Rational reduction and tension schedules and roll profiles for 150/500×400 four-high reversing mill and 350×450 two-high reversing mill were developed and studied to increase the output of strips of high accuracy. For the 150/500×400 mill, increasing the work roll crown from +0.1 to +0.15 mm, the specific back tension from 0.12–0.16 to 0.14–0.18 МРа, and the specific front tension from 0.16–0.18 to 0.18–0.20 MPa appeared to decrease the transverse thickness deviation of strips by 10% compared with the conventional reduction and tension schedules. For the 350×450 mill, increasing the work roll crown from +(0.04–0.07) to +0.09 mm, the specific back tension from 3.3 to 8.7 MPa, and the specific front tension from 4.44 to 10.0 МРа appeared to decrease the transverse thickness deviation of 1-mm strips to 0.039 mm, which may be considered high accuracy. A mathematical model is proposed to analyze the stress-strain state of wavy strips with allowance for hardening. The numerical modeling showed that the tangential stresses are maximum on the upper and lower faces of a 0.5h1 strip, while the radial stresses are maximum in the neutral plane of the strip.
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Translated from Metallurg, No. 7, pp. 77–81, July, 2017.
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Shatalov, R.L., Maksimov, E.A. & Lukash, A.S. Development of Rational Reduction Schedules and Roll Profiles in Simulating the Rolling of Thin Copper Strips. Metallurgist 61, 591–596 (2017). https://doi.org/10.1007/s11015-017-0538-1
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DOI: https://doi.org/10.1007/s11015-017-0538-1