METHOD OF INCREASING PROCESS STABILITY, IN PARTICULAR ABSOLUTE ACCURACY OF THICKNESS, AND RELIABILITY OF STEEL OR NONFERROUS METAL HOT ROLLING UNITS

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to rolling process. In rolling at minor strain (φ) or minor squeezing, yield point (R_e) is allowed for at increased temperature in calculating rated rolling force (F_w) and corresponding adjustment position (s). It is possible to increase accuracy with respect to yield point (k_f,R) and rated rolling force (F_w) at minor strain (φ) or at minor reduction by calculating yield point (R_e) at increased temperature depending upon deformation temperature (T) and/or deformation rate (phip) to be introduced in the function of yield point (k_f,R) to determine rated rolling force (F_w) via relationship R_e=a+e^b1+b2·T·phip^c (2), where R_e is yield point at increased temperature, T is deformation temperature, a, b, c are deformation rate, and a; b; c are coefficients.;EFFECT: higher stability, absolute accuracy with respect to thickness and reliability in hot rolling of steel or nonferrous metals.;4 cl, 2 dwg