Tension comprehensive optimization setting method of six-roll skin pass mill

An optimized setting and leveling technology, applied in the direction of tension/pressure control, contour control, etc., can solve problems such as product quality degradation, unit economic loss, color difference defects, etc.

Inactive Publication Date: 2011-12-21
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, in the case of a given elongation, the setting of the tension of the skin-passing unit on site only considered the treatment of plate shape defects and the limitation of the maximum rolling pressure, but did not consider defects such as for...

Method used

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  • Tension comprehensive optimization setting method of six-roll skin pass mill
  • Tension comprehensive optimization setting method of six-roll skin pass mill
  • Tension comprehensive optimization setting method of six-roll skin pass mill

Examples

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Embodiment 1

[0036] In order to illustrate the basic idea of ​​the present invention, a certain 1850 six-roll skin pass unit is taken as an example, with the help of figure 1To describe the tension optimization setting process of the steel strip with the specification of 1200mm*0.6mm and the steel type of SPCC on a specific skin pass unit.

[0037] First, in step 1, collect the equipment and process parameters of the skin pass unit, including the work roll body length L W =1850mm, working roll diameter D W =360mm, middle roll body length L M =1850mm, intermediate roll diameter D M =400mm, back-up roll body length L b =1850mm, back-up roller diameter D b =900mm, the distance between the drive side of the back-up roller and the center of the screw on the working side is l 1 =2500mm, the center distance between the drive side of the work roll and the bending roll hydraulic cylinder on the work side l 2 =2500mm, the equivalent stiffness K of the rolling mill m = 2676000, equivalent mass...

Embodiment 2

[0065] In order to further illustrate the basic idea of ​​the present invention, a certain 1850 six-roll skin pass unit is taken as an example, with the help of figure 1 To describe the tension optimization setting process of the steel strip with the specification of 1600mm*1.0mm and the steel type of DC06 on a specific skin pass unit.

[0066] First, in step 1, collect the equipment and process parameters of the skin pass unit, including the work roll body length L W =1850mm, working roll diameter D W =360mm, middle roll body length L M =1850mm, intermediate roll diameter D M =420mm, back-up roll body length L b =1850mm, back-up roller diameter D b =900mm, the distance between the drive side of the back-up roller and the center of the screw on the working side is l 1 =2500mm, the center distance between the drive side of the work roll and the bending roll hydraulic cylinder on the work side l 2 =2500mm, the equivalent stiffness K of the rolling mill m = 2676000, equiva...

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Abstract

The invention discloses a method for comprehensively optimizing tension setting of a six-roll skin pass unit, which belongs to the technical field of skin pass production. Fully considering the equipment and process characteristics of the six-high skin pass mill during the wet skin pass rolling process, according to this method, the set value of the tension of the six-roll pass pass unit is determined, and a set of optimal tension set values ​​of the pass pass machine is determined. Within the critical point, under the premise that the vibration judgment conditions are satisfied and the rolling pressure is not out of tolerance, the distribution of front tension, rolling pressure, and roll pressure is the most uniform in the transverse direction, and finally realize the improvement under the premise of ensuring that the skin pass unit does not slip and vibrate. The shape and surface quality of the finished strip can be improved to reduce the occurrence probability of color difference defects on the strip surface.

Description

technical field [0001] The invention belongs to the technical field of skin-pass production, and in particular relates to a method for comprehensively optimizing tension setting of a six-roll skin-pass machine. Background technique [0002] In recent years, with the development of social economy, the demand for plates and strips is increasing, and people's requirements for the quality of plates and strips are also getting higher and higher. As the process closest to the finished product in cold-rolled strip production, leveling can not only ensure the mechanical properties and shape quality of the annealed product by controlling the elongation and shape of the strip, but also form a certain roughness, to achieve the purpose of improving the strip coating performance and formability. In the past, in the case of a given elongation, the setting of the tension of the skin-passing unit on site only considered the treatment of plate shape defects and the limitation of the maximum...

Claims

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Application Information

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IPC IPC(8): B21B37/48B21B37/28
Inventor 王凤琴解家英朱启建尹显东乔建军申延智闻达柳智博周利白振华王洋齐海英苏昊郭俊明宁林新
Owner SHOUGANG CORPORATION
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