Green Project is able to propose a wide range of marking machines for the hot cast products; they are based on the SPRAY technology, consisting of a movable nozzle which sprays a special metal powder or melted wire to write the symbols, which appear bright and very well defined, as handwritten. The nozzle is moved by a robot or by a X-Y plotter.
Typical applications are for slabs, blooms, billets up to 1200°C, key features are the excellent reliability and readability of the characters also from long distance (i.e. from the crane cabin).
If scale is present on the surface, before marking it must be removed by a descaling unit; we have mechanical and water jet solutions available.
SPRAY can be supplied in two different solutions:
• Powder spray, using a special metal powder which sticks to the metal surfaces in the range 450°C - 1200°C
• Metal (wire) spray, using a special metal wire (Aluminium, brass, steel, etc) which is melted in drops and sprayed on the metal surface, sticking it firmly to the surface from ambient temperature up to 1.200°C.