Introduction of typical applications of metal thermal spraying technology

       1. Petrochemical industry:



1. Thermal spraying aluminum technology is used for anti-corrosion repair in large steel oil tanks in oil refineries. The thickness of the coating is 100-150 μm, and the thickness of the sealing layer of inorganic zinc-rich paint is 50-80 μm. The anti-corrosion life can reach more than 15 years;



2. The oil field drill pipe joint adopts plasma spray welding technology, which is more than 1 times longer than the original 35CrMo drill pipe joint;



3. High-power crankshafts, drill bits, sucker rods in equipment; plungers, cylinder liners, impellers, etc. of various mud pumps; metal ball valves, valves, valve seats, valve plates, etc. in oil pipelines, using metal thermal spraying technology for surface Repair and strengthening, its corrosion resistance and wear resistance are significantly improved.



2. Electric power industry:



1. The four pipes of the power plant boiler (boiler water wall pipe, superheater pipe, reheater pipe, economizer pipe) are repaired with anti-corrosion and wear-resistant coating.



2. Metal thermal spraying strengthening and repairing such as coal mill shaft diameter, steam engine cylinder block, motor rotor, powder discharger, induced draft fan, and gas turbine.

3. Cavitation damage and sediment wear of over-current components of hydropower plant turbines, and anti-corrosion treatment of wind power flanges.

3. Iron and steel metallurgy industry:



1. Strengthen and repair the surface of various rollers and rollers with anti-corrosion and wear-resistant coatings.



2. Due to continuous operation at high temperature, the rolls of the continuous casting machine are continuously deformed by high temperature oxidation. The rolls of the continuous casting machine are repaired and strengthened by spraying Ni-Cr-AL+ composite ceramic coating, and the service life is greatly improved;



Fourth, the paper industry:



1. The surface of the drying cylinder is sprayed with anti-corrosion and wear-resistant coating to enhance the performance of the drying cylinder and improve the quality of paper.



2. The sizing roller, calendering roller, corrugating roller, etc. are strengthened by spraying.



5. Steel, ship and other machinery industries:



1. In iron and steel enterprises, a large number of equipments operate under high temperature, high speed, heavy load or corrosive environment. The use of thermal spraying technology to prepare anti-corrosion and wear-resistant coatings on their surfaces can effectively enhance their performance.



2. For structural parts exposed to outdoor and marine atmosphere for a long time, thermal spray zinc, thermal spray aluminum and their alloy coatings are used to implement cathodic protection for long-term atmospheric anti-corrosion.