METHOD AND SYSTEM FOR THERMAL SPRAYING

摘要

A method and a system for thermal spraying capable of softening or melting spraying powder fed from a feeding machine to a thermal spraying machine through a connection pipe and spraying the powder from the thermal spraying machine, the method comprising the steps of sucking the thermal spraying powder stored in the feeding machine to the suction end of the connection pipe by reducing an atmospheric pressure in the connection pipe to a negative one relative to an atmospheric pressure in the connection pipe near the suction end, transferring the thermal spraying powder sucked to the suction end of the connection pipe to the delivery end of the connection pipe and leading into a tubular air stream injected from an injection port provided in the thermal spraying machine or leading into a combustion chamber provided in the thermal spraying machine or an injection nozzle, and softening or melting and spraying the powder.