Arc Welding

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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Fronius USA, voestalpine Böhler Welding to host open house June 24

June 2, 2014

Fronius USA and voestalpine Böhler Welding will host an open house June 24 in Sparks, Nev. The company will offer live welding demonstrations and a product showcase highlighting its consumables and welding equipment. The event is free and space is limited. Two sessions are available. For...

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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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Clamp-on weld heads expand orbital system for welding small-diameter pipe, tube

May 29, 2014

The Lincoln Electric Co. offers HELIX® C450 and C663 weld heads for welding various pipe and tube sizes. With these orbital GTAW clamp-on weld heads, operators not only can weld large diameters with no upper limit, they also can weld smaller tubes and pipes with ODs from 1.315 to 6.63 in. The weld...

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Tube cutting machine recycles heavy-wall weld coupons

May 27, 2014

The new CouponMASTER™ weld coupon machine from Tri Tool is suitable for use in union halls, colleges, and trade schools where high numbers of weld coupons are used in training and certification programs for welders qualifying with heavy-wall pipe. The unit reuses and recycles postwelded training...

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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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Man or machine?

May 22, 2014

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Despite the advancements made in welding technology, the operator is still the most important piece of the puzzle.

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Hobart Institute of Welding Technology announces changes to executive board

May 21, 2014

The board of directors of Hobart Institute of Welding Technology, Troy, Ohio, has announced the retirement of longtime Chairman of the Board and President André Odermatt, a position he held for 11 years. Before working at HIWT, Odermatt was employed at Hobart Brothers Co., where he began in...

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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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Wireless pedal designed for GTAW applications

May 12, 2014

Lincoln Electric has introduced the K3127-1 wireless pedal for GTAW applications. It eliminates cords for improved workplace safety and reduced clutter. The system includes the foot pedal and receiver, which operate on a number of the company’s power sources. The receiver features an LED...

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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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The trades—a viable first option

May 8, 2014

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Our schools oughta be giving kids the same opportunities and incentives to hone a cylinder or nail an overhead root pass as they do to find the value of x.

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