SOFT BLACKPLATES FOR TINNING AND PRODUCTION METHOD FOR THE SAME

Title:

SOFT BLACKPLATES FOR TINNING AND PRODUCTION METHOD FOR THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/000109

Kind Code:

A1

Abstract:

Soft blackplates for tinning comprise (wt.%) up to 0.006 C, 0.10-0.20 Mn, 0.025-0.075 Al, up to 0.03 Si, 0.03-0.08 Ti, up to 0.015 P, up to 0.015 S, up to 0.003 N, up to 0.004 O, and the balance Fe and other inevitable impurities. The method for producing the soft blackplates involves steelmaking, continuous casting, hot rolling, combination of pickling and cold tandem rolling, continuous annealing, and temper rolling. The main process parameters in the method are as follows: slab delivering temperature is between 1190 deg. C and 1250 deg. C, final rolling temperature is between 880 deg. C and 920 deg. C, coiling temperature is between 550 deg. C and 630 deg. C, deformation of cold rolling is 82-92%, annealing temperature is 720-770 deg. C, holding time is 25-50 seconds, temper elongation of T-1CA is 0.8-1.8%, temper elongation of T-2CA is 1.8-3.0%.

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Inventors:

LI JUN (CN)
ZHANG LIYANG (CN)
LIN XIUZHEN (CN)
GONG XUENAN (CN)

Application Number:

PCT/CN2006/001460

Publication Date:

January 04, 2007

Filing Date:

June 26, 2006

Export Citation:

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Assignee:

BAOSHAN IRON & STEEL (CN)
LI JUN (CN)
ZHANG LIYANG (CN)
LIN XIUZHEN (CN)
GONG XUENAN (CN)

International Classes:

C22C38/14; C21D8/04; C21D9/48; C25D3/30

Foreign References:

CN1176667A	1998-03-18
CN1273612A	2000-11-15
CN1303446A	2001-07-11
US4698102A	1987-10-06
KR20040057704A	2004-07-02
KR20010064849A	2001-07-11
KR20010109930A	2001-12-12
KR920005614B1	1992-07-10

Other References:

LI J.: "Principle of the Metallurgical Process Control on Black Sheet Production", BAOGANG TECHNOLOGY, no. 4, August 1998 (1998-08-01), pages 41 - 44
LI J.: "Review on Application Performances of DI Tinplate at Baosteel", BAOGANG TECHNOLOGY, no. 6, December 2000 (2000-12-01), pages 11

Attorney, Agent or Firm:

SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC. (SHANGHAI 3, CN)

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