Title:
METHOD FOR MANUFACTURING STEEL PLATE FOR CAN-MAKING
Document Type and Number:
WIPO Patent Application WO/2010/074308
Kind Code:
A1
Abstract:
In a method for manufacturing a steel plate for cans, when steal, the component composition of which is comprised of, in terms of mass%, C: 0.005% or less, Mn: 0.05-0.5%; Al: 0.01-0.10%, N: 0.0010-0.0070%, B: 0.15 × N-0.75 × N (0.15-0.75 in terms of B/N), one kind or two kinds selected from Nb: 4 × C-20 × C (4-20 in terms of Nb/C) and Ti: 2 × C-10 × C (2-10 in terms of Ti/C), and Fe and inevitable impure elements for the rest, is turned into a slab by means of continuous casting and applied with finishing rolling after rough rolling, the steel undergoes hot rolling which is 5% or greater and less than 50% of the total reduction amount in the finishing rolling at a temperature lower than the Ar3 transformation point, is next winded at a winding temperature of 640-750°C, is applied with cold rolling at a reduction rate of 88-96% after pickling, and is annealed in the temperature range from greater than 400°C to (recrystallization temperature ‑20)°C. With this manufacturing method, variations of plate thickness in the length direction of a steel plate coil can be controlled, and a high-strength steel plate for cans with ductility required for can-making can be obtained.
Inventors:
KOJIMA KATSUMI (JP)
TANAKA TAKUMI (JP)
TADA MASAKI (JP)
ARATANI MAKOTO (JP)
IWASA HIROKI (JP)
TANAKA TAKUMI (JP)
TADA MASAKI (JP)
ARATANI MAKOTO (JP)
IWASA HIROKI (JP)
Application Number:
PCT/JP2009/071844
Publication Date:
July 01, 2010
Filing Date:
December 22, 2009
Export Citation:
Assignee:
JFE STEEL CORP (JP)
KOJIMA KATSUMI (JP)
TANAKA TAKUMI (JP)
TADA MASAKI (JP)
ARATANI MAKOTO (JP)
IWASA HIROKI (JP)
KOJIMA KATSUMI (JP)
TANAKA TAKUMI (JP)
TADA MASAKI (JP)
ARATANI MAKOTO (JP)
IWASA HIROKI (JP)
International Classes:
C21D9/46; B21B3/00; C22C38/00; C22C38/14
Foreign References:
| JPH1046243A | 1998-02-17 | |||
| JPH09316543A | 1997-12-09 | |||
| JP2001064730A | 2001-03-13 | |||
| JP2000199031A | 2000-07-18 | |||
| JPH04280926A | 1992-10-06 | |||
| JPH0841549A | 1996-02-13 | |||
| JPH06248339A | 1994-09-06 |
Other References:
See also references of EP 2380999A4
Attorney, Agent or Firm:
OCHIAI, Kenichiro (JP)
Ken-ichiro Ochiai (JP)
Ken-ichiro Ochiai (JP)
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