Blanks of rotors and disks

For more than thirty years the shops of the enterprise manufacture the blanks of rotors and disks for steam and gas turbines and rotors of turbogenerators. Mastering of the production of rotor forgings led to the development of technologies allowing to attain the deformation processing of metal in sections over 2000mm.

Solid- forged rotors made at the production facilities of the corporation enterprises out of ingots of mass of 180 to 360 t make complete all indigenous turbogenerators of power above 500 MW, these products are successfully exported. Out of ingots of 30 to 142 t mass more than 1000 high pressure cylinder (HPC) rotors and medium pressure cylinder (MPC) rotors were manufactured for steam turbines. The blanks of low-pressure cylinder rotors for turbines of 1000MW power are manufactured out of ingots of 235t mass.

The rotor shaft blanks are made out of wide assortment of steels: 35ХН3МФА, Р2МА (25Х1М1ФА), 30ХН3М1ФА, 26ХН3М2ФА, 26NiCrMoV115 etc.

There is experience of manufacturing the disks for gas turbines of power up to 150 MW out of steels 26ХН3М2ФАА, 26NiCrMoV115 etc.

Maximum parameters of forged blanks of rotors and disks

• rotor shaft length, mm up to 16000
• barrel diameter, mm up to 2000
• disk diameter, mm up to 3200
• disk height, mm up to 500

Maximum weight of forging, t 230

Vessel cowlings, rings

Cowlings for pressure vessels used in nuclear power engineering and petrochemistry are the traditional products of the enterprise. Over two hundred vessel cowlings of large diameters were manufactured at automatic forging facilities AKK-12000.

In early 2001 experimental cowling was forged for a new generation reactor. The cowling was forged out of the 360t ingot of reactor vessel steel of quality 15Х2НМФА. The diameter of cowling was 5580 mm, its height being 3900 mm.