Cold spray apparatus and method with modulated gasstream

摘要

The cold gas spray apparatus (1) has a high pressure gas generator (22) for the production of a high pressure gases and a nozzle (8) from which a cold gas particle stream (7) is emitted. An influencing medium (25,26,29,32,35,36) is provided. The cold gas particle stream is guided for variable modification of the characteristics temperature, pressure, particle density, particle material and velocity. A property of the cold gas particle stream is periodically modifiable by influencing medium. An independent claim is also included for a cold gas spraying method by the cold gas spray apparatus.