Calculation of electric motor power for the straightening machine on billet caster
The cross-section of the billet made with Shaogang No. 4 billet caster was enlarged from 150 mm × 150mm to 160mm × 160mm, so as to meet the market demands and the requirements of rolling process. Some mod- ifications to the caster were therefore needed. Practice showed that the caster could perfom well by adding only a few changes to it, including altering the copper tubes and dummy bar head in the mould, and selecting a suitable motor power for the straightening machine, without replacing any of the major equipments. Both calculation and practice confirmed that the selected power was correct. The successful innovation of the billet caster has brought in an appre- ciable benefits to both the Chrporation and the Steel Works itself.
Abstract This paper presents the results of experimental study of gas turbine rotor of Air craft, Marine, wind turbine rotor etc. The natural frequency of gas turbine rotor using Holzer’s method same are compared with the results that are obtained through a well known software based approach of FFT Analyzer. Rotors employed for transmitting motion are manufacturing using mild steel as it offers better stiffness and economical conditions under damping conditions. Mild steel as it resists tortional loads and bending loads more efficiency are more effectively. In this paper natural frequency of the gas turbine rotor predicted according to numerical results will be compared with experiential results.