Hvof Gun also is known as High Velocity Oxygen Fuel Spraying is a process of flame spray gun with high velocity. This method was introduced long back by Witfield and Browning in 1980 with the help of rocket engine technique. Various fuel gases such as propane, hydrogen, propylene, also kerosene are mixed with oxygen to undertake HVOF Coating process & as the velocity is heightened by-products are thrown outward through an orifice.
Powders that are to be scattered through HVOF gun are directly infiltrated into expanding hot gases where they are speed up, pushed forward, & heated onto the surface to form a HVOF coating.
In HVOF gun also thermal spray gun are used, and fuel can be gas like hydrogen, methane, propane, acetylene, & natural gases. & fluid fuel like kerosene. HVOF gun coating is very wide coating caused by heightened acceleration in compression alternately of pressure & also producing excellent adhesive resilience.
In the HVOF coating process, widely employed coating materials are Nickel, Cobalt, & Iron-based alloys, Carbides, & cermet. For very wide coating carbide is employed in excess of 6mm.
Hvof Spray Gun Process
High Velocity Oxygen Fuel or HVOF spray coating is a Hvof thermal spray approach inside fuel & oxygen are intermixed, equipped towards the inside of a detonation area, & gun. Gas delivered in combustion container encloses a very lofty temperature also pressure & is emitted via a nozzle at supersonic velocities. The powder feeder is insinuated towards the inside of heightened-acceleration gas streamlet & moved to substrate surface to be coated. Outcome is an HVOF coating process a certain contains lowly porosity & heightened adhesive soundness to substrate substance, whatever delivers it with have on and/or erosion resistance.
In the HVOF coating process, heightened speed of bit delivers kinetic fuel, which is additional meaningful than temperature. One of the advantages of HVOF coating process is that very thick & tough coatings can be delivered at moderately low temperatures.
Applications of Hvof Gun
HVOF is most suitable for:
- Used for corrosion and wear-resistant coatings
- Iron-based alloys
- Nickel and Chrome carbides
- Superalloy ranges
- Titanium, tungsten, Monel, Hastelloy, Inconel
Benefits of Hvof Gun
- Improved coating quality
- Coatings are with higher density
- Economical
- Strong coating with better wear resistance
- The Hvof coating process is cool
- Oxide content is less because of short in-flight exposure time
- Smoother surface
HVOF Spray Gun Price in India
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