Аңдатпа
The paper presents the results of finite-element modelling of asymmetric rolling of a workpiece with a gradient distribution of mechanical properties. To create a gradient distribution of properties, the workpiece was pre-loaded and Vickers microhardness was evaluated. The resulting workpiece model had a microhardness distribution that was close to the experimental values. The workpiece was subjected to both symmetric rolling and asymmetric rolling with an asymmetry coefficient of 1.5, which was achieved by varying the roll speeds (90 and 60 rpm) in two scenarios (90/60 and 60/90). The parameters of the stress-strain state and the rolling force were analyzed. The results showed that asymmetric rolling of a workpiece with a gradient distribution of mechanical properties had only minor differences from symmetric rolling. When the asymmetry coefficient exceeds 3, this factor begins to have a significant impacton the processing unevenness.