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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Arc Welding 101: Addressing linear porosity

September 29, 2014

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Q: We are experiencing linear porosity at the furthest point of penetration when welding heavy plate. The porosity is 0.3 mm dia., but it occurs regularly in every weld we’ve sectioned so far.We are using a semiautomatic spray transfer process with a 0.045-in. ER70S-6 electrode, and a shielding...

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Arc Welding 101: Three keys to a successful CWI

September 26, 2014

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Q: I was recently interviewed by a writer who was researching how welders make the transition to certified welding inspectors (CWI). One of the questions he asked was, “What key skills make for the best certified welding inspector?” A: Communication—written, photographed, or verbal—is the...

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The art of welding versus welding art

September 25, 2014

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How do you make those sculptures? How can I make them? Not easy questions to answer, but not for the reasons you may think.

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Selecting filler metals for stainless steel welding

September 23, 2014

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Q: We're a midsize job shop that manufactures a wide variety of products from various types of metal. Currently we have a project that requires welding 304L to 316L stainless steel and welding both of these alloys to A572 Grade 50 steel. Some of the welds are structural and some are used in...

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Globular-transfer mode for MIG

September 23, 2014

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Q: I am employed as an AWS D.1.1-qualified welder at a machine shop. I was wondering why you can certify on 75 percent argon/25 percent CO2 when you are not allowed to use a short-circuit transfer on materials over 3/16 in. You need at least 83 percent argon to obtain a spray transfer, yet I passed...

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ESAB celebrates 110 years in business

September 15, 2014

ESAB Welding & Cutting Products, a manufacturer of arc and gas welding equipment, manual and automated plasma cutting products, CNC cutting systems, welding automation and robotics, welding consumables, accessories, and PPE in Florence, S.C., marks its 110th anniversary in September 2014. In...

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Inverter-based power source designed for high-productivity welding

September 12, 2014

ESAB Welding & Cutting Products will display the Aristo® Mig 4004i Pulse power source at FABTECH. It can be combined with the Aristo Feed 3004 or Aristo Feed 4804 wire feeder to form a complete GMAW package. The feeds are offered with a choice of machine interface — the user-friendly U6 or...

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A welder’s hands and eyes

September 11, 2014

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Although steady hands and good eyesight are ideal for welding, there are ways to compensate for the inherent lack of either.

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Fronius USA announces staff additions

September 9, 2014

Fronius USA LLC, Portage, Ind., has announced the addition of two new staff members. Ian Patrick has been named sales/system engineer, working in the tech support department in the Portage office. A former U.S. Navy aviation electronic technician, he worked on electronic warfare aircraft...

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Diesel engine-driven welding machines handle multiple welding operations

September 3, 2014

Lincoln Electric has introduced the Vantage® 600 SD and Air Vantage 600 SD engine-driven welding machines. Each is equipped with a Tier 4 Final-T4F-compliant Deutz® turbo-charged diesel engine that meets all new EPA diesel fuel emission standards. Designed for heavy industrial applications...

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Arc Welding 101: Achieving a good work lead connection

August 29, 2014

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Q: What makes a good ground connection, and why is it important? A: In a welding circuit, current needs to pass through as few connections as possible, and the circuit itself needs to be as short as is practical. On the positive (+) side for gas metal arc welding (GMAW), direct-current electrode...

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Fabricator delivers a big fish story

August 28, 2014

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Lou Rodriquez finds out he has a talent for creating metal art and ends up with a fish tale that is easy to believe because people can see the result: a huge metal sturgeon that’s the talk of Port Huron, Mich.

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Arc Welding 101: Reading between the lines of AWS D1.1

August 27, 2014

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Q: I am a weld inspector and one of my clients builds control panels. A potential customer of theirs requested that they conform to AWS D1.1 standards on a control panel. This seems odd to me. Can a company become AWS D1.1-certified? Is there a certain process they have to go through to become a...

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Consumables Corner: Choosing a filler metal supplier with critical welds in mind

August 25, 2014

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Q: What should we look for when choosing a filler metal supplier for critical welds, such as those in the power generation industry? A: For critical applications, you need to find a supplier with a long track record in understanding the needs, developing products, and creating solutions for that...

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Aluminum oil tank repair

August 21, 2014

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A welded aluminum oil tank extended the life of a Formula Ford, making it race-worthy again.

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