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Continuous rolls of long products can be counted among the most efficient processes to obtain a finished product with high mechanical and strength properties and good surface quality in a narrow range of dimensional tolerances [1]. The dimensional accuracy of the product depends on the shapes of passes the cooperating sequentially. During operation, these passes are worn out, which affects the dimensional accuracy of the finished product and the rolling process [2, 3, 4, 5]. The most common type of wear in plastic working processes is abrasive wear due to the friction between the working surface of the roll and the rolled material. The Archard model is often used to describe this type of wear [6]. The process of ribbed bar rolling with longitudinal band separation is characterized by intensive wear of the rolls with slitting passes. The aim of the study was to determine the influence of the slitting passes system applied to their wear in the three-strand rolling of ribbed bars with a diameter of 16 mm. Theoretical studies included both the classic slitting passes with two grooves and the new layout using three slitting grooves. Numerical modeling of the rolling process was carried out using the MES-based Forge2011® computer software. The quantitative wear of slitting passes was determined on the basis of the method developed in [7, 8].

Influence of the slitting passes system on the slitting pass wear during the bars rolling process