A Calibration Method of Entrance Guide Wheel in Finish Rolling

Abstract

The invention relates to a calibration method for finish rolling inlet guide wheels. The method comprises the following steps of 1) selecting the outer sides of inlet guide rulers as measurement positions; 2) at the rolling mill inlet positions of the working side and the transmitting side of one rolling mill, measuring the shortest distance L1 from the inner side, close to the corresponding guide ruler transmission device, of one rolling mill housing to the outer side of the corresponding inlet guide ruler; and 3) the calibration distance of each guide wheel is calculated through adopting aformula that L4 equals L minus L1 minus L2 and minus L3. According to the calibration method, the calibration precision of the finish rolling mill inlet guide wheels is improved, the rolling stabilityof finish rolling is guaranteed, and the calibration precision is improved from the original + / -5 mm to the current + / -3 mm and is improved by 40%; the safety coefficient of the station of the calibration personnel is greatly improved; the working load of operators is reduced; and the calibration time is shortened by 30%.

Description

technical field [0001] The invention relates to the field of steel rolling technology, and relates to a method for calibrating an entrance guide wheel of finish rolling. Background technique [0002] The guide wheel at the entrance of the finishing mill of the hot rolling production line has poor alignment, long calibration time, and low precision, which may easily lead to poor rolling stability of the finishing rolling, unstable strip threading, and frequent steel jamming accidents. At present, the guide wheel calibration of the finishing mill of Anshan Iron and Steel 1580 production line is to measure the distance between the archways at the entrance of the rolling mill to find the center point to determine the position of the rolling center line, and then measure the distance between the guide wheels on both sides at the position of the center point, and finally calibrate the guide wheel wheel position. The disadvantages of this calibration method are: first, due to the ...

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Problems solved by technology

The disadvantages of this calibration method are: first, due to the poor working condition of the archway in the rolling mill, there is a certain deviation in the position of the centerline after measurement; second, because the transmission position of the guide wheel is far from the measurement position, the measurement position of the guide wheel There are different degrees of wear in the slideway, and the calibration position is the transmission position of the guide wheel, so the deviation is relatively large; the third is that this measurement method can only be measured and calibrated during finishing roll change or maintenance, and it takes a long time

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