| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hybrid mold that takes advantage of high strength of a steel material for a mold and high heat conductivity of a nonferrous metal body (a copper alloy body). <P>SOLUTION: At least a heat exchange area of a molding die 1 formed of a steel material for a mold is formed of a nonferrous metal body 3 (a copper alloy body 3A). The nonferrous metal body is provided with a cavity E and a product related part 7. A damageable load concentration area in a product-forming surface of the cavity and a cavity continuous part 3a of a parting line PL of the product related part are formed to have a thickness of several millimeters or less. A ferrous material having a fusion temperature higher than that of the nonferrous metal body is build-up welded on a thin part 13 by using a heat source of high energy density to cover the thin part with a ferrous build-up part 4. A finished iron material layer 4A is disposed on a surface of the ferrous build-up part and the damageable load concentration area of the nonferrous metal body is protected by the iron material layer. The same applies to the case where the molding die is formed of a steel material mold and a nesting mold made of the nonferrous metal body. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
