Complete roll forming configuring method for wide flat steel hot rolling finish mill set
A technique for finishing rolling mills and configuration methods, which is applied to rolls, metal rolling, metal rolling, etc., and can solve problems such as unreasonable configuration of work rolls and back-up rolls
Active Publication Date: 2011-12-28
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 unreasonable configuration of work rolls and backup rolls in hot-rolling wide-band steel finishing mills, and improves cooling capacity. Crown and Shape Control Stability of Rolled Strip and Silicon Steel
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Embodiment Construction
[0061] Shougang Qiangang 1580mm hot-rolled wide-band steel production line was put into operation in November 2009. At the initial stage of production, the finishing mill was a 7-stand four-high rolling mill. The work rolls and backup rolls had no roll shape. All the stand rolls were made of Flat roll shape, the main problems that lead to flatness control are:
[0062] 1) The shape control accuracy is low;
[0063] 2) The rolling stability of thin gauge is poor.
[0064] In order to improve the control accuracy of the crown and flatness of the hot-rolled strip and the stability and shape quality of the thin-gauge strip, it is necessary to design the work rolls and backup rolls of the finishing mill. According to the characteristics of the control crown of the upstream stand and the control flatness of the downstream stand of the hot continuous rolling wide steel finishing line, a new roll shape configuration method of the finishing line is finally determined. The specific id...
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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 finishmill 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 ofroll 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 roll shape configuration method for a hot continuous rolling finishing mill of wide-band steel, and belongs to the technical field of steel rolling. Background technique [0002] Sheets and strips are widely used in industry, agriculture, national defense and all aspects of daily life, and play an important role in the development of the national economy. Hot tandem mill is an important part of the strip production process 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, can making and household appliances, not only the demand for sheet and strip materials has increased sharply, but also strict requirements have been placed on their quality. Flatness is an important indicator of the quality of hot-rolled strip, and defects such as middle wave, edge wave and composite wave are on...
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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