Temat: tarcza turbiny - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Closed die forging of turbine disc to fix blades fromInconel®718
Kucie matrycowe tarczy turbiny do mocowania łopatek ze stopu Inconel®718
Autorzy:: Chyła, P.
Łukaszek-Sołek, A.
Bednarek, S.
Powiązania:: https://bibliotekanauki.pl/articles/263941.pdf
Data publikacji:: 2011
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: tarcza turbiny
kucie matrycowe
Inconel 718
modelowanie numeryczne
turbine disc
closed die forging
InconelŽ718
numerical modelling
Opis:: In the paper numerical analysis of closed-die forging process of turbine disc to fix blades was presented. Forging technologies which take into account conventional and isothermal boundary conditions were analysed. Forging processes were lead as one stage or as two stages - with initial upsetting. In the analysis additional influence of lubrication conditions on the process parameters was taken into account.
W artykule przedstawiono analizę numeryczną alternatywnych sposobów kucia tarczy turbiny do mocowania łopatek. Przeanalizowano technologie kucia z uwzględnieniem warunków konwencjonalnych i izotermicznych. Proces prowadzono jako jednozabiegowy lub dwuzabiegowy - ze wstępnym spęczeniem. W analizie uwzględniono dodatkowo wpływ warunków smarowania na parametry procesu.
Źródło:: Metallurgy and Foundry Engineering; 2011, 37, 2; 151-158
1230-2325
2300-8377
Pojawia się w:: Metallurgy and Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The quality assurance of cast and wrought aero jet engine components made from Ni-base superalloys with using of quantitative metallography methods and alloys lifetime prediction
Autorzy:: Belan, Juraj
Kuchariková, Lenka
Mazur, Magdalena
Tillová, Eva
Hanusová, Patrícia
Powiązania:: https://bibliotekanauki.pl/articles/104037.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: quality assurance
cast Ni-base superalloys
wrought Ni-base superalloys
turbine blades
turbine disc
quantitative metallography
zapewnienie jakości
superstopy na bazie Ni
łopatki turbin
tarcza turbiny
metalografia ilościowa
Opis:: The Ni-base superalloys are used in the aircraft industry for the production of aero engine most stressed parts, turbine blades or turbine discs. Quality of aero jet engine components has a significant influence on the overall lifetime of a jet engine as itself as well as the whole airplane. From this reason a dendrite arm spacing, grain size, morphology, number and value of γ' - phase are very important structural characteristics for blade or discs lifetime prediction. The methods of quantitative metallography are very often used for evaluation of structural characteristics mentioned above. The high-temperature effect on structural characteristics and application of quantitative methods evaluation are presented in this paper. The two different groups of Ni-base alloys have been used as experimental material: cast alloys ZhS6K and IN713LC, which are used for small turbine blades production and wrought alloys EI 698VD and EI 929, which are used for turbine disc production. Selected alloys have been evaluated in the starting stage and after applied heattreatment at 850°C for 24 hrs. This applied heat-treatment causes structural changes in all alloys groups. In cast alloy dendritic structure is degraded and gamma prime average size has grown what has a negative influence on turbine blade creep rupture life. Wrought alloys show partially grain boundary melting and grain size changed due to recrystallization what causes mechanical properties decreasing - ultimate tensile strength mainly.
Źródło:: Quality Production Improvement - QPI; 2019, 1, 1; 222-229
2657-8603
Pojawia się w:: Quality Production Improvement - QPI
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Theoretical investigation of stresses induced at blade mounting locations in steam turbine rotor system
Autorzy:: Prasad, D. K.
Ramana, K. V.
Rao, N. M.
Powiązania:: https://bibliotekanauki.pl/articles/947280.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: tarcza wirnika
wirnik turbiny parowej
naprężenie styczne
rotor disc
radial stress
tangential stress
steam turbine rotors
Opis:: One of the most common incipient losses of integrity in mechanical structures is the development and propagation of cracks. Especially in rotating members like steam turbine rotors etc. cracks, because of their potential, cause catastrophic failures and are a grave threat to an uninterrupted operation and performance. A crack may propagate from some small imperfections on the surface of the body or inside of the material and it is most likely to appear in correspondence to high stress concentration. Crack propagation path is generally determined by the direction of maximum stress or by the minimum material strength. Hence determination of stresses induced has been the focus of attention for many researchers. In the present work, development of a mathematical model to determine the stresses induced in a rotating disc of varying thickness is studied. This model is applied to a steam turbine rotor disc to determine the induced stresses and radial deflection. The mathematical modeling results are validated with the results obtained using Ansys package. The results of the present study will be useful in diagnosing the location and magnitude of maximum stress induced in the turbine rotor disc and stress intensity factor due to the presence of crack.
Źródło:: International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 295-307
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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