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Heat treatment of rollers in the ShPS 30-80 ball-rolling mill at JSC DMPZ

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Steel in Translation Aims and scope

Abstract

In the production of steel rollers, surface decarburization may occur in the course of heating before quenching. Means of more effective protection against such decarburization are considered in the case of the 35X CA steel barrel of wrapped rollers for the ShPS 30-80 ball-rolling mill. A technological protocol for the heat treatment of the rollers is developed. It is shown that protection by means of nitrogen + a carburizing agent + a muffle increases the likelihood of the desired outcome (no decarburized surface layer and hardness no less than 45 HRC) by 31.9% in comparison with protection by means of Barier protective compound + a carburizing agent + a muffle. On average, 450–470 t of grinding balls (diameter 40 mm; hardness groups III and IV) may be rolled in a complete run (to regrinding) on rollers heat-treated by the proposed protocol.

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Authors and Affiliations

  1. JSC “Donetsk Metal Rolling Plant” (DMPZ), Donetsk, Ukraine

    M. M. Lam, A. I. Serov, A. A. Ternavskiy & G. S. Bazarova

  2. Donetsk National Technical University, Donetsk, Ukraine

    Y. N. Smyrnov

Authors
  1. M. M. Lam
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  2. A. I. Serov
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  3. A. A. Ternavskiy
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  4. G. S. Bazarova
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  5. Y. N. Smyrnov
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Corresponding author

Correspondence to Y. N. Smyrnov.

Additional information

Original Russian Text © M.M. Lam, A.I. Serov, A.A. Ternavskiy, G.S. Bazarova, Y.N. Smyrnov, 2015, published in “Stal’,” 2015, No. 10, pp. 34–38.

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Lam, M.M., Serov, A.I., Ternavskiy, A.A. et al. Heat treatment of rollers in the ShPS 30-80 ball-rolling mill at JSC DMPZ. Steel Transl. 45, 784–788 (2015). https://doi.org/10.3103/S0967091215100095

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  • DOI: https://doi.org/10.3103/S0967091215100095

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