Comprehensive comparison and analysis on hollow rotor and solid rotor was carried out
from such aspects as service life
reliability
stress corrosion and maintenance
to discuss whether it is necessary to machine center hole for turbine rotors.The results show that
the hollow rotor has a certain risk and unreliability in operation and maintenance aspects.For low pressure rotors in large scale thermal power units and turbine rotors in nuclear power plants
non-hollow rotor should be applied as much as possible
while for high pressure rotors in thermal power units
considering of the creep effect
several factors should be comprehensively regarded.