A.C. – H.V.A.F. Quasar System

A.C. – H.V.A.F. Quasar System

A.C. – H.V.A.F. Thermal Spray Equipment

Schematic principle of the A.C. – H.V.A.F. gun

 The Solid Spray Technologies’ A.C. – H.V.A.F. System is a robust industrial platform for application of premium quality coatings in mass production and spray shop environments. The A.C. – H.V.A.F. System was designed to apply all the standard H.V.O.F. materials at higher quality and increased productivity, eliminating at the same time all the disadvantages of deploying and operating H.V.O.F. and old generation H.V.A.F. systems. Dubbed "Quasar" for the enormous power of its jet, the system applies coatings (especially carbides) so quickly and effectively that every application brings a new opportunity for substantial savings in costs and time.

Exceptional Coating Quality

The Quasar A.C. – H.V.A.F. System applies premium quality metal and carbide coatings from all commercial H.V.O.F. powders.

Quasar A.C.-H.V.A.F. System

Quasar A.C. – H.V.A.F. System consists of a control system, a spray gun and a powder feeder. 

TSR3000HX Spray Gun

The TSR3000HX represents the new generation of A.C. – H.V.A.F. guns. The gun features hydrogen micro-injection that boosts the deposit efficiency by 15-25% and further improves coating quality. The design is lighter, more ergonomic and efficient. The gun includes six nozzle configurations, two for spraying carbides, and four for spraying metals. The powder jet is extremely narrow, although the width can be precisely adjusted by a set of pre-configured powder injectors, depending on the desired target efficiency. TSR3000HX features a miniature built-in remote control that includes system start-up/shut-off with safety lock, powder on/off, a display with powder feed set point and up/down controls, as well as system status and warning indicator lights. The gun is also available in non-hydrogen configuration to be used primarily for manual coating application, which is made easier by the gun’s light-weight and ergonomic design.

TSR3000HX Features:

    * Hydrogen micro-injection
    * Premium coating quality
    * 1800-2000 ft/sec (600-650 m/sec) particle velocity
    * Axial powder injection
    * Efficient air cooling at 100% duty cycle
    * Up to 66 pounds per hour (30 kg/hr) spray rate of carbides
    * Up to 50 pounds per hour (23 kg/hr) spray rate of metals
    * Instant start/stop operation
    * Non-clogging nozzle
    * Six nozzle configurations for carbides and metals
    * Operator error forgiving design
    * Built-in miniature remote control
    * Thick coating capability (12+ mm)

Hard Chrome Replacement 

Good coating morphology permits polishing of WC-based coatings to an optical mirror finish. High spray rates, absence of oxygen and little consumption of spare parts make the cost of the A.C.-H.V.A.F. sprayed carbides very competitive to other hardfacing technologies, including hard chrome electroplating, braze cladding and weld overlay. It is the best alternative to hard chrome plating for OEMs that industry currently has to offer.

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Thick Coatings are Possible

Because of the lowered residual stresses in the AC-HVAF coatings due to solid particle impact, thicker carbide layers are possible. Carbide coatings are routinely applied to 0.1” (2.5 mm) thick. In special cases coatings as thick as 13 mm can be applied.

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Consistent Coating Quality

Due to the forgiving nature of the AC-HVAF process the quality of the applied coating remains largely unchanged at shallow spray angles and a wide range of gas parameters. Only the particles with the proper temperature and velocity characteristics form a coating; the particles with poor adhesion are removed by the grit-blasting effect of the AC-HVAF process. In other words, changing the spray parameters will only affect the deposit efficiency, not coating quality. Deposit efficiency varies between 50 and 75% for WC-based powders, and 65 to 85% for metals and alloys.

A.C.-H.V.A.F. Microstructures

                                                Tungsten carbide

 

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