Detonation spraying is one of thermospraying coating techniques where for heating and accelerating of a powder material, the energy of gas explosion is used. The coating is deposited by a detonation gun (D-gun), which detonation products heat up particles of a powder up to a fusion and throw them with the velocity about 500 m/s on a part placed in front of a D-gun barrel. At collision there is a microwelding, and a powder strongly bonds with the part surface. The coating by thickness up to 10 micron is formed per a one shot. Necessary thickness is formed by a series of consecutive shots. For processing the big surfaces a part moves in front of a barrel with the help of the manipulator.