63. ELECTROSTATIC SPRAYING

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Used to coat an object to,

- reduce corrosion

- protect against scratching

- stop contact with air/water/chemicals/etc

- alter appearance

Electrostatic paintig methods

- increases the production rate

- reduces paint wastage

- are well suited to automation

- give good finishes

The basic process is,

- before/as the paint is sprayed, it is given a negative charge (extra electrons).

- The workpiece is positively charged, thus attracting the paint particles

- The paint is generally sprayed at the workpiece, the electrostatics even out the dispersion, and reduce wastage.