In an automated facility at McCoy Coatings & Hydraulics, Plasma Transferred Arc (PTA) hard-facing is applied to various components from a variety of industries. The full scope of advantage of this hard-facing method is still being realized. Some key points about this process include:
- PTA is a high energy, low heat, inert gas welding process.
- This process provides minimal dilution and high resistance to chipping because of its dense metallurgical structure, free of voids, oxide films, and discontinuities.
- Used on parts subject to corrosion, thermal shock, severe abrasion, slurry erosion, or extreme impact forces to increase component life.
Common applications of PTA include:
- Downhole drilling tools
- High wear piping components / slurry transport
- Ground engagement equipment for the oil sands / mining industries
- Breaker screens
- Valve components
- Areas where traditional wire based overlays such as chromium carbide are not providing significant wear-life
Common powder materials used in the PTA process:
- Tungsten Carbide
- High Nickel Alloys
- Chrome Carbide
- Iron based compositions
- Nonmagnetic powder compositions
- Various other powder compositions – including Titanium – are being tested to meet specific customer needs
We have recently added new equipment to this division to expand our capacities, and better serve our customers needs.
PTA – ID, OD, and flat plate applications
- ID – 2 ½ “ to 4” in diameter, up to 48” in length
- ID – 4” up to 12”, up to 96” in length
- ID – 12” and larger up to 12’ in length
- OD – 3” to 30” diameter, up to 36’ in length, though additional application capacities are still being realized.
- Table-top units for large flat applications.
Certifications & Memberships
ISO 14001 Compliant