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.
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.
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 | By Steve Massey
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 | By Pam Farley
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 | By Amanda Carlson
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.
March 19, 2013 | By Professor R. Carlisle "Carl" Smith
The natural gas boom in parts of the U.S. is creating work for shops and many displaced workers in these areas. Do you know which codes and standards apply?
March 1, 2013 | By Mark Kadlec
Titanium is favored for its extreme strength and corrosion resistance, but improper weld preparation and the introduction of oxygen and other contaminants into the weld zone can render it useless.
February 15, 2013 | By Amanda Carlson
Steve Appel of Prescott, Ariz., has been making his bolt people full time for the last 23 years. The variety of requests and the kick he gets out of people’s reactions have turned this one-time hobby into an enjoyable career.
February 5, 2013 | By Andrew Pfaller
Wondering if it’s time to transition from a transformer-style gas tungsten arc welding (GTAW) power source to an inverter-based machine? What are the differences between the two, and what can you expect if you switch?
January 14, 2013 | By Amanda Carlson
Three weld instructors from across the country share their classroom tips and tricks for helping welders tackle vertical-up and overhead SMAW.
January 7, 2013 | By Amanda Carlson
A careful examination of metal artist Dave Regier’s work reveals a seamless melding of abstract and realism.
November 14, 2012 | By Marty Rice
In this, his last TIG article, ever, welding instructor Marty Rice offers some advice for the home hobbyist about buying equipment and shielding gas.
November 5, 2012 | By Randy Dull
Shielding gases do more than just protect the weld from atmospheric contamination. The gas and gas blends you use also influence the weld profile and the weld bead shape. Also, for an arc to occur in gas metal arc welding (GMAW), an ionized gas must be present to carry the charge.
November 5, 2012 | By Amanda Carlson
When he’s not TIG welding at his “normal” job, career welder and metal artist Roger King uses his skills with a TIG torch to create metal sculptures.
November 2, 2012 | By Amanda Carlson
Super Bowl XLVI in Indianapolis earlier this year featured athletic prowess and classic gridiron toughness with a little speed and finesse. But also on display outside the stadium throughout the heart of downtown was a combination of strength and artistic flair that only a metal art sculpture can provide.