| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid mold which unites characteristics of high strength of steel material and high heat conduction of a nonferrous metal body (copper alloy body).SOLUTION: The hybrid mold is characterized in that at least a heat exchange range of the forming mold 1 is formed of the nonferrous metal body 3 (copper alloy body 3A), the nonferrous metal body is provided with a cavity E and a product relating part 7, a load concentration range which is susceptible to damage in a product-forming surface (e) of the cavity and a cavity continuous part 3a of a parting line PL of the product relating part are thinned into a thickness of several millimeters or less, the build-up welding of a ferrous material F having a fusion temperature higher than that of the nonferrous metal body is performed to form a ferrous build-up part 4 on a thin thickness part 13 by using a heat source of high energy density, a finish-processed iron material layer 4A is disposed on the build-up part surface 4a and the load concentration range susceptible to damage of the nonferrous metal body in the iron material layer is protected. Further, by constituting the forming mold 1 with a steel material mold 10 and a nesting mold 20 made of the nonferrous metal body, the same characteristics can be obtained. |
