Powder flame spray torch - and nozzle assembly

摘要

A powder flame spray torch and nozzle assembly comprises a housing for externally feeding powder by gravity through a conduit extending to a flame issuing from a nozzle coupled to means on the housing through which a combustible gas is fed to and though the nozzle. The nozzle comprises a hollow cylindrical gas chamber having a converging conically shaped nose terminating into a closed tip; and gas-conducting orifices communicating with the gas chamber of the nozzle and passing through the nose of the nozzle coaxial with the axis of th nozzle and emerging from the conical surface thereof short of the tip. The orifices are disposed radially about the axis of the nozzle and lie in a circle on the conical surface adjacent the tip when observed from the tip end of the nozzle.