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A reciprocating pump is a positive displacement pump that uses the reciprocating motion of a piston, plunger or diaphragm in a pump cylinder to alternately increase and decrease the working volume in the cylinder to transport liquid or pressurize it. Reciprocating pumps are divided into three types according to different reciprocating components: piston pumps, plunger pumps and diaphragm pumps. The reciprocating pump is a kind of machinery widely used in the chemical industry sector. It transports chemical liquid media through the reciprocating motion of the plunger. The working conditions of the plungers of high-pressure reciprocating pumps and high-pressure metering pumps are very complex, and the usage conditions vary widely. Due to the friction and wear between the plunger surface and the sealing packing, especially when the medium is highly corrosive and corrosion products are produced to form corrosion wear, the service life will be short and leakage will easily occur, resulting in shutdown for maintenance. The thermal spray ceramic-coated plunger is used to replace the traditional chrome-plated plunger, which has significant benefits and is more corrosion-resistant and wear-resistant.
High nickel-chromium alloy is sprayed on the surface of ordinary plungers for strengthening. Nickel-chromium alloy has high strength, wear resistance and corrosion resistance. The nickel-chromium alloy coating formed by thermal spraying technology is a good wear-resistant coating and also has corrosion resistance. Its service life is 20-30 times that of conventional ones.
| Product Name | Reciprocating pump |
| Type | Spraying |
| Processing cycle | 1-3 days |
| Production process | Supersonic flame spraying, arc spraying, laser cladding |
| Coating composition | Nickel-gold alloy, nickel-chromium alloy |
| Coating index | Hardness HRC55-60 |
| Roughness | Ra0.2-0.4 |
| Bond strength | ＞76MPa |
Drilling equipment:
Plunger plays a key role in oil drilling equipment, especially in the pressure and delivery of mud to the wellbore, cooling and lubrication of the drill bit, and conveying gravel. The service life of the plunger directly affects the drilling efficiency, so high-performance plungers are essential to increase drilling speed and reduce costs.
Pumping system:
Plunger motors can be used in reciprocating pump systems commonly used in the oil and gas industry. These motors can drive plungers or pistons to produce the reciprocating motion required to pump fluids such as crude oil, water or chemicals. They are suitable for high-pressure and high-flow applications, such as hydraulic fracturing operations.
Valve drive:
Plunger motors can be used to drive various types of valves in oil machinery, including gate valves, ball valves, and throttle valves. The precise control and fast response of plunger motors make them ideal for applications where precise valve positioning and fast adjustment are critical to controlling fluid flow.
Wellhead control:
Plunger motors can be used in wellhead control systems to operate various components of wellhead assemblies, such as blowout preventers (BOPs), safety valves, and flow control devices. This ensures the safe and efficient operation of oil and gas wells.
Downhole tools:
Plunger motors can be miniaturized and used for downhole tools and instruments. They can power tools such as downhole pumps, sensors and actuators used for reservoir monitoring, well intervention and data acquisition in oil and gas wells.
The traditional chrome-plated plunger or heat-treated quenched plunger has a short life span of only about one month, becoming a key vulnerable part of the plunger reciprocating metering pump. Using the plasma spraying process, corrosion-resistant and wear-resistant ceramic coatings can be sprayed on the plunger substrates of carbon steel, low alloy steel, stainless steel, titanium alloy, etc., and after grinding, a new type of ceramic-coated plunger is made, which has the following characteristics.
1. The composite material structure can organically combine the 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 chemical solution being transported, it is easy to select ceramic coating materials with excellent corrosion resistance and wear resistance.
3. The ceramic coating has the characteristics of a small friction coefficient and no adhesion, so it can reduce friction power consumption and low energy consumption.
4. Long service life. Compared with the chrome-plated plunger, the life span can be increased by 3 to 6 times.
5. Reduce pollution. Replacing chrome plating can fundamentally solve the environmental pollution problem caused by chrome plating.
A reciprocating pump is a positive displacement pump that uses the reciprocating motion of a piston, plunger or diaphragm in a pump cylinder to alternately increase and decrease the working volume in the cylinder to transport liquid or pressurize it. Reciprocating pumps are divided into three types according to different reciprocating components: piston pumps, plunger pumps and diaphragm pumps. The reciprocating pump is a kind of machinery widely used in the chemical industry sector. It transports chemical liquid media through the reciprocating motion of the plunger. The working conditions of the plungers of high-pressure reciprocating pumps and high-pressure metering pumps are very complex, and the usage conditions vary widely. Due to the friction and wear between the plunger surface and the sealing packing, especially when the medium is highly corrosive and corrosion products are produced to form corrosion wear, the service life will be short and leakage will easily occur, resulting in shutdown for maintenance. The thermal spray ceramic-coated plunger is used to replace the traditional chrome-plated plunger, which has significant benefits and is more corrosion-resistant and wear-resistant.
High nickel-chromium alloy is sprayed on the surface of ordinary plungers for strengthening. Nickel-chromium alloy has high strength, wear resistance and corrosion resistance. The nickel-chromium alloy coating formed by thermal spraying technology is a good wear-resistant coating and also has corrosion resistance. Its service life is 20-30 times that of conventional ones.
| Product Name | Reciprocating pump |
| Type | Spraying |
| Processing cycle | 1-3 days |
| Production process | Supersonic flame spraying, arc spraying, laser cladding |
| Coating composition | Nickel-gold alloy, nickel-chromium alloy |
| Coating index | Hardness HRC55-60 |
| Roughness | Ra0.2-0.4 |
| Bond strength | ＞76MPa |
Drilling equipment:
Plunger plays a key role in oil drilling equipment, especially in the pressure and delivery of mud to the wellbore, cooling and lubrication of the drill bit, and conveying gravel. The service life of the plunger directly affects the drilling efficiency, so high-performance plungers are essential to increase drilling speed and reduce costs.
Pumping system:
Plunger motors can be used in reciprocating pump systems commonly used in the oil and gas industry. These motors can drive plungers or pistons to produce the reciprocating motion required to pump fluids such as crude oil, water or chemicals. They are suitable for high-pressure and high-flow applications, such as hydraulic fracturing operations.
Valve drive:
Plunger motors can be used to drive various types of valves in oil machinery, including gate valves, ball valves, and throttle valves. The precise control and fast response of plunger motors make them ideal for applications where precise valve positioning and fast adjustment are critical to controlling fluid flow.
Wellhead control:
Plunger motors can be used in wellhead control systems to operate various components of wellhead assemblies, such as blowout preventers (BOPs), safety valves, and flow control devices. This ensures the safe and efficient operation of oil and gas wells.
Downhole tools:
Plunger motors can be miniaturized and used for downhole tools and instruments. They can power tools such as downhole pumps, sensors and actuators used for reservoir monitoring, well intervention and data acquisition in oil and gas wells.
The traditional chrome-plated plunger or heat-treated quenched plunger has a short life span of only about one month, becoming a key vulnerable part of the plunger reciprocating metering pump. Using the plasma spraying process, corrosion-resistant and wear-resistant ceramic coatings can be sprayed on the plunger substrates of carbon steel, low alloy steel, stainless steel, titanium alloy, etc., and after grinding, a new type of ceramic-coated plunger is made, which has the following characteristics.
1. The composite material structure can organically combine the 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 chemical solution being transported, it is easy to select ceramic coating materials with excellent corrosion resistance and wear resistance.
3. The ceramic coating has the characteristics of a small friction coefficient and no adhesion, so it can reduce friction power consumption and low energy consumption.
4. Long service life. Compared with the chrome-plated plunger, the life span can be increased by 3 to 6 times.
5. Reduce pollution. Replacing chrome plating can fundamentally solve the environmental pollution problem caused by chrome plating.
