PLASMA SPRAYING HEAD PLASMA SPRAYING DEVICE AND PLASMA SPRAYING METHOD

摘要

The objective of the present invention is to provide a plasma spraying head which can narrowly arrange an interval among a plurality of spraying guns. According to an embodiment of the present invention, the plasma spraying head for melting powder of a spraying material with plasma and performing film deposition on a target object to be treated by molten powder comprises: a spraying gun including a nozzle transferring the powder of the spraying material by plasma generation gas and spraying the powder of the spraying material from an opening in a front end unit and a plasma generation unit for generating plasma having the same shaft center with the nozzle by decomposing the plasma generation gas sprayed by the nozzle with power output by a direct current power supply; and a main body unit integrally supporting a plurality of spraying guns, and including an internal refrigerant passage through which a refrigerant passes.