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AssigneeDaido Tokushuko Kabushiki Kaisha
InventorsKazuhiro Toyoda, Makoto Chujoya, Shigeo Hanajima, Takashi Suzuki, Takashi Orii, Takao Shimizu, Toshiharu Noda, Bunji Naito, Kohachiro Ohashi
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A Ti-base wire rod for forming molten metal excellent both in rod feeding smoothness and arc stability is disclosed. A wire rod 301 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 Tw/Dw of the thickness Tw of the oxygen enriched layer and the diameter Dw of the wire rod is adjusted within a range of 1×10−3 to 1×10−1, and the average oxygen concentration of the oxygen enriched layer is adjusted to 1 wt % or above.
A Ti-base wire rod for forming molten metal which is serially melted from an end under heating to thereby produce molten metal comprising Ti or Ti alloy, wherein at least a portion including the surface of the wire rod comprises Ti metal or Ti alloy mainly composed of Ti, and the surficial portion of the wire rod including the surface thereof has formed therein an oxygen enriched layer having an oxygen concentration higher than that of the inner portion and having a thickness larger than that of native oxide film possibly formed on the Ti metal in the air under ordinary temperature.
The Ti-base wire rod for forming molten metal which is serially melted from an end under heating to thereby produce molten metal comprising Ti or Ti alloy, wherein at least a portion including the surface of the wire rod comprises Ti metal or Ti alloy mainly composed of Ti, and the surficial portion of the wire rod including the surface thereof has formed therein an oxygen enriched layer having an oxygen concentration higher than that of the inner portion,
Dependencies are inferred from the claim text.