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 21, 2014
When Dave Milo set out to build a portable hardbanding unit, the former trucking company owner knew little about welding and nothing about hardbanding. After updating the hardbanding unit design a few times with consulting help from Lincoln Electric, Milo thinks he’s ready to change direction. Rather than providing hardbanding services, his goal is to sell hardbanding machines.
June 19, 2014
Merrill Fabricators takes an innovative approach to the skilled labor crisis, by launching and growing its own welding school not only to fill its own ranks, but also to help grow the broader manufacturing community.
June 16, 2014
Being a code welding shop with an ever-expanding customer base continuously challenges Andy J. Eagan Co. Inc., Grand Rapids, Mich. New customer projects and keeping on top of certification demands require a talented and dedicated workforce. As a result, that’s where the company puts a lot of its focus.
June 2, 2014
Q: I currently use the AWS D1.1-2006 edition and was wondering if I should get the 2010 edition. Dan C. A: Take a look at Section 4.2.1 of your D1.1-06 edition, referred to as “Clause” in later editions. It states, “The use of earlier editions shall be prohibited for new...
June 2, 2014
The welders at JATCO Environmental Inc., a manufacturer of steam-to-liquids condensers for natural gas extraction, had a problem with striking and maintaining a good arc. When the company switched from a rectifier-based unit to an inverter-based unit, the welders found that the arc starts and weld characteristics were greatly improved.
May 30, 2014
Q: What are the reasons to oscillate a weld process? Vince H. A: Oscillation helps a steelworker using electroslag to fabricate components for San Francisco’s Bank of America building; it helped to minimize the arm fatigue of a pipefitter as he built Louisiana’s River Bend nuclear power...
May 26, 2014
After trying her hand at various traditionally female-oriented careers, an Alabama woman, on a mission to provide the best life for herself and her newborn son, found courage to ask a shipyard for a job. That courage ultimately sparked a chain of events that led her to a fulfilling career.
May 13, 2014
Q: If a welder is no longer welding but he wants to maintain his qualifications period of effectiveness, we require four hours of production welding time to maintain that qualification. Four hours doesn’t seem quite long enough to stay in the groove. What say you? Jeff P. A: As a good...
May 12, 2014
Q: We weld sheet metal to D1.3 requirements. Our current welding procedure specification needs to be updated. Our customers are asking for a separate WPS/ PQR [procedure qualification record] for fillet and groove welds. Until now I believe we had both fillets and grooves covered by one WPS/PQR....
May 9, 2014
Q: What is the difference between constant current and constant voltage? A: I’m often called on to explain this topic when I teach. Electric arc welding has two main variables: current and voltage. Welding machines will supply both, but they are capable of consistently maintaining only one of...
May 7, 2014
Q: I am trying to decide whether obtaining CWI designation would be beneficial to my career. I am presently unemployed and would like to increase my marketability to potential employers. I have a B.S. degree in metallurgical engineering plus over 20 years experience as a materials engineer in the...
May 6, 2014
Q: We have had guys certified for D1.1 for 15 years. But in the D1.1 book it says that they need to weld in every six-month period to keep their qualification current. What type of documentation do we need to keep on file to show that they have been welding? I cannot find this in the book, so I...