Zhengzhou Lijia HV-80D Inner Hole Spray Gun is an advanced thermal spraying equipment, which is suitable for internal hole surface treatment. Its working principle is that oxygen and kerosene are burned in the combustion chamber to produce a high-temperature flame, and the metal, ceramic and other powders are sent to the flame to melt, and then sprayed to the inner hole of the workpiece at high speed through a special nozzle, and the coating performance is controlled by adjusting the parameters and material selection. The gun body is made of high-strength aluminum alloy, compact structure, stable connection of components, unique and replaceable nozzles, advanced powder feeding system, adjustable powder feeding volume, and circulating water cooling temperature control of the cooling system.
1. The use of oxygen and kerosene combustion to produce a high-temperature flame, accurately melt metal, ceramics and other powders, and high-speed injection to the inner hole of the workpiece, through fine control of fuel flow, spraying distance and other key parameters, combined with reasonable material selection, can accurately control the coating performance, to ensure that different needs are met.
2. The gun body is made of high-strength aluminum alloy, which has both light weight, high strength and good heat dissipation, compact internal structure, stable connection of components, and ensures long-term stable work.
3. The unique nozzle not only helps the material to fully absorb heat and spray accurately at high speed, but also can change the caliber and shape as needed, which has strong applicability. The advanced powder feeding system provides uniform and stable feeding, the powder feeding volume is accurately adjustable, and the circulating water cooling system accurately controls the temperature, effectively reducing the risk of overheating, improving stability and prolonging life.
Kerosene and oxygen as fuel for the spray gun (hydrogen and nitrogen can also be added) are safe and suitable for more powder
The flame direction of the nozzle is designed to be angled, the body of the gun body does not need to be tilted, and the flame of the gun can be directly perpendicular to the internal surface of the workpiece.
The main body of the spray gun can be made of light and high-temperature resistant material as an extension rod, and the extension rod can be customized ranging from 1-3 meters
The spray gun is equipped with a full closed-loop control system and adopts a mass flow controller to ensure the stability of spraying.
Project | Parameter
| |
HV-80D kerosene supersonic flame bore gun | Recommended spray bore diameter | ≥150mm |
Barrel length | Standard 1000mm, customizable up to 3000mm in | |
Flame speed | 2000m/s | |
Flame temperature | 3000℃ | |
Spray rate | 2-3 kg/h(Tungsten carbide) | |
Coating porosity | ≤1% | |
Coating bond strength | >60Mpa | |
Spray powder particle size | 2~10μm,5-15μm | |
Cooling method | Water cooling | |
Cooling water flow | 1.6m³/h |
1.Machinery manufacturing: Handle the inner hole of engine block, crankshaft and other parts to improve wear resistance, corrosion resistance and high temperature resistance, and ensure mechanical properties.
2.Automobile manufacturing: Spraying the inner holes of key engine parts to enhance the power and durability of the vehicle.
3.Aerospace: It is used for the inner bore of aero engine blades to meet the performance requirements of high temperature resistance and corrosion resistance under extreme working conditions.
4.Petrochemical: Spraying the inner hole of the reactor and pipeline to ensure the safety and stability of production, and improve the corrosion resistance and wear resistance.
5.Medical devices: Handle syringes and other internal holes to improve biocompatibility and corrosion resistance.
6.Mold manufacturing: Improve the demoulding, wear resistance and anti-corrosion performance of the mold inner hole, prolong the life of the mold, and improve the production efficiency and product quality.
7.Hydraulics and pneumatics: Spray cylinders and cylinder bores to reduce friction and improve sealing and running performance.
1.Equipment inspection: Carefully check the appearance of the spray gun to ensure that there is no damage or deformation, and that the parts are firmly connected. Check whether the powder feeding system is smooth, whether there is any blockage, and the spraying material in the powder barrel should be sufficient and free of moisture and agglomeration. Check the cooling system to ensure that the coolant is sufficient, the water pipes are free of leakage and bending, and the circulating pump is operating normally.
2.Material preparation: According to the spraying requirements, select suitable spraying materials, such as metal powder, ceramic powder, etc. with specific materials and particle sizes. According to the process requirements, the spraying material is evenly mixed with an appropriate amount of additives (if any) to ensure the stable performance of the material.
3.Environmental Preparation: The operating environment should be well ventilated to avoid dust accumulation, reduce the risk of explosion, and ensure the respiratory health of operators. Clean up the work area, remove extraneous debris, keep the site tidy, and prevent foreign objects from entering the spray gun or interfering with the spraying process.
4.Connecting pipelines: The oxygen and fuel (such as kerosene) delivery pipes of the spray gun are closely connected with the corresponding gas source and fuel source respectively to ensure that the interface is well sealed and there is no leakage. Connect the powder feeding pipe to make it reliably connected with the powder feeding device to ensure the smooth powder conveying path. Connect the cooling water pipe to ensure that the cooling water circulation path is normal.
Q1:What preparations should be made before using this spray gun for the first time?
A:Before use, the appearance of the spray gun should be comprehensively inspected to see if there is any damage or deformation, and whether the parts are firmly connected. Confirm that the powder feeding system is smooth, and the amount of spraying material in the powder barrel is sufficient and there is no moisture and agglomeration. Check the cooling system to ensure that the coolant is sufficient, the water pipe is free of leakage and bending, and the circulating pump can operate normally. According to the spraying requirements, select the appropriate spraying materials, and mix them evenly with appropriate additives (if any) according to the process requirements. At the same time, ensure that the operating environment is well ventilated, clean the operating area, and remove irrelevant debris.
Q2:What safety protective equipment do I need to wear when operating the spray gun?
A:Operators must wear protective glasses, masks, high-temperature resistant gloves, etc., to prevent high-temperature flames and splashing powders from causing injury to the body.
Q3 How to clean and maintain the spray gun after operation?
A:Turn off the spray gun, powder feeding device, cooling system, air source and power supply in time. The spray gun is cleaned to remove residual spray material and dirt, especially in the nozzle area, which can be carefully cleaned with special cleaning agents and tools to prevent clogging. Carry out comprehensive maintenance of the equipment on a regular basis, check the wear and tear of each component, and replace the wearing parts in time.