Roller gap self-learning deviation correcting method and device

Abstract

The invention discloses a roller gap self-learning deviation correcting method and device, and relates to the technical field of steel rolling. The method is applied to a multi-rack continuous rollingprocess, and comprises the following steps that when a current roll of strip steel passes through a last rack of a multi-rack continuous rolling machine, current rolling data of each rack in the multi-rack continuous rolling machine are acquired; on the basis of the current rolling data and a mark position of recalculated rolling force of each rack, actual rolling force of each rack is determined; a current value of a self-learning coefficient of each rack is obtained; whether the current values of the self-learning coefficients are within a preset range or not is judged, if the current values of the self-learning coefficients are within the preset range, an updated self-learning coefficient value is obtained based on the current values of the self-learning coefficients and old values ofthe self-learning coefficients; and according to the updated self-learning coefficient value, the multi-rack continuous rolling machine is controlled to carry out rolling on a next roll of strip steel. According to the roller gap self-learning deviation correcting method, the problem that roller gap setting at an abnormal situation is not accurate can be solved, and the roller gap setting precision is improved, so that the strip steel rolling quality is improved.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method and device for self-learning deviation correction of roll gaps. Background technique [0002] In the hot rolling production process, the accuracy of the roll gap setting directly affects the thickness of the finished strip, and the control accuracy of the strip thickness reflects the level of product quality control. [0003] At present, the roll gap self-study of the hot rolling production line mainly adopts the method of comparing the second flow thickness with the thickness of the thickness gauge. The second flow thickness of each stand is calculated according to the principle of equal second flow according to the actual measured thickness at the outlet; the thickness of each stand thickness gauge is calculated through the roll gap equation based on the measured rolling force and other data. During the production process, it was found that when the measured rol...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a method and device for roll gap self-learning and deviation correction, which solves the technical problem in the related art that the accuracy of roll gap setting cannot be effectively improved when the measured rolling force fluctuates.

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