To provide a composite metal plate which can be easily pressure-welded with ordinary rolls, and has excellent joining strength in the pressure-welded zone, and to provide a method for producing the same.
The invention is a method for producing a composite metal plate provided with a first metal plate 1 and a second metal plate 2, and in which the edges of the first metal plate and the second metal plates are joined. The edges parts on the joined sides of the first metal plate 1 and the second metal plate 2 are provided with peak parts 11, 21 formed into projecting shape and valley parts 12, 22 formed into recessed shape. The edge parts of both the metal plates are superimposed in such a manner that the peak part 11 of the first metal plate 1 is engaged with the valley part 22 of the second metal plate 2, and further, the peak part 21 of the second metal plate 2 is engaged with the valley part 12 of the first metal plate 1, and the superimposed parts are subjected to rolling reduction, thus are pressure-welded, and are subjected to diffusion annealing.
COPYRIGHT: (C)2008,JPO&INPIT
Masaaki Ishio
Toshiaki Fujita
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