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Flow diagram of electrostatic spraying and advantages and disadvantages of electrostatic spraying for powder coating The electrostatic spraying process is based on the following technical principles: Corona discharge appears on the workpiece, and this appearance is used to encourage powder coating to adhere to the workpiece. The procedure is as follows: compressed air gas is used to feed the powder coating equipment into the spray gun from the powder supply system, and the high voltage generated by the high voltage electrostati... more