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Latest Gas tungsten arc welding Stories

2008-09-05 03:00:20

By Chen, Y C Nakata, K Friction stir lap joints of AC4C Al alloy (top sheet) and steel (zinc-coated steel, brushed finish steel, and mirror finish steel) were produced when the friction stir welding tool did not touch the lower steel surface. For zinc coat steel, the strength of joints could reach 97.7 pct of that of steel; for brushed finish steel, the strength was 63.2 pct of that of steel; for mirror finish steel, Al alloy and steel could not be welded. The effect of the surface state of...

2008-08-03 03:00:20

By Brady, M P Yamamoto, Y; Santella, M L; Maziasz, P J; Pint, B A; Liu, C T; Lu, Z P; Bei, H A new family of alumina-forming au.slenitic stainless steels is under development at Oak Ridge National Laboratory for structural use in aggressive oxidizing environments at 600-900[degrees]C. Data obtained to date indicate the potential to achieve superior oxidation resistance compared to conventional Cr^sub 2^O^sub 3^- forming iron- and nickel-based heat-resistant alloys, with creep strength...

2008-07-31 09:01:05

Kaiser Aluminum (NASDAQ:KALU) today announced that the applicable energy surcharge for August shipments of fabricated products will be: 6xxx alloys: $0.048 per pound All other alloys: $0.066 per pound The surcharges are based on a calculation tied to indices provided by the U.S. Department of Energy and are updated on a monthly basis. Customers can view the formulas for calculating surcharges on the Kaiser Aluminum Web...

2008-07-24 03:00:47

By Abe, Hiroshi Watanabe, Yutaka Thermal aging embrittlement of light water reactor (LWR) components made of stainless steel cast has been recognized as a potential degradation issue, and careful attention has been paid to it. Although welds of austenitic stainless steels have gamma-delta duplex micro structure, which is similar to that of the stainless steel cast, examination of the thermal aging characteristics of the stainless steel welds is very limited. In this investigation, two types...

2008-07-18 03:00:39

By Nakajima, Hideo Ide, Takuya Lotus-type porous copper with aligned long cylindrical pores was fabricated by unidirectional solidification in an argon atmosphere. The hydrogen dissolved in molten copper through thermal decomposition of titanium hydride contained in the mold, which then formed hydrogen gas that evolved into the gas pores in the solidified copper. On the other hand, titanium may form oxides in the melt that serve as nucleation sites for insoluble hydrogen. The porosity and...

2008-06-27 09:02:54

BRIDGEVILLE, Pa., June 27, 2008 (PRIME NEWSWIRE) -- Universal Stainless & Alloy Products, Inc. (Nasdaq:USAP) today announced base price increases of 5% to 7% on all tool steel products manufactured at its Bridgeville and Dunkirk facilities. The increase will be effective with all new orders entered on July 1, 2008. Current material and energy surcharges will remain in effect. Chris Zimmer, Vice President of Sales and Marketing, commented, "The price adjustment is necessary to offset the...

2005-11-17 17:34:19

The air in Fallon, Nev. has significantly higher levels of tungsten and cobalt than does the air in neighboring towns, according to a new research report. The research suggests that the metals in the air come from a point source within Fallon, a community of about 8,000 located in Churchill County about 60 miles east of Reno, Nev. The finding that Fallon's air differs from nearby towns might have medical implications. Since 1997, 16 cases of childhood leukemia have been diagnosed in children...

2005-10-13 04:41:37

The use of magnesium alloys in engineering applications is becoming increasingly important as a relatively low density allows savings in energy consumption and therefore reduction in air pollution. An associated reduction in inertia also makes these alloys potential candidates for friction components. Magnesium alloys, however, have low wear resistance and low hardness and sticking or seizure phenomena easily occur with the counter materials such as steel, copper and aluminum alloys. In a...

2005-08-15 20:06:28

NEW YORK (Reuters) - U.S. lawsuits over the health effects of welding fumes, dubbed "the next asbestos" by plaintiffs, are set for a big test this month in an Ohio court case that may determine whether manufacturing companies face billions in claims. Lawyers for thousands of welders, and others exposed to welding fumes, have alleged that manganese fumes, released during welding, cause severe damage to the central nervous system, including Parkinson's disease and Parkinson's-like...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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