Purpose: This work is devoted to definition of the most rational form of pre-calibers at rolling of reinforcing steel. The study was done using of computer modeling in the program “DEFORM-3D”. Design/methodology/approach: For definition of rational forms of calibers were studied following calibers: one-radius oval, flat oval with double concavity and smooth barrel. Findings: For the study as the basic parameters were chosen equivalent strain and deformation force. On the basis of comparative analysis of these parameters was revealed that the most rational form at rolling of reinforcing steel is pre-caliber in the form of flat oval with double concavity, because when rolling it in procurement is implemented the distribution of deformation in the horizontal to the vertical directions. Research limitations/implications: In order to evaluate the impact of forms of pre-fine caliber on strain state, were made the single simulation, that is, the model is included only the pre-fine caliber. Originality/value: Great interest is the shape and size of pre-fine calibers, after which metal gets to finish caliber, where is formed the final profile.
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