THERMAL SPRAY NOZZLE DEVICE AND THERMAL SPRAY DEVICE USING THE SAME

摘要

[PROBLEMS] A thermal spray nozzle device capable of accurately forming a uniform and compact metal laminate, and a thermal spray device using the thermal spray nozzle device. [MEANS FOR SOLVING PROBLEMS] A thermal spray nozzle device in which a carrier gas is introduced into the entrance side of a nozzle (1) to form a supersonic gas flow in the entire region inside the nozzle and a thermal spray material is atomized and ejected by the gas flow. The thermal spray nozzle device has a thermal spray material insertion section (5) through which the thermal spray material (4), formed in a linear shape, is inserted into the nozzle (1) from the entrance side so as to be substantially parallel to the gas flow, and has a laser device for heating and melting, in the vicinity of the fore-end of the thermal spray material insertion section (5), the thermal spray material (4) projecting from the thermal spray material insertion section (5). Thermal spray material particles that are melted and atomized by the laser device are quickly cooled by the gas flow in the nozzle (1) and ejected in a coagulated state or a semi-coagulated state.