Control method for channeling of hot continuous rolling CVC working roll

A control method and technology of work rolls, which are applied in the field of strip rolling, can solve the problems of affecting the stability of specification jumps, excessive roll shifting strokes, and insufficient roll shifting strokes, so as to prevent excessive shifting and roll with the same width. The effect of increasing the number of rolling kilometers and increasing the number of rolling kilometers

Pending Publication Date: 2022-07-22
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adopting the technical solution of the present invention effectively solves the problem that the roll shifting stroke is insufficient during rolling with the same width, and the roll shifting stroke is too large during non-same width rolling,

Method used

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  • Control method for channeling of hot continuous rolling CVC working roll
  • Control method for channeling of hot continuous rolling CVC working roll
  • Control method for channeling of hot continuous rolling CVC working roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for controlling the shifting of CVC work rolls in hot tandem rolling in this embodiment includes the following steps:

[0038] Step 1: Configure the bending force variation amplitude for each stand of the finishing rolling

[0039] Step 2, configure the preset offset strip number for each stand of finishing rolling

[0040] Step 3, according to the change amplitude of the bending force Number of preset offset strips Change period strip number N cyc , get the bending force change value FB of each framechg ;

[0041] Step 4: Build a model related to the change of roll shifting and the change value of the bending force, and obtain the equivalent roll shifting amount ΔS and the set roll shifting amount S after the roll bending change. norm ;

[0042] Step 5: Determine whether the roller shifting conditions are met. If the conditions are met, the roller shifting is performed according to the model constructed in step 4.

[0043] Among them, the judgment ...

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PUM

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Abstract

The invention discloses a control method for channeling of a hot continuous rolling CVC working roll, and belongs to the technical field of plate and strip rolling. According to the control method, the roll bending set value is periodically adjusted in the strip steel rolled in the same width in one rolling period, meanwhile, a roll shifting coordination change model is given, the working roll shifting stroke is expanded, the effect of even abrasion of the roll is achieved, and the rolling kilometers are increased; for strip steel rolled in different widths, the roll bending force of each rack is fixed, and roll shifting executes a normal stroke so as to keep the rolling stability under width jump. By the adoption of the control method, the roll shifting stroke of the working roll is increased by 30-60 mm in the same-width rolling process, and the same-width rolling kilometers are remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of strip rolling, and particularly relates to a method for controlling the shifting of work rolls in hot continuous rolling. Background technique [0002] CVC rolling mill has the characteristics of strong crown adjustment ability and rapid adjustment, but it also has the problems of serious edge wear and short rolling kilometers when rolling with the same width, which restricts the batch rolling of thin-gauge products and is not conducive to improving production efficiency . Work roll shifting means that the work rolls move laterally. The purpose of the shifting is to make the work rolls wear evenly. The variable crown work rolls can also adjust the crown of the roll gap through the shifting, so as to control the shape of the strip. Each time a strip of steel is rolled, the work rolls move laterally for a certain distance, and this distance is called the roll-shifting step. The distance from the rolling c...

Claims

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Application Information

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IPC IPC(8): B21B37/42
CPCB21B37/42B21B2269/14
Inventor 闻成才杨滋冯涛
Owner MAANSHAN IRON & STEEL CO LTD
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