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Effect of Kinematic Tension Coefficient on Wall Thickness Variation for Tube/Pipe Rolled in a Reducing Mill

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We describe the results of a study of the longitudinal and circumferential variation in pipe/tube wall thickness as a function of kinematic tension coefficient for pipe/tube passing through three stands of a reduction mill. The study was performed via computer modeling using the DEFORM software. The variation in pipe/tube wall thickness and the mean wall thickness were found to decrease as the kinematic tension coefficient increased, as evidenced by the calculated dispersions, root mean square deviations, and coefficients of variation.

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Notes

  1. The rolling process is assumed to have reached a steady state when the pipe/tube is passing through all of the mill stands. In this case, the rolling speed at each stand approaches the appropriate constant value for each specific tension mode.

  2. The DEFORM postprocessor has the capability to designate between 2 and 1000 nodal points on the inner or outer surface around the circumference of any transverse section through the pipe using the function SV Distribution Between 2 Points. The function State Variables is then used to select Thickness in the Analysis field, and the software calculates the wall thickness of the pipe/tube at the previously selected nodal points. The results can be saved in *.txt format and imported into Microsoft Office Excel, where a statistical analysis can easily be performed.

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This work was performed with the support of Russian Federation Presidential Grant MK-3011.2017.8.

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Authors and Affiliations

  1. Ural Federal University, Ekaterinburg, Russia

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

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  1. D. A. Pavlov
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  2. A. A. Bogatov
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  3. E. A. Pavlova
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Correspondence to D. A. Pavlov.

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Translated from Metallurg, No. 3, pp. 18–20, March, 2018.

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Pavlov, D.A., Bogatov, A.A. & Pavlova, E.A. Effect of Kinematic Tension Coefficient on Wall Thickness Variation for Tube/Pipe Rolled in a Reducing Mill. Metallurgist 62, 203–206 (2018). https://doi.org/10.1007/s11015-018-0645-7

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  • DOI: https://doi.org/10.1007/s11015-018-0645-7

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