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• Evaluation of reformer tubes degradation after long term operation

  Publikacja

  • J. Łabanowski

  - Journal of Achievements in Materials and Manufacturing Engineering - Rok 2010

  Purpose of this paper is to show the effect of long-term service at elevated temperatures on microstructural changes of cast steel reformer tubes made of the alloy IN-519 (24%Cr, 24%Ni, Nb). The relationship between mechanical properties and microstructure degradation is discussed. Investigations were performed on five tubes taken from ammonia reformer furnace. Tubes worked at temperature of 880C and 3,2 MPa pressure. The operation...