Content tagged with "shielding-gas"
Results: 12
Article
January 27, 2009
A shielding gas primer for GTAW
Selecting the most economical shielding gas or blend for gas tungsten arc welding (GTAW) must be based on your knowledge of the gases available, volume requirements, applications, and the overall effect the gas has on the welding process.
The primary gases used for GTAW are argon,... Read more...
Article
September 11, 2007
Choosing shielding gases for arc welding
Bead and penetration profile, alloying content, and surface appearance can be improved with the right gas mix.
Welding operators often overlook shielding gases and their individual contributions to the welding process. Shielding gases can influence metal transfer mode, alloy content,... Read more...
Article
August 22, 2007
Great welds need the right gas
Often overlooked as a factor in weld quality, shielding gas can play a significant role in improving, or impeding, welding performance.
If you're reading this, you probably already know that shielding gas plays a critical role in achieving a strong, visually appealing gas metal arc... Read more...
Article
January 9, 2007
7 effects of shielding gas
Although you probably know that shielding gas is essential in most welding procedure specifications, you may pay little attention when you're selecting it. A simple gas composition change can offer potential savings in seven key areas, particularly in gas metal arc welding (GMAW).... Read more...
Article
January 9, 2007
Seeing GTAW through a new lens
Whether you're an experienced or a novice welder, you're probably familiar with the traditional components of a gas tungsten arc welding (GTAW) torch—nozzles, collets and collet bodies, back caps, and tungsten—but you may not know much about gas lenses. Because gas lenses often... Read more...
Article
September 12, 2006
Starting a portable GTAW business
Editor's Note: This is the last part of a four-part series on owning and operating a portable gas tungsten arc welding (GTAW) business. Part I , which appeared in the July/August issue of Practical Welding Today, focused on equipment and self-evaluation; Part II addressed potential... Read more...
Article
July 11, 2006
Article
July 11, 2006
Dam the purge gas and full speed ahead
The first step in making your own water- soluble purge dam with water-soluble paper is to cut the paper in a diameter about 1.3 times the inner diameter of the pipe. Next, slit the edges and insert the paper disk into the pipe with the lip of the paper dam toward the weld area and... Read more...
Article
October 11, 2005
'Star Wars,' move over: Presenting ... the Job Shop Trilogy
Laser welding is the basis of hybrid laser-arc welding. First flat-sheet bed cutting expanded job shop capabilities. Then multiaxis processing came along. Today, even as the dark side squeezes hard on job shop profits, new opportunities for differentiation continue to arise. Enter... Read more...
Article
September 13, 2005
Resolving the challenges of welding coated steels
The increased use of coated (particularly galvanized) steels has resulted in an intensified search for solutions to the problems posed by joining these materials. High levels of spatter and welding fume, weld porosity, and poor bead shape are common. These problems lead to increased postweld... Read more...
Article
February 26, 2004
Efficient shielding gas supply methods
In any welding process, the gas supply system must address basic equipment requirements for the gases at the point of supply and at the point of use. The type of shielding gas required determines the point-of-supply equipment needed, the mode in which the gas can be supplied, and the volume of... Read more...
Article
July 26, 2001
Choosing the right shielding gas and supply system for GMAW
Selecting a gas metal arc welding (GMAW) shielding gas and supply system demands a cost and capability analysis to determine the most economical, efficient solutions for your operation. The cost of the welding gas selected may be a small percentage of the overall process cost, but the... Read more...
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