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How Powder Coating Works

    Yellow and black Wagner powder coating gun

    Powder Coating involves a process known as electrostatic spray deposition.

    A cleaned metal workpiece, i.e. your product or component, is ‘earthed’ and given a positive charge by attaching a wire to ground it.

    A powder spray gun, using compressed air and pointed at your earthed workpiece, negatively charges pigmented powder particles as they are emitted from the gun. 

    The particles are pulled towards the positively-charged surface of the workpiece. This magnetic-like pull ensures that the particles adhere to all surfaces of the workpiece (including nooks) to provide a consistent coating. 

    The workpiece is then placed or hung in an industrial convection oven for approximately 20 minutes at 180 degrees celsius. This heat causes a chemical reaction that ‘cures’ and melts the powder to produce a beautiful finish that is tougher and more durable than conventional paint.