Method for reducing axial drifting of rolling mill rolls

Abstract

The invention discloses a method for reducing axial drifting of rolling mill rolls, and belongs to the technical field of hot rolling. The method for reducing axial drifting of the rolling mill rolls comprises the following steps that the rotating direction of the first working roll and the rotating direction of the second working roll are determined, and the axial force direction of the first working roll and the axial force direction of the second working roll and whether the first working roll and the second working roll are active or passive during rotation of the first working roll and the second working roll are determined; whether the first working roll and the second working roll are in a right cross state or a left cross state is determined according to the right-hand rule or the left-hand rule; a worn lining plate of the first supporting roll and a worn lining plate of the second supporting roll are replaced or padded so as to restore the original design size; the worn lining plates are padded to push the first working roll to be parallel to the first supporting roll and push the second working roll to be parallel to the second supporting roll. According to the method for reducing axial drifting of the rolling mill rolls, harmful crossing and drifting of a four-high rolling mill roll system can be quickly and accurately inhibited.

Description

technical field [0001] The invention relates to the technical field of hot rolling, in particular to a method for reducing axial movement of rolling mill rolls Background technique [0002] The axial movement of the rolls in the flat roll mill is mainly due to the crossing between the rolls caused by the wear of the mill archway and the bearing seat liner, and the axial force formed between the rolls during rolling, which leads to the axial movement of the roll system, which affects the rolling stability and equipment life. will have a huge impact. The current common practice is to compensate for the cross state between the rollers by replacing the new liner or adding gaskets under the old liner. However, since a set of four-high rolling mill has 32 liners, there are as many as 14 types of intersecting states of the roll system after the liners are worn out. The on-site personnel often cannot accurately determine the wear position and the intersecting state, and can only re...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for reducing axial movement of rolls in a rolling mill, which solves or partially solves the problems in the prior a

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