HVOF-spritzstrahl, Hochgeschwindigkeitsflammspritzen mit Aluminiumtitanoxid Al2O3TiO2
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Berolina Metallspritztechnik Wesnigk GmbH, Pappelhain 30-31, 15378 Hennickendorf

HVOF (High Velocity Oxygen Fuel)

The Hvof (high velocity oxygen fuel) spraying is carried out by the combustion of a fuel oxygen mixture under high pressure within the combustion chamber. The gas mixture through a downstream expansion nozzle is then accelerated to supersonic speeds. The most powdery materials are injected into this gas Jet and accelerated. This hochkinetsche technique can be dense layers (porosity < 2%) with excellent.

HVOF (High Velocity Oxygen Fuel) - Shock Diamonds
Here you can see very well the Shock Diamonds in the spray jet

Frequently carbide and metallic wear-resistant coatings are applied by HVOF process . Through an adapted process guidance is a moderate heat input into the base material and a metallurgical change ( Decarburization ) of the coating material can be largely avoided.


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