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TROUBLE SHOOTING

TROUBLE SHOOTING

Points to be remember before powder coating.

  • Make sure the powder coating substrate is free from oil, dust, welding & oxide scales (corrosion).
  • Set up the powder coating gun parameters i, e earth, airflow, voltage as recommended, this may vary depending upon the coating products.
  • Worn out of venturi tubes, may affects your powder flow, replace as per the recommendations by gun manufacturer.
  • Don’t operate gun very close to the components, maintain a gap of 10-15 inches away from it
  • Calibrate ovens every six months to maintain ideal temperatures
  • Ensure the component are free from moisture and residue of chemicals after pre-treatment process, failing may lead to powder coating peel off & craters
  • Check moisture in compressed air, which may cause pin holing
  • After every use, ensure the powders are free from contaminations and keep the cover tightly closed
  • Store powder coating powders in a cool environment, the desired temperature should be below 30`C, high humidity may cause sticking of powders together and make lumps
  • Test pre-treatment baths, like TDS of water, Ph Values before processing every time
  • Maintain powder coating thickness between 70 – 100 Microns, over baking may sometimes causes craters and poor flexibility
  • Ensure the coated component was completely cured, poor adhesion may result in poor impact and abrasion resistance

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