Title:
COMPOSITE ROD AND PRODUCTION METHOD THEREFOR AND ARC WELDING CONTACT TIP AND RESISTANCE WELDING ELECTRODE COMPRISING THE COMPOSITE ROD
Document Type and Number:
WIPO Patent Application WO/2004/096468
Kind Code:
A1
Abstract:
A composite rod which is suitably used as an arc welding contact tip and a resistance welding electrode material, and is formed by inserting a core material having a dispersion-strengthened copper alloy section at at least the inner side portion thereof excluding a outer skin portion into an outer tube material consisting of copper or copper alloy and drawing them together, a ratio between the diameter of the whole rod and that of the dispersion-strengthened copper alloy section being 0.1-0.49. In this composite rod, a proportion accounted for by the dispersion-strengthened copper alloy section can be minimized while still retaining a performance required when the rod is worked into an arc welding contact tip or a resistance welding electrode, thereby enabling a significant cost reduction compared to a conventional aluminum dispersed copper rod.
Inventors:
ISEJIMA TSUYOSHI (JP)
Application Number:
PCT/JP2003/005496
Publication Date:
November 11, 2004
Filing Date:
April 30, 2003
Export Citation:
Assignee:
KANSAI PIPE IND LTD (JP)
ISEJIMA TSUYOSHI (JP)
ISEJIMA TSUYOSHI (JP)
International Classes:
B22F7/06; B23K35/02; (IPC1-7): B22F7/00
Foreign References:
| JPH01263203A | 1989-10-19 | |||
| US4478787A | 1984-10-23 | |||
| JPS60135503A | 1985-07-18 |
Attorney, Agent or Firm:
Hibi, Norihiko c/o KISHIMOTO & CO. (3rd Floor Inaba Building, 13-18,
Nishishinsaibashi 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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