Peculiarities of the technology of assembly, electron-beam welding and heat treatment of large-sized drums of the compressor rotor of gas-turbine power plants are considered. Values of residual welding strains in the rotor are given. Mechanicalproperties of welded joints and parent metal were determined. The technology for the fabrication of drums of the rotor 1500...1900 mm in diameter and 950 mm high with the finished slots for blades by RB welding was developed.
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