B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
327/72
B05B 7/22 (2006.01) C23C 4/12 (2006.01) H05H 1/34 (2006.01)
Patent
CA 1300694
HIGH POWER EXTENDED ARC PLASMA SPRAY METHOD ABSTRACT OF THE DISCLOSURE A high voltage, high current is applied between a cathode electrode and a conductive body forming a spray nozzle and acting as a second anode electrode aligned with the first electrode and being spaced therefrom. A vortex flow of plasma-producing gas is established within a cylindrical body carrying said electrode to create a low pressure core of gas flow extending through the anode passage to establish an extended ionized arc column throughout the anode passage with the rate of gas flow adjusted and the arc current correlated to the anode nozzle passage diame- ter to produce a supersonic extended ionized arc column which extends beyond the end of the nozzle by a distance which is approximately four times the nozzle passage diameter. Preferably the material to be sprayed is introduced into the extended ionized arc column beyond the end of the nozzle to maximize the spray rate without undesirably overheating the spray material.
560492
Browning James A.
Finlayson & Singlehurst
LandOfFree
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