John Luck

Gas tungsten arc welding (GTAW), or tungsten inert gas (TIG) welding, often is thought of as the most difficult welding process to master. Fortunately for welders, several technological advances have occurred, forcing many to rethink their assumptions. Alternating current (AC) GTAW is no longer...

Metal fabricator Kevin Stone uses gas tungsten arc welding (GTAW) to sculpt massive pieces of art from stainless steel. Read about Stone's creative and technical processes and discover important tips that can improve your stainless steel welding.

More knowledge about adjustable-output frequency has played a significant role in the development of new technologies that have made GTAW applications more reliable and adaptable.

Vesco Metal Craft, a manufacturer of rugby wheelchairs, makes specialized wheelchairs from 6061 seamless aluminum tubing. This violent, collision-oriented sport causes cracks in the welds' heat-affected zone, so the company sought better manufacturing methods. It added heat-treating to its process and switched to an inverter-based welding unit that gives the company's welders advanced waveform control.