The Deformation Zone Geometrical Factors and its Influence on Deformation Shift Degree for the Axial Zone of Rolled High Bars  Full text 

B. Sereda, I. Kruglyak., A. Kovalenko, D. Sereda, T. Vasilchenko

Dept. of Material Science & Metal Forming, Zaporizhzhzya State Engineering Academy
Zaporizhzhya, Ukraine

UDC 621.771

Metall. Min. Ind.,  2011, Vol. 3, No. 7, pp. 102-106

Abstract

Data storage about characteristics of the tensely-deformed condition of the rolling metal for various combinations of the geometrical factors for the deformation zone while using results of the planned experiments is reasonable to carry them out, approximating them in the view of regressional differences. During seven-factorial experiment the Λ plasticity criterion was founded. Results of approximation of one of the basic integrated indicators degree the deformation of an axial zone shift of depending on geometrical factors of the deformation have been considered. It is received that the greatest influence on Λ in the investigated interval of the variation for deformation zone factors renders relative cogging of samples. The given models can be used by development work of reduction modes and blooming of thick sheet rolling mills providing intensive development of metal structure and (or) the minimum probability defect production as a result of its discontinuity.

Keywords: ROLLING, BAR, FACTOR, DEFORMATION, DEFORMATION SHIFT DEGREE