Powdered material is injected into an oxy fuel gas flame. It is then melted and propelled onto the work surface to form a coating. The flame spray process allows for a wide range of coating materials. Nickel Chrome Silicon Boron Spray and Fuse as well as Nickel Graphite are materials often selected for this process.
Energy Source & Consumption | Oxy Fuel 2500 Scfh | |
Spraying Factors | ||
| Spray Rates | 5 to 10 lbs/hour | |
| Deposit Efficiencies | 65% | |
| Deposit Per Pass | .0005” to .002” | |
| Particle Velocities | 100 fps | |
Coating Properties | ||
| Materials | Nickel Chrome Silicon Borons, Nickel Graphite, Carbon Steels, Stainless Steels and Bronze | |
| Coating Finishing Processes | Machine, Mill or Grind | |
| Hardness Range of Materials/Coatings | Rc 20-60 | |
| Typical Oxide Content | 5% to 10% | |
| Typical Porosity Levels | 5% to 10% | |
| Erosion Resistance Rating | Fair | |
| Abrasive Wear Resistance Rating | Fair | |
| Thermal Cycling & Thermal Shock Capabilities | Good | |
| Co-efficient of Thermal Expansion & Contraction | Good | |
| Corrosion/Oxidation Resistance Rating | Fair | |