Analysis of the power boiler superheater strain-and-stress state under creep conditions
Authors:
- Piotr Duda,
- Łukasz Felkowski,
- Hanna Purzyńska,
- Andrzej Duda
Abstract
The paper presents a procedure for assessing the condition of the current structure of boiler tubes. First, a modified version of the Garofalo equation is proposed to model the strain-and-stress state under creep conditions in Super304H steel. In parallel with the creep model development, the microstructure is examined using SEM and TEM techniques. The Super 304H steel structure is tested for a new material and for the superheater material after 100,000 h of operation. According to the presented description of the tested steel degradation, it is possible to operate the material for another 100,000 h if the design conditions are met. The results show that the conventional approach based on European standards does not exclude the superheater safe operation. However, a more detailed analysis, taking account of additional loads from the pipeline and using the proposed creep equation, proves that the conditions for the superheater safety are not satisfied.
- Record ID
- CUT07a7a37d75344bfba07fd6616343f6ca
- Publication categories
- ;
- Author
- Journal series
- Materials at High Temperatures, ISSN 0960-3409, e-ISSN 1878-6413
- Issue year
- 2019
- Vol
- 36
- No
- 6
- Pages
- 531-539
- Other elements of collation
- schem.; tab.; wykr.; Bibliografia (liczba pozycji) - 18; Oznaczenie streszczenia - Abstr.; Data udostępnienia on-line - 2019-07-29; Numeracja w czasopiśmie - Vol. 36, Iss. 6
- Keywords in English
- steam boilers, boiler tube, creep stress, creep life, creep model, microstructural degradation, failure analysis, FEM modelling
- DOI
- DOI:10.1080/09603409.2019.1648364 Opening in a new tab
- URL
- https://www.tandfonline.com/doi/abs/10.1080/09603409.2019.1648364?journalCode=ymht20 Opening in a new tab
- Related project
- Opracowanie metod identyfikacji nieustalonych zjawisk cieplno-wytrzymałościowych. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- Score (nominal)
- 70
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT07a7a37d75344bfba07fd6616343f6ca/
- URN
urn:pkr-prod:CUT07a7a37d75344bfba07fd6616343f6ca
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.