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.
April 24, 2014
Q:The company that I work for makes a single-pass circumferential weld on which there is a minor tendency for an open pore in the weld crater at the tie-in. Our engineering department deems this weld discontinuity as a cosmetic issue only and thereby has authorized the use of a sealant. In the...
April 23, 2014
Q: Why do good welders fail weld tests? Anonymous A: Sometime around 1981, when unemployment rates were near 9 percent and after I had moved around from one bad job to another, I was given the opportunity to take the welder qualification test at Cyde Iron Works in Duluth, Minn. Passing the test...
April 22, 2014
Q: Can you tell me how to identify tungsten after the paint is worn off? Anonymous A: The two most common processes that use a nonconsumable tungsten electrode are gas tungsten arc welding (GTAW) and plasma arc welding (PAW). These electrodes come in a variety of compositions or alloys, and...
April 21, 2014
Q: The company I work for welds with GMAW-S, and all of the weld procedure specifications (WPS) that we have are from prequalified AWS D1.1 welds. When I look in D1.1, I find that GMAW-S is not a prequalified transfer mode. Are all of our WPSs null? If I understand D1.1 correctly, we would need to...
April 21, 2014
Instead of a Q&A column this issue, we’re going to talk PPE and hygiene. The idea was inspired by my wife Dianne, who bought me an issue of Esquire magazine before our trip to Oregon. She was adamant that I read it, so finally I picked it up. Among the advertisements for men’s fragrances,...
April 21, 2014
Welder Josh Welton, Brown Dog Welding, has found success far beyond the work he does in his shop. Through social media, Josh has created a brand in demand by an ever-increasing following. The latest venture in the shop’s evolutionary process is Art of the Steel, a book that features Josh’s metal art and more.
March 18, 2014
Virtual reality welding technology is increasingly being used as a tool to streamline the hiring and evaluation process for welders. Manufacturers that have incorporated the technology are finding several benefits.
February 10, 2014
Although oil extraction around the world has grown by 50 percent in the last 30 years, it was basically flat in North America until 2008. Higher oil prices have made tar sands oil economically viable, and new extraction techniques have been a boon to U.S. producers. Interviews with a variety of vendors in the forming and fabricating industry reveal the many trends that are driving changes in the equipment and supplies used in the petroleum business.
January 27, 2014
Arc performance and electrical efficiency have driven various advances in inverter-based welding power sources. These improvements have led to present-day digital welding systems that allow for repeatable, high-precision, low-spatter welds on a variety of materials.
January 13, 2014
Scott Behr, founder and fabricator at Total Metal Resource Inc., Brooklyn, N.Y., usually gets a pretty enthusiastic response when he tells people what he does for a living. With the upstart of his Metal Shop Fantasy Camp, he can now share tiny parts of his job with people who might otherwise never get an opportunity to try their hand at metalworking.
January 2, 2014
Schweissen & Schneiden, Europe’s premier and most comprehensive welding and cutting tradeshow, had plenty of technology and innovation. Twelve exhibition halls housed more than 1,000 exhibiting companies from more than 40 countries. Roughly 55,000 attendees from 130 countries made their way through the aisles during the six-day event, where they were able to view the latest advances in welding and cutting technology, hand tools, safety gear, consumables, and other equipment.
December 10, 2013
So, I’m half-awake and realize it’s Saturday, and I can sleep in. Then my toes start cramping, and I’m not about to let them wake me. So I start relaxing mentally while physically bending them back and forth, and then nod off. I guess my sleeping brain forgot to tell my toes I...