Electrostatic Spraying Process

Electrostatic spray coating consists of depositing electrically charged powder particles on the metal surface at ambient temperature. The electrostatic charge is obtained by conveying the powder through a special spraying device, such as “corona” or “tribo” spray-gun.

Criteria For Choosing This Process

Rilsan® Fine Powders can be applied using the electrostatic spray process

Thickness of the part:

The process is recommended for coating parts that are up to 6 mm thick.

 

Thickness of coating desired:

The process allows controlled thickness ranging from 80 to 120 μm (Rilsan® ESY grades), and from 100 to 150 μm (Rilsan® ES grades).

 

Size of the part to be coated

There are no limits to the dimensions of the part to be coated; partial coating is possible.

 

Nature of part - surface treatment

The process is suitable for all types of conductive metal substrates capable of withstanding a temperature of 220°C without deterioration.

Advantages of Electrostatic Spraying

  • Good control over powder deposition
  • Partial coating of the part can be achieved
  • Lower temperature to fuse powder
  • Shorter time to fuse powder
  • No crosslinking risk compared to thermoset materials
  • Smaller powder stock required
  • Process may be automated

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