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Comparing air welds to underwater welds. (Senior Division).

The purpose of my project is to compare the solidification rate of underwater wet welds with air welds performed with an E6013 type electrode bent to 17[degrees], 25[degrees], or 33[degrees] angle. The processes that I am using to determine the comparisons are as follows: Air Welding, Waterproofing Electrodes, Underwater Wet Welding, Photomacrographs, Abrasive Cutoff, Preparing Coupons for Polishing, Polishing, Etching, Photomicrographs, Micro Hardness Testing, and Transverse Hardness Testing. I conclude that air welds had higher solidification rates, smaller columnar grains, and were softer. Underwater wet welds solidified the slowest, had the largest columnar grains, and were the hardest.

Jessica Caver, Woodlin School.
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Author:Caver, Jessica
Publication:Journal of the Colorado-Wyoming Academy of Science
Article Type:Brief Article
Geographic Code:1USA
Date:Apr 1, 2002
Words:105
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