High Velocity Oxygen Fuel (HVOF) Thermal Spray System process uses combustion of Kerosene and liquid Oxygen mixture to melt and half-melt powder particles feeded into HVOF-torch and propel them under ultra-sonic speed to the part’s surface. Nitrogen is used as a carrier gas for powder supply

Characteristic :

1.Kerosene fuel is combustion while oxygen is accelerant for the hvof spray equipment. It is a relatively safe combustion mode;

2. The spraying gun is designed according to rocket principle. The pressure in combustion chamber can get up to 150PSI, The speed of flame is more than 2000m/s. The output power is huge and can be adjusted;

3.Radial powder feeding. This new method of injecting the powder can be preferably solubilized and uniformly distributed throughout the flame, improving the coverage efficiency and quality of the coating;

4.The system is designed to control temperature range in a certain interval of the positioning and increase the speed increased as the primary optimization target function; The coating is not only combination of high strength, high coating density, and the surface stress is a compressive stress proved by X-ray diffraction apparatus;

5.Modular design, high-performance PLC control, Safe and simple operation;

6.Particles speed is 1100 m/s by combustion (3300-3300 per feet per second). It is significantly faster than other HVOF system;

7.The thickness of coating layer is more than 1/2 inch (compressive stress coating).The hardness is higher than any other HVOF system (HVOF- 8000 type spraying WC - Co coating microscopic hardness is up to 1450, and WC - Co coating micro hardness by gas of HVOF is only around 900 ~ 1100);

8.SX-9000 HP/ HVOF spray equipment achieves high pressure HVOF coating with excellent quality, the binding strength of coating can reach 90MPa.

SX-9000 HVOF spray equipment include :

(1)  Control cabinet

(2)  PLC intelligent system

(3)  powder feeder

(4) Spraying gun

(5) Water chiller

Control cabinet & PLC intelligent system (15 inch Siemens touch screen)

Control cabinet is the control center of supersonic spray system, which uses the current high-tech and automatic controls for the entire spray system. SX-9000 HVOF spray equipment can get the advanced level of similar foreign products, superior performance, ease of operation.

Control cabinet adopts touch control terminal to put operation/ setting/display/ process and fault alarm monitoring together, simplifying panel design, easy to use, simple operation and intuitive.

Powder feeder

Powder feeder for SX9000 HVOF spray equipment is a device that used to store spray powder according to process requirements to deliver powder to the gun. Nitrogen is the powder feeding gas. Spraying powder through a gas atomization vibration so that the powder feeding device to exit, along with to send powder gas left to send powder barrels into the spray gun.

Use PLC and touch screen to set parameters to accurately control the accuracy of powder feed and powder delivery speed. The system contains two sets of independent powder feed devices, the big cans capacity is 3 liters, routinely gaunting for scraper type, with a speed of 150 grams/minute. Small cans use rotary drums, capacity is 1 liter, suitable for sending various ultra -fine powder and difficulty mixed powder.

Using a full -closed plastic steel case, it is not disturbed by the environmental temperature, humidity and other environmental interference, the panel is transparent glass door, and the powder feed state is clear at a glance.

PLC intelligent system  

Adopts current high-tech, control the entire spray system, has excellent performance, convenient operation, control cabinet adop the PLC touch -type control terminal, integrating operations, settings, help, display, process, and fault monitoring together, simplifying the panel design, easy to use, simpler and more intuitive operation.

Core component:

PLC Control: Siemens

Flow meter: Tokyo, Japan

Water chiller

Dual compressors drive can reduce the overall volume and increase your space . It mainly used to let the gun to get efficient cooling. We choose temperature controller imported with high-precision digital display to control accurately the temperature at ± 1 ℃ and range 3 ℃ ~ 45 ℃. Adopting High-efficiency condenser and evaporator, the heat exchanger effectiveness is very high, you can save power more than 35%. Schneider Electric brand of electrical accessories ensure the safe operation of the unit. There is a open stainless steel water tank insulation, long life, easy to clean and efficient maintenance.