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In mechanical use, corrosion and wear of parts is relatively common and the main problem affecting production and operation. In thermal power plants, the discharge of fuel, dust and slag required by coal-fired furnaces is completed by various types of fans. , Induced fan, powder discharger and primary fan, the working environment of powder discharge machine and induced draft fan is relatively bad. The fan blade is one of the core components of the wind turbine, accounting for about 15%-20% of the total cost of the fan. The quality of its design will directly affect the performance and benefit of the fan. When the fan blade is working, the dust particles and the impeller rotate to form a relative motion, which will cause scouring, resulting in blade wear, impeller loss of balance, and blade rupture, which affects the operation of the fan and easily leads to accidents. So, how to effectively improve this problem?

wococarbide.com uses plasma spraying technology to repair it by thermal spraying. Plasma spraying is a technology for surface strengthening and surface modification of materials, which can make the surface of the substrate have wear resistance, corrosion resistance, high temperature oxidation resistance, electrical insulation, heat insulation, Radiation protection, wear reduction and sealing properties. Plasma spraying technology is a method of using a plasma arc driven by direct current as a heat source to heat ceramics, alloys, metals and other materials to a molten or semi-molten state, and spray it to the surface of the pretreated workpiece at a high speed to form a method that adheres firmly to the surface layer. .

Plasma spraying technology is a new multi-purpose spraying method developed after flame spraying. It has: ①High temperature resistance, which is convenient for spraying high melting point materials. ②The speed of sprayed particles is high, the coating is dense, and the bonding strength is high. ③ Since the inert gas is used as the working gas, the sprayed material is not easy to be oxidized. At present, it has been widely used in corrosion and wear repair of mechanical parts.

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