How metal thermal spraying technology is applied in the aviation field金属热喷涂技术如何应用在航空领域

       Aircraft landing gear usually adopts hard chrome plating technology. With the needs of environmental protection, in order to reduce the environmental pollution caused by the application of chrome plating technology, metal thermal spraying technology (HVOF) is used for spraying, and Co-WC coating gradually replaces chrome plating technology. In the West, etc. Developed countries have generally adopted it. HVOF coating technology has higher bonding strength and better wear and corrosion resistance than chrome plating.

The design principle of aero-engines is a high thrust-to-weight ratio, and the performance required for each component is relatively high. The materials for making engines are high-strength steel, titanium alloys, high-temperature nickel-based and cobalt-based alloys; It has become an important part of the thermal spray coating application market. The parts that use thermal spray coating on aero engines have functions such as high temperature resistance, corrosion resistance and wear resistance. With the development of aero-engines in the direction of high power, high load and high performance, people have put forward higher and higher requirements for aviation materials. It is difficult to meet the needs of the development of aero-engines simply by changing material properties. Processing technology is used in aero-engines to endow aviation materials with special properties such as wear resistance, corrosion resistance, heat insulation and high temperature oxidation resistance. With its unique advantages, thermal spraying technology has become an indispensable surface treatment technology in the manufacture and overhaul of modern aero-engines. It has been widely used at home and abroad, and has achieved significant economic and social benefits.