Wear characteristics of sub-zero chilled cast iron

Abstract

This paper presents the results obtained and the deductions made from a series of wear tests involving sub-zero chilled (using liquid nitrogen) cast iron containing 1.5% Cu, and chromium contents ranging from 0.0% to 0.2%. By using copper chills of different thicknesses, the effect of wear resistance of varying the chill rate was also examined. The wear tests were carried out using a modified pin-on-disk method. It was found that wear resistance is highly dependent on the chromium content of the material, as well as the rate of chill. Moreover, wear resistance also increases monotonically with hardness and tensile strength.