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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9708696 B1

PDFFull Text
Date of Patent:
Jul. 18, 2017

Filed:

Dec. 18, 2014

Steel wire material and method for manufacturing same

Applicant:

Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel. Ltd.), Kobe-shi, JP;

Inventors:

Mikako Takeda, Kobe, JP;

Shohei Nakakubo, Kobe, JP;

Kazuhiko Kirihara, Kakogawa, JP;

Masayuki Endo, Kakogawa, JP;

Assignee:

KOBE STEEL, LTD., Kobe-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Scott Kastler

Assistant Examiner:

Vanessa Luk

Int. Cl.
CPC ...
C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/04 (2006.01); C21D 1/74 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); B21B 1/16 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/20 (2006.01); C22C 38/42 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01);
U.S. Cl.
CPC ...
C22C 38/04 (2013.01); B21B 1/16 (2013.01); C21D 1/74 (2013.01); C21D 8/065 (2013.01); C21D 9/525 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/20 (2013.01); C22C 38/42 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01);
Abstract

A method of manufacturing a steel wire material that contains 0.05%-1.2% C ('%' means '% by mass,' same hereinafter for chemical components.), 0.01%-0.7% Si, 0.1%-1.5% Mn, 0.02% max. P (not including 0%), 0.02% max. S (not including 0%), and 0.005% max. N (not including 0%), with the remainder being iron and unavoidable impurities. The steel wire material has a scale 6.0-20 μm thick and holes of an equivalent circle diameter of 1 μm max. in said scale that occupy 10% by area max. Said scale does not detach in the cooling process after hot rolling or during storage or transportation but can readily detach during mechanical descaling.

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