Thermal spraying is a coating process in which a material (usually in the form of powder, wire, or rod) is heated to a molten or semi-molten state and then propelled at high speed onto a surface to form a protective or functional coating.
It’s widely used to improve surface properties such as wear resistance, corrosion resistance, thermal insulation, or electrical conductivity.
How it works:
- Feedstock preparation: Coating material is supplied as powder, wire, or rod.
- Heating: The material is melted or softened using a high-energy heat source:
- Combustion flame (flame spraying)
- Electric arc (arc spraying)
- High-velocity combustion (HVOF – High Velocity Oxy-Fuel spraying)
- Deposition: Molten/semi-molten particles are accelerated toward the substrate.
- Solidification: On impact, the particles flatten, cool rapidly, and build up layer by layer into a coating.
Applications:
- Aerospace: turbine blades, engine parts (heat & wear resistance)
- Automotive: piston rings, crankshafts
- Industrial: corrosion protection for pipelines, boilers, and pumps
For more information on thermal spraying services, visit our technical capabilities page.
