HVOF Gun

HVOF Gun (High-Velocity Oxy-Fuel Gun)  devices are a subset of the flame spray gun. There are two distinctions between HVOF and ordinary flame spray. To heat and activate powdered coating material, the HVOF Gun uses limited combustion and a broad nozzle. HVOF devices are characterized by operating at hypersonic gas velocities, which are larger than MACH 5. The ultimate velocities afford kinetic energy which helps provide coatings that are extremely dense and very well adhered to in the as-sprayed condition. The coating procedure with an HVOF Gun required a very high velocity. Before impacting on the substrate, this high velocity is utilized to drive the particles to supersonic speeds. High combustion pressure and great gas and particle velocity result in high coating quality in the HVOF spray process. There are two types of HVOF guns driven by fuel type like gaseous or liquid in nature.

HVOF Spray Gun

The HVOF (High Velocity Oxygen Fuel spray gun) Thermal Spray gun process is similar to the flame powder spray gun process, with the exception that it was developed to produce exceptionally high spray velocity. There are a variety of HVOF guns available, each with its own method of achieving high velocity spraying. A high-pressure water-cooled HVOF flame chamber with a long nozzle is one way. Fuel (kerosene, acetylene, propylene, and hydrogen) and oxygen are supplied into the chamber, where combustion produces a hot, high-pressure flame that is propelled down a nozzle at a high velocity. The powder is axially fed at high pressure from the nozzle's center.

Specification of HVOF Spray Gun

After a thorough review of the literature, two types of hvof thermal spray coating powders, (1) WC-12CO and (2) Cr3C2NiCr, were chosen for the detonation Spray Coating Process and the High-Velocity Oxy-Fuel Spray Coating Process. The indicated coatings have good bond strength and wear resistance, according to research publications.

Tungsten Carbide Cobalt  (WC-12CO): Tungsten Carbide Cobalt powder creates exceptionally dense and homogenous coatings with excellent abrasive wear resistance when sprayed using the Detonation Spray technique. H C Starck, Germany, sells the powder under the Amperit 584 brand name. The powder is sintered and agglomerated, with a particle size of -45+20 microns.

Chromium Carbide-Nickel Chromium Powder (Cr3C2NiCr): When sprayed utilizing the Detonation Spray technique, Chromium Carbide and Nickel Chromium powder generate coatings that are extremely hard, dense, and well-bonded. For resistance to fretting wear and abrasive particle oxidation, a Chromium Carbide and Nickel Chromium coating is advised. The powder is sintered and agglomerated, with particle sizes ranging from 10-45 microns.

Benefits of HVOF Gun 

• Low porosity (<1%)       
• Higher bond strength (>10000 psi)
• Uniform repeatability
• Low operating cost
• Higher particle velocities
• Stable deposition rate
• Controlled coating thickness
• Safety interlocks

HVOF Gun Manufacturer in India

Ambica Enterprises is a leading manufacturer, supplier & Exporter of Hvof gun, metalizing gun, zinc spray gun, Arc spray gun, Sand Blasting Machine, sand Blasting Cabinet, grit blasting machine, Sand Blasting Cabinet, Suction Blasting Cabinet, Bench Top Sand Blasting Cabinet, sand Blasting Nozzle, Shot Blasting Room, abrasive media in India at a low price with the best quality for sale.