| 摘要 |
The present invention relates to a method for manufacturing a compound metal with different patterns, where the method exploits a sealed casing in which the compound material is inserted. The method comprises the following steps : a) A metal is inserted into a casing. (1). b) The casing is sealed, by which the casing and inserted material (40, 41, 42) are forming a preform. c) Gasses are extracted from the preform. d) The preform is heated until it gains plastic properties. e) The preform is distorted by a rolling process or a hammering process. f) The casing is removed. |
