Flame Spraying
A reliable and versatile process for the deposition of metal coatings, ideal for anti-corrosion protection, restoration and technical applications.
How flame spraying works
In this process the wire is deposited in the form of molten or semi-molten metal on a support previously cleaned. The necessary heat is generated by the combustion of gases such as acetylene or propane, which melt the material and transform it into millions of atomized metal particles.
The particles are projected by a jet of compressed air at a speed of approx 40 m/s. Once you reach the substrate, at a temperature of approximately 150°C, flatten, they adhere to the surface and conform to its micro-irregularities.
The impact causes the deformation and immediate solidification of the particles, creating a coating composed of millions of overlapping deposits. The final thickness depends on the number of passes performed during the treatment.
Main characteristics of the process
- Deposition of molten or semi-molten metal on a clean support
- Atomization of wire into millions of particles
- Projection via compressed air
- Mechanical adhesion on surface irregularities
- Rapid deformation and solidification of the material
- Average particle size: 10–20 micron
- Coating thickness variable based on the number of passes
Fields of use
Anti-corrosion protection
Treatments to increase the resistance of metal products to corrosive agents.
Restoration of worn parts
Piston applications, cylinder compressors, crankshafts and other components subject to wear.
Anti-seize coatings
For lubricated couplings, forcelle, changes, timing rings and similar mechanical components.
Sliding components
Production and coating of bushings, bearings and technical mating surfaces.
Most frequently used metals
The variety of materials that can be used makes flame spraying a particularly flexible technology for industrial protection applications, restoration and functional improvement of surfaces.