All methods of thermal spraying involves the projection of small molten particles onto a prepared surface where they adhere and form a continuous coating. To create the molten particles, a heat source, a spray material and an atomisation/projection method are required. Upon contact, the particles flatten onto the surface, freeze and mechanically bond, firstly onto the roughened substrate and then onto each other as the coating thickness is increased.
The metal spray equipment falls into four main categories, Powder Flame Spray, Combustion Wire Flame Spray, Twin Wire Arc Spray, High Velocity Oxygen Fuel (HVOF) and Plasma Spray.
Please view the individual process pages to read more about each process.
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