Abstract
Two-high and three-high screw rolling of stainless-steel billets was conducted. Experimental rolling was simulated using DEFORM software. Differences in the way hardness, Cockroft–Latham normalized damage criterion, and rigidity coefficient under stress condition change while two-high and three-high screw rolling were established. Changing of these parameters was investigated in the cross section of the billets at the stationary stage of screw rolling. It was unambiguously shown that, in terms of conducted experiments, there is a tendency for axial fracture while two-high screw rolling, and for ring-shaped fracture while three-high screw rolling. Research has allowed for quantitatively estimating the value of the radius of ring-shaped area for which possible fracture may occur while three-high screw rolling.
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