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Hot-rolled strip steel moderate sea profile shape controlling method

A technology for hot-rolled strip steel and corrugated sheet, which is applied in the field of corrugated sheet shape control method in hot-rolled strip steel, and can solve problems such as double-sided waves

Inactive Publication Date: 2004-03-31
ANGANG STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method of controlling the hot-rolled strip's mid-wave shape by adopting the mid-wave PCSU setting control for the head of the strip and adopting dynamic ASC mid-wave control for the rear part, so as to solve the problem of hot-rolled strip due to cooling. bilateral wave defect

Method used

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  • Hot-rolled strip steel moderate sea profile shape controlling method
  • Hot-rolled strip steel moderate sea profile shape controlling method
  • Hot-rolled strip steel moderate sea profile shape controlling method

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Embodiment Construction

[0044] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0045] Such as figure 1 As shown, in the hot-rolled strip steel production line consisting of slab heating—rough rolling—finish rolling—laminar cooling—coiling—finished product, the wave shape control link is added to the finishing rolling unit, and its The purpose is to overcome the residual stress formed by the temperature drop and phase deformation caused by laminar cooling by adopting PCSU setting control for the strip head and ASC dynamic mid-wave control for the rear part, so that the double-sided waves of the strip are made The finished strip has good shape. As shown in Figure 2, the middle wave PCSU setting control process of the hot-rolled strip middle wave plate shape control method of the present invention is: adopt the middle wave PCSU control to the strip head, that is, the PC setting control,

[0046] The described Zhonglan...

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Abstract

A method of controlling moderate-sea strip shape of controlling strip steel. The head of strip steel is controlled by moderate-sea PCSU control, that is, PC setting control. The rear of strip steel is controlled by dynamically automatic strip shape moderate-sea control, which is dynamic ASC control. Determining the objective control degree of moderate-sea flatness of strip steel, calculating convexity of finish rolling strip steel, equivalent heat convexity of roller, coefficient of extension and flatness of strip steel. According to kinds, scales of steel, determining factors, constant terms, proportion factors in formulas, making moderate-sea control on flatness of exported finish rolling strip steel. Two-side sea in cooling could be effectively eliminated, which improves the quality ofstrip steel.

Description

technical field [0001] The invention belongs to the field of hot-rolled strip steel, in particular to a method for controlling the corrugated shape of the hot-rolled strip steel, which is applicable to the shape control of various hot-rolled strip factories. Background technique [0002] The shape control of hot-rolled strip plays an important role in the quality of hot-rolled strip. At present, many technologies for controlling the shape of hot-rolled strip have been successfully developed. There are mainly the following methods: [0003] 1. Process control method, including planned rolling method, tension control method, roll temperature adjustment method and asynchronous rolling method, etc. [0004] 2. Equipment control method, mainly including initial roll shape method (including work roll and backup roll), hydraulic roll bending method, stepped backup roll method, roll crown adjustment method, roll moving method, online grinding roll method, and roll cross control meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/28
Inventor 赵林沙孝春黄浩东杨旭
Owner ANGANG STEEL CO LTD
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