Title

A TWO-ZONE MODEL OF BROWDENING DURING ROLLING.

Authors

Belsky, Sergey M.; Mazur, Igor P.; Lezhnev, Sergey N.; Panin, Evgeniy A.

Abstract

The paper presents a mathematical model of the process of broadening during rolling of strips and sheets. A feature of the model is the consideration of the metal flow in two zones of plastic deformation hearth: advancing zone and lag zone. The mathematical model is based on the variational principle of minimum total capacity of rolling (the principle of Jourdain). In accordance with this principle, the metal flow velocities in the plastic deformation hearth should be varying. The velocity of the metal transversal flow in the hearth of deformation is represented as a power function of the transversal coordinate. Three parameters are to be varied: value of total broadening, value of broadening in the lag zone and degree of the dependence of transversal metal flow velocity. These parameters are determined by the Ritz method. Comparison of the results of experiments and the mathematical model showed adequacy.

Subjects

ROLLING (Metalwork); MATERIAL plasticity; FLOW velocity; DEFORMATIONS (Mechanics); MATHEMATICAL models

Publication

Journal of Chemical Technology & Metallurgy, 2017, Vol 52, Issue 2, p180

ISSN

1314-7471

Publication type

Academic Journal