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The relationship between the rolling force and the initial thickness of the Al-Mg-Li
sheet preform for thicknesses of 1.8 mm and 4.8 mm was shown for cold rolling prequenched and artificial aging. Samples with a thickness of 7.3 mm were obtained by hot
rolling with cooling from the deformation temperature. Thermoanalytical support of the
rolling process is carried out by the method of temperature analysis based on isothermal
discrete scanning (IDS) data. It gives the connection of effort with internal temperature
distributions, which have general patterns of properties, regardless of the complexity of the
structure and composition of the material. The presence of periodicity and steady-state
temperatures after IDS makes it possible to partition the results of the temperature scanning of
the samples into sections. As a result, it is possible to improve the accuracy of estimating the
effect of the initial thickness of the workpiece on the force for each of the passes during cold
rolling, without correction for the thermal or technological past.
Keywords: Al-Mg-Li sheet, cold rolling, temperature analysis |
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