Electrohydropulse treatment of metal structures for residual stress relief
INSTITUTE OF PULSE PROCESSES AND TECHNOLOGIES
NATIONAL ACADEMY OF SCIENCE OF UKRAINE
Institute of Pulse Processes and Technologies of NAS of Ukraine. All rights reserved.
OF METAL STRUCTURES
FOR RESIDUAL STRESS RELIEF
High-performance decrease (by 50-70%) of residual stresses in welded and cast metal work and structural strengthening of joint welds.
Metal structure treatment by repeated pressure pulses generated by high-voltage electric discharges in water.
environmental cleanness of the method in combination with successful treatment;
amplification of structure-sensitive characteristics of metal work (long-term strength, endurance, stress-corrosion cracking resistance);
productivity to 2... 6 t/h;
power input is an order of magnitude less than during heat treatment;
metal does nott soften;
metal fatigue range of welded joints is by 30% increased.
possibility to reduce residual stresses in welded structures and directional parts from metals having a various expansion coefficient;
scaling is excluded, and, thus, mechanical purification against scaling is unnecessary, and this prevents metal losses;
complex use of this technology with the technology of electrohydraulic casting purification allows for combining the purification operations and residual stress relief in castings.
At enterprises of the CIS and Ukraine.
Phones: +38 (0512) 58-71-25, +38 (0512) 58-71-28.
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