High Velocity Oxy Fuel Spray System: HVOF 2800
Metal Coat’s HVOF 2200 and 2800 guns are designed to create high-integrity coatings of metals, alloys, superalloys, and carbides. Coatings applied with these HVOF guns feature high density, minimal oxide content, superior microhardness, strong adhesion, and excellent machinability.
These guns may be supplied with a water-cooled front section that allows higher particle velocities, improving coating substrate and interparticle bonding. Water-cooled guns generally produce coatings with greater density, hardness, and reduced oxide presence. Standard water-cooled guns consume minimal potable water at pressures as low as 2.76 bar (40 psi). Spray material rates can reach up to 150 g/min (20 lb/h) depending on gun setup and material, reducing spraying time. Machine-mount configurations exist for automated HVOF systems, alongside handheld versions suitable for manual operation.
FEATURES AND BENEFITS
EFFECTIVE
- Produces superior coatings for wear, corrosion and other surface functions that resist the harshest of service conditions.
- Coatings are very dense, low in oxides, high hardness, low residual stress within the coating structure.
- Coatings have very high bond strengths.
- Relatively cool process, allows coating of thin-walled components.
- Choice of fuel gases and gun configurations to suit application, economics and quality requirements.
- Smooth ‘as-sprayed’ surface finishes can be used as is for many applications, and reduces processing when post-coat machining is necessary.
- Surfaces can be machined to high finishes and tight dimensional tolerances.
- Rugged, reliable design eliminates backfire.
- Easy to maintain with modular gun hardware that is simple to remove and replace without additional tools.
- Simple powder feed start and stop on hand-held gun using built-in handle trigger.
- Gun-mounted valve core actuator lever on hand-held models easily starts and stops the flow of process gases.
ECONOMICAL
- Low process gas consumption compared to other HVOF spray guns.
- Water consumption for water-cooled guns is minimal, with only potable water quality required.
- Axial powder feed eliminates coating material build up on the extended air cap, increasing gun service life.
Standard System
- HVOF-2200 Gun/ HVOF 2800 Gun
- Control Panel
- Powder Feeder; MPF-3350 / MPF-700
- Gas Regulator for Oxygen & LPG
- Air Control Unit
- Hose Unit for Oxy, Fuel & Air (7.5 mtr. length)
- Portable Trolley
- Set of Recommended Spares for HVOF-2200 Gun/ HVOF 2800
Optional Accesories
- LPG Vaporizer
- Water Jam Box
- Extension Kit for internal spray (length 1′, 2′, 3′)
- Water Cooled Jacket (Hybrid)
- Gas Manifold for
- Oxygen cylinders (6, 10 or 20#)
- Air Blast Unit (for cooling substrate)
- Extra length of Hose (upto 30 mtr)
- Extra length of Powder Feed Tube (upto 30 mtr)
SPECIFICATIONS
| HVOF GUN | HVOF -2200/2800 |
| Weight | 1.83 Kg. |
| Gases | Oxygen, LPG/Propane, Air |
| CONTROL PANEL | HVOF-CONTROL-PANEL |
| Dimensions | 1570 x 610 x 200 mm |
| Weight | 41.2 Kg. |
| Electricity | 220 V / 1 P / 50/60 Hz , 110 V / 1 P / 60 Hz (Optional) |
| POWDER FEEDER | MPF-700 |
| Capacity | 700 CC (3350 CC may also be used) |
| Weight | 36.5 Kg |
| Electricity | 110 V / 1 P / 60 Hz (Optional) |
| Gas | Flow (LPM) | Operating Pressure |
| Oxygen | 250-350 | 10 Kg/cm2 |
| LPG/Propane | 160-80 | 7.0 Kg/cm2 |
| Air | 600-700 | 7.0 Kg/cm2 |
| Powder | Spray Rate | Deposit Efficiency |
| WC-12Co | 38 gm/min (5.01 lb/hour) | 70% |
| WC-17Co | 38 gm/min (5.01 lb/hour) | 60% |
| WC-10Co-4Cr | 38 gm/min (5.01 lb/hour) | 70% |
| Cr3C2 -NiCr | 25 gm/min (3.30 lb/hour) | 58% |