Analysis of damage of superheaters from steel 12Kh1MF in operation
Main cases of damage of superheaters from steel 12Kh1MF due to disturbance of the process of production of the tubes and due to creep, thermal fatigue, and short-term superheating are considered. The methods of metallographic analysis and scanning electron microscopy are used to determine the special features of their microstructure and fracture surfaces. The results obtained are used to develop an algorithm for detecting the causes of damage in superheaters produced from heat-resistant pearlitic steels.
Key wordsfractured tubes process flaws creep thermal fatigue superheating
- 1.I. I. Mints, L. E. Khodykina, and I. G. Logvinenko, Damage and Production Process Defects in the Metal of High-Temperature Pipelines [in Russian], UralVTI, Tsitsero, Chelyabinsk (2009), 163 p.Google Scholar
- 2.T. G. Berezina, N. V. Bugay, and I. I. Trunin, Diagnostics and Prediction of Endurance of the Metal of Heat Power Plants [in Russian], Tekhnika, Kiev (1991), 120 p.Google Scholar
- 3.T. G. Berezina, Diagnostics of Failure Causes in Parts of Power Equipment, A Course of Lectures [in Russian], ChGTU, Chelyabinsk (1997), 145 p.Google Scholar