The arc welding technology area focuses on the most commonly used arc welding processes, mainly GMAW/MIG, GTAW/TIG, SMAW/stick, and plasma. The articles and press releases cover processes and power sources, plus all of the related items—electrodes and wire, wire feeders, fixtures, manipulators, positioners, and power sources. If you need information on personal protective gear, ventilation systems, and safety practices for welders, see our Safety coverage area.
July 19, 2013
Gas tungsten arc welding, a joining process developed decades ago, has been improved by many technology developments over the years, but the essentials are unchanged: It uses an electric arc between a nonconsumable tungsten electrode and the workpiece to produce a weld pool, and it uses a shielding gas. Experiments with brushing on or pasting on mixed metal oxide slurries have shown how this decades-old process can improve dramatically in penetration and speed.
July 16, 2013
Taking your shop to the next level might involve ASME certification. Just what does this entail? It begins with an agency.
July 12, 2013
Scott Schreiber, head welding instructor at Green River Community College, Auburn, Wash., possesses an innate ability to connect with his students, a tenacious drive for excellence and continuous improvement, ingenuity, and a commitment to improving the welding trade. It is for these reasons and many more that Schreiber is the 2013 PWTeacher of the Year.
June 12, 2013
Welding distributorships have changed dramatically over the years. Longtime welder Carl Smith reflects on the changes and offers a history lesson on how they came about.
May 22, 2013
Welder and educator Marty Rice has led a colorful life in his welding career. He’s learned some lessons the hard way and met some interesting characters along the way.
May 15, 2013
As the welding instructor at Albion Correctional Facility in Albion, N.Y., Jeffrey Benfer is constantly dealing with teaching new batches of inmate workers the ins and outs of production gas metal arc welding, keeping up with their mandatory vocational qualifications, and meeting project deadlines. But there’s one thing that has provided an unexpected yet relaxing outlet: metal art.
May 3, 2013
The U.S. Navy has been searching for new weld-repair methods on its aluminum-hulled ships beyond dry docking, which is impractical and costly. Phoenix Intl., an underwater services company that has held the Navy’s Diving Services contract for the past 15 years, may have found one: underwater aluminum GMAW in a hyperbaric chamber.
April 19, 2013
Chronic exposure to manganese oxide fumes, which occur when manganese metal is heated and reacts with oxygen, can lead to damage to the central nervous system. Welders are especially susceptible to this disease, called maganism by the National Institutes of Health, because manganese is found in many welding rods and filler metals to promote hardness. The American Conference of Governmental Industrial Hygienists recently issued guidance that dramatically reduced suggested threshold limit values. Because many metal fabricators use this guidance to manage worker exposure, they now are having to rethink how they approach personal protective equipment.
April 19, 2013
Submerged arc welding is known as a process that can result in high welding speeds and deposition rates. However, in today's manufacturing reality, engineers are always looking to boost productivity—even for already productive processes. Fortunately, companies have three common approaches to consider to increase the performance of their submerged arc welding systems.
April 17, 2013
A shop is only as productive as its constraint process—that is, its bottleneck. All that adaptability in upstream processes may not make a part cost less if it takes days or weeks to build a new weld fixture. A modular approach to weld fixturing can help.
April 16, 2013
Mississippi metal artist Stephanie Dwyer never knew she was an artist until she relocated from Washington and began building bottle trees. Today her bottle trees can be found all over the U.S., which has led to opportunities in custom metal art fabrication.