Adjustment method of height of rolling line

Abstract

The invention provides a method for adjusting the height of a rolling line in the roll changing process on a rolling production line. The method comprises the following steps: (1) after roll changing, the parameters of a working roll after being replaced and a support roll are input to a control device; (2) the control device compares the parameters of the working roll after being replaced and the support roll with the maximum parameters of the working roll and the support roll provided in the control device, the adjustment quantity delta h of an adjusting device is determined, and the grade n of a trapezoidal backing plate is calculated; (3) the control device sends an instruction to the adjusting device based on the calculated grade n; (4) after receiving the instruction, the adjusting device automatically adjusts the trapezoidal backing plate to a corresponding grade n so as to adjust the height of the rolling line, thus causing the strip steel to horizontally pass through a roll gap as far as possible, which is beneficial to improving the rolling stability.

Description

technical field [0001] The invention relates to the field of steel rolling technology, in particular to a method for adjusting the height of a rolling line during the roll changing process of a rolling production line. Background technique [0002] In hot rolling production, the control of the height of the roll surface of the work roll under the finishing stand is a very important link, which determines the running position of the strip in the direction of the height of the rolling line. The rolling line refers to a line connected by the roll surfaces of the lower work rolls, and the height of the roll line is the height of the roll surfaces of the lower work rolls. For production control, the smaller the height difference between the front and rear of the work rolls of each stand, the better. As shown in Figures 1a-1c, different shapes of the strip head after passing through the rolling mill are shown respectively. Referring to Fig. 1c, if the drop is small, the strip st...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a method for adjusting the height of the rolling line, which can control the distance between the lower work roll surface and the rolling line within a small range, and solve the problem of the height difference between the work roll surface of the front and rear racks. large problems, so that the strip head is threaded as smoothly as possible in horizontal form to improve rolling stability

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