Complete roll forming configuring method for wide flat steel hot rolling finish mill set

A technology of finishing rolling unit and configuration method, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of unreasonable roll shape configuration of work roll and backup roll, etc.

Active Publication Date: 2010-11-24
SHOUGANG CORPORATION
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Problems solved by technology

[0004] The purpose of the present invention is to provide a technology for configuration of roll profiles in hot continuous rolling and finishing mills for wide-band steel, which solves the problem of un

Method used

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  • Complete roll forming configuring method for wide flat steel hot rolling finish mill set
  • Complete roll forming configuring method for wide flat steel hot rolling finish mill set
  • Complete roll forming configuring method for wide flat steel hot rolling finish mill set

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Embodiment Construction

[0056] Shougang Qiangang’s 1580mm hot-rolled wide-band steel production line was put into operation in November 2009. At the initial stage of production, the finishing rolling unit was a 7-stand four-high rolling mill. The work rolls and backup rolls had no roll shape, and all stand rolls used Flat roll shape, the main problems that lead to the control of plate shape are:

[0057] 1) The shape control accuracy is low;

[0058] 2) Thin gauge rolling stability is poor.

[0059] In order to improve the control accuracy of crown and flatness of hot-rolled strip steel and the stability and shape quality of thin-gauge strip steel rolling, it is necessary to design the work roll and backup roll shape of the finishing rolling unit. According to the characteristics of controlling the convexity of the upstream stand and the flatness of the downstream stand of the hot continuous rolling strip finishing mill, a new roll configuration method for the finishing mill is finally determined. ...

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Abstract

The invention relates to a complete roll forming configuring method for a wide flat steel hot rolling finish mill set. According to the characteristics that an upstream machine frame controls the convexity and a downstream machine frame controls the flatness in the seven-machine frame and four-roll hot rolling wide flat steel finish mill, a finish rolling inlet machine frame F1 adopts negative convexity working roll forming, a machine frame F2, a machine frame F3 and a machine frame F4 adopt cubic CVC working roll forming, and a machine frame F5, a machine frame F6, and a machine frame F7 adopt negative convexity working roll forming of sine curves and are matched with periodic roll shifting of the working roll with long stroke. The supporting rolls of all the machine frames of the finish mill set adopt positive convexity roll forming of sextic polynomes. The method improves the transverse rigidity of the machine frames of the finish mill, improves regulation and control efficiency of roll bending force of the working roll, and reduces flexibility deformation of the roll. The roll forming configuring method for the finish mill set improves stability of the wide flat steel rolling, reduces the deflection amount of the wide flat steel, prolongs the planned length for rolling and greatly improves profile shape control precision of the wide flat steel.

Description

technical field [0001] The invention relates to a configuration method for roll sets in a hot continuous rolling finishing mill of wide-band steel, and belongs to the technical field of steel rolling. Background technique [0002] Plates and strips are widely used in all aspects of industry, agriculture, national defense and daily life, and play an important role in the development of the national economy. The hot strip mill is an important part of the production process of strip steel, and has always been a research hotspot in the field of rolling. With the development of the national economy, especially the rapid development of some modern industrial sectors such as automobiles, cans and household appliances, not only the demand for plates and strips has increased sharply, but also strict requirements have been put forward for their quality. Flatness is an important indicator of the quality of hot-rolled strip steel, and bad defects such as middle wave, edge wave and comp...

Claims

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Application Information

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IPC IPC(8): B21B1/26B21B27/02
Inventor 王晓东余威李飞李彬李明李本海马家骥朱启建张宝辉王秋娜朱国森聂永超潘辉江潇
Owner SHOUGANG CORPORATION
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