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Title:
NICKEL-PLATED STEEL SHEET AND PROCESS FOR PRODUCING BATTERY CAN USING THE NICKEL-PLATED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2010/143374
Kind Code:
A1
Abstract:
A nickel-plated steel sheet is provided in which scratch development during battery can formation is inhibited. Also provided is a process comprising a step in which a surface of a steel sheet is plated with nickel in a nickel deposition amount of 0.3-2 µm, a step in which the nickel-plated steel sheet is heated to 600-800ºC to form an Fe-Ni diffusion layer as an outermost layer, and a step in which the steel sheet is temper-rolled to regulate the Fe-Ni diffusion layer so as to have a roughness Ra of 0.9-2.0 µm and a roughness Ry of 4.0-15 µm. A nickel-plated steel sheet which includes an Fe-Ni diffusion layer as an outermost layer and in which the diffusion layer has a roughness Ra of 0.9-2.0 µm and a roughness Ry of 4.0-15 µm and the diffusion layer has such an Fe/Ni ratio that the Fe accounts for 20-50% in Auger analysis is drawn into a battery can using an aqueous solution comprising an aqueous emulsion as a press lubricant.

Inventors:
TAKEMATSU, Shinichi (LTD. Kudamatsu Plant 1302 Higashitoyoi, Kudamatsu-sh, Yamaguchi 11, 〒7448611, JP)
竹松伸一 (〒11 山口県下松市東豊井1302番地 東洋鋼鈑株式会社下松工場内 Yamaguchi, 〒7448611, JP)
OKAMATSU, Eiji (LTD. Kudamatsu Plant 1302 Higashitoyoi, Kudamatsu-sh, Yamaguchi 11, 〒7448611, JP)
Application Number:
JP2010/003642
Publication Date:
December 16, 2010
Filing Date:
May 31, 2010
Export Citation:
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Assignee:
TOYO KOHAN CO., LTD. (2-12, Yonbancho Chiyoda-k, Tokyo 47, 〒1028447, JP)
東洋鋼鈑株式会社 (〒47 東京都千代田区四番町2番地12 Tokyo, 〒1028447, JP)
TAKEMATSU, Shinichi (LTD. Kudamatsu Plant 1302 Higashitoyoi, Kudamatsu-sh, Yamaguchi 11, 〒7448611, JP)
竹松伸一 (〒11 山口県下松市東豊井1302番地 東洋鋼鈑株式会社下松工場内 Yamaguchi, 〒7448611, JP)
International Classes:
B21B1/22; B21D51/26; C25D5/26; C25D5/50; C25D7/00; H01M2/02
Foreign References:
JP2005149735A2005-06-09
JPH06346282A1994-12-20
JP2008041527A2008-02-21
JP2007335205A2007-12-27
JPS61235594A1986-10-20
JPH0345612B21991-07-11
Other References:
See also references of EP 2441532A4
Attorney, Agent or Firm:
OHTA PATENT OFFICE (New State Manor 356, 23-1 Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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