Automatic controlling method of quality of material to be rolled in hot rolling
专利汇可以提供Automatic controlling method of quality of material to be rolled in hot rolling专利检索，专利查询，专利分析的服务。并且PURPOSE:To stably manufacture a steel sheet having a target material quality, by estimating the final material quality of the steel sheet while rolling, and controlling a rolling condition basing on the estimated results, in hot rolling the steel sheet. CONSTITUTION:In hot rolling a steel sheet at a finishing rolling-temperature lower than its Ar3 transformation point, an average deformation resistance is obtained from a rolling load, the number of revolutions of a rolling roll, the sheet thickness, and a time required between passes, and then, an average temperature of the sheet is estimated by calculation to calculate an accumulated strain. A calculated deformation resistance at the (n)th pass on the way of rolling is calculated from the equation ( I ) by putting it as a function of an average temperature of the sheet and a logarithm of strain speed, and further, parameters of the quality of a material to be rolled, that the material should possess, are calculated by the equation (II), and the parameters of the material quality at the time of finishing the rolling are estimated by the equation (III) basing on a rolling schedule on and after the next pass. In order to decrease the difference between the quality of the material and a target value into the minimum by the estimated results; a correcting control for the number of revolutions of the roll and the time required between the passes till the finish of rolling, or a predict controlling for the next material to be rolled, is performed.，下面是Automatic controlling method of quality of material to be rolled in hot rolling专利的具体信息内容。
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