Flame-spraying torch for powdered materials - has material supply channel contg. helically formed plates

摘要

Flame spraying torch for powered materials has a material supply channel (2) contg. one or several helically formed plates (3) which divide the channel cross section into sectors and exhibit a twist of at least 90 deg., Pref. 90-450 deg., about the longitudinal axis over a length of 2-10 times the width of the channel. N2 is passed through the channel along with power with an average grain dia. of 1-120. pref. 5-60 microns. ADVANTAGE - Improved particle distribution in the sprayed stream. (5pp Dwg.No. 1/3)