Russell
Meredith of Northrop Aircraft perfected the process in 1941. Meredith named the
process Heliarc because it used a tungsten electrode arc and helium as a
shielding gas, but it is often referred to as tungsten inert gas welding (TIG).
The American Welding Society's official term is gas tungsten arc welding
(GTAW). Linde Air Products developed a wide range of air-cooled and
water-cooled torches, gas lenses to improve shielding, and other accessories
that increased the use of the process. Initially, the electrode overheated
quickly and, despite tungsten's high melting temperature, particles of tungsten
were transferred to the weld. To address this problem, the polarity of the
electrode was changed from positive to negative, but the change made it
unsuitable for welding many non-ferrous materials. Finally, the development of
alternating current units made it possible to stabilize the arc and produce
high quality aluminum and magnesium welds.
More details, please feel free to contact us by email sales@chinatungsten.com.
没有评论:
发表评论