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Parameter compensation method and control method for short stroke control of head-tail width of strip steel

A technology of short-stroke control and parameter compensation, which is applied in the direction of metal rolling stands and metal rolling mill stands, and can solve the problems of affecting product width accuracy and reducing the width adjustment efficiency of vertical roll rolling, etc.

Active Publication Date: 2013-03-20
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "dog bone" part will develop back during the subsequent horizontal rolling, which will reduce the width adjustment efficiency of vertical roll rolling and affect the width accuracy of the product

Method used

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  • Parameter compensation method and control method for short stroke control of head-tail width of strip steel
  • Parameter compensation method and control method for short stroke control of head-tail width of strip steel
  • Parameter compensation method and control method for short stroke control of head-tail width of strip steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0140] Embodiment 1 Silicon steel width control method

[0141] In this embodiment, the head and tail width of a batch of steel whose steel type is DW60 is controlled by the following method, and the head and tail width of the slab is controlled,

[0142] (1) Control the width of the finished slab by file

[0143] Wherein according to the measured width of the slab measured by the slab width measuring instrument device, according to the method calculation of the specific embodiment of the invention table 2 and 3, the blank width for control and the target width of the finished product are calculated, specifically as shown in the following table:

[0144] The blank and the width data of finished product in the embodiment 1 of table 7

[0145] Blank measured width (mm)

Blank Width for Control (mm)

Finished product target width (mm)

1253.646

1255

1255

1262.936

1265

1268

1255.825

1255

1255

1243.29

1245

124...

Embodiment 2

[0152] Embodiment 2: stainless steel width control method

[0153] 1. Control the width of the finished slab by file

[0154] 1.1 Use the calculation method in Table 4-6 to control the head and tail width of a batch of 430 steel. Wherein, according to the measured width of the slab measured by the slab width measuring instrument device, the actual measured width of the slab determined according to the calculation method in Table 4-6 of the specific embodiment of the invention, the blank width for control, the nominal width of the finished product, and the finished product width data for control are as follows As shown in the table:

[0155] Table 9 The width data of blanks and finished products of steel grade 430

[0156]

[0157] 1.2 Control the head and tail width of a batch of steel with steel type 409 through the calculation method in Table 4-6. Wherein, according to the actual measured width of the slab measured by the slab width measuring instrument device, the act...

Embodiment 3

[0172] Embodiment 3: the width control method when the stainless steel blank width is too wide

[0173] 1. Control the width of the finished slab by file

[0174] Control the head-to-tail width of a batch of 430 steel by the calculation method in Table 4-6. Wherein, according to the measured width of the slab measured by the slab width measuring instrument device, the actual measured width of the slab determined according to the calculation method in Table 4-6 of the specific embodiment of the invention, the blank width for control, the nominal width of the finished product, and the finished product width data for control are as follows As shown in the table:

[0175] Table 14: Width data of blanks and finished products of steel grade 430

[0176] Billet measured width (mm)

Blank width for control (mm)

Finished nominal width (mm)

Finished product width for control (mm)

1290.354

1290

1235

1253

1288.141

1290

1235

1253 ...

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Abstract

The invention relates to a parameter compensation method and a control method for short stroke control of the head-tail width of strip steel in a hot rolling process. The parameter compensation method comprises the steps as follows: correcting fb1, fb2 and fb3 in SSC (Short Stroke Control) parameters and calculating by the following formulae in the correcting process: fb1'=fb1+(swid-cwid)*w_coff1, fb2'=fb2+(swid-cwid)*w_coff2, and fb3'=fb3+(swid-cwid)*w_coff3, wherein swid represents the width of a plate blank, cwid represents the width of a finished product, and w_coff1, w_coff2 and w_coff3 represent lateral pressure quantity correcting coefficients and have different values according to different values of swid-cwid. The invention further relates to the control method for the shape of the head-tail width of the strip steel, and the SSC parameters in the control method are determined through the SSC parameter compensation method. The control method also comprises the step of classifying width values of blanks adopted in the hot rolling process according to the practical widths of the blanks. The exceeded part of the head-tail width of the strip steel after control is smaller and the reduced part is reduced.

Description

technical field [0001] The invention relates to a method for controlling the width and shape of the head and tail in steel plate rolling, and belongs to the technical field of metallurgical process control and automation. Background technique [0002] In the hot continuous rolling process of steel billet, how to control the width and shape of the head and tail has become an important parameter for the control of the hot continuous rolling process. The equipment steps of the common hot continuous rolling production line are as attached figure 1 In the hot continuous rolling process shown, the hot continuous rolling production line includes a furnace zone 1 , a rough rolling zone 13 , a finish rolling zone 14 and a coiling zone 15 . The furnace area includes 4 heating furnaces, namely 0#, 1#, 2# and 3# heating furnaces; the rough rolling area includes high-pressure water descaling box 2, rough rolling vertical roll mill (VE0) 3, rough rolling flat roll mill (R0) 4 and heat p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/22
Inventor 邱华东常春报陈艳芳赵平荣
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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