Machining of Sintered Tungsten Carbide for Die and Mold

Abstract

In order to pursue possibility to machine sintered Tungsten Carbide by milling, series of ball end milling experiments are carried out with use of ball end mills made of sintered PCD and sintered CBN to machine flat inclined surface of sintered Tungsten Carbide. The experimental results show that the sintered Tungsten Carbide can well be machined by end milling. The ball end milling is also applied to finish rounding of the edges of the gear teeth. The maximum surface roughness of the finished gear teeth obtained is 1.1μm.