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Further Information

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COATEC GmbH
Breitenbacher Stra├če 40
36381 Schl├╝chtern
Germany

Phone: +49(0) 6661 9678-0
Fax: +49(0) 6661 9678-90
info@coatec.de
www.coatec.de

HVOF High Velocity Oxygen Fuel

Since its implementation in the 1980s, High Velocity Oxygen Fuel (HVOF) has gained in importance. Compared to flame spraying and plasma spraying, the powder is accelerated significantly faster and heated up less due to the short dwell time in the flame. A distinction is made between HVOF gas and HVOF liquid fuel fired burners.

The HVOF gas burner can operate with different combustible gases such as propane, acetylene, ethene and various mixed gases.

When using HVOF burners, combustion chamber pressures of 10 bar and more are developed during the combustion of liquid fuel in combination with oxygen, which generates a flame velocity of more than 2000 m/s. This leads to approx. doubling of the kinetic energy of the system compared to the gas fired system.

In terms of porosity, bond strength and hardness, high quality coatings can be achieved. 

Another advantage is that coatings which are produced with this process exhibit compressive stresses, whereby coating thicknesses of several millimeters are feasible.