Die assembly and method of manufacturing die assembly

摘要

A cutting edge 8 is formed by build-up welding on a die 2 of a die assembly made of a base material of an aluminum and/or copper based zinc alloy. The cutting edge comprises an underlying layer 11 and an overlying layer 12. The underlying layer is made of a copper alloy that can be welded to both a zinc alloy and a nickel alloy, and the overlying layer is made of a nickel alloy. The cutting edge is of high machinability, high durability, and high hardness.