Effect of slurry concentration, abrasive particle size and velocity on wear behaviour of nickel based (Colmonoy) plasma transferred arc hardfaced surface

Abstract

Wear by slurry abrasion occurs in extruders, slurry pumps and pipes carrying slurry of minerals and ores in mineral processing industries. The wear life of components used under slurry abrasion conditions is governed by process parameters, properties of abrasive particles in slurry and material properties. In this paper, the effect of operating variables such as abrasive particle size, slurry concentration, speed of rotation and slurry bath temperature on abrasive slurry wear behaviour of nickel based alloy (Colmonoy) surface produced by PTA hardfacing process has been analysed in detail. From this investigation, it is found that the wear resistance of Colmonoy hardfaced surface is two times better than the substrate (carbon steel).

Keywords:

• ABRASIVE SLURRY WEAR
• PLASMA TRANSFERRED ARC HARDFACING
• CARBON STEEL
• COLMONOY
• ANALYSIS OF VARIANCE
• DESIGN OF EXPERIMENTS