Temperature measurements have been registered by means of dedicated thermocouples inserted both into themould and into the metallic part. To avoid difficulties with thermocouples during the mould preheating and thetransfer to vacuum furnace, they have been fixed to the mould just after this transfer. Temperature recording hasbeen performed by means of autonomous equipment able to work in vacuum conditions.Fig. 1 shows a sketch of the prototype and one photograph took during experimental phase, where the locationof one of the thermocouples can be observed.