Plasma cutting and welding torches with improved nozzle electrode cooling

Patent · Tue Jul 31 00:00:00 EDT 1984

OSTI ID:6312357

McNeil, J

A plasma torch comprises a handle having an upper end which houses the components forming a torch body. Body incorporates a rod electrode having an end which cooperates with an annular tip electrode to form a spark gap. An ionizable fuel gas is fed to the spark gap via tube within the handle, the gas from tube flowing axially along rod electrode and being diverted radially through apertures so as to impinge upon and act as a coolant for a thin-walled portion of the annular tip electrode. With this arrangement the heat generated by the electrical arc in the inter-electrode gap is substantially confined to the annular tip portion of electrode which is both consumable and replaceable in that portion is secured by screw threads to the adjoining portion of electrode and which is integral with the thin-walled portion.

• Assignee: Weldtronic Limited (United Kingdom)
• Patent Number(s): US 4463245
• OSTI ID: 6312357
• Resource Relation: Patent Priority Date: Priority date 23 Jun 1983, United Kingdom of Great Britain and Northern Ireland (UK); Other Information: PAT-APPL-391009
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
PLASMA ARC WELDING
WELDING MACHINES
DESIGN
ELECTRIC ARCS
ELECTRODES
FUEL GAS
THREADED JOINTS
WELDING RODS
ARC WELDING
CURRENTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
FABRICATION
FLUIDS
FUELS
GAS FUELS
GASES
JOINING
JOINTS
WELDING
420200* - Engineering- Facilities
Equipment
& Techniques