Chemical reciprocating pump plunger spraying ceramic coating

       The reciprocating pump is a kind of machinery widely used in the chemical industry. It transports the chemical liquid medium through the reciprocating motion of the plunger. The working conditions of the plunger of the high-pressure reciprocating pump and the high-pressure metering pump are very complex, and the conditions of use vary widely. Its service life is related to many factors such as the composition, concentration, pH value, temperature, pressure, flow rate, flow rate, stroke, stroke, operating state, and performance of the dual friction pair material of the transported chemical liquid medium. The friction and wear between the plug surface and the sealing packing, especially when the medium is corrosive, produces corrosion products to form corrosion wear, which makes its service life short, and it is easy to cause leakage and shut down for maintenance.

The traditional chrome-plated plunger or the heat-treated and quenched plunger can only be used for about one month with a short service life, which has become the key vulnerable part of the plunger type reciprocating metering pump. Plasma spraying process is used to spray corrosion-resistant and wear-resistant ceramic coatings on the plunger substrates of carbon steel, low-alloy steel, stainless steel, titanium alloy, etc. The following features.

1. The composite material structure can organically combine the strength and toughness of metal and alloy materials with the high wear resistance and corrosion resistance of ceramic materials.



2. According to the composition, concentration, pH, temperature, etc. of the transported chemical solution, the ceramic coating material with excellent corrosion resistance and wear resistance can be easily selected.



3. The ceramic coating has the characteristics of small friction coefficient and no adhesion, so it can reduce friction power consumption and low energy consumption.



4. Long service life The service life of the chrome-plated plunger can be increased by 3 to 6 times



5. Reducing pollution to replace chrome plating can fundamentally solve the problem of environmental pollution caused by chrome plating.



Reciprocating pumps and metering pumps are widely used in petroleum, chemical, chemical fiber, medicine, food, metallurgy, electric power, ships and other departments. The use of thermal sprayed ceramic coated plungers to replace the traditional chrome-plated plungers has significant benefits and great achievements. Tianmeng Company uses thermal spraying technology to repair the plunger for a long time, and has rich experience. Customers are welcome to call for consultation.