Weld Metal Overlay

Metal Arc Welding

Bossong Engineering’s Metal Arc Welding process for hardfacing is applied robotically using our purpose built robots. We have acquired all the benefits of robotic technology to hardfacing applications for industries such as mineral processing, petrochemical, mining and others. A MIG welding process is applied with specially selected alloy wires for a combination of abrasion, wear, impact or corrosion resistance characteristics.

Weld metal overlays used on ground engagement tools are predominantly nickel based alloys with up to 70% fused tungsten carbide. This material offers extreme abrasion and impact resistance. Where the combination of extreme abrasion and impact is not presentMetal Arc Welding we utilise chrome and titanium carbide based overlays selected to meet the specific application.

Pipes and pipe elbows are hard faced using welding procedures specifically developed to apply fully fused overlays of uniform thickness and surface finish. Overlay materials are selected to provide protection against the particular combination of abrasion and corrosion present. Carbon steel pipes and fittings are commonly overlaid with various grades of stainless steel, Hastaloy and Inco materials for the petroleum sector. Chrome, Tungsten, Vanadium and a range of other metal carbides are used for the mining industry.

Robots are used to overlay an enormous range of pipes and mining, crushing, screening and conveying equipment.


The following are typical of components hardfaced using robotic technology.

  • Drill Subs and Stabilisers
  • Coal Pulveriser Components
  • Crusher Rollers
  • Centrifuge Components
  • Tank Agitator Blades
  • Organic Fibre Pulp and Chip Grinders
  • Sugar Cane Hammers
  • Grizzly Bars
  • Screens
  • Hoppers, Chutes and Liners
  • Wear Plates
  • Clay Augers
  • Pug Mill Hammers.
  • Railway Ballast Tamping Tines
  • Excavator, Drag Line and Reclaimer Buckets
  • Plough and Trenching Tines
  • Crawler Track Wheels and Pads
  • Grader and Scraper Blades