Metal thermal spraying technology is a low-input, high-output project. Through spraying and surface strengthening or protection or repairing the old, its life can be doubled or even dozens of times longer. At present, my country has been able to produce more than 30 varieties of spraying equipment and hundreds of spraying materials. The above ten metal thermal spraying methods have been adopted in China. This new surface engineering technology has been widely used in various sectors of the national economy and has achieved major economic Benefit, starting from the "Sixth Five-Year Plan", metal thermal spraying has been listed as a key promotion project by the state for three consecutive five-year plans. According to incomplete statistics, the "Sixth Five-Year Plan" has achieved direct economic benefits of 1.7 billion yuan, and the "Seventh Five-Year Plan" is two 1.4 billion yuan, and the "Eighth Five-Year Plan" is 4 billion yuan. All regions and departments have seized a large number of typical parts for promotion and application. Such as: blast furnace slag port of the Ministry of Metallurgy; thermal spraying repair of gas valve piston rings and rails of the Ministry of Railways; middle groove and hydraulic prop of the scraper of the Coal Ministry; various plungers and drill pipe joints of the petroleum industry; machinery industry Valve sealing surface for metal spraying; drying cylinders in the paper industry; thermal barrier coatings in the aviation sector, etc., currently promoted and applied under the unified organization and coordination of the National Metal Thermal Spraying Collaborative Group, a network and system have been formed, creating a new creation for further promotion and application. Although favorable conditions have been established, the development among regions and departments is still unbalanced, especially in some heavy industry bases, which should be vigorously promoted and applied.
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