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Study of Reasons for Damage of Steel 45Kh25N20S Centrifugally-Cast Tubes in Reaction-Heater Furnaces

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Chemical and Petroleum Engineering Aims and scope

Factors are analyzed causing damage of reaction-heater furnace centrifugally-cast tubes (of steel 45Kh25N20S). On the basis of a loading model the stress-strained state of a tube close to annular welded joints is calculated and reasons are explained for nonfulfillment of strength conditions due to imperfection of the technology for pipe manufacture and a lack of specifications for the upper strength limit of welded joints with respect to basic metal. Recommendations are provided for preventing tube damage.

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Authors and Affiliations

  1. All-Russian Scientific Research and Construction Institute of Equipment for Oil Refining and Petrochemical Industry, Volgograd, Russia

    Yu. A. Bad’in

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  1. Yu. A. Bad’in
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Correspondence to Yu. A. Bad’in.

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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, Vol. 54, No. 7, pp. 10–14, July, 2018.

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Bad’in, Y.A. Study of Reasons for Damage of Steel 45Kh25N20S Centrifugally-Cast Tubes in Reaction-Heater Furnaces. Chem Petrol Eng 54, 472–481 (2018). https://doi.org/10.1007/s10556-018-0504-1

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  • DOI: https://doi.org/10.1007/s10556-018-0504-1

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