HIGH FREQUENCY PULSE RATE AND HIGH PRODUCTIVITY DETONATION SPRAY GUN

A detonation gun for thermal spraying formed by a combustion chamber (1) and a barrel (2), with entrances for fuel (5) and for oxidizer (4), one or more spark plugs (6) for detonating the fuel-oxidizer mixture and one or more injectors (7) for the introduction of the product into the barrel, the gun in the invention centers its characteristics on the incorporation of a direct injection system of the fuel and oxidizer gases into the explosion chamber, producing explosive mixtures of different compositions according to the various zones in the explosion chamber, with a constrained volume existing in this explosion chamber in which only fuel is injected in such a way that it can generate high-energy explosions, maintaining the cyclic operation of the gun. The gun also incorporates in the barrel (2-2′), one or more annular injectors (7), which allow the feeding of various products, and especially coating powder, so that it is possible to increase the number of kilograms deposited on the substrate per unit of time and, in consequence, the gun's productivity.