Gas Tungsten Arc Welding

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Gas Tungsten Arc Welding

Arc Welding Process:

The gas tungsten arc welding process heats and melts the materials to be welded with an electric arc established between a tungsten electrode and the workpiece. Using proper fixturing and parameters, the process can be used for micro-welding applications where heat input needs to be minimized. Used in the continuous arc or pulsed arc mode. Arc energy is not as concentrated as a laser and thus heat input is higher to the workpiece.

gtaw_1 — 0.030" thick disc GTA welded to housing

gtaw2 — Cross section of 0.030" disc to housing

Advantages:

Less expensive equipment and simpler process compared to laser welding.
Reduced weld crack sensitivity compared to other welding processes.
Part fit up is not as critical as other welding processes.

Materials That Have Been Gas Tungsten Arc Welded:

Stainless steel alloys
Hastelloy alloys
Inconel alloys
Steel alloys

Additional Capabilities:

A filler wire system which automatically feeds 0.015″- 0.045″ diameter filler has been coupled to one of the automated systems. Inert box capability also.

Gas Tungsten Arc Welding Equipment:

Two fully automated, 100amp, continuous/pulsed arc systems each coupled to a welding lathe for part rotation with automated electronic positioning of the electrode spacing to the workpiece.
One manual, 100 amp, continuous/pulsed arc system.