HVOF Gun

What is HVOF Gun?

HVOF Gun stands for High-Velocity Oxygen Fuel, and of its name, it is easy to understand that this thermal spray process has to do with using molten materials at a high speed on substrates. HVOF thermal spray can supply many unique coating properties for applications across different industries, and that reason the HVOF thermal spray process has become one of the most widely employed methods to create dense layers on various types of surfaces.

However, like all things in the world, there are always pros and cons to consider. In this post, you will learn about all the merits of using this process as well as the demerits that it can bring.

Working of HVOF Gun

The high-velocity oxy-fuel process was invented only 20 years ago, yet has thrust the thermal spray Gun application range into areas that were once unobtainable. In HVOF spraying, a combination of process gases, such as hydrogen, oxygen, and air, is injected into the combustion chamber of the torch at high pressure and ignited. The resulting gas velocities achieve supersonic speeds. The powder is injected into the flame and also accelerated to supersonic speed. 

Techniques used in HVOF Gun

The HVOF process is the preferred technique for spraying wear and corrosion-resistant carbides as well as Hastelloy, Triaballoy, and Inconel alloys. The coatings have high bond strengths, fine as-sprayed surface finishes, and level of oxide is low.

Worn Conveyor Screws. Conveyor screws are used in power plants to transport limestone into the boilers. The customer used a screw manufactured from carbon steel, and it needed to be replaced/repaired yearly due to the abrasion of the limestone. The thermal spray coating was to apply a thin layer of wear-resistant tungsten carbide on the shaft of the flights using the HVOF system. This repair procedure has increased the life of the screw.

Steel Blowers. The same customer as in the previous description used steel blowers that were three inches in diameter to move the corrosive gases through the ducts. However, the sulfuric acid in the gases caused the steel to corrode and unbalance the blower. The blower needed repair every six months.  Now the blower is repaired every 24 months, a 300% increase in life.

HVOF Spray Gun in India

Hvof Spray Gun Manufacturers in India at a low price. Airo Shot Blast is the Manufacturer, Supplier & Exporter of Hvof gun, Sand Blasting Machine, Shot Blasting Machine, Sand Blasting Cabinet, pressure blasting cabinet, suction blasting cabinet, grit blasting machine, thermal spray gun, zinc spray gun, thermal spray coating, arc spray gun, metalizing gun, abrasive media in Jodhpur, Rajasthan, India for sale.