Method for determining the time of hot rolling heating stove bar plate leavings in furnace

Abstract

The invention discloses a method for determining the remaining time of a slab in a hot-rolling heating furnace, the method firstly according to the length of the slab in the heating furnace, the width of the finished product and the thickness of the finished product, and the length of the slab, the width of the finished product, the thickness and the hardness level , using the slab extraction interval combination forecast model to calculate the extraction interval of the slab in the heating furnace, and integrate it with the current timing extraction interval; then according to the length of each section of the heating furnace and the current position of the slab, according to The length is indexed from the extraction section, and the slab extraction interval within the index range is accumulated and calculated to determine the remaining time of the slab in the furnace or in the section. And automatically adapt to the correction. It is better to accurately predict the temperature of the slab, and accurately control and set the furnace gas temperature of the heating furnace so that the slab reaches the specified process target temperature, which is conducive to improving the temperature control level of the slab in the heating furnace and improving the temperature of the slab. The heating quality of billet and reduce energy consumption.

Description

technical field [0001] The invention relates to forming processing of hot-rolled steel, and more specifically refers to a method for determining the remaining time of a hot-rolled heating furnace slab in the furnace. Background technique [0002] There are two main goals of hot rolling heating furnace production. One is to provide slabs that meet the quality requirements of the heating furnace for subsequent processes; the other goal is to coordinate with the rolling line and meet the rolling rhythm requirements of the rolling line. The latter goal is to determine the optimal slab extraction rhythm of the heating furnace, and the former goal is to control the heating temperature of the slab. These two goals are interrelated. A key variable in the control of the slab heating temperature is the remaining time of the slab in the furnace. The automatic combustion control model uses the remaining time of the slab to calculate and determine the furnace temperature. The gas temper...

AI Technical Summary

Problems solved by technology

Since the remaining furnace time of the slab in the heating furnace is calculated according to the current steel-drawing rhythm and the rolling sequence, when the steel-drawing rhythm changes, the remaining furnace time will inevitably change, so that the actual furnace time of the slab The time is inaccurate, which also makes the setting of the furnace gas temperature inaccurate

[0006] Therefore, there are problems in the methods currently used. They cannot accurately calculate the remaining time of the slab in the heating furnace, so they cannot be well adapted to hot rolling production. It is necessary to find a new method for determining the remaining time of the slab in the heating furnace. Solve the above problems and meet the needs of hot rolling production

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