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Roller taper defect treatment method for four-high rolling mill

A four-high rolling mill and roll technology, which is applied in metal rolling stands, metal rolling mill stands, metal rolling and other directions, can solve the problems of little research on roll taper, unable to achieve quantitative control, etc., to improve the accuracy and quality Effect

Inactive Publication Date: 2015-04-22
山东冠洲股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of cold rolling control technology, a large number of factors affecting the shape of the plate, such as the shape of the incoming material, the cross-sectional shape of the incoming material, bending roll shifting, strip deviation, machine configuration, and rolling mill stiffness, have been made. In-depth research can get very high-precision control [2] , however little research has been done on the roll taper problem
In the past, scholars mainly described the flatness problem caused by the roll taper caused by poor grinding of the roll and its solution strategies qualitatively. At the enterprise site, it almost completely relied on the experience of the operator, and it was impossible to achieve conscious quantitative control.

Method used

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  • Roller taper defect treatment method for four-high rolling mill
  • Roller taper defect treatment method for four-high rolling mill
  • Roller taper defect treatment method for four-high rolling mill

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] exist figure 1 In the general calculation flow chart of the method for treating roll taper defects applicable to four-high rolling mills shown, first, in step (a), the collection of basic equipment parameters mainly includes the roll body length L of the upper back-up roll 1 =1450mm, length L of the upper working roll 2 =1450mm, length L of the lower working roll 3 =1450mm, the length L of the roller body of the lower support roller 4 =1450mm, roll diameter D of upper support roll 1 =1100mm, roll diameter D of the upper work roll 2 =500mm, roll diameter D of the lower work roll 3 =500mm, roll diameter D of the lower support roll 4 =1100mm, the roll shape distribution value D of the lower work roll after removing the conical defect 3yi ={499.9935,499.9947,499.9958,499.9968,499.9978,499.9987,499.9995,500.0002,500.0009,500.0015,500.0020,500.0024,500.0028,500.0031,500.0033,500.0035,500.0035,500.0035,500.0035,500.0033,500.0031,500.0028,500.0024,,500.0020 , 500.0015, 5...

Embodiment 2

[0046] First of all, in step (a), the collection of basic equipment parameters mainly includes the roll body length L of the upper support roll 1 =1450mm, length L of the upper working roll 2 =1450mm, length L of the lower working roll 3 =1450mm, the length L of the roller body of the lower support roller 4 =1450mm, roll diameter D of upper support roll 1 =1100mm, roll diameter D of the upper work roll 2 =500mm, roll diameter D of the lower work roll 3 =500mm, roll diameter D of the lower support roll 4 =1100mm, the roll shape distribution value D of the upper and lower work rolls after removing the tapered defects 2yi =D 3yi ={499.9935,499.9947,499.9958,499.9968,499.9978,499.9987,499.9995,500.0002,500.0009,500.0015,500.0020,500.0024,500.0028,500.0031,500.0033,500.0035,500.0035,500.0035,500.0035,500.0033,500.0031,500.0028,500.0024,,500.0020 , 500.0015, 500.0009, 500.0002, 499.9995, 499.9987, 499.9978, 499.9968, 499.9958, 499.9947, 499.9935} Upper work roll profile curve...

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Abstract

A roller taper defect treatment method for a four-high rolling mill mainly includes the following steps executed by a computer of 1 collecting basic device parameters; 2 collecting basic rolling process parameters of products of typical specifications; 3 defining an optimal roller inclining calculation process variable, a roller inclining amount, a roller inclining optimal step size, an objective function, an initial value of the objective function, a working roller channeling amount, a working roller bending force and an optimal roller inclining amount; 4 calculating the working roller channeling amount, the working roller bending force, the roller inclining amount and lateral distribution values of front tension of strips at an outlet of the rolling mill; 5 calculating the objective function; 6 completing the calculation after obtaining the roller inclining amount. The roller taper defect treatment method for the four-high rolling mill can achieve quantitative compensation for roller taper defects, minimizes or even eliminates the impact of the roller taper defects on the shape of the strips, solves the problem that the treatment of strip shape defects caused by roller taper is almost entirely dependent on experience of field operators and improves the accuracy quality of rolled strips.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, in particular to a method for treating roll taper defects of a common four-high rolling mill. Background technique [0002] Roll taper refers to the phenomenon that during the rolling process, the roll has a certain taper due to the grinding machine precision and the wear caused by the production process. [1] , directly affects the yield of strip products and the quality of subsequent deep-processing products and the smooth progress of deep processing. With the continuous development of cold rolling control technology, a large number of factors affecting the shape of the plate, such as the shape of the incoming material, the cross-sectional shape of the incoming material, bending roll shifting, strip deviation, machine configuration, and rolling mill stiffness, have been made. In-depth research can get very high-precision control [2] , however, little research has been done on the roll ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/30
CPCB21B37/30B21B2027/022B21B2271/025
Inventor 白振华刘亚星陈双玉常金梁乔璇侯彬
Owner 山东冠洲股份有限公司
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