Rotor stacking refers to the precise assembly of bladed discs into the turbine's central rotating shaft.
This process is pivotal, ensuring the rotor's structural integrity, flawless efficiency, and perfect balance to withstand the extreme speeds, intense temperatures, and mechanical stresses it encounters during operation.
Once blading is completed, the discs are stacked vertically, gradually forming the rotor.
The discs are connected using Hirth couplings and secured by an 8-meter-long tie rod, which is screwed into both ends of the rotor.
To enable the rotor to spin at 3000 rpm during operation, the tie rod is tightened with a force exceeding 2000 tonnes.
After assembly, the rotor is carefully tilted to a horizontal position through a complex maneuver involving a crane and a tilting system.
