Kermetico HVAF and HVOF thermal spray equipment
Kermetico HVOF equipment

Kermetico

 

Convertible HVOF+HVAF Equipment

HVOF system spraying 550 g/min in HVOF mode,

1,600 HV300 WC-10Co-4Cr in HVAF Ultra mode

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Kermatico HVAF Equipment

Kermetico

 

AK Multi-Purpose HVAF Equipment

A range of spray guns from 80 mm ID

To 73 lbs./hr. HVAF AK7

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Specialized HVAF Equipment

Kermetico

 

HVAF Specialized systems

Guns designed to spray bulk-like non-oxidized Al, Ag, Au, Cu, Sn, Ti, Zn or different metals

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HVOF vs. HVAF

Kermetico

 

HVAF vs. HVOF

Would you like spraying WCCoCr at half the cost of conventional HVOF?

Or prefer to make the next level coatings? Choose here.

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Kermetico HVAF and HVOF Thermal  Spray Coating Equipment and Technology

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

Kermetico, Inc. manufactures HVAF and HVOF systems that are capable of operating a range of high velocity spray guns for the efficient deposition of cemented carbide and metal coatings.

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 Equipment, Thermal Spray Coating HVOF Systems

Kermetico AK Multi-Purpose HVAF Equipment

Our HVAF and HVOF Thermal Spray Systems

Convertible HVAF and HVOF Equipment

  • C7 – an HVAF/HVOF system for spraying large parts
  • C6 – a general purpose HVAF-HVOF gun
  • CID – an HVAF&HVOF gun to spray internal diameters 80 mm (3.15″) and larger

Multi-Purpose HVAF AK Systems, With a Variety of Spray Guns

  • AK7 – a high-power gun for the thermal spray of large parts
  • AK6 – a gun to spray tungsten and chromium carbide onto a balanced mix of parts
  • AK5 – a compact gun to spray smaller parts, thin walls and complex geometries
  • HVAF Compact – a compact gun to spray internal diameters/bores 200 mm (8″) and larger
  • AK-ID – an 80 mm (3.15”) and larger internal diameter/bore spray gun
  • AK-IDR – a rotating ID gun to spray 4” (100 mm) and larger internal diameters/bores
  • AK-HH – a handheld gun for on-site coating

Specialized Equipment

  • SL – a specialized gun for spraying low melting point metals, like aluminum or copper
  • SP – a dedicated gun for the most efficient precious metals’ deposition
  • STi – a specialized gun for the deposition of titanium and Ti-alloy coatings

Auxiliary Equipment

  • Grit Feeder for the grit blast preparation of parts to reduce overall application cost and time
  • A Gas Permeability Tester for an instant and quantifiable check of a coating’s through porosity
  • A Powder De-Duster to remove unwanted fine particles from a metallic powder

 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, HVOF, Plasma, Detonation, Cold Spray Particle Temperature vs. Velocity Process Map

Kermetico HVAF, HVOF, Plasma, Detonation, Cold Spray Particle Temperature vs. Velocity

Kermetico HVAF Coating Features

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.

An Impermeable Kermetico HVAF Tungsten Carbide Coating

An Impermeable Kermetico HVAF WCCoCr Coating

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.

A Phase Analysis of WCCoCr Powder and an HVAF-Sprayed Coating

A Phase Analysis of WCCoCr Powder (Black) and an HVAF-Sprayed Coating (Red)

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.

The Main Features of Our Corrosion and Wear Resistant Tungsten Carbide Coatings

WC-10Co-4Cr Coating FeaturesA Typical HVOFKermetico HVAF System Modes
EconomyBalancedUltra
Deposition efficiency, %40-5560-7048-5836-42
Hardness, HV3001,050-1,2501,050-1,2501,250-1,3501,350-1,600+
Young’s Modulus E, GPa300400450450
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.

Kermetico Inc. – Innovating and Commercializing HVAF Since 2006

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.

Thermal Spray Coating Services in California

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:

You are welcome to visit our R&D center in Benicia, CA to meet our team and see our equipment in operation.

Kermetico HVOF & HVAF Equipment and Coatings
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Kermetico HVOF & HVAF Equipment and Coatings