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On-line quick adjustment method of bowed roller of double cold reduction mill based on mechanism model

A technology of secondary cold rolling and mechanism model, applied in the direction of tension/pressure control, profile control, etc., can solve the problems of large fluctuation and unstable plate quality.

Inactive Publication Date: 2009-08-19
JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, in the secondary cold rolling production process, after the pre-setting of the bending force of the work roll and the intermediate roll, if it needs to be adjusted due to factors such as fluctuations in incoming materials, it almost entirely depends on the experience of the operator, without a certain amount. The theoretical basis and mathematical model are used as support, so the shape quality of the product is unstable and the fluctuation is relatively large

Method used

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  • On-line quick adjustment method of bowed roller of double cold reduction mill based on mechanism model
  • On-line quick adjustment method of bowed roller of double cold reduction mill based on mechanism model
  • On-line quick adjustment method of bowed roller of double cold reduction mill based on mechanism model

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Embodiment 1

[0039] Fig. 6 is a detailed flow chart of the on-line quick adjustment method of bending rolls based on the mechanism model of the secondary cold rolling mill according to the present invention. Now the material grade is SPCC and the specification is 0.17mm×1200mm strip steel as an example, with the help of Figure 6, the mechanism model-based on-line rapid adjustment of the bending rolls of the strip steel of the specific steel grade and specification on the specific secondary cold rolling mill is described. process.

[0040] First, in step 1, the equipment parameters of the secondary cold rolling mill are collected, mainly including: 1# and 2# stand work roll diameter D w1 =430mm, D w2 =430mm; 1# and 2# frame intermediate roller diameter D m1 =460mm, D m2 =460mm; 1# and 2# frame support roller diameter D b1 =1200mm, D b2 =1200mm; 1# frame work roll, intermediate roll and backup roll roll shape distribution ΔD 1wi =0, ΔD 1mi =0, ΔD 1bi =0; 2# frame work roll, intermedi...

Embodiment 2

[0072] In order to further illustrate the basic idea of ​​the present invention, the strip steel with the material grade of SPCD and the specification of 0.20mm×1650mm is taken as an example, and the strip steel of a specific steel type and specification is described with the help of FIG. 6 on a specific secondary cold rolling mill. The mechanism model-based rapid online adjustment process of bending rolls.

[0073] First, in step 1, the equipment parameters of the secondary cold rolling mill are collected, mainly including: 1# and 2# stand work roll diameter D w1 =520mm, D w2 =520mm; 1# and 2# frame intermediate roll diameter D m1 =400mm, D m2 =400mm; 1# and 2# frame support roller diameter D b1 =1100mm, D b2 =1100mm; 1# frame work roll, intermediate roll and backup roll roll shape distribution ΔD 1wi =0, ΔD 1mi =0, ΔD 1bi =0; 2# frame work roll, intermediate roll and backup roll roll shape distribution ΔD 2wi =0, ΔD 2mi =0, ΔD 2bi =0; 1# and 2# frame work roll body...

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Abstract

The invention discloses a method for on-line quick adjustment for a bended roller of a double cold reduction mill on the basis of a mechanism model, which is characterized by comprising the following steps: a, collecting the equipment parameters of the double cold reduction mill; b, collecting the key rolling technological parameters of a belt material to be rolled; c, determining the transmission coefficient of rolling pressure by the roll-bending force of a No.1 and a No.2 standers; d, determining the tension transmission coefficient by the roll-bending force of the No.1 and the No.2 standers; e, calculating the corresponding on-line adjustment quantity of the roll-bending force according to the actual rolling pressure and the tension fluctuation quantity; and f, finishing the calculating, and achieving on-line adjustment to the bended roller. The method is based on the mechanism model and takes the minimum product profile shape fluctuation as a target to calculate out the transmission parameters of the roll-bending force to the rolling pressure and the transmission parameters of the roll-bending force to the tension respectively, performs local linear processing on a non-linear problem, forms the complete technique for the on-line quick adjustment for the bended roller of the double cold reduction mill on the basis of the mechanism model by giving corresponding roll-bending force adjustment quantity, ensures the stability of the product profile shape, and can create huge economic benefit.

Description

technical field [0001] The invention relates to a secondary cold rolling production technology, in particular to a mechanism model-based on-line rapid adjustment technology for a secondary cold rolling mill in which both stands are configured with UCM models. Background technique [0002] attached figure 1 It is a schematic diagram of the production process and equipment layout of the double UCM type secondary cold rolling mill. as attached figure 1 As shown, the strip 1 is coiled from the uncoiler 2 and then sent to the stand. After rolling in two stands, the strip 1 reaches a specified thickness and is sent to the coiler 3 for rewinding. The rolls of each stand include work rolls 4 and intermediate rolls 5 and backup rolls 6, which are in direct contact with the strip surface. as attached figure 2 As shown in the figure, in order to control the flatness, in the rolling process, the 1# and 2# stands have flatness control means for work roll bending, intermediate roll b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28B21B37/48
Inventor 白振华李亮亮马辉宁远鹏
Owner JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD