Product Code: ICAL06_205

Repair of Cemented Carbide Tools Using Laser Cladding
Authors:
Christ Prakash Paul, University of Waterloo; Waterloo ON Canada
Christ Prakash Paul, University of Waterloo; Waterloo ON Canada
Ehsan Toyserkani, University of Waterloo; Waterloo ON Canada
Seyed Hamidreja Alemohammad, University of Waterloo; Waterloo ON Canada
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Stephen Corbin, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2006

This paper reports the laser cladding of various compositions of the Tungsten carbide (WC) and Cobalt (Co) for tool repair and refurbishing applications. The engineered compositions of the WC and Co were selected to address the issues, such as - partial melting of WC particles in the Co matrix, suppression the formation of hard brittle ternary eutectic phases to ensure crack-free and pore-free deposition.
The initial experiments with a pulsed Nd:YAG laser indicated the promising trend. The process parameters are being optimized to obtain desired mechanical properties (like- hardness, wear resistance, toughness etc.) with sound metallurgical bonding. The paper describes the process and material characterization through various analyses.