Vliv tváření a tepelného zpracování na mikrostrukturu výkovků ze 4% niklových ocelí
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Pavlosková, Šárka
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Vysoká škola báňská - Technická univerzita Ostrava
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Abstract
This thesis focuses on the basic characteristics of 4 % nickel steel used by designers for construction of generator shafts and rotor shafts for low pressure parts of turbines. The target of this work is to define the influence of chemical composition, quality heat treatment and forming on the microstructure and mechanical properties of the forgings designated for the production of low pressure parts of steam turbine rotors.
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Import 19/10/2011
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rotor steel 27NiCrMoV15-6, quality heat treament, tensile test, transit temperature, tempering temperature