Optimization of a weld overlay procedure using Inconel 686 for corrosion-resistance in mineral processing infrastructure

The mining sector is vital to the Canadian economy, contributing $71B towards the GDP and providing 392,000 jobs. Canada is the 4th and 8th largest global producer of refined zinc and lead, respectively, and as one of the world’s largest zinc and lead refining facilities, Teck Resources’ operation in Trail, BC, is an important part of our economy. A critical aspect for the integrity of mining infrastructure is the use of materials that can withstand the harsh conditions associated with mineral processing (i.e., high temperatures, corrosive chemicals). Layers of nickel superalloys have previously been used on the surface of mining equipment for this purpose. In this project, we will investigate the effect of different weld settings on the properties of these nickel superalloy ‘weld overlays’. We will study the weld overlay thickness and surface roughness, the weld overlay microstructure, and the residual stress after welding. Our research will result in tools (e.g., models) that can be used by industry practitioners such as Teck to predict the properties and performance of nickel superalloys weld overlays during the repair of existing equipment or in the design of new equipment.

Faculty Supervisor:

Dimitry Sediako;Michael Benoit;Michael Benoit

Student:

Partner:

Teck Resources Ltd

Discipline:

Engineering

Sector:

Manufacturing; Mining

University:

The University of British Columbia - Okanagan; University of Waterloo

Program: