stability is disclosed. A wire rod is composed of Ti metal, and has in the surficial portion including the surface thereof an oxygen enriched layer having an oxygen concentration higher than that in an inner portion. Ratio T /D of the thickness T of the oxygen enriched layer and the diameter D of the wire rod is adjusted within a range of 1&times;10 to 1&times;10 , and the average oxygen concentration of the oxygen enriched layer is adjusted to 1 wt % or above.

Ti-base wire rod for forming molten metal

The rolling apparatus 1 comprises a first roller-couple 101a,101b and a second roller-couple 102a,102b which are arranged adjacently in a feeding direction of work material A1 and roll the work material A1 in different directions each other successively. Each of the first and second roller-couples comprises two rollers each of which has a groove for determining the cross sectional shape of the wire on the circumferential surface thereof. The width of the grooves are less than 7 mm for the first roller-couple 101a,101b and are less than 6 mm for the second roller-couple 102a,102b. The center distance between the first and second roller-couples 101a,101b and 102a,102b is less than 50 mm.

Method and an apparatus for manufacturing wire

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Nagoya, Japan

Kohachiro Ohashi