| 摘要 |
PURPOSE:To produce a composite material combined with plate materials having a large difference in deformation resistance by hot pressure welding by superposing respectively outside materials on both top and bottom surfaces of an intermediate material, disposing frame materials over the entire part of the circumferential edge to form a working material and subjecting said material to hot pressure welding then removing the frame materials. CONSTITUTION:Frame materials 4 consisting of a carbon steel are respectively disposed to both side edges and both end edges of superposed plate materials 1-3. The respective joint edges between the materials 1-3 and the materials 4 are subjected to electron beam welding in a vacuum to form weld zones 5 thereby fixing the materials 4 to the materials 1, 3. The intermediate plate material 2 is therefore enclosed over the entire part of the circumferential edge by the materials 4 and is thus retained. The working material constituted in such a way is passed through press welding rolls so that the materials 1-3 are united by hot pressure welding. The elongation of the material 2 is suppressed by the materials 4 by which said intermediate material is surely pressure-welded to the materials 1, 3. The materials 4 are disconnected thereafter by machining and the composite material is thus obtd. |
