The relatively mature spraying system was widely used in the United States in the 1980s, even 2-3 times the speed of sound, and the air flow speed was 4 times the speed of sound. Universal application. Jet.kote lI NovaA is optimized and improved spraying Jet.kote is the earliest spraying system. Jet.kote II is mechanically bonded, with high bonding strength (77MPa) and low coating porosity (1%). This process has a low heating temperature (93 "(2)) for the workpiece, and the workpiece is not deformed, so it can be cold sprayed. When spraying, the flame temperature is high (2650-2870" (2), the powder particle speed is high (1370m/s), and there is no heat affected zone. The composition and structure of the workpiece have no change, and the coating hardness is high, so it can be machined.

22. Discharge pneumatic ball valve: the discharge pneumatic ball valve is a valve that uses a ball with a circular channel as the opening and closing part. The ball rotates with the valve stem to achieve the opening and closing action. The opening and closing part is a ball with holes, which rotates around the axis perpendicular to the channel to achieve the purpose of opening and closing the channel. It is suitable for sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine, strong alkali, aqua regia and other highly corrosive media.