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.
June 1, 2010 | By Amanda Carlson
Many structural steel fabricators are loyal to shielded metal arc welding (SMAW). But technology advancements in the wire feed process known as flux-cored arc welding (FCAW), paired with an increasingly competitive market, have changed the landscape of structural steel environments, and by extension the opinions of the most loyal SMAW users.
Architects and engineers are designing structures with new and innovative shapes. To meet these ever-changing requirements, manufacturers may turn to solid-state, high-frequency electric resistance welding (HF ERW) to produce engineered structural sections at high speeds with unlimited beam profiles, better structural performance, and with lighter weights.
May 25, 2010
Submerged arc welding (SAW) can be performed in various ways, from the simplest process using a single wire and DC power to more advanced twin-wire and tandem operations. Choosing the right SAW process for your operation can help you increase deposition rates and productivity.
May 5, 2010 | By Bill Bonow
The orbital welding process has seen significant advancements in electronic control technology that have helped open the door to a wider array of applications while making it more cost effective to use.
May 4, 2010 | By Amanda Carlson
Like many companies, Ultra Machine and Fabrication Inc., Shelby, N.C., a fabricator of armored military vehicles, believed the welders should clean up their own weldments for spatter, slag, and other discontinuities. But when welders were spending less and less time under the hood, Ultra re-evaluated this philosophy and, as a result, implemented a separate postweld cleaning team.
April 30, 2010 | By Dean C. Phillips
Welding metals of dissimilar strengths requires that a welder consider some specific factors, to ensure a solid joint.
Some welders swear that stainless steel warps if you just look at it wrong. This is an exaggeration, but it does reflect the metal's low rate of thermal conductivity, which causes the input heat to remain localized; localized heating and cooling promotes distortion. Adding more heat doesn't...
April 1, 2010 | By Wesley Doneth
A unique method of metal transfer allows gas metal arc welding to tackle thin-gauge and cosmetically sensitive workpieces.
March 1, 2010 | By Mike Barrett
When welders tackle new materials, weldability should always be on their radar. Certain alloys aren't so kind to the welding gun.
February 9, 2010 | By Dan Davis
P&H Mining equipment, Milwaukee, Wis., makes very large equipment, such as its largest electric shovel that weighs 1,200 tons. Shovel components keep getting larger, and to keep up with the market trends, the company needed a new welding positioner. That's a "big" deal in every sense of the word. Luckily, Koike Aronson Inc./Ransome was able to help.
January 15, 2010 | By Tim Heston
Hydrogen cracking can send a project off schedule in a hurry. Here are ways to prevent it.
January 6, 2010 | By David Lucas
Although P91 offers many advantages for power generation in terms of strength and service life, it is more difficult to fabricate than traditional materials and many contractors shy away from it. Icon Mechanical, Granite City, Ill., is one such contractor. However, a chance to do some work on an energy system provided an opportunity to explore the potential of a nontraditional welding method that turned out to work well on P91.
January 6, 2010 | By Andy Monk
Think GMAW guns and consumables don't have an impact on your final weld? Think again. By separating the myths surrounding GMAW guns and their consumables from the facts, you can ensure you're not compromising performance or weld integrity.
December 1, 2009
Energy Steel & Supply Co., Lapeer, Mich., a fabricator that manufactures components for nuclear power plants, used to spend quite a bit of time on pre- and postweld heat treatment. After seeing a demonstration of an induction heating system, the company made the switch and enjoys the benefits of a faster, safer way to deliver heat to the components it manufactures.
November 24, 2009 | By Nick Peterson
Fewer skilled welders combined with an ever-increasing range of welding applications have created a demand for more precise, application-specific welding systems. Equipment suppliers now are tailoring systems for different applications, and fabricators are embracing the new technology.