Title: Effect of abrasive slurry parameters on wear behaviour of cobalt-based (stellite) Plasma Transferred Arc hardfaced surface

Authors: C.S. Ramachandran, V. Balasubramanian, R. Varahamoorthy, S. Babu

Addresses: Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar – 608002, India. ' Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar – 608002, India. ' Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar – 608002, India. ' Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar – 608002, India

Abstract: 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 (ASW) behaviour of cobalt-based alloy (stellite) surface produced by Plasma Transferred Arc (PTA) hardfacing process has been analysed. Of the four variables considered in this investigation, it is found that the slurry concentration has a predominant effect on wear rate of hardfaced surface compared with other variables. Both experimental and mathematical investigations show that wear resistance of hardfaced stellite surface is three times better than that of the substrate (carbon steel).

Keywords: ASW; abrasive slurry wear; PTA; plasma transferred arc hardfacing; carbon steel; stellite; analysis of variance; ANOVA; design of experiments; DOE; abrasive particle size; slurry concentration; rotation speed; slurry bath temperature.

DOI: 10.1504/IJSURFSE.2008.022288

International Journal of Surface Science and Engineering, 2008 Vol.2 No.6, pp.502 - 519

Published online: 26 Dec 2008 *

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