HV-80S Gun

As the core of supersonic flame spraying equipment, Zhengzhou Lijia uses HV-80S kerosene supersonic flame spray gun. The spray gun is made of the American Praxair 5220 spray gun design structure innovation and optimization, the spray gun is widely used by users around the world today and has been proven to be the most stable and reliable universal kerosene supersonic flame spray gun, the spray gun has hundreds of customers in China, has been mature in the thermal spraying industry.

The HV-80S gun has a combustion chamber pressure of 10 Bar/150 psi, which is higher than other gas-fueled supersonic guns with normal pressures of 2 -4 bar/30 - 60 psi, resulting in a higher flame velocity and particle velocity, resulting in a more wear-resistant, denser coating.

After mixing with oxygen, kerosene enters the combustion chamber through the coaxial fuel line to form a stable, clean and uniform flame. The pressure value of the combustion chamber can be detected, which provides the operator with additional information for better control of the combustion process as well as the combustion chamber pressure. Since the combustion chamber pressure is directly proportional to the flight speed of the powder particles, it is important to monitor the pressure value of the combustion chamber. Monitoring the pressure value of the combustion chamber and the flow value of the gas can provide a cross-reference to the spraying process, so that the best process can be developed and the best coating can be dispensed.

The unique design of the HV-80S gun allows it to feed powder at low pressure in the feeder, which greatly improves process stability and avoids flammable gas backfire into the feeder funnel.

Pictured: HV-80S supersonic flame spray gun

Features and technical parameters of the HV-80S kerosene supersonic flamespray gun

• Patented kerosene physicochemical nozzle and combustion chamber, complete combustion, no carbon deposit;

• The flame flow speed is stable and higher than that of other brands, forming a more powerful jet force;

• The fuel is aviation kerosene, and the combustible gas is oxygen. The combustion temperature is high, and the supersonic flame flow is 7 times through the action of Laval tube;

• Unique dual-channel waterway design, sufficient cooling, can work continuously for 24 hours.

1.Machinery manufacturing field: it can be used for surface strengthening and repair of various mechanical parts, such as spraying and repairing worn shaft parts to restore their size and accuracy; Spray the surface of the mold to improve the wear resistance, corrosion resistance and demoulding performance of the mold, prolong the service life of the mold, improve the wear resistance and corrosion resistance of mechanical parts, reduce friction loss, and improve the reliability and operation efficiency of the equipment.

2.Aerospace field: It can be used for the preparation of surface coating for key components such as aircraft engine blades and landing gear, enhance the high temperature resistance, oxidation resistance and corrosion resistance of components, ensure the safe and reliable operation of aerospace components in extreme environments, and improve the service life and performance stability of components.

3.Energy and electric power: In thermal power, hydropower, wind power and other power generation equipment, boiler pipes, steam turbine blades, generator rotors and other components can be sprayed and protected to prevent parts from being damaged by high temperature, high pressure, corrosive medium and other factors, improve the operation efficiency and stability of power generation equipment, and reduce maintenance costs and downtime.

4.Petrochemical field: For the reactors, pipelines, valves, etc. in petrochemical equipment, by spraying corrosion-resistant and wear-resistant coatings, it can effectively resist the erosion and erosion of chemical media, ensure the long-term stable operation of equipment, reduce equipment maintenance and replacement costs, and improve the safety and economy of petrochemical production.

5.Automobile industry: It can be used for the surface treatment of automobile engine blocks, pistons, crankshafts and other parts, improve the wear resistance, friction reduction and heat dissipation performance of parts, improve the power output and fuel economy of automobile engines, prolong the service life of automobile parts, and reduce the maintenance rate and use cost of automobiles.

Product Operate Guide     

1.Check the equipment: ensure that the spray gun and related equipment are intact, the parts are tightly connected, and there are no loosening, leakage and other problems. Check whether the powder feeding system, ignition system, gas and oxygen supply system, etc. are working properly.

2.Connect the air supply and power supply: Connect the air inlet of the spray gun to a filtered and pressure-regulated compressed air source to ensure that the air pressure is stable and meets the requirements of the spray gun. At the same time, connect the power supply of the spray gun to ensure good grounding to ensure the safety of operation.

3.Installation of the powder tank: Select the appropriate powder material according to your needs and load it into the powder tank. Note that the particle size, fluidity and other parameters of the powder should meet the requirements of the use of the spray gun, and the powder should be dry and free of impurities.

4.Wear protective equipment: Operators should wear protective glasses, masks, gloves and other protective equipment to prevent damage to the body caused by dust and high temperature generated during the spraying process.

Q: What are the key points that need to be paid special attention to when using the HV-80S gun for the first time? 

A: First of all, it is necessary to ensure that the system is connected correctly and there is no leakage, and the low-pressure and small-flow test spray is carried out during debugging, and the parameters are gradually adjusted. During the operation, it is necessary to keep the spray gun perpendicular to the workpiece, control the spraying distance and speed, and pay attention to the state of the flame and powder at the same time, and stop the machine for inspection in time if there is any abnormality. 

Q: What should I do if the powder clogs during the use of the spray gun? 

A: Close all valves of the spray gun first and stop the spraying operation. Then check the powder tank for agglomeration or impurities, clean the tank and powder feeding pipe. If the nozzle is clogged, it can be carefully cleaned with a special tool and replaced if necessary. 

Q: What are the wearing parts of the spray gun? How often does it take to replace? 

A: Common wearing parts include nozzles, powder feeding tubes, igniters, etc. The replacement cycle of the nozzle and feed tube depends on the frequency of use and the abrasive nature of the spray material, and may need to be replaced in 200 - 300 hours in the case of frequent use. If the ignition has problems such as ignition difficulties, it also needs to be checked and replaced in time.