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  • Attention should be paid to the safety of high-voltage static electricity in electrostatic powder coating
  • 2018/6/21 Reading frequency:[3302]
  • The main coating method for powder coatings is the electrostatic powder coating method, which uses high-voltage static electricity with a voltage of 30-100kV. The voltage is very high, but the current is very small. Generally, the current that damages human organ is 5mA, while the current of the spray gun is 0.7mA, which is safe for human body. Some people are sensitive to high voltage electrostatic induction. When they touch them, they will obviously stimulate the body. Being frightened will cause secondary disasters and accidents. To avoid and prevent the occurrence of such accidents, attention should be paid to the following issues
      
    When spraying, a high-pressure generator should be installed inside the spray gun. It is not advisable to use high-voltage cables to connect the spray gun and the spray gun of the high-voltage generator. If it is necessary to use this type of high-voltage cable spray gun, measures must be taken to prevent cable leakage and discharge problems, in order to avoid accidents
      
    The voltage used should be controlled below 9WV, exceeding this voltage will be detrimental to the human body's home immunity. In addition, the short-circuit current should be controlled below 0.7 μ A
      
    In order to eliminate static charges as soon as possible, during manual spraying, the spray gun should immediately contact the grounding conductor after use to release residual charges in a timely manner. At the same time, the human body should not be insulated from the ground, and the charges on the human body should be eliminated in a timely manner. The distance between the coated object and the nozzle should not be too close, and should be maintained at least 10cm to prevent short circuits from generating electric sparks