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Coiling variable tension control technology for 300 series stainless steel

A tension control, stainless steel technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of power failure of the reel motor, excessive setting value, etc., to achieve stable and reliable control, improve plate shape, The effect of improving the poor shape of the head

Inactive Publication Date: 2007-04-11
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, improving the coiling shape is the goal of our work. According to experience, the control of the tension of the hot-rolled coiling strip is one of the keys to the technology. The reel motor is over-current and power-off at the end of the strip steel

Method used

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  • Coiling variable tension control technology for 300 series stainless steel
  • Coiling variable tension control technology for 300 series stainless steel
  • Coiling variable tension control technology for 300 series stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1. 300 series stainless steel coiling variable tension control technology

[0025] The 300 series stainless steel coiling variable tension control technology of this embodiment is applied to the production of stainless steel 301 (thin material, wide material) for rolling steel grade specifications, and distinguishes the mark and tension setting value of the steel grade (T set ), tension coefficient (T), etc., are taken according to the set value given in the first line of Table 1: tension set value N / mm 2 T set : take 12.8, variable tension coefficient T: take 1.15, thickness is 3.0mm, etc., the marks for distinguishing steel types and each set value are all sent down by the secondary computer according to the table. The coiling variable tension control is realized by a first-level computer, and the variable tension coefficient value is calculated according to formula (1): T n ==T n-1 +T a / T 1 ×X n , (1) where: T n : Variable tension coefficient valu...

Embodiment 2

[0026] Embodiment 2. 300 series stainless steel coiling variable tension control technology

[0027] The 300 series stainless steel coiling variable tension control technology of the present embodiment is different from Embodiment 1 in that: 1. The 300 series stainless steel coiling variable tension control technology of the present embodiment is applied to the rolling steel grade specification and is stainless steel 301 (thin material, Narrow material) production; 2. Mark and tension setting value for distinguishing steel grades (T set ), tension coefficient (T), etc., are taken according to the set value given in the second line of Table 1: Tension set value N / mm 2 T set : take 11.4, variable tension coefficient T: take 1.15, thickness is 3.0mm, etc.; 3.X n : The tension value at the sampling time n, in this example, take the value -2 after the tension starts; T a: The sampling period of the computer CPU in milliseconds, in this example T a Choose 20ms; T 1 : Empirical...

Embodiment 3

[0028] Embodiment 3. 300 series stainless steel coiling variable tension control technology

[0029] The 300 series stainless steel coiling variable tension control technology of this embodiment is different from Embodiment 1 and Embodiment 2 in that: 1. The 300 series stainless steel coiling variable tension control technology of this embodiment is applied to the rolling steel grade and the specification is stainless steel 301 (thick material, wide material) production; 2. Mark and tension setting value for distinguishing steel types (T set ), variable tension coefficient (T), etc., are taken according to the set value given in the third line of Table 1: tension set value N / mm 2 T set : take 10.9, variable tension coefficient T: take 1.15, thickness is 5.0mm, etc.; 3.X n : The variable tension value at the sampling time n, in this example, the value is -4 after the variable tension starts; T a : The sampling period of the computer CPU in milliseconds, in this example T a...

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Abstract

The invention of roll changing tension controlling technology for 300 series stainless steel belongs to the field of heat-rolled steel control, which is controlled by the two-level computer. Its features are: the second-level computer completes sending the setting value, the coefficient of changing tension and the mark for distinction of different kinds of steel, the first computer completes the control of coiling changing tension to realize the automatic controlling production. The advantages are: 1. It resolves the allocation and release of hot strip coiling strip head and internal stress, 2. It can improve the shape of coiler, especially the head bad shape, 3. It solves the problem of over-current in coiler and saves the investment of equipment, 4. It also provides protection for improving the quality of 300-series cold-rolled stainless steel, and improves the problem of bad shape of head.

Description

1. Technical field [0001] The coiling variable tension control technology for 300 series stainless steel disclosed by the invention belongs to the technical field of coiling control for hot-rolled strip steel, and in particular relates to the coiling variable tension control technology for hot continuous rolling 300 series stainless steel. 2. Background technology [0002] The distribution, distribution, and release of thermal stress inside the coiling head of hot continuous rolling, as well as the problems affecting the macroscopic shape of the strip and the microscopic metallographic structure of the strip, as well as the related material and performance issues, are important issues in the production of steel rolling. The difficulties encountered not only involve multidisciplinary theories such as crystallography, metallography, molecular science, and thermodynamics, but also face complex environments in actual steel rolling production, and there are many unstable or change...

Claims

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Application Information

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IPC IPC(8): G05B19/418G05B19/02B21C47/02
CPCY02P90/02
Inventor 张世厚尹晓雷王津平康炜
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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