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A production method for controlling the warpage of strip steel in the finishing mill

A production method and finishing mill technology, applied in the direction of contour control, metal rolling, etc., can solve problems such as strip steel head flying warping

Active Publication Date: 2020-02-07
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a production method for controlling strip steel flying in the finishing mill, which solves the technical problem in the prior art that the strip head is prone to warping when the strip is finished rolling

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  • A production method for controlling the warpage of strip steel in the finishing mill

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Embodiment 1

[0039] Such as figure 1 As shown, the present embodiment provides a production method for controlling strip flying in a finishing mill, including:

[0040] Step S101: For the lower guide plate, transition plate, and looper skirt at the outlet of the F5 frame and F6 frame, control the height difference between the lower guide plate and the transition plate between 5 mm and 15 mm, and place the transition plate and the looper skirt The height difference between them is controlled between 5mm and 15mm, the lower guide plate is higher than the transition plate, and the transition plate is higher than the looper skirt;

[0041] Step S102: For the lower guide plates at the outlets of the F5 and F6 racks, control the height of the gnawing marks or steps on the lower guide plate to less than 5 mm, and polish the gnawing marks or steps.

[0042] In the specific implementation process, the finishing mill unit has 7 stands in total, namely: F1 stand, F2 stand, F3 stand, F4 stand, F5 sta...

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Abstract

The invention discloses a production method controlling warping of strip steel on a finishing mill. The production method comprises the steps that for a lower guide plate at outlets of an F5 rack andan F6 rack of a finishing mill set, a transition plate and a movable overskirt plate, the height difference between the lower guide plate and the transition plate is controlled to be between 5 mm-15 mm, the height difference between the transition plate and the movable overskirt plate is controlled to be between 5 mm-15 mm, the lower guide plate is higher than the transition plate, and the transition plate is higher than the movable overskirt plate; and for the lower guide plate at the outlets of the F5 rack and the F6 rack, the height of the gnawing marks or steps of the lower guide plate iscontrolled to be lower than 5 mm, and the gnawing marks or the steps are polished. Through the production method, stable and smooth operation of thin-gauge strip steel in the finish rolling strip penetrating process can be ensured, the problem of warping of the head of the strip steel between the finish rolling racks and at the finish rolling outlet is avoided completely, meanwhile rolling stability of the strip steel is ensured, and the risk of steel piling accidents is reduced.

Description

technical field [0001] The invention relates to the technical field of hot rolling and rolling technology, in particular to a production method for controlling the warpage of strip steel in a finishing mill. Background technique [0002] The feature of hot-rolled thin-gauge rolling is that the strip threading speed is relatively fast, especially for products with high final rolling temperature. The head of the strip steel is easy to fall on the downstream stand (such as F5 stand or F6 stand) during the strip threading process of the finishing rolling unit. ) The exit is flying up, causing the head to fold, making it difficult for the next rolling mill to bite in normally or stacked, resulting in serious deviation of the subsequent frame or steel stacking accidents. In addition, flying warps are also prone to occur at the exit of the F7 rack. After the flying warps hit the instrument house at the exit of the F7 rack, the head turns over to form a folding defect, and even stac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28
CPCB21B37/28B21B2201/06
Inventor 王建功姚会忠张卫国荣艳明杨明刘靖群
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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