METHOD FOR ROLLING AND HEAT TREATMENT OF URANIUM INGOTS Russian patent published in 2003 - IPC

FIELD: rolled stock production, namely rolling merchant bars of uranium. SUBSTANCE: method comprises steps of selecting rolling temperature; heating ingots until selected temperature; rolling them; quenching rolled pieces in water; calculating control factors for each selected temperature depending upon characteristics of ingots, equipment state at time of heating and taking into account non-uniformness of ingot heating along length by means of resolver at using equation of mathematical model such as T = α₀+α₁l+α₂l²+α₃l³+α₄l⁴, where T - rolling temperature, C; l - coordinate of ingot portion for which temperature is determined; α₀ - free term of polynom; α₁...α₄ - coefficients of polynom being functions of heating factors and of factors characterizing ingot and state of equipment for heating. Values of said coefficients α₀...α₄ are determined according to relations , where x₁...x₃ - controlled factors of heating; x₁ -energy quantity for main heating, kWt/h; x₂ - time period of soaking, s; x₃ - time period for preheating, s; x₄...x₈ - factors characterizing ingot and heating equipment; x₁₁ - length of feeder head portion of ingot relative to its maximum length; x₅ -ingot mass,kg; x₆ - number of ingot after idle period of heating equipment; x₇ - time period of intrashift or intershift idling of heating equipment, h; x₈ - quantity of ingots rolled after last trimming of heating equipment, pieces. EFFECT: enhanced consumer's properties of rolled uranium pieces. 2 cl, 4 dwg, 3 tbl