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Control method for eliminating upwarp phenomenon of short-process ultra-thin strip steel

A control method and ultra-thin strip technology, which is applied in the field of hot-rolled strip manufacturing, can solve problems such as process instability of ultra-thin strip steel, achieve large-scale production with high stability, easy operation, and solve the effects of process instability

Active Publication Date: 2019-09-10
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the deficiencies in the prior art, and provides a control method for eliminating the flying warp of the short-flow ultra-thin strip steel, so as to solve the technical problems such as the unstable process of the short-flow ultra-thin strip rolling, and realize the short-flow rolling extremely thin strip. The purpose of large-scale production of high-quality and high-stability thin-gauge hot-rolled strip steel

Method used

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  • Control method for eliminating upwarp phenomenon of short-process ultra-thin strip steel
  • Control method for eliminating upwarp phenomenon of short-process ultra-thin strip steel
  • Control method for eliminating upwarp phenomenon of short-process ultra-thin strip steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: producing SPHC-B with a thickness of 0.8 mm.

[0051] ①Rolling mill work roll pressure:

[0052]

[0053] ② Strip threading speed:

[0054] Finished product thickness / mm Strip head threading speed m / s 0.8 9.41

[0055] ③Sequence of dedusting water:

[0056]

[0057] ④Slight bilateral wave rolling:

[0058]

[0059] ⑤ Uneven wear of work rolls:

[0060]

[0061] ⑥F6, F7 reduction rate:

[0062]

[0063] Effect: The problem of strip steel lifting did not occur throughout the year.

Embodiment 2

[0064] Embodiment 2: producing SPHC-B with a thickness of 1.0 mm.

[0065] ①Rolling mill work roll pressure:

[0066]

[0067] ② Strip threading speed:

[0068] Finished product thickness / mm Strip head threading speed m / s 1.0 9.52

[0069] ③Sequence of dedusting water:

[0070]

[0071] ④Slight bilateral wave rolling:

[0072]

[0073] ⑤ Uneven wear of work rolls:

[0074]

[0075] ⑥F6, F7 reduction rate:

[0076]

[0077] Effect: The problem of strip steel lifting did not occur throughout the year.

Embodiment 3

[0078] Embodiment three: producing SPHC-B with a thickness of 1.2 mm.

[0079] ①Rolling mill work roll pressure:

[0080]

[0081] ② Strip threading speed:

[0082] Finished product thickness / mm Strip head threading speed m / s 1.2 9.6

[0083] ③Sequence of dedusting water:

[0084]

[0085] ④Slight bilateral wave rolling:

[0086]

[0087] ⑤ Uneven wear of work rolls:

[0088]

[0089] ⑥F6, F7 reduction rate:

[0090]

[0091] Effect: The problem of strip steel lifting did not occur throughout the year.

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Abstract

The invention discloses a control method for eliminating the upwarp phenomenon of short-process ultra-thin strip steel. The control method comprises the steps of controlling the rolling pressure of working rolls of a rolling mill, the belt threading speed of strip steel, dust and water removal time sequence, micro double-side-wave rolling, uneven wear to the working rolls and conditions and parameters of the reduction rate. Compared with the prior art, the control method has the advantages that the problem that a rear-section rack becomes warped during short-process ultra-thin strip steel rolling is solved; the technical problems of instability of the short-process ultra-thin strip steel rolling process can be solved; and the purpose of high-quality and high-stability scale production of the short-process rolled ultra-thin strip steel is achieved.

Description

technical field [0001] The invention relates to a production method of strip steel, in particular to a control method for eliminating warping of extremely thin strip steel in a short process, and belongs to the technical field of hot-rolled strip manufacturing. Background technique [0002] The variety development of the CSP production line (thin slab continuous casting and rolling production line) is subject to the molten steel smelting and continuous casting process caused by the thinning of the slab, and due to its characteristics, it is more conducive to thin material production than conventional hot rolling, and at the same time Under the impetus of "cooling the tropics", the market potential of thin materials is huge. [0003] At present, when producing ultra-thin steel strips, there are high rolling speeds, F6, F7 stand strip head floats up, light stack rolling enters F7 stand or flips up on the conveying roller table after exiting F7, and serious ones directly on the...

Claims

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Application Information

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IPC IPC(8): B21B37/28B21B37/72
CPCB21B37/28B21B37/72B21B2201/06
Inventor 李波田军利高智王青赵敏赵强余晓龙张亦辰
Owner 武汉钢铁有限公司
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