Research of Deformation Process Control of Generator’s Retaining Rings on Hydraulic Bulging Strengthening Technology

Abstract:

The hydraulic bulging strengthening technology is a kind of strengthening technology of large generator’s retaining ring. In the right punch working angle and sealing pressure of equipment, the ring billet is deformed uniformly by high pressure water. The experiment in 5MN oil-hydraulic machine proves that the ring billet is deformed uniformly while the punch working angle is 60° and the pressure between the punch and the rings is 1MN. When the internal and external diameter deformation of the ring billet is 8.5% and 14.0%, the external generatrices of the ring are nearly line. The ring billet is 1/5 of 300MW18-18 steel retaining ring. It may improve productivity to measure real-time thickness of the ring billet with ultrasound sensors and control pressure of the oil-hydraulic machine and ultra-high pressure pump with 80c51.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 970-974
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.970
• Online since: October 2010
• Authors: Xian Ling Zhao, Jian Sheng Liu, Wen Wu He
• Keywords: Echo-Pulse Method, Generator’s Retaining Ring, Hydraulic Bulging Strengthening, Stepper Motor

References

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[4] X.G. Wang and J.J. Chang: Chinese Journal of Mechanical Engineering, Vol. 23 (2010) No. 1, pp.129-134. Fig. 5 The final bulging size and material object.