METHOD OF PRODUCING STEEL WIRE

Title:

METHOD OF PRODUCING STEEL WIRE

Document Type and Number:

WIPO Patent Application WO/2010/101154

Kind Code:

A1

Abstract:

Disclosed is a method of producing a steel wire having good tensile strength with little machining energy. Specifically disclosed is a method of producing a steel wire, comprising a pre-wire drawing step for producing a semi-finished wire rod by drawing a high-carbon steel wire rod containing 0.90-1.20 mass% of carbon, a heat treatment step for producing a heat treated wire rod by carrying out patenting heat treatment on the semi-finished wire rod, and a final wire drawing step for producing a steel wire by drawing the heat treated wire rod, wherein the amount of wire drawing (εf) in the final wire drawing step satisfies the relation represented by the expression: εf=21n(D0/Df) (in the expression, Df denotes the final diameter of a steel wire obtained in the final wire drawing step, D0 denotes the diameter of the heat treated wire rod prior to the final wire drawing step, and ln denotes natural logarithm), and the amount of wire drawing (εf) in the final wire drawing step is 2.50-3.10.

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Inventors:

ABE YASUYUKI (JP)

Application Number:

PCT/JP2010/053352

Publication Date:

September 10, 2010

Filing Date:

March 02, 2010

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)
ABE YASUYUKI (JP)

International Classes:

B21C1/00; D07B1/06

Foreign References:

JP2007111767A	2007-05-10
JPH11241280A	1999-09-07
JPH08132128A	1996-05-28
JPH08218282A	1996-08-27
JPH10325089A	1998-12-08
JPH11241280A	1999-09-07
JPH06136453A	1994-05-17
JP2007111767A	2007-05-10
JP2008069409A	2008-03-27
JPH08260096A	1996-10-08
JPH08325964A	1996-12-10

Other References: