Scaling of Steam Turbine Control Valve Guidance Pins
-
A. Neidel
,
E. Cagliyan
Erhan Cagliyan completed training as a state-certified technical assistant for metallography and physical materials analysis at the Lette-Verein in Berlin. For the last 6 years he has been working in the laboratory of the Siemens gas turbine plant in Berlin, where the main focus of his work is damage analysis, quantitative image analysis, microstructure characterization with the field emission scanning electron microscope and X-ray fluorescence analysis.
Boromir Fischer Completed an apprenticeship as a state-certified technical assistant for metallography and physical materials analysis at the Lette-Verein in Berlin. For more than 10 years, he has been a member of staff in the metallography laboratory of the Siemens gas turbine plant in Berlin, where the focus of his work is failure analysis and microstructure investigations using the field emission scanning electron microscope.
Abstract
Severe scaling caused the guiding pin of two control valves of a smaller industrial steam turbine to seize which thus led to a malfunction. The customer sought clarification on whether the oxidation products are really common scale. This could be confirmed.
Kurzfassung
Die Führungszapfen zweier Regelventile einer kleineren Industriedampfturbine waren wegen starker Verzunderung festgegangen und hatten so eine Störung verursacht. Auf Kundenwunsch sollte geklärt werden, ob es sich bei den Oxidationsprodukten tatsächlich um schlichten Zunder handelte. Dies konnte bestätigt werden.
About the authors
Erhan Cagliyan completed training as a state-certified technical assistant for metallography and physical materials analysis at the Lette-Verein in Berlin. For the last 6 years he has been working in the laboratory of the Siemens gas turbine plant in Berlin, where the main focus of his work is damage analysis, quantitative image analysis, microstructure characterization with the field emission scanning electron microscope and X-ray fluorescence analysis.
Boromir Fischer Completed an apprenticeship as a state-certified technical assistant for metallography and physical materials analysis at the Lette-Verein in Berlin. For more than 10 years, he has been a member of staff in the metallography laboratory of the Siemens gas turbine plant in Berlin, where the focus of his work is failure analysis and microstructure investigations using the field emission scanning electron microscope.
References / Literatur
[1] Neidel, A.; Cagliyan, E.; Fischer, B.: Interner Bericht BLN MT/2014/0341r, Berlin, 30.07. 2014Suche in Google Scholar
[2] Eberhardt, H.; Scholz, I.: Interner Bericht PM SSC PI/2014/76716–0 eb Rev. A, Görlitz, 22.04.2014Suche in Google Scholar
[3] Pohl, M.: Pers. Mitt., Berlin 25.07.2014Suche in Google Scholar
[4] Hartanto, V.: Pers. Mitt., Berlin 23.07.2014Suche in Google Scholar
[5] Seminar “Schadensanalyse in der Kraftwerkstechnik”, VGB PowerTech, Essen 2011Suche in Google Scholar
[6] VDI-Richtlinie 3822 Blatt 5, Schadensanalyse – Schäden durch tribologische Beanspruchungen, Januar 1999 (zurückgezogen Juni 2017).Suche in Google Scholar
© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Contents
- Editorial
- Effect of Heat Treatment on the Microstructure of Cast Martensitic Stainless Steel
- Vibratory Polishing – A Preparation Technique for Demanding Tasks in Microstructural Characterization
- Preparation Methods for Lower Bainite after a Continuous Austempering Treatment of Thin Sheets of the Eutectoid Cold Work Steel 80CrV2 (1.2235)
- Scaling of Steam Turbine Control Valve Guidance Pins
- Picture of the Month
- Picture of the Month
- PM-News
- PM-News
- Meeting Diary
- Meeting Diary
Artikel in diesem Heft
- Contents
- Editorial
- Effect of Heat Treatment on the Microstructure of Cast Martensitic Stainless Steel
- Vibratory Polishing – A Preparation Technique for Demanding Tasks in Microstructural Characterization
- Preparation Methods for Lower Bainite after a Continuous Austempering Treatment of Thin Sheets of the Eutectoid Cold Work Steel 80CrV2 (1.2235)
- Scaling of Steam Turbine Control Valve Guidance Pins
- Picture of the Month
- Picture of the Month
- PM-News
- PM-News
- Meeting Diary
- Meeting Diary
