METHOD FOR CONTROLLING COILING TEMPERATURE OF HOT ROLLED PLATE

摘要

PURPOSE: To enhance control accuracy when a hot rolled plate is a high Si steel in the control of the coiling temperature of the hot rolled plate. ;CONSTITUTION: The coiling temperature of a hot rolled plate is predictively calculated, and a water injection quantity from a header is decided so that a calculated value becomes a target value. In the predictive calculation of the coiling temperature, when the hot rolled plate is a high Si steel, the heat transfer coefficient of a water-cooling surface, which is larger than that in the case of a low Si steel, is used. The coiling temperature is correctly predicated, and a control with high accuracy of the coiling temperature is enabled.;COPYRIGHT: (C)1997,JPO