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Rolling hot-deformed pipe on a stub mandrel

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Abstract

A new method of rolling hot-deformed pipe on an automatic tandem mill consisting of two mills for longitudinal pipe rolling on a stub mandrel is proposed. In this method, the rough tube becomes oval immediately ahead of the rollers in the longitudinal-rolling mills. That ensures uniform filling of the groove and more uniform wall thickness of the pipe. The use of an oval rough tube increases the reduction on the first longitudinal-rolling mill from an elongation ratio of 1.5 to 2 and correspondingly decreases the reduction in the piercing mill. As a result, there is less risk of rolling skin on the outer surface of the pipe.

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Authors and Affiliations

  1. Ural Federal University, Ekaterinburg, Russia

    A. A. Bogatov, D. A. Pavlov & E. A. Pavlova

  2. OJSC Sinarsky Pipe Works, Kamensk-Uralsky, Russia

    S. V. Lipnyagov & V. N. Suvorov

Authors
  1. A. A. Bogatov
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  2. D. A. Pavlov
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  3. S. V. Lipnyagov
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  4. V. N. Suvorov
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  5. E. A. Pavlova
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Corresponding author

Correspondence to D. A. Pavlov.

Additional information

Original Russian Text © A.A. Bogatov, D.A. Pavlov, S.V. Lipnyagov, V.N. Suvorov, E.A. Pavlova, 2014, published in “Stal’,” 2014, No. 12, pp. 49–51.

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Bogatov, A.A., Pavlov, D.A., Lipnyagov, S.V. et al. Rolling hot-deformed pipe on a stub mandrel. Steel Transl. 44, 912–915 (2014). https://doi.org/10.3103/S0967091214120055

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  • DOI: https://doi.org/10.3103/S0967091214120055

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