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.
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.
September 11, 2007 | By Paul Cameron
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...
August 22, 2007 | By Bill Giese
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.
August 8, 2007 | By Geoff Shannon
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
August 8, 2007 | By ESAB Welding & Cutting
The FCAW process in the United States is currently estimated at more than 245 million pounds a year and still growing in popularity and use in all segments of the welding industry. One of the common issues often portrayed as a wire problem, commonly referred to as "birdnesting," is actually due to...
July 10, 2007 | By Bob Hollingsworth
Bob Hollingsworth, a member of Practical Welding Today's advisory board, details the journey of the 2006 Western Washington University Mini Baja vehicle fabrication team and their quest to build a winning off-road, student-designed racing machine.
July 10, 2007
Founded in 1988 in Miami, CMN Steel Fabricators Inc. has carved out a niche for itself in fabricating tubular sections, mainly structural steel and pipe for the waste energy, waste management, and quarry industries. It also performs maintenance during scheduled plant shutdowns. Roughly half of its...
July 10, 2007 | By Amanda Carlson
A welder from Boston makes realistic scupltures depicting boats, motorcycles, cars, and planes using discarded junk found in garbage piles, yard sales, flea markets, and dumps.
July 10, 2007
A Memphis, Tenn., custom fabricator completed the redesign of its welding operations by purchasing and integrating new welding equipment and software to help increase productivity and to diversify its capabilities.
July 10, 2007 | By Mike Crawford
Using SMAW can be just as complicated for the hobbyist as it is for the professional welder. Answering common questions about electrode classification, capability, and how each differs from one another can help ensure success.
July 10, 2007 | By Professor R. Carlisle "Carl" Smith
Becoming a skilled welder involves both hands-on and technical training from secondary and postsecondary instruction. Who should teach what and when to ensure that today's welders have the necessary skills? Longtime welder and welding professor Carl Smith shares his views.
July 10, 2007 | By Elia Levi
Welding can be a rewarding career. To be successful and satisfied in welding or any career requires planning, preparation, and pursuing a job you love. This article provides an overview of welding as a career, describes different opportunities, and lists resources that can help you to become a welder.
June 12, 2007 | By Dean C. Phillips
As manufacturers strive for lower costs and greater efficiencies, they tend to substitute high-strength materials for standard materials. One such high-strength material is ASTM A514/514M-05. Although it is not difficult to weld, joining it successfully requires paying close attention to the preheat temperature, interpass temperature, and filler metal.
May 22, 2007 | By Phil Evans
The prices of materials consumed in your welding shop aren't the only materials-related economic considerations. How you use those materials affects the bottom line. Monitoring compressed-gas usage and looking for areas of waste can improve your shop's financial picture. This article offers practical suggestions for reducing waste.
May 8, 2007 | By Paul Cameron
Q: I am building a 400-gallon paint tank and I'm having trouble with leaks when using gas metal arc welding (GMAW). I'm using a welding machine running on 440. My best results come when running hot 19.5 on the heat and about 21/2 on wire speed. I am using a trimix gas and 0.035-inch 308 wire. The...