| 摘要 |
PROBLEM TO BE SOLVED: To provide a designed rolled clad lamella which joins a multilayer hard metal plate and an aluminum plate by a rolling method, has irregularity on the surface of the multilayer hard metal plate and has a spotted pattern comprising plural color tones in which at least one of plural hard metal layers is exposed on the surface.SOLUTION: A rolled clad lamella comprises a multilayer hard metal plate comprising plural hard metal layers joined by a rolling method, and another metal plate. The lamella has the irregularity pattern having a depth of 5 μm or more on at least one surface on which the multilayer hard metal plate is exposed, and has at least one boundary zone comprising the hard metal layer having a thickness of 2 μm or more in the interval from the outermost surface of one side face to the depth of 100 μm. Further, the surface of one outermost surface layer after final polishing of the depth exceeding the thickness of the hard metal layer has a spotted pattern comprising plural color tones in which at least one of plural hard metal layers is exposed.SELECTED DRAWING: None |
