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Failure Analysis of Radiant Tube Burners in Continuous Annealing Line (CAL) of an Integrated Steel Plant

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Abstract

Failure analysis of radiant tube burners (ACI HK 40 with composition ~25 wt.% Cr, ~20 wt.% Ni) removed from a continuous annealing line (CAL) of a cold rolling mill (CRM) of an integrated steel plant was performed using optical microscopy (OM), scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and microhardness measurements. Studies revealed that the failures were mainly attributed to combined influences of creep and carburization-assisted localized oxidative attack. A suitable heat-resisting cast austenitic stainless steel was identified as a candidate alloy to replace the previously used ACI HK 40 alloy.

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Acknowledgments

The authors wish to express their sincere gratitude to Mr. A. S. Mathur, Executive Director Incharge and Dr. D. Mukerjee, Executive Director of Research and Development Center for Iron and Steel, Steel Authority of India Ltd. for granting them permission to publish this research article.

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Authors and Affiliations

  1. Chemical Analysis and Corrosion Engineering Group, R&D Centre for Iron and Steel, Steel Authority of India Ltd, Ranchi, 834002, India

    P. Saravanan, Gadadhar Sahoo, S. Srikanth & K. Ravi

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  1. P. Saravanan
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  2. Gadadhar Sahoo
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  3. S. Srikanth
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  4. K. Ravi
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Correspondence to P. Saravanan.

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Saravanan, P., Sahoo, G., Srikanth, S. et al. Failure Analysis of Radiant Tube Burners in Continuous Annealing Line (CAL) of an Integrated Steel Plant. J Fail. Anal. and Preven. 11, 286–292 (2011). https://doi.org/10.1007/s11668-010-9426-8

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  • DOI: https://doi.org/10.1007/s11668-010-9426-8

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