Supersonic spraying( HVOF)
HVOF is the abbreviation of High Velocity Oxy-Fuel Spraying. There is an independent combustion chamber in the supersonic machine. In this combustion chamber, the fuel is mixed with oxygen and burned.
It is a thermal spraying method that uses a supersonic nozzle to eject high-pressure and high-speed flames.
The characteristic of HVOF is that compared with other thermal spray coatings, it has fewer pores and can be coated with a denser structure, so it is widely used in products that require product coating or polishing.
However, the disadvantage is that the construction speed is significantly slower than ARC spraying, and it is not suitable for on-site painting. The parts can only be sent after the parts are sprayed at the factory.Delicate but time consuming.
Different equipment cost: the cost of arc spraying machine is relatively low, while the cost of supersonic spray equipment is relatively high.
01
Different working principle
Arc spraying machine uses arc discharge to generate high-temperature, high-energy gas plasma, which melts the spray material and sprays it onto the surface of the object to be coated. Supersonic spraying equipment accelerates powder or liquid materials to supersonic speeds by injecting gas at high speed.
02
Different spraying effects
Arc spraying machine can form a uniform, dense, wear-resistant and corrosion-resistant coating, with good performance and application prospects. Supersonic spray equipment can form a very dense coating with good anti-corrosion and wear resistance.
03
Different scopes of application
Arc spraying machine is suitable for spraying most materials, including metals, ceramics, glass, etc. Supersonic spraying equipment is more suitable for spraying high melting point materials, such as ceramics, composite materials, etc.
04
Different spraying efficiency
Arc spraying machine has a faster spraying speed and can complete a large area of painting work in a short time. Supersonic spraying equipment can complete large-area painting work in a very short time, and the spraying efficiency is higher.
