Flame spraying uses a flame spray gun for coating. A thermal spray process variation in which the controlled explosion of a mixture of fuel gas, oxygen, and the powdered coating material is utilized to melt and propel the material to the workpiece. It includes low-velocity thermal spray powder, red, and wire flame processes, and high-velocity processes.
What Is Flame Spray
Wire flame spray is a type of thermal spray coating that involves melting and spraying a metal wire to create a metallic coating. Powder flame spray gun is another variation of the process in which a metal or ceramic powder is used instead of a wire.
Flame spray is a popular tool for applying corrosion protection or engineering coatings. Architectural steel (balconies, fences, gates, etc.) through structural steel and marine coatings on ships, wind turbines, monopiles, and offshore oil platforms are all commonly coated with corrosion coatings using flame spray. Zinc, aluminum, or alloys of these two elements are common spray materials. The flame spray process is also used to apply decorative coatings such as bronze and copper. Flame spray is used for engineering coatings, which is a little more specialized, but common coating materials include babbitt for bearings, steels, and molybdenum. As thermal barrier coatings, alumina coatings are commonly powder flame sprayed.
Types of Flame Spray Gun are the following:
- Flame spray guns
- Arc spray gun,
- Plasma arc spray guns, with a number of subsets falling under each category.
Powder Flame Spray Gun
This technique is a thermal spray process in which the substance to be sprayed is in powder form. It is the simplest and among the oldest spray processes. The power is fed to the flame spray gun manufacturer, with a simple powder feeder or a more sophisticated powder feeder, through the central bore of a nozzle where it is heated by the oxy-fuel flame and carried by the carrier gas and the hot gas to the workpiece.
Wire Flame spray gun
This process is “a spray process in which the feedstock is in the form of a wire or a cord. It was the very first spray process, developed by Dr. Schoop in 1912. The setup consists of a nozzle in which acetylene is mixed with oxygen and burned at the nozzle face, the flame extending into an air cap. The wire, rod, or cord is fed axially and continuously at a velocity such that the tip is melted in the flame.
Rod Flame spray gun
Mostly this thermal spray gun using in the ceramic coating, A ceramic rod is feed in metalizing gun and melted by oxy-fuel gases. The melted ceramic is the deposit on the substrate and forms a layer.
Flame Spray Gun Price in India
Flame Spray Gun Price in India depends on the Quality and type of coating on the substrate surface. A stream of compressed air, surrounding the flame, atomizes and generates material droplets in a continuous stream. The advantage of the system is that only molten droplets are propelled towards the substrate. If the material is fed at too high velocity the wire (rod or cord) comes out of the gun cap.
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