Arc Welding Articles

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.

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Arc Welding 101: When to use updated AWS D1.1

June 2, 2014

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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...

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Inverter helps manufacturer achieve improved arc starts, arc control

June 2, 2014

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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.

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Arc Welding 101: Oscillation during welding - Why?

May 30, 2014

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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...

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Courage over fear

May 26, 2014

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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.

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The art of welding and friendship

May 19, 2014

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Ten years ago, three women enrolled in an art and sculpture welding class. Little did they know it would be the start of a beautiful friendship.

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Arc Welding 101: Welder requalification testing - When and why?

May 13, 2014

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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...

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Arc Welding 101: Updating WPSs and PQRs

May 12, 2014

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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....

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Arc Welding 101: CV or CC - What’s the difference?

May 9, 2014

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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...

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Arc Welding 101: Benefits of the CWI designation

May 7, 2014

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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...

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Arc Welding 101: D1.1 welder documentation

May 6, 2014

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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...

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Arc Welding 101: Minimizing defects from welding starts, stops

May 5, 2014

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Q: I am having trouble making welds that are all the same length when using GMAW. How can I create tie-ins that are all in line with each other and spaced out as they should be? Allen T. A: It is understood throughout the industry that most weld defects are attributed to weld stops and...

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Arc Welding 101: Evaluating partial joint penetration grooves for welder qualification to AWS D1.1

May 5, 2014

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Q: How would you evaluate a flare V-groove joint for welder qualification to AWS D1.1? The standard is not clear on how to test the prequalified joint (B-P11-GF). Dale L. A: AWS D1.1 Subclauses 4.25 and 4.28, you’ll see that D1.1 for personnel qualification states that a complete joint...

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Metalworking throughout history

May 5, 2014

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Metalworking began long before the Iron Age, and welding has undergone its share of developments throughout the centuries. How much do you know about its history and evolution?

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Make way for the brew crew

May 5, 2014

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Craft beer is all the rage these days, and Crawford Co., Rock Island, Ill., has thrown its hat into the ring. After working closely with a local brewer who contracted the fabricator to build larger-capacity equipment, the two partnered to form a no-nonsense brewing division within the company to address the needs of the booming craft beer industry.

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Arc Welding 101: Advice for a conflicted CWI

May 2, 2014

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Q: The company I work for takes on jobs at the last minute, which makes it harder for me to work at the level that the customer requires, especially providing material test reports (MTR). I cannot provide all the MTRs our customer requires. Often we don't get them from our vendor, or parts have sat...

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