Characteristics of Electrolytic Copper Powder Compaction by Differential Speed Rolling

Abstract

Differential speed rolling of electrolytic copper powder is conducted under conditions of carefully controlled powder feed volume. Roll speed ratios are changed in the range of 1.00 to 1.50 by choosing different combinations of roll diameters. The rolling load increases with an increase in the ratio of the powder feed volume to the strip speed. The strip thickness increases with an increase in the rolling load for each roll gap, regardless of the roll speed ratio. The relative density of the strip is greater than that achieved using conventional powder rolling.