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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Joining incompatible materials

April 10, 2007

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Certain metal combinations cannot be joined successfully with fusion welding. Deciding how to join them requires examining options, including potential material substitutions and process possibilities. This article discusses these options and offers a blueprint for the best solution.

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Brazing diagram

Brazing copper and copper alloys

March 13, 2007

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It is important to be able to identify when brazing is suitable for joining copper or copper alloys, how it is applied, and which filler metals to use.

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Rotary bevel head

Up with energy prices and wind towers

March 13, 2007

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With the recent increases in gasoline and natural gas prices, more attention than ever is focused on alternative energy sources. One fabricator, Aerisyn LLC, investigated manufacturing towers for use in the wind power industry. To produce towers efficiently enough to compete against imports from Asia, Aerisyn relied on an equipment vendor that had experience in demanding fields such as aerospace, nuclear, and wind power.

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Arc Welding 101: Preheating a shaft-sprocket assembly

February 13, 2007

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Q: We are welding 1018 cold-rolled, 2.5-inch-diameter shaft to a sprocket made from 1045 steel. We preheat the shafts to about 200 to 250 degrees. We are having some failure of the shaft, and I'm wondering what the proper procedure is for welding the assembly together. The sprockets are welded...

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Ward pressure vessels

Pressure to perform

February 13, 2007

A fabricator of large pressure vessels implements a welding power source to help it meet growing customer demand and ensure stringent quality standards without expanding its work force.

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Wrayco shop image

Moving to modular welding fixturing

January 9, 2007

Wrayco's progression from dedicated welding fixturing to modular fixturing has reduced storage space and maintenance, created faster setups for critical prototypes and quick-turn projects, and improved quality control.

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GTAW welder

Seeing GTAW through a new lens

January 9, 2007

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Not every welder uses a gas lens on his or her GTAW torch, but gas lenses should be considered for a variety of applications and for several reasons. Knowing what a gas lens does, how to choose one, and how to install and take care of one are critical to getting the most benefits out of it

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Effects of shielding gas

7 effects of shielding gas

January 9, 2007

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Depending on your application, various components of your shielding gas blend can help or hurt you. Find out what effects shielding gas has on your weld and what you can do to get the best results.

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Plasma Arc Welding

P is for plasma, precision

December 12, 2006

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Plasma arc welding (PAW) is very similar to gas tungsten arc welding (GTAW), but its highly concentrated arc makes it very different - and not necessarily the best process for every application. A close look at its characteristics and equipment will help you decide if it's right for your applications.

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race car welding

Drive fast, weld right

November 7, 2006

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Of all the fabrication tools necessary to build -- and repair -- race cars, welding equipment is one of the most essential. To keep a race car together, safe for drivers, and at its competitive best, welding and metallurgy come into play every day in the motorsports industry.

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hybrid-welding-diagram

Joining GMAW and GTAW

November 7, 2006

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One form of hybrid welding combines both GMAW with a GTAW process in a welding torch. An electronic interface unit containing a plasma power supply controls the hybrid process. Research has indicated that such an approach to welding leads to faster welding times, deep penetration, and cleaner welds when compared with conventional GMAW technology.

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Starting a portable GTAW business Part IV: Stainless steel, aluminum tips

September 12, 2006

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This article, the last of a four-part series about establishing a portable GTAW business, covers helpful tips for working with stainless steel and aluminum, including weld prep and the proper welding techniques. It also offers advice about hiring help and purchasing liability insurance for your business.

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Improve your GTAW in 3 steps

September 12, 2006

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Once you know some basic information about the equipment on the front of your GTAW torch, you can get the right parts for your application and start improving your welding performance.

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GMAW guns: More than a commodity

September 12, 2006

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Many welders think of GMAW guns as just a commodity. However, all of the parts in a GMAW gun have a direct impact on the time it takes to make a weld and its quality.

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Starting a portable GTAW business

September 12, 2006

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Thinking about starting your own portable GTAW business? This installment in a series about this topic focuses on the potential customer base and the welding repair needs of specific segments. It also offers pricing tips for various jobs.

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