Valve

Application to ball valves: During the frequent opening and closing of ball valves, friction will occur between the ball body and the valve seat, which is easy to cause wear and tear, affecting the sealing performance and service life of the valve. By thermally spraying tungsten carbide and other wear-resistant coatings on the surface of the ball and valve seat, the surface hardness and wear resistance can be significantly improved, the coefficient of friction can be reduced, the amount of wear can be reduced, and the valve can maintain a good sealing effect in long-term use. For example, in petrochemical pipelines, some high-pressure, high-flow media will cause greater wear to the ball valve, and the ball valve coated with tungsten carbide coating can effectively resist this wear and extend the maintenance cycle of the valve.
Applied to plug valves: There is also a relative movement between the plug and the valve body of the plug valve, which is prone to wear. Thermal spray ceramic coating or cermet composite coating can enhance the wear resistance of the plug and valve body, so that the plug valve can still work normally under the working conditions containing abrasive media such as solid particles, and ensure that the opening and closing of the valve are flexible and reliable.
Application to butterfly valves: Butterfly valves are usually used for the control of various fluid media, and in some environments containing corrosive media such as acids and alkalis, the butterfly plate and valve seat are susceptible to corrosion. The use of thermal spraying corrosion-resistant metal coatings, such as nickel-based alloy coating or stainless steel coating, can form a dense protective film on the surface of the butterfly plate and valve seat, effectively isolate the contact between the corrosive medium and the substrate material, prevent the occurrence of corrosion, and improve the service life of the butterfly valve in harsh corrosive environments. For example, in chemical wastewater treatment systems, butterfly valves coated with nickel-based alloys can work stably for a long time to control the flow direction and flow of wastewater.
Application to gate valves: Gate valves and valve seats also face corrosion problems when they come into contact with corrosive media. Thermal spray ceramic coatings or organic polymer coatings can provide good corrosion protection for rams and valve seats. The ceramic coating has excellent chemical stability and corrosion resistance, and can resist the erosion of a variety of strong acids and alkalis; Organic polymer coatings have good flexibility and water resistance, which can prevent the penetration and corrosion of the medium to a certain extent.
Application of safety valve: In some high-temperature industrial environments, such as thermal power generation, metallurgy and other fields, safety valves need to maintain good performance at high temperatures to ensure the safe operation of equipment. By thermally spraying high-temperature resistant ceramic coating or intermetallic compound coating on the surface of key components such as spool and seat of the safety valve, the high-temperature resistance and thermal stability of these components can be improved, so that they are not prone to deformation and oxidation in high-temperature environments, so as to ensure that the safety valve can be accurately opened and closed at critical moments, and play a role in protecting the safety of equipment and personnel.
Application in high-temperature ball valves: For ball valves in high-temperature operating conditions, thermal spraying high-temperature resistant coating is equally important. For example, in the petroleum cracking unit, the high-temperature and high-pressure pyrolysis gas needs to be controlled by the ball valve, and the thermal spraying of yttrium oxide stabilized zirconia and other ceramic coatings can effectively improve the high-temperature resistance of the ball valve, so that the ball valve can work normally in a high-temperature environment of more than 1000 °C to ensure the smooth progress of the production process.
Applied to globe valves: The sealing performance of globe valves directly affects their working efficiency and safety. Thermal spraying on the disc and seat surfaces of the globe valve has good self-lubrication