Research and Design of Polynomial Short Stroke Control Curve for Roughing Process

Abstract

A numerical simulation model for vertical-horizontal rolling process in roughing trains is built according to 3-D rigid-plastic finite element method (FEM), which is validated by comparing the simulation results with measured ones of industrial production. The principle of width deviation appearing on head and tail of slab is investigated by the finite element (FE) simulations. A new polynomial short stroke control (SSC) model is developed based on the comprehensive simulation results and the analyzed results show that, at the aspect of width control, the new SSC model is more effective than the two line one.

Model‐Based Optimization of Short Stroke Control in Roughing Mills

“…Feasible industrial solutions allow parameterizations of SSC curves with few parameters, for example, additional gap openings at three or more positions . Those parameters are stored and maintained in tables and selected by the automation system dependent on strip material, strip dimensions, and vertical draft.…”