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.
April 10, 2007 | By Amanda Carlson
A Tennessee artist and welder uses scrap metal parts to create one-of-a-kind metal sculptures.
April 10, 2007 | By Elia Levi
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.
March 13, 2007 | By Myron T. Havis
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.
March 13, 2007 | By Sue DiBianca
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.
February 13, 2007 | By Paul Cameron
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...
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.
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.
January 9, 2007 | By Mike Sammons
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
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.
December 12, 2006 | By Stephanie Vaughan
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.
November 7, 2006 | By Stephanie Vaughan
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.
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.
September 12, 2006 | By Phil Evans
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.
September 12, 2006 | By Jennifer Simpson
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.
September 12, 2006 | By Bill Giese
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.