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

Do you want to spray WCCoCr at half the cost of HVOF?

Or prefer to make next level coatings? Choose here.

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Kermetico HVAF and HVOF Thermal  Spray Coating Equipment and Technology

We design and manufacture HVAF and HVOF thermal spray coating equipment and run the equipment we make in our shop in California, USA. We spray with our equipment and learn how to improve it from the various jobs we do.  Everything we have in our product line has evolved from our spray shop work. Our spray shop effort serves as 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 different high velocity 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 outstanding wear and cavitation resistance of our impermeable, corrosion-resistant layers.

This high quality comes with the additional benefit of lower coating cost due to the efficient use of Kermetico systems’ energy which results in high spray rates and deposits per pass four to eight times higher than conventional HVOF.
We manufacture thermal spray equipment combining the advantages of both technologies: high quality + low cost of HVAF and compliance with HVOF standards.

Kermetico AK Multi-Purpose HVAF Equipment

Kermetico AK Multi-Purpose HVAF Equipment

Our HVAF and HVOF Thermal Spray Systems

Convertible HVOF and HVAF equipment:

  • C7 – an HVAF/HVOF gun for 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 surfaces
  • AK-ID – an 80 mm (3.15”) and larger internal diameter spray gun
  • AK-IDR – a rotating ID gun to spray 4” (100 mm) and larger bores
  • AK-HH – a handheld gun for on-site coating

Specialized equipment:

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

Additional equipment:

 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 technological windows in thermal spray, as well as the trends in equipment and 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 carbide overlays are superior to HVOF rivals regarding wear resistance, corrosion protection and production cost. The high speed of the in-flight particles (higher than 1,000 m/s | 3,300 ft./sec.) in our process enables the production of very dense coatings with high bond strength.

These coatings are gas-tight and form an impermeable barrier between an environment and a base material.

An Impermeable Kermetico HVAF Tungsten Carbide Coating

An Impermeable Kermetico HVAF WCCoCr Coating

Moreover, the low spraying temperature (1,960-2,010°C | 3,560-3650°F depending on fuel gas) and gentle particle heating lead to minimal feedstock phase transformation and almost nonexistent elemental depletion/decomposition of the in-flight particle.

A Micrograph of the HVAF C6 system U-mode Using Propylene Gas to Spray a Tungsten Carbide Coating: no Gas Permeability at 300 PSI, Hardness 1,650 HV300

Phase Diagram of WCCoCr Powder and an HVAF-Sprayed Coating

Furthermore, the replacement of pure oxygen used in HVOF processes with air in our HVAF process significantly reduces the oxide content in HVAF coatings, which is desirable for coating quality.

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)

Kermetico HVAF & HVOF equipment produces WC-based coatings with the highest fracture toughness, substantially exceeding known samples.

Since the primary mechanism of wear of tungsten carbide coatings is attributed to the material brittleness, Kermetico’s HVAF overlay exhibits better wear resistance than pure HVOF versions.

Kermetico, Inc. – Design and Manufacture of Thermal Spray Equipment Since 2006

We produce complete high velocity air and oxy fuel systems. Since our incorporation in 2006, we have installed more than 60 systems in the USA, Europe, Japan, and China.

Some of the systems are at work in Universities and National Labs, but most of them are used in production thermal spray shops.

We equip our systems with different spray guns; they are reliable and technologically efficient.

And they are not expensive.

For example, our HVAF system with the AK6 gun pays back your investment spraying a second metric ton of tungsten carbide.

We proudly design and produce our high velocity thermal spray equipment in the USA and install it all over the world.

You are welcome to visit our R&D center in Benicia to meet our designers and see our equipment in action.

Thermal Spray Coating Services in California

We provide HVAF and HVOF thermal spray coating services in California, USA.

We efficiently deposit wear resistant and corrosion resistant coatings for varied applications.

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