Title:
COLD-ROLLED STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2014/119078
Kind Code:
A1
Abstract:
Cold-rolled steel that resists heat spots and wear well is provided. Said cold-rolled steel contains 0.03-0.12% carbon, 0-1.0% silicon, 0.2-0.8% manganese, more than 0% but no more than 0.03% phosphorus, more than 0% but no more than 0.03% sulfur, 0.04-0.3% titanium, and more than 0% but no more than 0.05% aluminum. The remainder comprises iron and unavoidable impurities. The percentages of carbon, silicon, manganese, and aluminum satisfy the relation 5C - Si + Mn −1.5Al < 1. The mean grain diameter of titanium carbide is between 20 and 100 nm, inclusive. The cross-sectional hardness of this cold-rolled steel is between 200 and 400 HV, inclusive. Finely and uniformly dispersing titanium carbide throughout this cold-rolled steel improves the resistance thereof to heat spots and wear.
Inventors:
IMANAKA TOMOHIRO (JP)
OMOSAKO KOUJI (JP)
SUZUKI MASAHITO (JP)
OMOSAKO KOUJI (JP)
SUZUKI MASAHITO (JP)
Application Number:
PCT/JP2013/079834
Publication Date:
August 07, 2014
Filing Date:
November 05, 2013
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; C21D9/46; C22C38/14; C22C38/54
Foreign References:
| JP2011001604A | 2011-01-06 | |||
| JP2005249050A | 2005-09-15 | |||
| JP2005249051A | 2005-09-15 | |||
| JP2005249106A | 2005-09-15 | |||
| JP2008266731A | 2008-11-06 | |||
| JP2010132983A | 2010-06-17 | |||
| JP2001073073A | 2001-03-21 | |||
| JP2003277883A | 2003-10-02 | |||
| JP2007211260A | 2007-08-23 | |||
| JP2004162153A | 2004-06-10 |
Other References:
See also references of EP 2952599A4
Attorney, Agent or Firm:
KABASAWA Joo et al. (JP)
Noboru Kabasawa (JP)
Noboru Kabasawa (JP)
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