HVOF (High Velocity Oxygen Fuel)
Stellite (Grade 6 and Grade 12) and NiCrBrSi (Nickel base) are applied using the HVOF (High Velocity Oxygen Fuel) process to parts requiring exceptional resistance to corrosion and high temperatures. This process is particularly suitable for sectors such as automotive, mechanical engineering, energy, hydraulics, and many other industries where increased performance in extreme conditions is essential.
Benefits
– Anti-abrasion: Effective protection against mechanical wear and abrasion.
– High temperature resistance: Withstands high temperatures without damaging the material.
– Hard coating: Excellent impact and wear resistance thanks to the material’s hardness.
– Thick coatings: Allows for very thick coatings for highly stressed parts.
Features
– High temperature resistance: The coating maintains its properties at temperatures between 540°C and 850°C, depending on the composition of the powders used.
– Corrosion resistance: Provides excellent corrosion protection, even in harsh environments.
– Porosity: Less than 1%, ensuring a smooth and uniform surface.
– Thickness: Varies from 0.1 to 1 mm, depending on the specific needs of the application.
– Hardness: Can reach up to 60 HRc, depending on the powder composition.
– Surface finish: Rough surface or Ra < 0.2 microns, providing a fine and precise finish.
Typical application
– Hot Cutting Blades
– Sleeves and Knives
– High-Temperature Valves
– Automotive Valves
– Valve Seats
– Punches
– Pump Pistons
– Shafts
– Screws Extrusion
– Wear Rings
– Molds
HVOF applied to these materials results in coatings that are particularly effective against wear, corrosion, and high temperatures. This process is ideal for industrial applications where parts must withstand extreme working conditions while maintaining extended service life and optimized performance.