WIRE WITH EXCELLENT SUITABILITY FOR DRAWING AND PROCESS FOR PRODUCING THE SAME

Title:

WIRE WITH EXCELLENT SUITABILITY FOR DRAWING AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/099671

Kind Code:

A1

Abstract:

A hot-rolled wire which has excellent suitability for drawing and which, even when heavily drawn from a large diameter, can be sufficiently inhibited from breaking. The hot-rolled wire contains 0.35-0.65% C, 1.4-3.0% Si, 0.10-1.0% Mn, 0.1-2.0% Cr, up to 0.025% (excluding 0%) P, up to 0.025% (excluding 0%) S, up to 0.006% (excluding 0%) N, up to 0.1% (excluding 0%) Al, and up to 0.0030% (excluding 0%) O, with the remainder being iron and unavoidable impurities. The content of hydrogen in the steel is 2.50 ppm or lower. The wire has a hardness (HV) not higher than 460×C0 0.1 (wherein C0 indicates carbon content (mass%) in the position located at a depth of D/4 (D: diameter of the wire)).

Inventors:

KOCHI TAKUYA (JP)
MURAKAMI SHOGO (JP)
MIYAZAKI SHOJI (JP)
ISHIDA KEN (JP)
TOYAMA MASAO (JP)
KOIZUMI FUJIO (JP)

Application Number:

PCT/JP2006/322130

Publication Date:

September 07, 2007

Filing Date:

November 07, 2006

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)
KOCHI TAKUYA (JP)
MURAKAMI SHOGO (JP)
MIYAZAKI SHOJI (JP)
ISHIDA KEN (JP)
TOYAMA MASAO (JP)
KOIZUMI FUJIO (JP)

International Classes:

C22C38/00; B21B1/02; B21B3/00; C21D3/06; C21D8/06; C21D9/52; C22C38/34; C22C38/54

Foreign References:

JP2000239797A	2000-09-05
JP2004002994A	2004-01-08
JP2003253391A	2003-09-10
JPH0257367A	1990-02-27
JPH01222069A	1989-09-05
JP2004137597A	2004-05-13

Other References: