STEEL WIRE AND METHOD OF MANUFACTURING THE SAME

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.

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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:

JPH07197390A	1995-08-01
JPH06184966A	1994-07-05
JPH08260096A	1996-10-08
JPH08284082A	1996-10-29
JPH07305285A	1995-11-21

Other References: