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Spray coating processing SPRAY PROCESSING
Chromium oxide spraying equipment
Introduction to Plasma Spraying Technology: The SX-80 Plasma Spraying Equipment Plasma spraying is a thermal spraying process that uses a plasma arc as its heat source and relies primarily on sprayed powder materials. ① Steps of Plasma Spraying During plasma spraying, a DC arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the working gas introduced into the system, turning it into a high-temperature plasma that is ejected from the nozzle, forming a plasma flame. Powder particles are fed into the flame by a carrier gas, where they melt, accelerate, and are sprayed onto the substrate material, forming a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used. ② Characteristics of Plasma Spraying (1) It can spray a wide variety of coating materials, especially refractory materials with high melting points, such as refractory metals, ceramics, metal-ceramics, and other special functional materials. (2) Inert gases can be selected as the working medium, reducing oxidation reactions of the sprayed particles during flight. (3) The coating exhibits high bonding strength and low porosity; fine coatings can be produced by precisely controlling process parameters. ③ The main components of plasma spraying equipment include the spray gun, powder feeding mechanism, rectifier power supply, gas supply system, water cooling system, and control system. General Layout of Plasma Spraying Equipment 2. Configuration of the SX-80 Plasma Spraying Equipment The SX-80 plasma spraying equipment was developed based on the introduction and absorption of PT-A3000 and METCO-9M plasma spraying equipment. Its overall performance level is comparable to that of the METCO-9M. The equipment includes: ① Main Power Supply ② Control Cabinet ③ Transfer Box ④ Powder Feeder ⑤ Spray Gun ⑥ Heat Exchanger and Piping Connections (I) SX-80 Main Power Supply The main power supply is a thyristor-controlled rectifier with a maximum input power of 85 kW and a duty cycle of 100%. The maximum output power is 80 kW, and it can operate normally under grid voltage fluctuations of ±15%. Current fluctuation range: ±1% to ±2%. Dimensions: 770 mm (length) × 670 mm (width) × 1430 mm (height); Weight: approximately 1000 kg. The SX-80 plasma main power supply provides DC power to the spray gun, featuring intelligent module control, modular rectification, soft arc starting, and capable of continuous 24-hour operation without failure. It is currently the most advanced plasma power supply in China. SX-80 Plasma Spraying System Main Power Supply Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Power | 3P AC 380V, 50Hz/60Hz 2 | Rated Output Power | 80 kW 3 | No-load Maximum Voltage | DC 125V 4 | Working Current | 10–1000 A 5 | Working Voltage | 30–100 V 6 | Power Supply Characteristic | Constant Current Source 7 | Current Accuracy | <1% 8 | Load Rate | 90% 9 | Power Supply External Dimensions | 770×670×1430 mm 10 | Weight | 1000 kg (II) SX-80 Transfer Box The transfer box serves as the central connection point for the entire spraying system, linking the power supply, control cabinet, heat exchanger, and spray gun. It is equipped with high-frequency ignition, water circuit, and gas circuit alarm devices. The box is movable, and the water cable length is 5 m (standard type). Dimensions: 615 mm (length) × 470 mm (width) × 300 mm (height); Weight: approximately 125 kg. The transfer box delivers the combined water and electricity from the plasma equipment to the spray gun, while also providing the high-frequency pulse voltage required for gun ignition and detecting the return water temperature and cooling water pressure. It is lightweight, flexible, and easy to move. It offers excellent arc-starting performance and reduces the instantaneous current surge when the nozzle starts the arc. SX-80 Plasma Spraying System Transfer Box Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Voltage | AC 220V, 50Hz/80Hz 2 | Rated Power | 250 W 3 | Control Mode | External Control 4 | Output High-Frequency Voltage | AC 2500–3000 5 | External Dimensions | 615×470×300 mm 6 | Weight | 125 kg (III) SX-80 Control Cabinet The control cabinet is the central control unit for the entire equipment. It operates on single-phase 220V, 1 kW, and is equipped with a float flow meter, digital displays for current and voltage, and offers manual, automatic, and economical operating modes. It features alarm and fault display functions. Common alarm conditions include: - When the main or auxiliary gas pressure is below 0.3 MPa or the main gas flow rate is below 30 L/min; - When the water temperature exceeds 50°C or the water flow rate is below 8 L/min. Dimensions: 725 mm (length) × 620 mm (width) × 1750 mm (height); Weight: approximately 265 kg. The control cabinet is used for regulating and controlling water, electricity, gas, and powder. It monitors the entire system, allowing users to directly view system parameters such as voltage and current levels. If the electrical or gas parameters fail to meet requirements, the system automatically alarms to prompt the user to make adjustments. By adjusting the current and voltage on the control panel, the temperature of the plasma arc can be regulated. Users can also adjust the main and secondary gas flows and their ratios via the control panel to change the length of the plasma arc and the velocity of the flame, thereby influencing the speed of the powder particles. SX-80 Plasma Spraying System Control Cabinet Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Power | AC 220V, 50Hz/80Hz 2 | Input Power | 300 W 3 | Control Type | PLC Control + Relay 4 | Main Gas Type and Pressure | Argon, Nitrogen 0.6–0.8 MPa 5 | Maximum Main Gas Consumption | 2 m³/h 6 | Secondary Gas Type and Pressure | Hydrogen, Helium 0.25–0.4 MPa 7 | Air and Pressure | Dry 0.5 MPa 8 | Gas Usage | Argon, Argon+Hydrogen, Nitrogen, Nitrogen+Hydrogen 9 | Control Cabinet External Dimensions | 725×620×1750 mm 10 | Total Weight of Control Cabinet | 265 kg (IV) SX-80 Powder Feeder One single-cylinder powder feeder is provided. The particle size range for powder delivery is 5–200 μm, and the repeatability error is less than ±1%. Two cylinders can deliver powder simultaneously, with a feeding rate ranging from 8 to 250 g/min. Dimensions: 560 mm (length) × 530 mm (width) × 1130 mm (height); Weight: approximately 138 kg. The SX-80 plasma powder feeder is a device used to store spraying powder and deliver it to the spray gun according to process requirements. It uses the main gas from the spray gun as the carrier gas. The powder is transported through the rotation of the powder feeding scraper to the outlet of the feeder, and then exits the feeder along with the gas pressure into the spray gun. The potentiometer on the control cabinet panel can adjust the speed of powder delivery. SX-80 Plasma Spraying System Powder Feeder Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Powder Delivery Method | Scraper Air Pressure Type 2 | Single-Cylinder (Dual-Cylinder) Capacity | 3.0 (6.0) L 3 | Powder Carrier Gas | Argon or Nitrogen 4 | Powder Carrier Gas Pressure | 0.45–0.6 MPa 5 | Powder Delivery Speed | 8–250 g/min 6 | Powder Delivery Accuracy | ±1% 7 | Powder Carrier Gas Flow Rate | 300–700 L/h 8 | Powder Feeder External Dimensions | 560×530×1130 mm 9 | Powder Feeder Weight | 138 kg (V) SX-80 Spray Gun An imitation of the METCO9MB spray gun is available. The main working gas is argon or nitrogen, and the auxiliary gas is hydrogen. The working current ranges from 100 to 800 A, and the working voltage is 50–75 V for Ar+H2 and 50–80 V for N2+H2. The spray gun is shown in the figure below, and comes with the following accessories: nozzle, powder and cooling air jet holder, water cable, electrode tip, insulator, sealing ring, and specialized tools. The SX-80 plasma machine is equipped with an SX-80 spray gun, which is designed for industrial thermal spraying operations. Its maximum output power reaches 80 kW. Due to its high rated power, this gun can handle high powder feed rates in production environments, shortening spraying time and reducing processing costs. Its standard structure allows for quick hardware replacement. Various nozzles, electrodes, and powder ports are available to accommodate different material requirements. SX-80 Plasma Spraying System Spray Gun Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Rated Output Power | 80 kW 2 | Rated Current | 10–1000 A 3 | Working Voltage | 30–100 V 4 | External Dimensions | 80×75×190 mm 5 | Weight | 3.5 kg (VI) SX-80 Heat Exchanger (Refrigerator) The SX-80 heat exchanger, also known as a refrigerator or chiller, is primarily used to cool distilled water passing through the spray gun. After being cooled by the refrigeration principle, the water is circulated back into the spray gun at a lower temperature, effectively cooling the gun and maintaining its optimal working temperature, thus extending the nozzle’s lifespan. The dual-compressor drive reduces the overall machine volume and increases your workspace. SX-80 Plasma Heat Exchanger Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Unit External Dimensions | 2000×780×1910 (mm) 2 | Circulating Water Tank Capacity | 250 kg 3 | Cooling Capacity | 35 kW 4 | Outlet Water Temperature Fluctuation | 5℃ 5 | Power Supply | 3P AC 380 50HZ/80HZ 6 | Compressor | Dual compressor, made in Japan Daikin (joint venture) 7 | Outlet Water Pressure | 4–8 kg adjustable 8 | Outlet Water Flow Rate | 6 m³/h 9 | External Circulation Pump | Rated Power 1.1 kW, Rated Current 1.5 A 10 | Refrigerant Charge | 11 kg, refrigerant F22 11 | Fan Power | 85W×2 12 | Total Input Power | 13.5 kW 13 | Weight | 450 kg Features and Functions: - Temperature measurement and control range: -4.9℃—94.9℃; - Display resolution up to 0.1℃; - Control sensitivity: 0.1℃; - Offset range: -0.5℃—10℃; - Uses AC 220V power supply; - Instrument operating environment: relative humidity ≤90% RH, temperature 0–45℃, non-corrosive and waterproof.
等离子喷涂设备
氧化铬喷涂机
Product Description
SX-80 Plasma spraying equipment
Introduction to Plasma Spraying Technology
Plasma spraying is a thermal spraying process that uses a plasma arc as the heat source and primarily employs spray powder materials.
① Steps of plasma spraying
During plasma spraying, a direct-current arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the introduced working gas into a high-temperature plasma, which is then ejected from the nozzle to form a plasma jet. Powder particles are fed into the plasma jet by a powder-feeding gas, where they are melted, accelerated, and sprayed onto the substrate material to form a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used.
② Characteristics of plasma spraying
(1) Capable of spraying a variety of coating materials, especially high-melting-point and refractory materials such as refractory metals, ceramics, metal-ceramics, and other special functional materials;
(2) Inert gases can be selected as the working medium to reduce oxidative reactions of spray particles during their flight.
(3) The coating exhibits high bonding strength and low porosity; fine coatings can be prepared by controlling process parameters.
③ Main equipment for plasma spraying
Including the spray gun, powder feeding mechanism, rectifier current, air supply system, water cooling system, and control system.
General Layout of Plasma Spraying Equipment
2 Introduction to the Configuration of the SX-80 Plasma Spraying Equipment
The SX-80 plasma coating equipment was developed successfully based on the introduction and absorption of plasma spraying equipment such as the PT-A3000 and METCO-9M. Its overall technical level is comparable to that of the METCO-9M. The equipment consists of the following systems: ① main power supply ② control cabinet ③ transfer box ④ powder feeder ⑤ spray gun ⑥ heat exchanger and piping connections, among others.
(1) SX-80 Main Power Supply
Main power supply
Silicon-controlled rectifier with a maximum input power of 85 kW and a duty cycle of 100%. The maximum output power is 80 kW, and it can operate normally under grid voltage fluctuations of ±15%. The current fluctuation range is ±1% to ±2%.
External dimensions: 770 mm (length) × 670 mm (width) × 1430 mm (height)
Weight: approximately 1000 kg
SX-80 Plasma Main Power Supply:
It provides a DC power supply for the spray gun, features intelligent module control, employs modular rectification, and utilizes soft arc starting, enabling continuous 24-hour operation without any failures. It is currently the most advanced plasma power source available in China.
Main Power Parameter Table for the SX-80 Plasma Spraying System
|
Serial number |
Project |
Basic Parameters |
|
1 |
Input power |
3P AC 380V, 50Hz/60Hz |
|
2 |
Rated output power |
80KW |
|
3 |
No-load maximum voltage |
DC125V |
|
4 |
Operating current |
10-1000A |
|
5 |
Operating voltage |
30-100V |
|
6 |
Power characteristics |
Constant current source |
|
7 |
Current accuracy |
<1% |
|
8 |
Load rate |
90% |
|
9 |
Power supply external dimensions |
770×670×1430mm |
|
10 |
Weight |
1000Kg |
(2) SX-80 Adapter Box
The transfer center of the entire spraying system connects the power supply, control cabinet, heat exchanger, and spray gun together. The enclosure is equipped with high-frequency ignition, water circuit, and air circuit alarm devices. The enclosure is mobile, and the length of the water cable is 5 meters (standard model).
External dimensions: 615 mm (length) × 470 mm (width) × 300 mm (height)
Weight: Approximately 125 kg
Transfer box
The plasma equipment mixes water and electricity before delivering the mixture to the torch, while simultaneously providing the high-frequency pulse voltage required for arc initiation and monitoring the return-water temperature and cooling-water pressure of the torch. It is lightweight, flexible, and easy to tow. It features excellent arc-starting performance and reduces the instantaneous current surge during nozzle arc initiation.
Parameter Table for the SX-80 Plasma Spraying System Adapter Box
|
Serial number |
Project |
Basic Parameters |
|
1 |
Input voltage |
AC 220V, 50Hz/80Hz |
|
2 |
Rated power |
250W |
|
3 |
Control method |
External control |
|
4 |
Output high-frequency voltage |
AC2500~3000 |
|
5 |
External dimensions |
615×470×300mm |
|
6 |
Weight |
125 Kg |
(3) SX-80 Control Cabinet
The control center for the entire equipment set. Single-phase 220V, 1kW; equipped with a float flowmeter; features digital displays for current and voltage; offers three operating modes: manual, automatic, and economy mode.
Equipped with alarm or fault indication functions, the general alarm conditions are as follows:
When the main and auxiliary air pressures are less than 0.3 MPa or the main air flow rate is less than 30 L/min;
When the water temperature is greater than 50℃ or the water flow rate is less than 8 L/min.
External dimensions: 725 mm (length) × 620 mm (width) × 1750 mm (height)
Weight: Approximately 265 kg
Control cabinet
It is used for the regulation and control of water, electricity, gas, and powder. It can monitor the entire system, allowing users to directly view system parameters—such as voltage and current—from the control cabinet. If either the electrical or gas supply in the system fails to meet the required standards, the system will automatically trigger an alarm to alert the user to make the necessary adjustments. By adjusting the current and voltage on the control panel, users can regulate the temperature of the plasma arc. Additionally, by fine-tuning the primary and secondary gas flows on the control panel, users can precisely control the gas flow rate and gas mixture ratio, thereby altering the length of the plasma arc and the velocity of the flame jet, ultimately influencing the velocity of the powder particles.
Parameter Table for the SX-80 Plasma Spraying System Control Cabinet
|
Serial number |
Project |
Basic Parameters |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
1 |
Input power |
AC 220V, 50Hz/80Hz |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
2 |
Input power |
300W |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
3 |
Control type |
PLC control + relay |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
4 |
Prev: Plasma Spraying Ceramic Coating Process Next: Properties and Application Ranges of Four Common Ceramic Spraying Materials Online Quotation Related products Spraying equipment SPRAY EQUIPMENT
Chromium oxide spraying equipmentIntroduction to Plasma Spraying Technology: The SX-80 Plasma Spraying Equipment Plasma spraying is a thermal spraying process that uses a plasma arc as its heat source and relies primarily on sprayed powder materials. ① Steps of Plasma Spraying During plasma spraying, a DC arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the working gas introduced into the system, turning it into a high-temperature plasma that is ejected from the nozzle, forming a plasma flame. Powder particles are fed into the flame by a carrier gas, where they melt, accelerate, and are sprayed onto the substrate material, forming a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used. ② Characteristics of Plasma Spraying (1) It can spray a wide variety of coating materials, especially refractory materials with high melting points, such as refractory metals, ceramics, metal-ceramics, and other special functional materials. (2) Inert gases can be selected as the working medium, reducing oxidation reactions of the sprayed particles during flight. (3) The coating exhibits high bonding strength and low porosity; fine coatings can be produced by precisely controlling process parameters. ③ The main components of plasma spraying equipment include the spray gun, powder feeding mechanism, rectifier power supply, gas supply system, water cooling system, and control system. General Layout of Plasma Spraying Equipment 2. Configuration of the SX-80 Plasma Spraying Equipment The SX-80 plasma spraying equipment was developed based on the introduction and absorption of PT-A3000 and METCO-9M plasma spraying equipment. Its overall performance level is comparable to that of the METCO-9M. The equipment includes: ① Main Power Supply ② Control Cabinet ③ Transfer Box ④ Powder Feeder ⑤ Spray Gun ⑥ Heat Exchanger and Piping Connections (I) SX-80 Main Power Supply The main power supply is a thyristor-controlled rectifier with a maximum input power of 85 kW and a duty cycle of 100%. The maximum output power is 80 kW, and it can operate normally under grid voltage fluctuations of ±15%. Current fluctuation range: ±1% to ±2%. Dimensions: 770 mm (length) × 670 mm (width) × 1430 mm (height); Weight: approximately 1000 kg. The SX-80 plasma main power supply provides DC power to the spray gun, featuring intelligent module control, modular rectification, soft arc starting, and capable of continuous 24-hour operation without failure. It is currently the most advanced plasma power supply in China. SX-80 Plasma Spraying System Main Power Supply Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Power | 3P AC 380V, 50Hz/60Hz 2 | Rated Output Power | 80 kW 3 | No-load Maximum Voltage | DC 125V 4 | Working Current | 10–1000 A 5 | Working Voltage | 30–100 V 6 | Power Supply Characteristic | Constant Current Source 7 | Current Accuracy | <1% 8 | Load Rate | 90% 9 | Power Supply External Dimensions | 770×670×1430 mm 10 | Weight | 1000 kg (II) SX-80 Transfer Box The transfer box serves as the central connection point for the entire spraying system, linking the power supply, control cabinet, heat exchanger, and spray gun. It is equipped with high-frequency ignition, water circuit, and gas circuit alarm devices. The box is movable, and the water cable length is 5 m (standard type). Dimensions: 615 mm (length) × 470 mm (width) × 300 mm (height); Weight: approximately 125 kg. The transfer box delivers the combined water and electricity from the plasma equipment to the spray gun, while also providing the high-frequency pulse voltage required for gun ignition and detecting the return water temperature and cooling water pressure. It is lightweight, flexible, and easy to move. It offers excellent arc-starting performance and reduces the instantaneous current surge when the nozzle starts the arc. SX-80 Plasma Spraying System Transfer Box Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Voltage | AC 220V, 50Hz/80Hz 2 | Rated Power | 250 W 3 | Control Mode | External Control 4 | Output High-Frequency Voltage | AC 2500–3000 5 | External Dimensions | 615×470×300 mm 6 | Weight | 125 kg (III) SX-80 Control Cabinet The control cabinet is the central control unit for the entire equipment. It operates on single-phase 220V, 1 kW, and is equipped with a float flow meter, digital displays for current and voltage, and offers manual, automatic, and economical operating modes. It features alarm and fault display functions. Common alarm conditions include: - When the main or auxiliary gas pressure is below 0.3 MPa or the main gas flow rate is below 30 L/min; - When the water temperature exceeds 50°C or the water flow rate is below 8 L/min. Dimensions: 725 mm (length) × 620 mm (width) × 1750 mm (height); Weight: approximately 265 kg. The control cabinet is used for regulating and controlling water, electricity, gas, and powder. It monitors the entire system, allowing users to directly view system parameters such as voltage and current levels. If the electrical or gas parameters fail to meet requirements, the system automatically alarms to prompt the user to make adjustments. By adjusting the current and voltage on the control panel, the temperature of the plasma arc can be regulated. Users can also adjust the main and secondary gas flows and their ratios via the control panel to change the length of the plasma arc and the velocity of the flame, thereby influencing the speed of the powder particles. SX-80 Plasma Spraying System Control Cabinet Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Input Power | AC 220V, 50Hz/80Hz 2 | Input Power | 300 W 3 | Control Type | PLC Control + Relay 4 | Main Gas Type and Pressure | Argon, Nitrogen 0.6–0.8 MPa 5 | Maximum Main Gas Consumption | 2 m³/h 6 | Secondary Gas Type and Pressure | Hydrogen, Helium 0.25–0.4 MPa 7 | Air and Pressure | Dry 0.5 MPa 8 | Gas Usage | Argon, Argon+Hydrogen, Nitrogen, Nitrogen+Hydrogen 9 | Control Cabinet External Dimensions | 725×620×1750 mm 10 | Total Weight of Control Cabinet | 265 kg (IV) SX-80 Powder Feeder One single-cylinder powder feeder is provided. The particle size range for powder delivery is 5–200 μm, and the repeatability error is less than ±1%. Two cylinders can deliver powder simultaneously, with a feeding rate ranging from 8 to 250 g/min. Dimensions: 560 mm (length) × 530 mm (width) × 1130 mm (height); Weight: approximately 138 kg. The SX-80 plasma powder feeder is a device used to store spraying powder and deliver it to the spray gun according to process requirements. It uses the main gas from the spray gun as the carrier gas. The powder is transported through the rotation of the powder feeding scraper to the outlet of the feeder, and then exits the feeder along with the gas pressure into the spray gun. The potentiometer on the control cabinet panel can adjust the speed of powder delivery. SX-80 Plasma Spraying System Powder Feeder Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Powder Delivery Method | Scraper Air Pressure Type 2 | Single-Cylinder (Dual-Cylinder) Capacity | 3.0 (6.0) L 3 | Powder Carrier Gas | Argon or Nitrogen 4 | Powder Carrier Gas Pressure | 0.45–0.6 MPa 5 | Powder Delivery Speed | 8–250 g/min 6 | Powder Delivery Accuracy | ±1% 7 | Powder Carrier Gas Flow Rate | 300–700 L/h 8 | Powder Feeder External Dimensions | 560×530×1130 mm 9 | Powder Feeder Weight | 138 kg (V) SX-80 Spray Gun An imitation of the METCO9MB spray gun is available. The main working gas is argon or nitrogen, and the auxiliary gas is hydrogen. The working current ranges from 100 to 800 A, and the working voltage is 50–75 V for Ar+H2 and 50–80 V for N2+H2. The spray gun is shown in the figure below, and comes with the following accessories: nozzle, powder and cooling air jet holder, water cable, electrode tip, insulator, sealing ring, and specialized tools. The SX-80 plasma machine is equipped with an SX-80 spray gun, which is designed for industrial thermal spraying operations. Its maximum output power reaches 80 kW. Due to its high rated power, this gun can handle high powder feed rates in production environments, shortening spraying time and reducing processing costs. Its standard structure allows for quick hardware replacement. Various nozzles, electrodes, and powder ports are available to accommodate different material requirements. SX-80 Plasma Spraying System Spray Gun Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Rated Output Power | 80 kW 2 | Rated Current | 10–1000 A 3 | Working Voltage | 30–100 V 4 | External Dimensions | 80×75×190 mm 5 | Weight | 3.5 kg (VI) SX-80 Heat Exchanger (Refrigerator) The SX-80 heat exchanger, also known as a refrigerator or chiller, is primarily used to cool distilled water passing through the spray gun. After being cooled by the refrigeration principle, the water is circulated back into the spray gun at a lower temperature, effectively cooling the gun and maintaining its optimal working temperature, thus extending the nozzle’s lifespan. The dual-compressor drive reduces the overall machine volume and increases your workspace. SX-80 Plasma Heat Exchanger Parameter Table No. | Item | Basic Parameters --- | --- | --- 1 | Unit External Dimensions | 2000×780×1910 (mm) 2 | Circulating Water Tank Capacity | 250 kg 3 | Cooling Capacity | 35 kW 4 | Outlet Water Temperature Fluctuation | 5℃ 5 | Power Supply | 3P AC 380 50HZ/80HZ 6 | Compressor | Dual compressor, made in Japan Daikin (joint venture) 7 | Outlet Water Pressure | 4–8 kg adjustable 8 | Outlet Water Flow Rate | 6 m³/h 9 | External Circulation Pump | Rated Power 1.1 kW, Rated Current 1.5 A 10 | Refrigerant Charge | 11 kg, refrigerant F22 11 | Fan Power | 85W×2 12 | Total Input Power | 13.5 kW 13 | Weight | 450 kg Features and Functions: - Temperature measurement and control range: -4.9℃—94.9℃; - Display resolution up to 0.1℃; - Control sensitivity: 0.1℃; - Offset range: -0.5℃—10℃; - Uses AC 220V power supply; - Instrument operating environment: relative humidity ≤90% RH, temperature 0–45℃, non-corrosive and waterproof.
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等离子喷涂设备 氧化铬喷涂机 Product Description SX-80 Plasma spraying equipment Introduction to Plasma Spraying Technology Plasma spraying is a thermal spraying process that uses a plasma arc as the heat source and primarily employs spray powder materials. ① Steps of plasma spraying During plasma spraying, a direct-current arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the introduced working gas into a high-temperature plasma, which is then ejected from the nozzle to form a plasma jet. Powder particles are fed into the plasma jet by a powder-feeding gas, where they are melted, accelerated, and sprayed onto the substrate material to form a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used. ② Characteristics of plasma spraying (1) Capable of spraying a variety of coating materials, especially high-melting-point and refractory materials such as refractory metals, ceramics, metal-ceramics, and other special functional materials; (2) Inert gases can be selected as the working medium to reduce oxidative reactions of spray particles during their flight. (3) The coating exhibits high bonding strength and low porosity; fine coatings can be prepared by controlling process parameters. ③ Main equipment for plasma spraying Including the spray gun, powder feeding mechanism, rectifier current, air supply system, water cooling system, and control system.
General Layout of Plasma Spraying Equipment
The SX-80 plasma coating equipment was developed successfully based on the introduction and absorption of plasma spraying equipment such as the PT-A3000 and METCO-9M. Its overall technical level is comparable to that of the METCO-9M. The equipment consists of the following systems: ① main power supply ② control cabinet ③ transfer box ④ powder feeder ⑤ spray gun ⑥ heat exchanger and piping connections, among others. (1) SX-80 Main Power Supply
Main power supply Silicon-controlled rectifier with a maximum input power of 85 kW and a duty cycle of 100%. The maximum output power is 80 kW, and it can operate normally under grid voltage fluctuations of ±15%. The current fluctuation range is ±1% to ±2%. External dimensions: 770 mm (length) × 670 mm (width) × 1430 mm (height) Weight: approximately 1000 kg SX-80 Plasma Main Power Supply: It provides a DC power supply for the spray gun, features intelligent module control, employs modular rectification, and utilizes soft arc starting, enabling continuous 24-hour operation without any failures. It is currently the most advanced plasma power source available in China.
Main Power Parameter Table for the SX-80 Plasma Spraying System
(2) SX-80 Adapter Box The transfer center of the entire spraying system connects the power supply, control cabinet, heat exchanger, and spray gun together. The enclosure is equipped with high-frequency ignition, water circuit, and air circuit alarm devices. The enclosure is mobile, and the length of the water cable is 5 meters (standard model). External dimensions: 615 mm (length) × 470 mm (width) × 300 mm (height) Weight: Approximately 125 kg The plasma equipment mixes water and electricity before delivering the mixture to the torch, while simultaneously providing the high-frequency pulse voltage required for arc initiation and monitoring the return-water temperature and cooling-water pressure of the torch. It is lightweight, flexible, and easy to tow. It features excellent arc-starting performance and reduces the instantaneous current surge during nozzle arc initiation. Parameter Table for the SX-80 Plasma Spraying System Adapter Box
(3) SX-80 Control Cabinet The control center for the entire equipment set. Single-phase 220V, 1kW; equipped with a float flowmeter; features digital displays for current and voltage; offers three operating modes: manual, automatic, and economy mode. Equipped with alarm or fault indication functions, the general alarm conditions are as follows: When the main and auxiliary air pressures are less than 0.3 MPa or the main air flow rate is less than 30 L/min; When the water temperature is greater than 50℃ or the water flow rate is less than 8 L/min. External dimensions: 725 mm (length) × 620 mm (width) × 1750 mm (height) Weight: Approximately 265 kg
Control cabinet It is used for the regulation and control of water, electricity, gas, and powder. It can monitor the entire system, allowing users to directly view system parameters—such as voltage and current—from the control cabinet. If either the electrical or gas supply in the system fails to meet the required standards, the system will automatically trigger an alarm to alert the user to make the necessary adjustments. By adjusting the current and voltage on the control panel, users can regulate the temperature of the plasma arc. Additionally, by fine-tuning the primary and secondary gas flows on the control panel, users can precisely control the gas flow rate and gas mixture ratio, thereby altering the length of the plasma arc and the velocity of the flame jet, ultimately influencing the velocity of the powder particles. Parameter Table for the SX-80 Plasma Spraying System Control Cabinet
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