Praxair and TAFA's Model SG- 100 plasma spray gun is regarded as one of the most flexible and durable plasma spray guns on the market today. The Model SG-100 is designed to produce exceptional plasma coatings, regardless of which system drives it. Operating at energy levels up to 80 kW in any of three modes -subsonic, Mach I and Mach II - the gun is suitable for a wide range of applications requiring metals, carbides or ceramics. The Model SG-100's unique design accepts internal and/or external powder injection at a variety of injection angles and features anodes and cathodes renowned for long service life. Internal injection provides the most efficient spraying condition and generates the highest-quality coatings. It also ensures maximum powder particle entrainment at the point of highest energy within the plasma stream by injecting the powder closest to the highest arc temperatures, providing optimum energy transfer and particle velocity, which combine to create high powder deposition efficiencies.

The Model SG-100's small number of self-aligning parts makes assembly quick and accurate, saving on down time. Flexibility, efficiency and proven excellence have made the Model SG-100 plasma gun an industry favorite.

The Model SG-100 can use a variety of process gases including argon, nitrogen, helium, and hydrogen. Using helium as a secondary gas greatly extends hardware life, reducing operational costs and rebuilding time. On average, a hardware set can last from 200 to 300 actual spray hours.

• Self-aligning components
• A range of hardware configurations
• Internal and/or external powder feed
• Extended life anodes and cathodes
• High deposit efficiencies
• Internal diameter capability

The Model SG-200 plasma spray gun is a smaller version of the Model SG-100 designed for energy levels up to 40 kW. Specifically suited for machine-mounted applications, including true 90 degree ID coatings, the Model SG-200 works best in production environments requiring rapid, uniform and repeatable coatings.

Available as options for the Model SG-
100 and SG-200 (above) are two external
powder injection ports. These external
ports can be used in place of, or in
conjunction with, the internal ports.

The versatility of the Model SG-100 gun extends the capability to coat internal diameters to as small as 38 mm (1.5"). The Model 2086A and Model 2700 extensions to the standard Model SG-100 produce quality ID coatings at energy levels up to 30 kW. Interchangeable components allow quick conversion from OD to ID operation, adding to the unmatched capability of the Model SG-100 gun. The Model 2086A extension can deposit coatings into diameters as small as 64 mm (2.5") is supplied standard with 45° spray angle hardware while configurations for 60° and straight ahead are also available. The Model 2700 can coat diameters as small as 38 mm (1.5") and is supplied with 45° hardware.

The Model SG-100 gun operates in a number of modes (subsonic, Mach I and Mach II) to allow for optimum user flexibility. The parts are designed to be self-aligning and assembled easily and quickly while maintaining concentricity, i.e., the center line of the electrode on the axis of the nozzle (anode). The more precise the alignment is, the more centered the arc is within the nozzle.

• Minimum heat loss to the nozzle
• Long nozzle (anode) life
• Simpler, more reliable powder injection into the plasma stream
• Minimal nozzle powder buildup
• Improved coatings (through improved powder injection, maximum heat to the powder and symmetrical arc position on the axis of the nozzle)

Precise, Matching Spare Parts
Aftermarket suppliers typically do not design,
manufacture or test equipment, and stack
tolerances are overlooked or simply not
considered. Individual parts are merely
copied.As a plasma spray original equipment
manufacturer, Praxair and TAFA produces
components with the understanding that
0.001" (25.4 µm) accuracy can dramatically
improve or destroy performance.