HIGH-STRENGTH HIGH-PROCESSABILITY STEEL SHEET FOR CANS AND METHOD FOR PRODUCING SAME

Title:

HIGH-STRENGTH HIGH-PROCESSABILITY STEEL SHEET FOR CANS AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2013/018334

Kind Code:

A1

Abstract:

Provided are a high-strength high-processability steel sheet for cans and a method for producing the same. The steel sheet for cans comprises: 0.001-0.080% inclusive of C; 0.003-0.100% inclusive of Si; 0.10-0.80% inclusive of Mn; 0.001-0.100% inclusive of P; 0.001-0.020% inclusive of S; 0.005-0.100% inclusive of Al; 0.0050-0.0150% inclusive of N; and 0.0002-0.0050% inclusive of B, with the balance being Fe and unavoidable impurities. In a cross section in the rolling direction, the steel sheet for cans contains 0.01-1.00%, in terms of area, of crystal grains that have a crystal-grain elongation rate of 5.0 or greater. The steel sheet for cans can be obtained by using a slab re-heating temperature of 1200oC or higher, hot-rolling a slab, then winding the same at a temperature lower than 650oC, conducting primary cold-rolling, subsequently conducting continuous annealing at a soaking temperature of 680-760oC for a soaking time of 10-20 seconds, and then conducting secondary cold-rolling at a rolling ratio of 20% or less.

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Inventors:

TANAKA TAKUMI (JP)
KOJIMA KATSUMI (JP)
TOBIYAMA YOICHI (JP)

Application Number:

PCT/JP2012/004790

Publication Date:

February 07, 2013

Filing Date:

July 27, 2012

Export Citation:

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Assignee:

JFE STEEL CORP (JP)
TANAKA TAKUMI (JP)
KOJIMA KATSUMI (JP)
TOBIYAMA YOICHI (JP)

International Classes:

C22C38/00; B21B3/00; C21D9/46; C22C38/06; C22C38/54

Foreign References:

JP2010180423A	2010-08-19
JP2008163390A	2008-07-17
JPH05263143A	1993-10-12
JPH05271755A	1993-10-19
JP2001107186A	2001-04-17
JP2007204800A	2007-08-16

Attorney, Agent or Firm:

KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)

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