This article outlines a laser technique that is especially useful for treating coatings on glass moulds. In 2010, Chpolansky started to treat coatings on cast iron or bronze base metallic surfaces using a laser technique especially useful for glass moulds. The coating areas aimed at were areas in contact with hot glass (1300-1600 deg C) and more particularly (joining zone), the ring and the neck. The aim is to make these coatings on cast iron and bronze, using the laser beam technique to decrease Thermally Affected Zones (TAZ) and promote thermal properties of the part maintained. Coating is performed under three different techniques in existing prior art: Spray Gun is the traditional method, but is known to give random results; The TIG Process uses rods, but is expensive and is not adapted to mould coating; and Plasma Transferred Arc (PTA) technique, currently preferred, in spite of its lack of reproducibility.
