Material prediction method

Abstract

To provide a material quality prediction method capable of easily predicting mechanical characteristics of a steel plate manufactured through a hot rolling process.SOLUTION: The material quality prediction method for predicting mechanical characteristics of a steel plate manufactured through a hot rolling process acquires, as temperature history, a plate temperature over the full length and the full width of a coil during a temperature acquisition period from prescribed time at the completion time of coil winding and after to the lapse of prescribed time for a plurality of steel plates for each steel type, acquires a correlation expression between mechanical characteristics and a parameter on the basis of the mechanical characteristics measured at a plurality of positions of the manufactured coil and the parameter based on the plate temperature at a position acquired from the acquired temperature history, acquires a plate temperature over the full length and the full width of the coil during the temperature acquisition period from prescribed time for a steel plate to be rolled, calculates a parameter at an optional position of the coil, and acquires mechanical characteristics from a correlation expression of a corresponding steel type.SELECTED DRAWING: Figure 1

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