Thermal spray began with metallizing, invented in 1910 and still widely used today. A single wire is entered into an oxy fuel flame creating a molten stream of metal where compressed air then propels it onto the work surface forming a coating.
Energy Source & Consumption | Oxy Fuel 2500 Scfh | |
Spraying Factors | ||
| Spray Rates | 5 to 15 lbs/hour | |
| Deposit Efficiencies | 65% to 75% | |
| Deposit Per Pass | .002” to .005” | |
| Particle Velocities | 600 fps | |
Coating Properties | ||
| Materials | Wire drawn materials, base metals, carbon & stainless steels, some alloy materials | |
| Coating Finishing Processes | Machine, Mill or Grind | |
| Hardness Range of Materials/Coatings | Rc 25-50 | |
| Typical Oxide Content | 5% to 10% | |
| Typical Porosity Levels | 5% to 10% | |
| Erosion Resistance Rating | Fair to Good | |
| Abrasive Wear Resistance Rating | Fair to Good | |
| Thermal Cycling & Thermal Shock Capabilities | Fair to Good | |
| Co-efficient of Thermal Expansion & Contraction | Fair to Good | |
| Corrosion/Oxidation Resistance Rating | Fair | |