Content tagged with "submerged-arc-welding"
Results: 6
Article
February 9, 2010
Tons of reasons for a new welding positioner
Figure 1 The electric shovels P&H Mining manufactures, such as this one loading copper-bearing ore into a material hauler, can weigh up to 1,200 tons. The dippers on the largest trucks can gather up to 100 tons of material in one swoop. Photos courtesy of P&H Mining Equipment, Milwaukee.... Read more...
Article
January 15, 2009
Keeping welding costs from spiraling out of control
Figure 1
Skyline Steel’s Cartersville, Ga.-based facility has been making spiral pipe with the same mill equipment that was originally installed in 1992.
The large-diameter pipe used for the transmission of gas and oil traditionally has been made using either the longitudinal or... Read more...
Article
July 29, 2008
Submerged arc welding : then and now
Submerged arc welding (SAW) is so named because the weld and arc zone are submerged beneath a blanket of flux. The flux material becomes conductive when it is molten, creating a path for the current to pass between the electrode and the workpiece. The flux blanket prevents spatter and sparks,... Read more...
Article
October 9, 2007
Dealing with Mother Nature's wrath
Protecting a two-mile-long, 10-lane bridge from earthquake damage is not an easy task. Replacing the eastern span of the San Francisco-Oakland Bay Bridge requires the talent and time of numerous design firms and fabricators and tens of thousands of workers. One of the more interesting... Read more...
Article
April 11, 2005
Incorporating beveling economically
It's first important to know why and how beveling is used, and the key is realizing that joint design is process-dependent. In other words, you can't use a certain joint configuration from a book for just any process. Changing your welding process will affect the impact beveling has on... Read more...
Article
July 13, 2004
MIAB welding of thick-walled pipe ends
Various methods are used for welding pipe, including electric shielded metal arc welding (SMAW), submerged arc welding (SAW), and flash end welding. Another efficient process is magnetically impelled arc butt (MIAB) welding. Current technology and equipment allow MIAB welding of pipes with wall... Read more...
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