6 articles in total. No sales talk here — only selection methods, parameter settings and troubleshooting steps you can follow directly.
How to set powder coating gun voltage and current on a vertical line: walk voltage up from low, read the meter, fix Faraday shielding and back ionization.
Voltage too high causes back ionization, too low leaves edges bare. Starting parameter ranges for voltage, gun distance and air pressure by workpiece type, with adjustment methods and a trial-spray verification procedure.
Don't select a gun by model number — select it by workpiece. From workpiece size, shape, daily output and powder type through to hanger grounding, six steps to decide manual or automatic, how many guns, and what voltage.
Electrostatic powder coating gun prices range from a few thousand to tens of thousands. The difference is not in the "gun" but in the configuration. This breaks down manual guns, automatic guns and complete lines so you can work out your budget.
Powder spitting and fluctuating output are the most common faults. Work through eight items from most likely to least likely — in most cases you can locate the problem within the first three steps.
Low transfer efficiency is not just a gun problem. Work through grounding, hangers, gun distance, voltage, powder and the recovery system one by one, with on-site diagnostic methods and directions for improvement.
