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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  • 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-rol

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

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Example Embodiment

[0024] Example 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 grades, distinguishing steel grades and tension setting values ​​(T set ), tension coefficient (T), etc., according to the set value given in the first row 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 signs of different steel grades and each set value according to the table are all delivered by the secondary computer. The coiling variable tension control is realized by the 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 value at sampling time n (variable tension coefficient initial...

Example Embodiment

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

[0027] The 300 series stainless steel coiling variable tension control technology of this embodiment is different from the first embodiment: 1. The 300 series stainless steel coiling variable tension control technology of this embodiment is applied to the rolling steel grade of stainless steel 301 (thin material, Narrow material) production; 2. Distinguish the mark and tension setting value (T set ), variable tension coefficient (T), etc., according to the setting value given in the second row of Table 1: Tension setting value N / mm 2 T set : Take 11.4, the variable tension coefficient T: Take 1.15, the thickness is 3.0mm, etc.; 3.X n : Variation value at sampling time n, in this example, the value is -2 after the variation starts; T a: The sampling period of the computer CPU in milliseconds, in this case T a Choose 20ms; T 1 : Scan time in milliseconds derived from experience, in this case T...

Example Embodiment

[0028] Example 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 the first and second embodiments: 1. The 300 series stainless steel coiling variable tension control technology of this embodiment is applied to the rolled steel grade 301. (Thick material, wide material) production; 2. Differentiating the steel type mark and tension setting value (T set ), variable tension coefficient (T), etc., according to the setting value given in the third row of Table 1: Tension setting value N / mm 2 T set :Take 10.9, variable tension coefficient T: Take 1.15, thickness 5.0mm, etc.; 3.X n : Variation value at sampling time n, in this example, the value is -4 after the variation starts; T a : The sampling period of the computer CPU in milliseconds, in this case T a Choose 100ms; T 1 : Scan time in milliseconds derived from experience, in this case T 1 C...

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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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