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.
May 8, 2007 | By Steve Barhorst
Metal-cored wire isn't suitable for all welding, but used in appropriate applications, the wire can help improve quality and reduce rework. Some industries best-suited to using metal-cored wire are automotive exhaust and chassis manufacturing, agricultural and heavy equipment manufacturing, and railcar fabrication. This article discusses the wire's properties and how to determine if it is suitable for your operation.
May 8, 2007
A mechanical contractor that fabricates carbon steel water pipe addressed its need for welders, as well as a bottleneck situation originating at its welding station, by converting from shielded metal arc welding (SMAW) to gas metal arc welding (GMAW).
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...
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.
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 Mike Sammons
Joining austenitic stainless steel with GTAW can be tricky, but with a little preparation and care, it can be done successfully. The three main factors are having the right amount of heat input, travel speed, and a shielding gas.
April 10, 2007 | By Vicki Bell
Recent SCAD graduate David Creamer creates beautiful, unique jewelry, including pieces inspired by objects many might find anything but inspirational. This article discusses Creamer's views on materials and describes the process he used to create a provocative bracelet that represents societal elements.
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.
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.
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.
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...
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.
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
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.
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.