Thermal spraying refers to a series of processes in which fine and dispersed metallic or non-metallic coating materials are deposited, in a molten or semi-molten state, onto the surface of a prepared substrate to form a sprayed deposit. It is a technology that uses a heat source (such as arc, plasma spraying or combustion flame, etc.) to heat a powdered or filamented metal or non-metallic material to a molten or semi-molten state, and then spray it to the surface of the pretreated substrate at a certain speed with the help of the flame itself or compressed air, and deposit it to form a surface coating with various functions. Use the energy provided by fuel gas or electric arc, etc.
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