Heatproof Relaxation of Welding Stresses Openwork Designs of Large Size Ultrasonic Field

Abstract:

Designed experimental setup, and a prototype of the original devices for athermic relaxation of thermal residual stresses in openwork welded constructions of large dimensions for the rational use of energy high-frequency acoustic (ultrasonic) fields, conducted laboratory studies and pilot tests in real conditions of production. Ultrasonic relaxation when welding thin-walled constructions standard openwork rolled steel profiles 10 large dimensions (up to 3 x 10 m). It has been established that with a decrease in the time of ultrasonic relaxation, the efficiency of its use decreases somewhat. Therefore, in an industrial environment, it is advisable to use the duration of ultrasonic treatment in the range of 0.02-0.04 min per mm of weld length.

• Periodical: Solid State Phenomena (Volume 303)
• Pages: 104-110
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.303.104
• Online since: May 2020
• Authors: Nguyen Khanh Toan*, Evgeni Kiselev
• Keywords: Heatproof Relaxation, Residual Stresses, Ultrasound, Weld

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