Wednesday, 29 December 2021

Metal spraying

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.


 The metal spraying is done by melting a metal in an oxy-gas flame

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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