Siberian Federal University, Krasnoyarsk, Russia:

I. N. Dovzhenko, Assistant Professor, Chair of Metal Forming
N. N. Dovzhenko, Professor, Chair of Metal Forming
S. B. Sidelnikov, Professor, Head of the Chair of Metal Forming
R. I. Galiev, Assistant Professor, Chair of Metal Forming, e-mail: gri1979@mail.ru

E. V. Gladkov took part in this work.

Based on the finite element analysis for the combined rolling-extrusion process, the stress-strain state, force on the tool, and the moments on the rolls are calculated as a function of the tool temperature and the rotational speed of the rolls. The calculations are performed for an Al – Ti – B system alloy containing 5% titanium and 1% boron, widely used in the industry for melt modification when casting ingots of aluminum alloys. The authors proposed ligature rods from this alloy to be produced by the method of combined rolling-extruding (CRE), which has significant advantages in comparison with the traditional technologies of continuous casting-rolling and discrete extruding. Therefore, for the design of technology and equipment for combined processing, it is necessary to have preliminary design data on the temperature-velocity conditions and energy-force parameters of the metal deformation process. For 3D modeling in a software package SolidWorks® the model of the combined rolling-extruding process was created, which was imported into the package DEFORMTM. The simulation process of producing a rod diameter of 9.5 mm by installing rolls with diameters of 462 mm and a protrusion stream 394 mm with rolling reduction of 50% drawing ratio during extruding 6.2 at the rotation speed of 9 rpm data obtained by the temperature distribution metal, strain rates, normal contact stresses on the tool and internal stresses in the metal. In addition, graphs of the change in the forces and moments of rolling acting on the rolls are plotted, depending on the rotational speed of the rolls and the required power of the drive motor is calculated. The obtained data were used in the design of new industrial equipment for combined rollingextruding of aluminum alloys and experimental studies, which confirmed the adequacy of the obtained modeling results.

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