Invention Grant
- Patent Title: Nickel-plated steel sheet and process for producing battery can using the nickel-plated steel sheet
- Patent Title (中): 镀镍钢板和电池的制造方法可以使用镀镍钢板
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Application No.: US13377258Application Date: 2010-05-31
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Publication No.: US08734961B2Publication Date: 2014-05-27
- Inventor: Shinichi Takematsu , Eiji Okamatsu , Hideyuki Minagi
- Applicant: Shinichi Takematsu , Eiji Okamatsu , Hideyuki Minagi
- Applicant Address: JP Tokyo
- Assignee: Toyo Kohan Co., Ltd.
- Current Assignee: Toyo Kohan Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Browdy and Neimark, PLLC
- Priority: JP2009-138540 20090609
- International Application: PCT/JP2010/003642 WO 20100531
- International Announcement: WO2010/143374 WO 20101216
- Main IPC: C25D5/50
- IPC: C25D5/50 ; H01M2/02 ; B21B1/22 ; B21D51/26 ; C25D5/16 ; C25D3/12 ; C25D7/00

Abstract:
A Ni-plated steel sheet is provided in which the occurrence of scratches at the time of forming a battery can is suppressed. Also provided is a method which includes a step where a surface of a steel sheet is plated with Ni in a Ni adhesion amount of 0.3-2 μm, a step where the Ni-plated steel sheet is heated to 600-800° C. to form an Fe−Ni diffusion layer as an outermost surface layer, and a step where the steel sheet is rolled by temper rolling so as to adjust the Fe−Ni diffusion layer so that the steel sheet has the surface roughness Ra of 0.9-2.0 μm and the surface roughness Ry of 4.0-15 μm. A Ni-plated steel sheet which includes an Fe−Ni diffusion layer as an outermost surface layer and in which the diffusion layer has the surface roughness Ra of 0.9-2.0 μm and the surface 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 subjected to drawing using a water-soluble liquid which contains water-soluble emersion as a press lubricant.
Public/Granted literature
- US20120171518A1 NICKEL-PLATED STEEL SHEET AND PROCESS FOR PRODUCING BATTERY CAN USING THE NICKEL-PLATED STEEL SHEET Public/Granted day:2012-07-05
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