From Tungsten Electrode to GTAW Development Ⅰ

The following content is one part of GTAW development on tungsten electrode.

Arc welding develop slowly after the discovery of short pulsed electric arc in 1800 by Humphry Davy, and of the continuous electric arc in 1802 by Vasily Petrov. C.L.Coffin had the idea of welding in an inert gas atmosphere in 1890, but even in the early 20th century, because these metals react rapidly with air and result in porous, dross - filled welds, welding non-ferrous materials(such as, aluminum and magnesium), remained difficult. Processes using flux-covered electrodes didn’t keep the weld area from contamination well. To solve the problem, bottled inert gases were applied at the eailier1930s. A few years later, a direct current, gas-shielded welding process emerged in the aircraft industry for welding magnesium.

Russell Meredith of Northrop Aircraft perfected the process in 1941. Because it used a tungsten electrode arc and helium as a shielding gas, Meredith named the process Heliarc, but it is often referred to as tungsten inert gas welding (TIG); in parts of the world where tungsten is called wolfram, it is known as WIG. 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 using of the process. 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

• < Prev
• Next >