Hvof Coating Services

hvof coating services

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High-Velocity Oxygen Fuel (HVOF) coating is a thermal spray coating process used to improve or restore a component's surface properties or dimensions, thus extending equipment life by significantly increasing erosion and wear resistance, and corrosion protection.   Coating thickness is usually in the range 0.1-2 mm. Characteristic features of HVOF sprayed coatings include their low level of porosity at about 1-2vol% and low oxide content in the range 1-2wt%. The bond strength often exceeds 80MPa. HVOF is same in theory to combustion flame spraying, but it uses a different torch design that enables the flame to expand when the spray nozzle is activated. This causes a surge in acceleration, which in turn accelerates the mixture particles. When the mixture is released from the nozzle, the velocity of the mixture leads to a very thin and evenly applied coat. The final coating is well adhered, strong, and dense. Its hardness, corrosion resistance, and overall wear resistance is superior to plasma spraying. Because of the low temperature of the torch flame, which both melts the powder and propels the coating's deposition, the mixture is not suited to withstanding high temperatures. thermal spray coatingHVOF Thermal Spray Coating benefits are: Reduced oxide content Reduced solutioning of carbides Neutral or compressive stress Smoother sprayed surface True coating uniformity Tensile band strength >10,000 psi

HVOF Coating Service

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• Type: HVOF Coating Service

High Velocity Oxy Fuel (HVOF) devices are a subset of flame spray. There are two distinct differences between conventional flame spray and HVOF. HVOF utilizes confined combustion and an extended nozzle to heat and accelerate the powdered coating material. Typical HVOF devices operate at hypersonic gas velocities, i.e. greater than MACH 5. The extreme velocities provide kinetic energy which help produce coatings that are very dense and very well adhered in the as-sprayed condition.BENEFITS :- Low porosity (10000 psi) Uniform repeatability Low operating cost Higher particle velocities Stable deposition rate Controlled coating thickness Safety interlocks TYPICAL HVOF APPLICATIONS :- Hydro Power – Pelton, Seat, Runner, Francis turbine etc. Thermal Power – Boiler tube, ID Fan, Barrel etc. Aerospace – Landing gear Paper Industry – Rolls General – Shafts, Bearing, Rollers, Rings,  Valves – Ball Valve, Gate Valve etc.

HP-HVOF coating

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HP-HVOF coating, plasma coating services, carbide coating services

HVOF Spray Coating Service

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HVOF Spray Coating Service, Thermal Metal Coating Service

hvof coating services

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hvof coating services, bearing shell, Spray & Fuse, H.V. Twin Arc

hvof coating services

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hvof coating services, powder flame spray coating services, Flame Spray Guns

hvof coating services

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hvof coating services

hvof coating services

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hvof coating services, coating services, flame spray coating services