Experimental and theoretical analysis of roll flattening in the deformation zone for ultra-thin strip rolling

Abstract

For ultra-thin strip rolling, the conventional rolling force models are no longer applicable. To obtain accurate rolling force in the shape and gauge control process, Fleck proposed a new roll flattening model. In this study, experimental analysis, finite element simulation, and theoretical analysis were conducted to evaluate the Fleck model. The experiments and simulations show a clear neutral zone in the deformation zone with decreasing strip thickness. The finite element simulation results show that the proportion of the elastic unloading zone is small, when an elastic unloading phenomenon appears in the neutral zone. Thus, to simplify the rolling force model, the effect of an elastic zone could be ignored. Based on this finding, we develop a rolling force model with quick calculation speed, high precision, and convenient online application. Finally, the accuracy of the simplified model is verified by the measured rolling force.

Experimental Research for the Establishment of the Optimal Forging and Heat Treatment Technical Parameters for Special Purpose Forged Semi-Finishes

“…10CrMo9-10 is a high-temperature steel for pressure vessels and the transportation of petroleum products [ 29 , 30 , 31 , 32 ]. The chemical composition of the 10CrMo9-10 steel used in our own research is presented in Table 1 .…”

A Short Review on the Finite Element Method for Asymmetric Rolling Processes

“…However, no asymmetry condition was applied to the model. Similarly, Ren and coworkers [54] presented experimental and numerical analysis for ultra-thin strip rolled steel (with 0.3 mm and 0.1 mm thickness of the hard and soft strips, respectively) using symmetric rolling conditions. They proposed a simplified Fleck model for modeling rolling of the thin strip that has been validated for the measure of the rolling force.…”