A method for increasing the process stability, in particular of the absolute thickness and the installation safety, during the hot-rolling steel - or ne - materials

摘要

A method for increasing the process stability, in particular of the absolute thickness and the installation safety, during the hot-rolling steel - or ne - materials, with small degrees of deformation (φ) or small thickness reductions taking into account the yield point at elevated (r_e) in the calculation of the desired rolling force (f_w) and the respective adjustment position (s), with respect to the accuracy of the yield stress (k_{f, r}) and the desired rolling force (f_w) in the case of small degrees of deformation (φ) or small thickness reductions be increased in that the yield point at elevated (r_e) as a function of forming temperature (t) and / or deformation speed (phip) is determined, and, in the function of the yield stress (k_f) for the determination of the desired rolling force (f_w) via the relationship(2) R_e = a + e^{b1 + b2 · t} · phip^c.is integrated, wherein s =:R_e = Yield point at elevatedT = forming - temperaturephip = forming - speeda; b; c = coefficients.