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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Innovative workholding streamlines

Innovative workholding streamlines welding at Vermeer

February 12, 2008

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Lean manufacturing drove equipment manufacturer Vermeer Corp. to organize weld cells for maximum productivity. In each cell, fixtures are placed within the welder's reach, and equipment is placed for optimal ergonomics.

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Benchtop Positioner

Putting the spin on benchtop positioners for tube and pipe welding

January 29, 2008

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Welding around any kind of circular piece can be a challenge. To make a fillet weld in the horizontal position, you will have to maneuver around the workbench, maintaining a constant arc if you wish to make a continuous weld. This type of work may be acceptable if you need only a few pieces, but can become tedious on production runs. One solution is to rotate the workpiece past the welding arc with a rotating welding positioner, such as a small- to medium-size benchtop machine.

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Flux cored welding

Start with the basics: Understanding flux-cored wires

January 15, 2008

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Arming yourself with basic information about flux-cored wires can help you decide if these consumables are right for your welding application. Available in gas-shielded and self-shielded, flux-cored wires require less skill to use than other filler metals and commonly are used for general fabrication, pressure vessels, petrochemical piping, and heavy-equipment manufacturing

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Photo of damaged shaft

Salvaging damaged shafts

January 15, 2008

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Shafts are critical components of many machines, and a damaged shaft can hamper or halt production. Some failed shafts can be repaired and others can't. This article can help you determine which can be repaired and what to consider when attempting repairs.

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Why in the heck would you want to weld?

January 15, 2008

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Two years ago, welding expert and reader-favorite author Marty Rice took a hiatus from writing for thefabricator.com. Marty has returned, and in this, his first article for 2008, he discusses why he welds and offers insights that may help others decide if welding is a viable career choice.

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GTAW adjustable output frequency

What's your frequency

January 15, 2008

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More knowledge about adjustable-output frequency has played a significant role in the development of new technologies that have made GTAW applications more reliable and adaptable.

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Vertical smaw

Vertical SMAW: It's a stick up

January 15, 2008

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Stick welding on vertical surfaces is an important and in-demand skill. Luckily, a few tips can help make a welder a much more valuable resource in the fabricating shop.

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GTAW welder

The whats, whys, and whens of GTAW

November 6, 2007

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More difficult to learn than some welding processes, gas tungsten arc welding (GTAW) can be used to weld a greater range of materials than most other processes. This article explains GTAW, examines its advantages and disadvantages, describes appropriate and inappropriate applications, and discusses how important cleanliness is in GTAW

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Laser welding machine

9-1-1: Weld Emergency!

November 6, 2007

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Toolweld Inc., a microwelding shop run by a father/son duo, faces the challenges of providing quality welds while working against the clock. The shop utilizes both micro-GTAW and laser equipment to meet the demands of a variety of customers.

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Image of Penske Welder

Up to speed

November 6, 2007

The success of a racecar depends heavily on the quality of its welds. The welding team for Penske Racing's NASCAR® automobiles must stay on top of their game to ensure that their vehicle is not only fast but safe. This article provides a brief look at Penske Racing and describes how its welders push toward the fast track to success and safety.

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Metal Pier

Holding up under 'pier' pressure

November 6, 2007

A manufacturer and installer of steel docks in Ontario, Canada, purchased new welding equipment that gave the company increased reliability in adverse weather conditions.

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Orbitally welded stainless steel

Orbital welding of stainless steel pipe for water systems

October 9, 2007

Needing to provide a product line with standard, repeatable, and interchangeable components, American Water Technology, a manufacturer of water treatment systems, integrated stainless steel tubing and orbital welding.

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Arc Welding 101: Don't underestimate welding vocab

September 11, 2007

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Q: I was recently involved in a discussion about a joint discontinuity. We were trying to determine whether it could be considered undercut or underfill. The weld did not fill the butt joint for the entire V-groove length. Some guys classified the melted-away edge of the joint as undercut; I...

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Bernard Welder Image

Great welds need the right gas

August 22, 2007

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Using an inappropriate gas mixture and consumables for a particular GMAW application can cause porosity and excessive spatter, factors that diminish weld quality. Which gases work best with which materials? Why is nozzle selection important? This article addresses these and other questions about GMAW gas and consumables.

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Wave forms diagram

Gaining control of resistance welding

August 8, 2007

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By providing time-based waveform data on current, voltage, resistance, power, force, and displacement—as well as peak and RMS values—external weld monitors are able to provide the necessary data that can be used to understand, optimize, and benchmark the resistance welding process and verify accompanying equipment

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