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Rolling and Heat Treatment
ArticleName Optimization of roll calibrations for beam channel rolling. Part 2. Space of channel gauges
DOI 10.17580/chm.2022.04.05
ArticleAuthor D. L. Shvartz, A. M. Mikhailenko, E. I. Salikhyanova

Ural Federal University, Ekaterinburg, Russia:

D. L. Shvartz, Dr. Eng., Associate Professor, Dept. of Metal Forming
A. M. Mikhailenko, Cand. Eng., Associate Professor, Dept. of Metal Forming
E. I. Salikhyanova, Postgraduate Student, Assistant, Dept. of Metal Forming, e-mail:


The optimization of roll pass design for rolling of channels based on the conception of two-stage optimization was realized. Roll pass design is independent functioning system and has two components of optimization: roll pass design scheme and pass schedule. Roll pass design will be considered truly optimal only if it has both an optimal scheme and an optimal pass schedule. During the first-stage optimization (search the optimal scheme of roll pass design), the most important moment is the formation of the “space of channel grooves” as the first space optimization. The above space consists of channel grooves of various types and shapes determined by known from the literature and practice roll pass designs. The “space of channel grooves” must be regularized with the use of the method of classification. As the main features of classification (groove space coordinates), the mostimp ortant geometric and technological features of the grooves were chosen: type of neck, type of actual flanges, type of false flanges, type of groove closure and quantity of rolls constituting the groove. Levels of variation for every criterion of classification have been identified and coded. Every admissible combination of variation levels specifies type and code of particular scheme of channel groove.
Acknowledgements: The reported study was funded by RFBR, project number 20-38-90246.

keywords Rolling of sections, section bar, rolling mill machine, mill roll calibration, grooves, systems theory, system analysis, optimization of the roll calibration, optimization space, criterion of optimality, objective function

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