HVOF – High-Velocity Oxygen Fuel
High-velocity oxygen fuel (HVOF) is a combustion process that creates a pressurized gas stream where an optimized powder feedstock is injected into and accelerated up to supersonic velocities. Maximum process temperatures are considerably lower than the traditional plasma spray process which therefore offers distinct advantages for temperature sensitive materials and, combined with the high velocities, generates coatings that offer superior mechanical properties.
HVLF: Utilizes a liquid fuel type (kerosene, Jet A1, ethanol) combusted together with oxygen in a chambered torch design. This creates high pressure conditions that, once expanded through a laval nozzle ensures high mach gas velocities.
HVGF: Utilizes gas fuel types (hydrogen, propane, methane, natural gas) that also combust with oxygen however torch designs are somewhat different than their liquid fueled counterparts. Gas fueled torches typically do not use a traditional chambered design which allows for axial powder injection.
HVOF Controller and Torch Equipment Arzell, Inc. has integrated
MULTUS LF & GF, JP, JP-5, JP-8, JP5000, JP5120, JP8000, JP8200, DiamondJet, JetKote II, JetKote III, WokaJet, WokaStar, DJ2600, DJ2700, eGun, Nova-A, NOVA-D, MP-50, HV-50, DJC, DJCE, DJFW
HVAF – High-Velocity Air Fuel
High-velocity air fuel (HVAF) is a combustion process, similar to HVOF however, the process utilizes compressed air rather than oxygen as a reactant to combust the fuel. Maximum process temperatures are slightly lower than the HVOF process and the lower oxygen contents typically result in coatings with lower oxidation.
HVAF Controller and Torch Equipment Arzell, Inc. has integrated
M2, M3, C6, AK7, AK6, AK5, i5, i7, C01, Ultracoat
Plasma Spray
Plasma is an electrical process that ionizes gas to increase its temperature significantly to create a highly controlled plasma jet used to melt and accelerate a feedstock. Temperatures achieved are, by far, the highest of all the thermal spray processes and it is therefore the most versatile of all the thermal spray processes. The high temperatures allow for high melting point materials such as refractories and ceramics to be sprayed efficiently and effectively. Our extensive experience in torch design and process development combined with what we’ve learned with our customer partners, has put us at the forefront of plasma spray development. Our patented C+ plasma platform is the pinnacle of DC plasma generation.
Cascade Plasma Spray
The latest evolution in thermal spray, Arzell’s C+ cascade plasma technology offers the most versatile and scalable thermal spray device on the market. The process can be configured to run in the highest plasma enthalpy regimes possible within thermal spray – which requires a robust torch design that’s capable of running very aggressive power regimes and gas combinations, when needed. This offers unmatched process efficiencies for high temperature applications such as segmented thermal barrier coatings. The system is so unique that it can also be configured to operate in high velocity regimes as well, resulting in HVOF typical coating properties, with better chemical properties. Furthermore, it can do all this without the need for combustible gases or oxygen, resulting in the safest thermal spray device in the market.
Plasma Controller and Torch Equipment Arzell, Inc. has integrated
C+, CV+, MULTUS C & NC, 3710, 6600XL, 7700AP, 7M, 9M, MultiCoat, UniCoat, AT-3000, AP-50, SG-100, 2086A, 3MB, 9M, F1, F4, F4XL, Sinplex, Triplex
Arc Spray – Twin Wire Arc Spray
Arc Spray is an electrical process that utilizes wires as electrodes which are melted on contact and then atomized to create metallic droplets. The process offers the lowest operating costs and highest efficiencies but is restricted to conductive alloys as feedstock materials. We are proud to lead the industry into new territory with pulsed DC power supply technology. This is changing the game in terms of coating efficiency and quality.
Arc Equipment Arzell, Inc. has integrated
Elmatech LDS MIDI 400, MB, IB, HB, AT-400, 8830, 8835, 9910, 9935, 9985, BP-400, AWS-400, Flexi Arc, SmartArc, ValuArc
Combustion Spray
The combustion spraying process involves gaseous fuel and oxygen to apply metallic and ceramic coatings. The combustion process is lower energy and can therefore be used on surfaces with lower melting points.
Combustion Equipment Arzell, Inc. has integrated
6C, 6P, 6P-II, 5P, 16e, J3, TD-3000
Cold Spray
Cold spray is a deposition process in which powdered materials are applied at supersonic speeds. The particle velocity can be adjusted for intensity and trajectory.
Powder Feeding
Material delivery is almost a science in and of itself. Getting the powder to the torch reliably is critical for applying repeatable and consistent coatings. This is often compounded by differing powder properties such as density, morphology and size range. Our fundamental understanding of the science helps determine the best feeder type for the application.
Powder feeder equipment Arzell, Inc. has integrated
G10, G4, V1, AT-1200, 1264, 1264i, 1264WL, Twin 10/120, 9MP, 9MPDJ, 5MPE, 5MP-HP, FST-10, FST-20
General thermal spray information
Materials typically sprayed
Various metallic and ceramic alloy combinations of Ni, Co, Cr, W, C, Al, B, Si, Fe, Y, Zr, Li, Si, La, Ti
Gases typically used
Oxygen, Propylene, Propane, Natural gas, Kerosene, Nitrogen, Argon, Helium, Hydrogen, Compressed air
Items that can be coated
Mud rotors, Screws, Rolls, Shafts, Rocket nozzles, Gates/Seats, Ball Valves, Buckets Blades, Vanes, Transition Pieces/Ducts, Combustion liners, Bearings