Wire with excellent suitability for drawing and process for producing the same

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United States of America Patent

PATENT NO 9267183
APP PUB NO 20090007998A1
SERIAL NO

12279000

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Abstract

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A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD )10-26 WAKINOHAMA-CHO 2-CHOME CHUO-KU KOBE-SHI HYOGO 651-8585

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishida, Ken Kobe, JP 19 143
Kochi, Takuya Kobe, JP 31 118
Koizumi, Fujio Kobe, JP 4 25
Miyazaki, Shoji Kobe, JP 60 3758
Murakami, Shogo Kobe, JP 26 61
Toyama, Masao Kobe, JP 7 117

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