Research on disassembly technology of aero-engine rotor interference fit based on induction heating

Abstract To address the issue of damage occurring during the disassembly of interference fit structures in aero engines, a disassembly method based on induction heating is proposed. This paper establishes a transient heat conduction theory for the circular ring and, combined with the thermal expansion theory of the stepped ring, derives a time-varying theoretical model for the interference pressure at the spigot. Based on the above theoretical model, the disassembly time under the influence of different parameters is analyzed. Finally, the theory is successfully used to predict the induction heating disassembly time for a real aero-engine rotor. The research demonstrates that induction heating technology can be applied to the disassembly process of aero-engines, and the theoretical model proposed in this paper can provide guidance for this process.