RESISTANCE TO EROSIVE WEAR BY COPPER ALLOY MOLD COMPONENTS

摘要

Injection molds are increasingly making use of high strength, high thermal conductivity copper alloy mold components to reduce cycle time and improve dimensional accuracy. Molders are focused on the durability of these components. This paper is the first of a two-part discussion of erosive wear. Performance of standard copper alloys and tool steels was compared. Wear measurements were taken on a flat surface across from the gate, on the core side of the mold. Samples were run without release or lubrication aides, using 33% glass-filled nylon. Uncoated copper alloys were found to have comparable performance to that of pre-hardened tool steel.