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Variable wrap angle flatness control parameter processing method for cold rolling mill

A technology for controlling parameters and processing methods, which is applied in the field of cold-rolled strip, and can solve the problem of no guide rollers and so on.

Active Publication Date: 2013-05-01
ANGANG STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, due to the limitation of on-site equipment configuration and installation conditions, there is no guide roller or pressure roller between the plate shape roller and the coiler

Method used

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  • Variable wrap angle flatness control parameter processing method for cold rolling mill
  • Variable wrap angle flatness control parameter processing method for cold rolling mill
  • Variable wrap angle flatness control parameter processing method for cold rolling mill

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specific Embodiment

[0108] This embodiment discloses the flatness measurement and calculation process of a 1250 single-stand six-high reversing cold rolling mill. The coiler is in the upper coiling mode. There is no pressure roll between the coiler and the exit of the rolling mill, and the wrap angle changes in real time. The flatness measurement device adopts the domestically produced non-roller ring type flatness roller [roller diameter 350mm, number of measuring sections 23, length of the roller body 1350mm, width of the sensor cover 60mm]. Product specifications (thickness × width): 0.6mm × 1020mm, material: ST12, rolling speed 500m / min-600m / min, strip outlet temperature 50-60 degrees Celsius.

[0109] (1) Calculation of critical wrap angle

[0110] The critical wrap angle is:

[0111] θ = l r · 180 π

[0112] Among them, l=0.06m, r=0.175m, brought in to get θ=19.64 degrees

[0113...

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Abstract

The invention provides a variable wrap angle flatness control parameter processing method for a cold rolling mill, which is used in a variable wrap angle flatness measuring system of a contact type cold rolling flattening roll and provides conditions for realizing precise flatness control. The measured value processing method presents the relation between the magnitude of radial force borne by a sensor on a contact type flattening roll without a roll collar and a wrap angle, and presents an expression of the measured value of the flatness under the real-time variable wrap angle condition according to the flatness detecting principle of the contact type flattening roll without the roll collar and the stressed state of the sensor under the action of strip steel tension. The model is used ina variable wrap angle flatness measuring system of the contact type cold rolling production flattening roll to obtain precise measured value of flatness.

Description

technical field [0001] The invention belongs to the field of cold-rolled steel strips, and is particularly suitable for the processing and control of the measured value of the flatness of the contact type flatness roll under the condition of variable wrap angle. Background technique [0002] In the cold rolling production process of strip steel, the shape quality is one of the most important technical indicators of the product. In recent years, users have higher and higher requirements for the shape quality of cold-rolled products, especially for manufacturers of automobiles and home appliances. The shape process and control technology of cold-rolled strip steel is very complicated, and it is a representative technology of technical integration and specialization in the field of steel rolling. Iron and steel production enterprises at home and abroad have invested huge manpower, material resources and financial resources to improve the shape quality of products. [0003] As ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28B21B38/06G01B21/20G05B19/04
Inventor 王鹏飞王军生俞小峰刘军张殿华赵启林刘佳伟李丽霞曹忠华候永钢宋蕾
Owner ANGANG STEEL CO LTD
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