Thermal spray processes allow substrates to be coated in a protective layer, giving them protection against erosion, moisture, extreme temperatures, and friction.
This technique employs a variety of materials, such as metals, alloys, ceramics and plastics
Thermal Spray Processes
Air plasma spray uses an ignition between the nozzle and an electrode. Through this process, an arc forms, which increases in temperature with the rising pressure of the gas. As the gas ionises, plasma develops. Particles can then be injected into the jet, for spray coating.
High Velocity Oxygen Fuel – or HVOF – uses either gas fuel or liquid fuel. The ignited gases form a flame and powder is injected directly into the zone of combustion. It can then exit the flame via jet, using compressed air or invert gas to then cool the plasma stream.
Electric arc wire spray uses 2 metallic wires that will serve as the coating material. One is a negative charge and the other is a positive. When they meet at the nozzle, the opposing charges generate heat, which then forms an arc. This, in turn, begins to melt the wires into a molten substance, so that compressed air can be used in the spraying process.
Thermal Spray Coating Specialists
Specialist providers of thermal spray coating, such as https://www.poeton.co.uk/surface-treatments/thermal-metal-sprays/, can offer a variety of processes and coatings to suit your industry needs.
Thermal spraying is an invaluable process across many manufacturing and engineering sectors. A specialist provider will be happy to meet the needs of your project, whatever industry is involved.
