Abstract:
The authors
present a hydraulic expanding device of reducing load and put
forward the principle of plastic forming, the calculation
formulae for designing devices and the qualitative analysis for
pressurizing process(1,2,3). In cooperation with the units concerned,
the authors revealed the inherent forming law of the
hydraulically expanded retaining rings by reducing load method
after a series of simulated tests. The laws have direct guide significance on theory and practice for manufacturing 300,000kW
retaining rings(4), as well as the larger one. Some of theoretical
studies and experimental verifications are valuable for this
field.
Key words:
Hydraulic expansion Retaining ring
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