| 摘要 |
PROBLEM TO BE SOLVED: To provide an Al.Cu clad plate capable of precisely molding a desired shape without slipping out of place or peeling of joined Al sheet and Cu sheet even if deep drawing is applied, and to provide a battery case using it and manufacturing method of those. SOLUTION: A genuine Al sheet 2 and a genuine Cu sheet 4 are integrally joined with a genuine Ni thin layer 6 having 0.3-15μm thickness therebetween. A battery case 8 is formed by drawing a cladded sheet 1 into a cylindrical shape having the bottom. The genuine Ni thin layer 6 having 20μm thickness is coated on one surface of the genuine Cu sheet 4 by deposition, and the surface of the thin layer 6 is pressed by a wire brush 7 for activating and forming fine recessed and projected lines. And then, the genuine Al sheet 2 is placed thereon for applying contact bonding and rolling through a pair of rolls with a processing rate of 50%, so that the thickness of the genuine Ni thin layer 6 is 10μm. After the rolling process, diffusing annealing is performed at a temperature of 200-600 deg.C.
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