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TEMPERATURE UNEVENNESS PREDICTION METHOD OF HOT ROLLED STEEL SHEET, FLATNESS CONTROL METHOD, TEMPERATURE UNEVENNESS CONTROL METHOD AND MANUFACTURING METHOD
TEMPERATURE UNEVENNESS PREDICTION METHOD OF HOT ROLLED STEEL SHEET, FLATNESS CONTROL METHOD, TEMPERATURE UNEVENNESS CONTROL METHOD AND MANUFACTURING METHOD
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机译：热轧钢板的温度不均匀度预测方法，平整度控制方法，温度不均匀度控制方法及制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a temperature unevenness prediction method of a hot rolled steel sheet, capable of highly accurately predicting even temperature unevenness in the longitudinal direction.;SOLUTION: The temperature unevenness prediction method of the hot rolled steel sheet comprises: a step of predicting a temperature change in a steel sheet area by determining a heat transfer coefficient of a steel sheet surface cooled by using a coolant, while taking into consideration an angle between the steel sheet surface expressed by aggregation of a spatial coordinate point and the coolant colliding with the steel sheet surface, by expressing a three-dimensional shape of the steel sheet area, predicted to have temperature unevenness, having predetermined lengths in the width direction and the longitudinal direction by the aggregation of the spatial coordinate point, when predicting the temperature unevenness of the hot rolled steel sheet before being wound; a step of predicting a transformation rate of the steel sheet area; a step of predicting the transformation expansion and the thermal contraction of the steel sheet area; and a step of predicting stress and strain of the steel sheet area, and predicts the temperature unevenness of the steel sheet area before being wound, by continuously solving equations used when respectively predicting the temperature change, the transformation rate, the transformation expansion and the thermal contraction, the stress and the strain.;COPYRIGHT: (C)2014,JPO&INPIT
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