METHOD FOR INCREASING THE STABILITY OF, IN PARTICULAR, absolute precision in thickness and reliability of aggregates in the hot rolling of steel or nonferrous METALS

摘要

1.method u043fu043eu0432u044bu0448u0435u043du0438u00a0 stability process, in particular the absolute accuracy in thickness, and the reliability of the u0433u043eu0440u00a0u0447u0435u0439 rolling steel or materials of the colored m u0435u0442u0430u043bu043bu0430 in small u0441u0442u0435u043fu0435u043du00a0u0445 deformation () or small u043eu0431u0436u0430u0442u0438u00a0u0445, which take into account the yield stress (re) at elevated temperatures when calculating u043du043eu043cu0438u043du0430u043bu044c the main rolling u0443u0441u0438u043bu0438u00a0 (fw) and the position of the adjustment (s),u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 that yield stress (re) at elevated temperature are depending on the temperature (t) deformation and / or speed (phip) deformation and u0432u0441u0442u0440 u0430u0438u0432u0430u044eu0442 in function yield stress (kf, r) u0434u043bu00a0 u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 nominal rolling u0443u0441u0438u043bu0438u00a0 (Fw) through ratio;re = a + eb1 + b2u0442phipc, (2);the multiplicative expression curves u0434u043bu00a0 yield stress (re) at elevated temperatures depending on the temperature (t) and the velocity (phip) u0434u0435u0444u043eu0440u043c deformation stock choosing according to the formula;kf; r = (a + eb1b2u0442phipc + kf0A1 em1u0442 a2 and a3 phipm3, (3);where re yield at elevated temperature;;t is the temperature deformation;;Phip - the speed of deformation;;(a; b; c - coefficients.;2. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that the yield (kf, r) u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 through conventional u0443u0440u0430u0432u043du0435u043du0438u00a0 rolling u0443u0441u0438u043bu0438u00a0 u0434u043bu00a0 u0432u044bu0447u0438u0441u043bu0435u043du0438u00a0 nominal rolling u0443u0441u0438u043b u0438u00a0 (fw), with the adjustment of the thickness as well as u0434u043bu00a0 calculation models and methods of adjustment according to the following equation;fw = QPkf, rb (rw (i - h)) 1 / 2, (4);where fw - rated rolling force;;Qp - u0444u0443u043du043au0446u0438u00a0 u0434u043bu00a0 recording geometry on deformation and strength of u0442u0440u0435u043du0438u00a0;;kf; r - yield, u0443u0447u0438u0442u044bu0432u0430u00a0 yield during plastic deformation at elevated temperature;;b is the width of the u043fu0440u043eu043au0430u0442u044bu0432u0430u0435u043cu043eu0433u043e material;;rw is the radius of the roll.;ho - thickness to pass through the rolls.;h - thickness after passes through the rolls.;3. method for p. 1 or 2, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, based on nominal rolling u0443u0441u0438u043bu0438u00a0 (fw) counting module material (cm), u0443u0447u0438u0442u044bu0432u0430u00a0 yield stress (re) with high u0442u0435u043cu043fu0435u0440u0430u0442u0443 d according to the temperature (t) and the velocity (phip deformation) deformation u0434u043bu00a0 smaller degrees of deformation than u0441u043fu0435u0446u0438u0444u0438u0447u043du0430u00a0 u0434u043bu00a0 material u0433u0440u0430u043du0438u0447u043du0430u00a0 degree u0434u0435u0444u043eu0440u043cu0430u0446 s (g), according to the formula;cm = (fw - fm) / dh1, (5);where to see the material.;fw - rated rolling force;;fm - measured rolling force;;dh1 - changing output thickness.;4. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 3, so that u043fu0440u0438u043cu0435u043du00a0u044eu0442 normal u043au0430u043bu0438u0431u0440u043eu0432u043eu0447u043du043eu0435 equation formula;dsAGC = (1 + cm / cg) dh1 = (1 + cm / cg) (fw - fm) / cg + s - ssoll), (6);where dsAGC change installation of hearth deformation;;see the module material.;cg module u043fu0440u043eu043au0430u0442u043du043eu0439 cage;;dh1 - changing output thickness;;fw - rated rolling force;;fm - measured rolling force;;s - installation of the deformation;;ssoll - u043du043eu043cu0438u043du0430u043bu044cu043du0430u00a0 installation of the deformation.