Content tagged with "porosity"
Results: 8
Article
September 15, 2009
SMAW: A welder's guide
Shielded metal arc welding (SMAW) is the most common form of arc welding. However, creating a good weld is not always easy, especially for a beginner. Unlike gas metal arc welding (GMAW), in which you basically point and shoot, SMAW requires a higher skill level and a mastery of certain... Read more...
Article
September 1, 2009
Article
July 17, 2009
Finding seemingly insignificant flaws
Editor's Note: This article, the second of a two-part series, is adapted from Richard Fisher's paper presented at Metal Matters, March 14-16, 2007, Lake Buena Vista, Fla. © 2007 by the Fabricators & Manufacturers Association Intl. (FMA). Understanding eddy current principles is just the... Read more...
Article
July 17, 2009
Finding seemingly insignificant flaws Part II
Editor's Note: This article, the second of a two-part series, is adapted from Richard Fisher's paper presented at Metal Matters, March 14-16, 2007, Lake Buena Vista, Fla. © 2007 by the Fabricators & Manufacturers Association Intl. (FMA). Understanding eddy current principles is just the... Read more...
Article
January 27, 2009
Don't rule out plasma for cutting aluminum
Plasma cutting isn't new. But like any technology, it has its share of new developments. In any discussion about how to cut metal, it's right up there with laser and waterjet. The technology gets a bad rap, though, when the discussion turns to cutting aluminum.
Plasma cutting has been... Read more...
Article
December 11, 2007
Finding poor-diffusion bonds in ferrous, nonferrous tubes
Figure 1
A common problem in laser welding is misalignment between the laser beam and the tube's seam. Two small portions of the weld seam, near the inner and outer walls, benefited from the weld heat; however, even in these locations, fusion likely wasn't thorough. Photomicrograph of... 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
July 11, 2006
Arc welding discontinuities
Common discontinuities include incomplete penetration, undercut, misalignment, and root undercut. Photo courtesy of AlcoTec Wire Corporation, Traverse City, MI. Quality by Design A weldment's service performance is determined largely at the design stage. This is the time to decide... Read more...
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