62. ELECTROSTATIC SPRAYING
· Used to coat an object to,
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- reduce corrosion
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- protect against scratching
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- stop contact with air/water/chemicals/etc
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- alter appearance
· Electrostatic paintig methods
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- increases the production rate
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- reduces paint wastage
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- are well suited to automation
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- give good finishes
· The basic process is,
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- before/as the paint is sprayed, it is given a negative charge (extra electrons).
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- The workpiece is positively charged, thus attracting the paint particles
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- The paint is generally sprayed at the workpiece, the electrostatics even out the dispersion, and reduce wastage.
