Method for judging generation of edge waves of over-temper mill roller

Abstract

The invention relates to a method for judging the generation of edge waves of an over-temper mill roller, i.e., a method for judging the generation of edge waves of an over-temper mill roller. The method comprises the following implementing steps of: firstly, data acquiring and preprocessing: acquiring rolling forces FWS* and FdS* of a driving side and an operating side of the roller and oil height position YWS* and YDS* of the driving side and the operating side of the roller in real time; and moving average filtering processing: secondly, roller inclination fault early warning: extracting the following production rule based on fault analysis, judging the generation of a roller inclination fault, warning if two absolute value sequences are simultaneously met, otherwise, judging to be normal, i.e., warning if so, and conversely, judging to be normal; and thirdly, fault processing: if roller inclination is judged to happen in the second step, judging that the over-temper mill roller has edge waves and promoting operators and producers of overhauling equipment or replacing the roller in time. The generation of the edge waves of strip steel is forecast through precisely calculating the inclination position of the temper mill roller in real time and warning according to the inclination position.

Description

technical field [0001] The invention relates to a method for controlling the quality of steel rolling, in particular to a method for controlling the side wave generation of rolls in a skin pass mill. Background technique [0002] In the cold-rolled sheet production process, strip edge corrugation is a frequently occurring quality problem. The essence is that the instantaneous force on some areas of the edge of the strip exceeds the yield strength of the strip material, resulting in local plastic deformation. After the external force disappears, the deformation cannot be recovered, and the appearance becomes edge waves. This strip steel quality problem occurs frequently, and its causes are relatively complicated. It is related to the material and thickness of the strip, as well as the temperature and tension of the furnace zone. If side waves are to be fundamentally eliminated, the various intricate factors mentioned above must be controlled within a reasonable range. Obvi...

AI Technical Summary

Problems solved by technology

If the centerlines of the upper and lower temper rolls are not kept parallel, that is, there is a certain inclination between the center line of the upper temper roll and the center line of the lower temper roll, then the leveling quality will be greatly reduced

When the inclination is serious, not only the original side wave problem cannot be improved or eliminated, but even new side waves will be generated

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