Electrostatic Painting- Overview of Electrostatic Spray and Coating Technologies
Overview of Electrostatic Painting and Coating Technologies
OTSON focus on liquid electrostatic technology, we provide many liquid electrostatic equipment for customers. We also provide various nozzles and spray disks.
The principles of electrostatic charging apply equally to liquid and powder coatings. In electrostatic coating, the fluid is atomized, then negatively charged to the object, thus having a less negative
charge than the paint. Increased transfer efficiency is achieved, up to 95%. For instance, it is possible to spray paint a cyclone fence electro statically with fair transfer efficiency. Both sides of the fence can be painted from only one side due to the electrostatic attraction.
Atomized paint droplets are charged at the tip of the spray gun by a charged electrode; the electrode runs 30 to 140 kV through the paint at 0 to 225 microamperes. So, it is mean that the electrical force needed to guide paint particles to the work piece is 8,000 to 10,000 volts per inch of air.
Figure 1 . Disk Electrostatic Automatic Coating system
The principle of Turbo Rotary Atomizer (DISK) for Electrostatic Coating
Rotary atomization is a variation of electrostatic spraying that uses centrifugal force generated by discs to atomize paint, which drives it from the spray disk. In this case, the expelling effect appears between the paint carrying electrostatic and the live particles as to cause further atomization of paint and thus, forming much finer thin fog. Due to the occlusion of electrostatic, the lost paints are sucked back to the workplace in generating a kind of surrounding electrostatic effect and the over spraying phenomenon is thus minimized. In this way, the atomization of this method isexcellent as is the transfer efficiency. This method also can be used with paints of different viscosity.Therefore the machine has achieved the purpose of electrostatic coating.
Application
●Small parts
●Bicycle
●Application
●Small parts
●Bicycle
●Computer Housing
●Stationeries
●Wooden Furniture
●Hardware
●Lockers
●Freezers
●Iron Railing
●Display Cases
In using the liquid electrostatic spray gun , the high compress air tends to throw the paint away when the paint passes through the special nozzle, the droplets pick up the charge from an electrically charged electrode at the tip of the gun by charged electrode. The charged particles are given their initial momentum from the fluid pressure/air pressure In this case, the expelling effect appears between the paint carrying electrostatic and the live particles as to cause further atomization of paint and thus, forming much finer thin fog. Due to the occlusion of electrostatic, the lost paints are sucked back to the workplace in generating a kind of surrounding electrostatic effect and the over spraying phenomenon is thus minimized. In this way, the machine has achieved the purpose of electrostatic coating.
OTSON focus on liquid electrostatic technology, we provide four liquid electrostatic equipments for customers. We also provide various nozzles and spray disks.
Improvements in transfer efficiency can lead to less paint waste and lower emissions of VOCs. Transfer efficiency depends on a large number of parameters. Some of these parameters are un- der the control of the operator, while others are not. For example, the Spray technology .We can see the chart that why electrostatic is better than others
Chart 1.1 Transfer efficiency of different Spray Technologies
In the case, our products transfer efficiencies range from 70 % to 95 %( normal case), it means that you can save your money in paint cost. Meanwhile; Excellent edge coverage is achieved be- cause electrons are attracted more strongly to edges than to flat surfaces, the attractive forces of electrostatics will to some extent draw paint droplets around to the back side of the parts, a phe- nomenon called wraparound or wrap.As for coating thickness issue, it forms an electrically insulat- ing layer. Additional paint droplets are attracted most strongly to areas on the part where ground- ing is best, that is, the spots where paint is thinnest, result in a more even film thickness.
The OTSON DISK Electrostatic Spray System and Manual Liquid Electrostatic Spray Gun can significantly improve the spraying quality and production while reducing the paint consumption, the waste discharge and the maintenance cost. Because of the highly atomized live paint grains, the film is uniformly and smoothly coated on the workplace which has reduced the orange tissue effect and improved the coating layer quality.
ROI ( Return of Investment ) for Using DISK Electrostatic Coating Equipment in Bicycle Spray Painting Application.
Working Hours: 8 hours / per day Production Conditions : 1000 Bicycles / per day
Application : Bicycle Primer and Finishing Spray Painting
Disk System : 2 Disk Systems Conveyor speed : 5 meters
A. Paint cost per liter
USD 5
B. Paint consumption per week
958 liter
C. Paint cost per week (A x B)
USD 4,790
D. Efficiency saved by using OTSON Auto DISK Coating System
50%
E. Paint saved (C x D = Cost saved per week )
USD 2,395
F. Primer and Finishing (E x 2 = 2 layers painting cost saved per week )
USD 4,790
G. Total paint cost saved per year ( F x 52 weeks)
USD 249,080
Conclusion
The cost spent on buying one set of DISK electrostatic Coating Machine. With some investment,you can cut off huge costs required for paint and the technician while increasing your production and improving product quality. Abiding by human-based spirit, the ultimate goal of manufacturing the DISK Electrostatic Automatic Coating Machine is to efficiently use the energy, improve the quality and protect the environment.Our equipment of liquid electrostatic coating can significantly improve the coating quality andproduction while reducing the paints consumption, the waste discharge and the maintenance
cost. Because of the highly atomized live paint grains, the film is uniformly and smoothly coated on the workplace which has reduced the orange tissue effect and improved the coating layer quality.
DEMO VIDEO 
DEMO PICTURES 
OTS-3000 Manual Liquid Electrostatic Spray Gun Demo Pictures
