Gun spitting

Gun spitting is a possible cause for lumps at powder enameling plants.

Example of lumps

Possible reasons for gun spitting or puffing are :

  • Poor powder fluidization
  • Too low atomizing air pressure
  • Too long powder hoses
  • Damp powder
  • Powder buildup on gun tip
  • Irregular reciprocator movements

Author

  • Ronald Ditmer is the founder and managing director of Ditmer Trading & Consulting BV. Involved in the porcelain enameling industry since 1984 and specialized in setting-up complete enameling plants, designing enameling equipment and troubleshooting enameling processes & equipment.

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