Metal spraying is employed mostly for decorating the surfaces of
cast metal surfaces, glass, wood, asbestos and certain plastics.
Sprayed metal can be decorative like aluminium or bronze on cast
iron. Some can even be coloured.
and blowing it from the nozzle of a spray gun. In most guns the
metal in the form of wire is fed by powered rollers to the flame, but
some guns use powder or granulated metal. The figure illustrates the
metal spraying operation.
A metal spray gun may be directed by hand or mounted on a
machine.
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