Optimization of Parameters in Diamonds/Copper Based Brazing Filler Metal Powders Injection Molding Process

Optimization of parameters in the injection molding process of diamonds/copper based brazing filler metal powders was investigated by orthogonal experiments. Results indicate that the optimized combination of parameters was given as following: the mould temperature was 40 ℃; injection pressure was 12 MPa; injection temperature was 150 ℃ and injection flow rate was 20 cm3·s-1. And a molded specimen with a smooth surface, uniform microstructure could be achieved under the optimized condition. The density of molded specimens increased with increase of injection pressure, but decreased with increase of injection temperature, and the density increased first and decreased afterwards when the injection flow rate increased.