NICKEL-PLATED STEEL SHEET AND PROCESS FOR PRODUCING BATTERY CAN USING THE NICKEL-PLATED STEEL SHEET

• Main Authors: MINAGI, Hideyuki, TAKEMATSU, Shinichi, OKAMATSU, Eiji
• Format: Patent
• Language: English; French; German
• Published: 01.02.2017
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

ANi-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, anda 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. ANi-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 emulsion as a press lubricant.