Principle of thermal spraying

       Thermal spraying refers to a series of processes in which fine and dispersed metallic or non-metallic coating materials, in a molten or semi-molten state, are deposited on the surface of a prepared substrate to form a certain spray deposition layer. The coating material can be in the form of powder, ribbon, wire or rod. The thermal spray gun provides the necessary heat by fuel gas, electric arc or plasma arc, heats the thermal spray material to a plastic or molten state, and then is accelerated by compressed air, so that the confined particle beam impinges on the surface of the substrate. Particles that hit the surface are deformed by stamping to form a laminated sheet that adheres to the surface of the prepared substrate, cools and accumulates, eventually forming a layered coating. The coating can achieve high temperature corrosion resistance, wear resistance, heat insulation, electromagnetic wave resistance and other functions due to different coating materials.

        Uses: Under the action of high-speed airflow, it is atomized into fine molten droplets or high-temperature particles, which are sprayed to the surface of the treated workpiece at a high flying speed to form a firm covering layer, so that the surface of the workpiece can obtain different hardness and wear resistance. , Corrosion resistance, heat resistance, oxidation resistance, heat insulation, insulation, electrical conductivity, sealing, disinfection, microwave radiation resistance and various other special physical and chemical properties. It can repair the old and make good use of waste in equipment maintenance, so that the scrapped parts can be "revived"; it can also be strengthened and pre-protected in the manufacture of new products, so that it can "prolong life".