- Tytuł:
-
Ocena stanu technicznego kap czół uzwojeń wirników generatorów na podstawie pomiarów magnetycznych niestabilności austenitu stali G18H18
Assessment of technical condition of generator rotors end winding caps based on magnetic measurements of instability of G18H18 steel austenite - Autorzy:
-
Żurek, Z.H.
Bizoń, K.
Szudyga, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1372714.pdf
- Data publikacji:
- 2011
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
- Tematy:
-
austenit
stal austenityczna
stal chromowo-manganowa
wirnik
generator
diagnostyka - Opis:
- Austenitic (non-magnetic) steels are used in construction of generator rotors caps and bandages as well as transformers' bandages and bolts. Such steels should be characterized by high specific resistance, magnetic permeability less than 1,5 µr and high mechanical strength. In addition, these properties should not change due to possible mechanical and thermal load conditions. Since nickel austenite (γ→α), is not durable, some nickel is exchanged for manganese. The paper presents results of investigating stability of chromic-manganic austenite of used rotor caps. At present the assessment of caps, technical condition and their serviceability is conducted by ultrasonic wave attenuation tests. The magnetic measurements based on the detection of the instable austenite, which in the mechanical and thermal correlations constitute an alternative for the diagnostic testing and moreover they provide more complete picture of the cap exploitation.
- Źródło:
-
Maszyny Elektryczne: zeszyty problemowe; 2011, 4, 92; 51-54
0239-3646
2084-5618 - Pojawia się w:
- Maszyny Elektryczne: zeszyty problemowe
- Dostawca treści:
- Biblioteka Nauki
Artykuł