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Patent Searching and Data


Title:
STEEL WIRE AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/1998/053134
Kind Code:
A1
Abstract:
A steel wire, 0.10-0.40 mm in diameter, obtained by subjecting a high-carbon (0.70-0.90 wt.%) steel wire material to heat treatment and wire drawing, wherein its tensile strength and test values of special repeated torsional tests satisfy a predetermined relation; and a method of manufacturing the same. A high strength steel wire which has so high a ductility as to substantially prevent the wire from being broken even during wire twisting, and which rarely encounters a decrease in the ductility even after the wire has been subjected to age hardening by heating, is obtained, and a method of manufacturing the same is economical.

Inventors:
KANEKO YOSHIKAZU (JP)
OBANA NAOHIKO (JP)
FUJITA MASUHIRO (JP)
MASUBUCHI HIDEKI (JP)
KOBAYASHI TOSHIYUKI (JP)
Application Number:
PCT/JP1998/002198
Publication Date:
November 26, 1998
Filing Date:
May 20, 1998
Export Citation:
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Assignee:
BRIDGESTONE METALPHA CORP (JP)
KANEKO YOSHIKAZU (JP)
OBANA NAOHIKO (JP)
FUJITA MASUHIRO (JP)
MASUBUCHI HIDEKI (JP)
KOBAYASHI TOSHIYUKI (JP)
International Classes:
B21C1/00; D07B1/06; B21C37/04; B29D30/38; C21D8/06; (IPC1-7): D07B1/06
Foreign References:
JPH07197390A1995-08-01
JPH06184966A1994-07-05
JPH08260096A1996-10-08
JPH08284082A1996-10-29
JPH07305285A1995-11-21
Other References:
See also references of EP 1013819A4
Attorney, Agent or Firm:
Honda, Ichiro (5-7 Nishikanda 2-chom, Chiyoda-ku Tokyo, JP)
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