AMST offers twin wire arc spray coating system AMST-8830 which combines typical features of the modern arc spray technology. The offered system operates on Pull Type principle wherein the wire is pulled by the electric arc gun roller which is driven by a pneumatic air motor. The offered arc spray system is equivalent to Tafa Praxair’s 8830 type arc spray gun.
The offered arc spray system is suitable for any type of pure metallic wire, alloyed wire and cored wire of diameter 1.6mm to 2.3mm (Aluminium) and 2.5mm Zinc as per selected model. The most common application arc spray coating system is anti-corrosion coating.
The model AMST-8830 arc spray Gun utilizes electrical D.C current to melt the metallic wire at suitable arc voltage required for the respective metal property and uses compressed air high velocity to finally atomize the molten metal particles into an extremely fine spray pattern on to substrate to be metalized. During arc spray metalizing process, an electric arc is generated & maintained consistently at the contact point of two metal wires.
Two versions of arc spray systems are offered viz AIR Type or Electric Type AMST-8830-AR and AMST-8830-EL respectively.
| MODEL | AMST-8830-200 | AMST-8830-400 | AMST-8830-600 |
|---|---|---|---|
| SYSTEM CAPACITY | 200 Amps @ 100% duty 150 Amps @ 75% duty |
400 Amps @ 100% duty 300 Amps @ 75% duty |
600 Amps @ 100% duty 450 Amps @ 75% duty |
| HIGH VELOCITY | Not standard Feature | Standard Feature | Standard Feature |
| WIRE DIAMETER | 1.6mm Max | 1.6mm to 2mm | 1.6mm to 3.17mm |
| POWER REQUIREMENT | 7kW, 415V, 3Ø | 15kW, 415V, 3Ø | 25kW, 415V, 3Ø |
| WEIGHT OF SYSTEMS | 135 Kgs | 205 Kgs | 230 Kgs |
| STANDARD CABLE | 5 Mtrs Length | 7.5 Mtrs Length | 10 Mtrs Length |
| AMST-8830-AR ARC SPRAY GUN | |
|---|---|
| GUN TYPE | : Pull Type |
| WIRE DRIVE | : By Pneumatic Motor |
| RPM AIR MOTOR | : 1000 & 2500 RPM |
| WEIGHT OF GUN | : 3.85 Kgs Approx |
| SIZE OF WIRE USED | : 1.6mm to 3.17mm |
| WIRE FEED CONTROL | : By a Ball Valve |
| OPERATION | : MANUAL SPRAY |
| SAFETY STANDARD | : CE Compliant |
| AMST-8830-EL ARC SPRAY GUN | |
|---|---|
| GUN TYPE | : Pull Type |
| WIRE DRIVE | : By Semi DC Servo |
| WIRE FEED SPEED | : Display in cm/min |
| WEIGHT OF GUN | : 4.3 Kgs Approx |
| SIZE OF WIRE USED | : 1.6mm to 3.17mm |
| WIRE FEED CONTROL | : By Potentiometer |
| OPERATION | : AUTOMATIC |
| SAFETY STANDARD | : CE Compliant |
| AMST ARC POWER SOURCE | |
|---|---|
| TYPE | : Diode Based |
| CONTROL PANEL | : Inbuilt |
| WIRE REEL STAND | : Mounted on P.S |
| AMPS RANGE | : 200, 400 & 600 |
| MAINTENANCE | : Low maintenance |
| REGULATORS & VALVE | : Fitted on the Panel |
| EMERGENCY | : Switch on the Panel |
| WIRE FEED DISPLAY | : On 8830-EL System |
AMST offers ID extensions for arc spray gun for inside coating where coating flame from standard gun cannot reach. The ID extension is offered is three length 1’, 2’ & 3’. Minimum ID of 100mm can be sprayed with the extension.
| Model | Length |
|---|---|
| Type 8830-AExT-1 | 300mm |
| Type 8830-AExT-2 | 600mm |
| Type 8830-AExT-3 | 900mm |
Twin wire arc spray process uses DC power to energize two conductive wires: one positive and the other negative. The two wires are electrically charged with opposing polarity and are fed into the arc gun at matched, controlled speeds. When we bring the wires together at the contact point, the opposing charges on the wires create enough heat to continuously melt the tips of the wires. We use compressed air to atomize the now molten material and accelerate it onto the workpiece surface to form the coating.
