Composite tooth-forming rack and method for making same

摘要

A composite tooth-forming rack useful for pressure forming teeth in a workpart is provided and includes an elongated carbon steel base and an elongated toothed insert of high speed steel joined to the base by a metallic bonding agent, such as silver solder, having a melting temperature below the solution annealing temperature of the high speed steel insert and above the tempering temperature thereof so that the rack can be heat treated in conventional fashion to develop the required hardness in the toothed insert and at the same time bond the base and insert together.