FLAME SPRAYING OF METALS Available to Purchase

Of the three available metal‐spraying techniques, only the powder and wire processes need be considered as practicable methods for combating corrosion. The third technique using molten metal requires elaborate equipment and is now only important as a means of producing metal powders. A metallising pistol is a device for passing metal in the form of powder or wire through the centre of an oxy/fuel gas flame, where it is melted, picked up by a stream of air at high velocity and propelled on to a suitably prepared surface to form a coating. The powder and wire guns produced by the Schori division of F.W. Berk & Co. represent a fair selection of the equipment used in the metal‐spraying process.