Thermal spraying technology has a history of development in my country for decades. Since its introduction into China, its development momentum has been very rapid. Today, it has become the most important and commonly used technology in surface treatment engineering. How does thermal spraying technology occupy such an important position in surface treatment engineering? Today, we will popularize it for everyone.
Thermal spraying technology is an important technology in surface treatment engineering. It plays a role in surface strengthening and protection of workpieces. It has rich spraying materials and can give the surface wear resistance, corrosion resistance, oxidation resistance and high temperature wear, heat insulation, insulation, etc This kind of function is unique and easy to operate and flexible, especially suitable for on-site construction and repair of workpieces and parts. Thermal spraying technology is not only an effective method for surface strengthening and pre-protection of new equipment, but also an economical and effective method for on-site construction and local repair of workpieces. Over the years, it has been widely used in various general machinery parts in various industrial fields , Such as the strengthening and repair of various shafts, valves, fans, etc., and achieved significant social and economic benefits. In the past ten years, thermal spraying technology has developed rapidly at an annual growth rate of 5% -10%, and the global thermal spraying application output value has reached 1.35 billion US dollars.
With the continuous advancement of thermal spraying technology, such as the advent of supersonic flame spraying, supersonic plasma spraying technology, and the continuous development of various new spraying materials, the weaknesses of thermal spray coatings with low bonding strength and poor impact resistance have been overcome in the past. The application of new thermal spraying methods brings a qualitative leap to the quality of the coating, the porosity of the coating can be reduced to 0.5 ﹪ -1.0 ﹪; the bonding strength of the coating can reach 70MPa-140Mpa. With the continuous progress of industrial production technology, the application range of thermal spraying technology in various industrial fields will continue to expand. 
