Heavy duty plasma spray gun

Patent · Tue Apr 24 04:00:00 EST 1984

OSTI ID:6171113

Irons, G C; Klein, J F; Lander, R D; Thompson, H C; Trapani, R D

A heavy duty plasma spray gun for extended industrial service is disclosed. The gun includes a gas distribution member made of a material having a coefficient of expansion different from that of the parts surrounding it. The gas distribution member is forcibly urged by a resilient member such as a coiled spring against a seal so as to assure the plasma gas is introduced into the gun arc in a manner only defined by the gas distribution member. The gun has liquid cooling for the nozzle (anode) and the cathode. Double seals are provided between the coolant and the arc region and a vent is provided between the seals which provides an indication when a seal has failed. Some parts of the gun are electrically isolated from others by an intermediate member which is formed as a sandwich of two rigid metal face pieces and an insulator disposed between them. The metal face pieces provide a rigid body to attach the remaining parts in proper alignment therewith.

• Assignee: Metco, Inc.
• Patent Number(s): US 4445021
• OSTI ID: 6171113
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ACETYLENE
ALKYNES
COOLING SYSTEMS
CURRENTS
DESIGN
DISTRIBUTION
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ENERGY SYSTEMS
FLAMES
HYDROCARBONS
OPERATION
ORGANIC COMPOUNDS
PLASMA GUNS