To the question of classification of combined working metals processes during the analysis of kinematics of the deformation zone

Authors

  • І. V. Dobrov National Metallurgical Academy of Ukraine, Dnipro, Ukraine
  • А. V. Semichev National Metallurgical Academy of Ukraine, Dnipro, Ukraine
  • E. P. Morozenko National Metallurgical Academy of Ukraine, Dnipro, Ukraine

DOI:

https://doi.org/10.20535/2521-1943.2019.86.178922

Keywords:

stock, rolling, rolling with tension, rolling with support, pressing in the die, pressing in rollers, rolling-pressing, deformation zone, neutral section, neutral angle.

Abstract

Abstract. Theoretical and experimental studies of the kinematic parameters of the deformation zone during rolling and pressing in the rollers were performed. The general patterns and characteristic features of the movement of deformable layers of metal in the deformation zone for each of these methods of processing metals by pressure are established, which allows to classify these processes, as well as the combined rolling-extrusion process depending on the position of the neutral section in the deformation zone.

Purpose. Theoretical and experimental studies of the kinematic parameters of stationary deformation zones which clarify the classification of combined working metals processes.

Approach. When pressing in rollers, the studied material layer at the exit from the deformation zone represents a curve that has two convexities symmetrical with respect to the axis of symmetry of the deformation zone and concavity along the axis of symmetry of the deformation zone. During rolling the layer at the exit from the deformation zone represents a concave curve. When rolling-pressing the shape of the curve at the exit of the deformation zone has a slight crowning near the axis of symmetry of the deformation zone.

Findings. Based on the theoretical and experimental research of the kinematics of the deformation zone, the characteristic features of the rolling, pressing and combined rolling-pressing processes are defined, which are based on the value of the neutral angle. This angle determines the slow and leading zones of the stock in the deformation zone during these processes.

References

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Published

2019-11-26

How to Cite

[1]
Dobrov І. V., Semichev А. V., and E. P. Morozenko, “To the question of classification of combined working metals processes during the analysis of kinematics of the deformation zone”, Mech. Adv. Technol., no. 2(86), pp. 77–83, Nov. 2019.

Issue

No. 2(86) (2019)

Section

Up-to-date machines and the technologies of mechanical engineering

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