Roll gap calibration method for lightly pressing down tension leveler in square billet continuous casting

Abstract

Disclosed is a roll gap calibration method for lightly pressing down a tension leveler in square billet continuous casting. The roll gap calibration method for lightly pressing down the tension leveler in the square billet continuous casting includes: a, selecting a standard chain pole as a calibrator, and setting a calibration reference value which comprises calibration pressure values and a calibration thickness value; b, starting the calibrator to complete a calibration motion, and reading and recording an actual detection value; c, calculating a deviation value according to the calibration reference value and the actual detection value, and performing correction and compensation according to the deviation value, wherein the calibration pressure values in the step a are respectively a minimum pressure value and a maximum pressure value, a pressure interval value is constituted by the minimum pressure value and the maximum pressure value, and the correction and the compensation in the step c are performed according to a two point linearity correction algorithm, and confirmed according to a linear function relationship between pressure and the thickness. The roll gap calibration method for lightly pressing down the tension leveler in the square billet continuous casting is achieved by using the multiple segment calibrator to achieve positioning once and automatically calibrating the pressure of multiple points, improves roll gap calibration accuracy when the tension leveler is pressed down in the square billet continuous casting, shortens calibration time, and improves calibration efficiency.

Description

technical field [0001] The invention belongs to the technical field of continuous casting control and detection in iron and steel production, and in particular relates to a roll gap calibration method of a stretching and leveling machine under continuous casting of billets under light pressure. Background technique [0002] In the field of steel production, billet continuous casting machines are mainly used to produce high-quality, high-grade, high value-added wire rods, high-alloy steel pipes, bearing steel, bars and other raw materials. In order to control the internal quality defects of the slab such as center segregation and center porosity, which are prone to occur in the production of billet continuous casting, the use of soft reduction technology is the most effective process control method. The soft reduction technology refers to compensating the solidification shrinkage of the slab by applying a uniform external force at the end area of ​​the liquid core of the cont...

AI Technical Summary

Problems solved by technology

[0015] 2) The calibration error is large and the accuracy is low

However, this technical solution lacks a corresponding description on how to shorten the calibration time and improve the calibration accuracy

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