Recent developments for the finite-element modelling of the plastic forming of the metallic materials are described in the paper. The model consists of three parts; mechanical, thermal and microstructural components. First two are described in earlier publication and the focus here is put on the modelling of the microstructural phenomena. Two approaches are described. First uses conventional cl...

<span lang="EN-US">Operation mode of hot rolling mill finishing group stands ArcelorMittal Temirtau JSC electric drives along with thyristor converter units, intended for the supply effect significantly power network parameters. While being carried out experimental research on operating modes supplying mill, some oscillograms were constructed that indicate voltage during process. Analyzin...

The process of thermo-mechanically controlled rolling in the conditions Steckel mill Ferriera Valsider plant was developed for first time hot-rolled coils sizes 12 mm × 1510 from steel X65 grade further production electric welded pipes according to API-5L standard. provides carrying out roughing-rolling two stages facilitating forming a smaller austenite grain and therefore more dispersed homog...

Cold rolling of steel is one of the most important metal forming processes so an accurate control of its parameters during the process is necessary. In this paper, the friction coefficient has been proposed as a function of cold rolling parameters such as forward slip, forward and backward tensile stresses ,strip thickness, static deformation, resistance of strip before and after rolling ,strip...

Abstract The looper control of hot strip finishing mill is one the most critical items in rolling process. It a highly complex nonlinear system, with strong states coupling and uncertainty that present difficult challenge. Loopers are placed between stands not only to mass flow two but also generate constant specific tension during rolling, independent actual stock which influences width strip....

A capital issue in roll-gap control for rolling mill plants is the difficulty to measure the output thickness without including time delays in the control loop. Time delays are a consequence of the possible locations for the output thickness sensor which is usually located some distance away from the roll gap. In this work, a new model-based predictive control law is proposed. The new scheme is...

In multi-stand cold rolling mills an accurate synchronization of the mill drives is necessary for a good product quality and for a safe process operation. During the standard commissioning procedure the control performance of each drive is optimized individually. However, in normal operation mode the performance is then not always optimal due to the coupling of the drives by the strip being rol...