Hot-rolling analogue device and rolling history recording analogue method

Abstract

A hot-rolling analogue device calculates the temperature history record and machining history record of the hot-rolling plate from drawing-out from a heating furnace to coiling by an underground coiling machine with a high precision. The hot-rolling analogue device of the invention is a hot-rolling production line (150) which rolls the rolled plate (f) which is drawn out from a rolled material feeding mechanism (151) with a high temperature and then cools and coils to coiled material. The hot-rolling analogue device comprises the following components: a temperature prediction module which comprises the speed of the rolled plate and the water amount for cooling at least and predicates the temperature of the coiled plate (f); and a temperature history record calculation part (103) which continuously calculates the temperature history record of the rolled plate (f) from drawing-out from a rolled material feeding mechanism (151) to coiling to the coiled material and correspondingly outputs the temperature history record and the elapsed time after drawing-out from the rolled material feeding mechanism (151).

Description

technical field [0001] The present invention relates to a hot-rolling simulator for simulating the temperature history or processing history of a hot-rolled steel sheet between the extraction of the hot-rolled steel sheet before rolling and the winding of the hot-rolled steel sheet in the down coiler after rolling through the rolling process. And rolling history simulation method. Background technique [0002] Conventionally, as a method of simulating the temperature or deformation characteristics of a hot-rolled steel sheet, for example, Patent Document 1 discloses incremental analysis of the deformation characteristics of a hot-rolled steel sheet based on rolling processing to obtain the deformation (sheet thickness) of the hot-rolled steel sheet. Deformation amount), deformation rate (thickness deformation rate), temperature, and then use it to calculate the recrystallization rate and recrystallization grain size of the hot-rolled steel sheet. [0003] In addition, in Pa...

AI Technical Summary

Problems solved by technology

[0007] First, the two methods of Patent Documents 1 and 2 are both methods of accurately obtaining temperature or processing history (deformation, deformation speed) through simulation based on a physical model, and therefore may take a lot of time for calculation

[0008] Second, regarding the use of the temperature, load, and actual value of the steel plate speed taken in from the sensor at each point of the hot rolling production line, there is no way to improve the consistency between the calculated value and the actual value of the steel plate.

Therefore, in order to improve the accuracy of calculation results, it is necessary to increase the degree of fineness of the model or three-dimensional lattice used in the calculation, which further complicates the calculation.

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