Consistently high HVAF coating quality allows us to spray carbide and metal coatings with less effort and fewer QC issues. Find out why.
Find out how you can use our equipment to 3D print copper, aluminum and their alloys.
HVOF system spraying 550 g/min in HVOF mode,
1,600 HV300 WC-10Co-4Cr in HVAF Ultra modeMore
A range of spray guns from 80 mm ID
To 73 lbs./hr. HVAF AK7More
Guns designed to spray bulk-like non-oxidized Al, Ag, Au, Cu, Sn, Ti, Zn or different metalsMore
Would you like spraying WCCoCr at half the cost of conventional HVOF?
Or prefer to make the next level coatings? Choose here.More
We design, manufacture and optimize HVAF and HVOF thermal spray coating equipment and utilize this emerging technology in our spray shop to provide coating services in Benicia, California, USA. We spray real-world jobs, and use this experience to constantly improve our systems to more effectively and efficiently produce coatings to meet our customers most stringent requirements. Everything we have in our product line has evolved or in some way been improved by our spray work, this coating service is our real-world R&D lab.
Gas Fuel Thermal Spray Systems
The coatings deposited with our Kermetico systems exhibit high density and hardness, combined with excellent ductility, which results in best in market wear and cavitation resistance of our impermeable, corrosion-resistant layers.
This high quality comes with the additional benefit of lower cost per unit of coating due to the efficient use of energy which is unique to Kermetico, and which results in deposition rates four to eight times higher than conventional HVOF.
The unique combination of high quality and low coating cost also benefits from equipment that is user friendly, and proven and improved on a daily basis in our northern California spray shop.
Kermetico HVAF Technology in a Family of Thermal Spray Processes
The key characteristics of each process are spray particle temperature and velocity, as achieved during coating application.
Particles of different materials and various sizes are heated and accelerated very differently even using the same method or even different spray guns within the same process.
It is useful to understand the various technological windows in thermal spray, as well as the trends in equipment and ongoing technology development.
Kermetico HVAF tungsten carbide coatings are generally superior to HVOF regarding wear/erosion/cavitation resistance, corrosion protection and production cost. The higher particle velocities (as compares to HVOF) ensure the densest possible coatings with high bond strength. Where necessary, gas-tight coatings can be easily applied, which form an impermeable barrier protecting components in highly corrosive and aggressive environments.
The lower flame temperature (~2,000°C/3,600°F vs ~2,600°C/4,700°F for HVOF depending on fuel type) is less destructive of the powder/feedstock, allowing for the best possible transfer of powder/material properties to the applied coating.
Furthermore, utilizing compressed air (@~21% Oxygen) instead of the pure oxygen used in HVOF processes, significantly reduces the oxide content in HVAF coatings, which is desirable for optimum coating quality/properties.
|WC-10Co-4Cr Coating Features||A Typical HVOF||Kermetico HVAF System Modes|
|Deposition efficiency, %||40-55||60-70||48-58||36-42|
|Young’s Modulus E, GPa||300||400||450||450|
|Apparent metallographic porosity||<0.8||<0.8||<0.5||<0.3|
|Bond strength, MPa (PSI)||80+ (12,000+)|
|Range of as-sprayed roughness, µm (µ in.)||3.5-4.5 (150-180)||1-3.2 (40-130)|
Exploiting all of these benefits, Kermetico equipment produces WC based coatings with the highest fracture toughness, substantially better than any HVOF process. Since the primary wear mechanism of WC based coatings is attributed to the inherent brittleness of the material, Kermetico’s HVAF overlay exhibits better wear resistance than HVOF technology.
We produce complete high velocity air and oxy fuel thermal spray systems. Since our incorporation in 2006, we have installed more than 60 of these systems in every major industrial market globally.
While some of these systems are at work in Universities and National Labs, where the uniquely superior coating properties are being explored, most of the systems are utilized daily in established production thermal spray shops.
We equip our systems with a tailored range of spray guns to meet a broad range of industry requirements; all engineered to be safe, reliable and technologically efficient.
Kermetico HVAF systems provide industry leading applied coating cost, giving the best Return On Investment in the industry.
We proudly design, engineer, build and test all our thermal spray equipment in the USA and install it across the planet. Our customers are our best advertisement, and we work closely with them to support their day-to-day needs, along with providing ongoing updates as we continuously improve and optimize our hardware, and the coatings it produces.
We provide HVAF and HVOF thermal spray coating services in Northern California, USA. We efficiently deposit wear and corrosion resistant coatings for a broad range of applications and industries, including: