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Control method for reducing transverse thickness difference of hot-rolled strip steel

A technology of hot-rolled strip steel and control method, which is applied to the rolling mill control device, rolling force/roll gap control, metal rolling, etc.

Active Publication Date: 2020-07-10
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

At present, there is no better method to reduce the transverse thickness difference of hot-rolled strip thickness.

Method used

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  • Control method for reducing transverse thickness difference of hot-rolled strip steel
  • Control method for reducing transverse thickness difference of hot-rolled strip steel
  • Control method for reducing transverse thickness difference of hot-rolled strip steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Utilize a kind of control method of reducing the lateral thickness difference of hot-rolled strip steel of the present invention, produce W20P, concrete control comprises:

[0064] ① Slab thickness:

[0065]

[0066] ②Finish-rolled high-speed steel configuration:

[0067] frame F5 F6 F7 material high speed steel high speed steel high speed steel

[0068] ③Work roll cooling water volume:

[0069] Variety frame F5 F6 F7 W20P amount of water 90％ 90％ 90％

[0070] ④Work roll shape:

[0071] frame a1 a2 a3 F5 / F6 / F7 9.49688e-04 -1.3750e-06 5.0000e-10

[0072] ⑤Vertical roller pressure:

[0073]

[0074] ⑥Rolling oil parameters:

[0075] Variety frame F2 F3 F4 F5 F6 W20P oil quantity 40 40 40 45 45

[0076] ⑦ Effect:

[0077]

Embodiment 2

[0079] Utilize a kind of control method of reducing the lateral thickness difference of hot-rolled strip steel of the present invention, produce W23P, concrete control comprises:

[0080] ① Slab thickness:

[0081]

[0082] ②Finish-rolled high-speed steel configuration:

[0083] frame F5 F6 F7 material high speed steel high speed steel high speed steel

[0084] ③Work roll cooling water volume:

[0085]

[0086]

[0087] ④Work roll shape:

[0088] frame a1 a2 a3 F5 / F6 / F7 9.49688e-04 -1.3750e-06 5.0000e-10

[0089] ⑤Vertical roller pressure:

[0090]

[0091] ⑥Rolling oil parameters:

[0092] Variety frame F2 F3 F4 F5 F6 W20P oil quantity 50 50 50 60 60

[0093] ⑦ Effect:

[0094]

Embodiment 3

[0096] Utilize a kind of control method of reducing the lateral thickness difference of hot-rolled steel strip of the present invention, produce W30P, specific control includes:

[0097] ① Slab thickness:

[0098]

[0099] ②Finish-rolled high-speed steel configuration:

[0100] frame F5 F6 F7 material high speed steel high speed steel high speed steel

[0101] ③Work roll cooling water volume:

[0102] Variety frame F5 F6 F7 W30P amount of water 90％ 90％ 90％

[0103] ④Work roll shape:

[0104] frame a1 a2 a3 F5 / F6 / F7 9.49688e-04 -1.3750e-06 5.0000e-10

[0105] ⑤Vertical roller pressure:

[0106]

[0107] ⑥Rolling oil parameters:

[0108] Variety frame F2 F3 F4 F5 F6 W20P oil quantity 50 50 50 60 60

[0109] ⑦ Effect:

[0110]

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Abstract

The invention discloses a control method for reducing the transverse thickness difference of hot-rolled strip steel. Rolling control process parameters are designed by control over the thickness of acontinuous casting machine plate blank, configuring of finish rolling high-speed steel, roller cooling, the working roller channeling stroke, the vertical roller side pressure and the oil mass of rolling oil, so that the purpose of reducing the transverse thickness difference of the hot-rolled strip steel is achieved. Transverse thickness plate shape indexes of hot-rolled silicon steel raw materials can be remarkably increased, the silicon steel sheet 7u intra-plate difference precision is improved from 90% to 93%, and the 5u intra-plate difference precision is improved from 40% to 80%. On thepremise of guaranteeing the plate shape indexes, the rolling period is prolonged from 800 tons to 1,800 tons, and the roller consumption during silicon steel rolling is remarkably reduced.

Description

technical field [0001] The invention relates to a control method of hot-rolled strip steel, in particular to a control method for reducing the transverse thickness difference of hot-rolled strip steel, and belongs to the technical field of hot-rolled strip steel. Background technique [0002] The CSP production line can realize the production of silicon steel. With the development of silicon steel process technology and the fierce market competition, through benchmarking with Baosteel, in order to improve the yield of the process, the silicon steel process has vigorously promoted "burr edge" (no edge trimming) rolling, and it is required to realize all low- and medium-grade non-oriented silicon steel. Realize acid rolling without trimming. [0003] To improve the yield of the process, the accuracy of the same plate difference is the premise. Because the accuracy of the same plate difference of the silicon steel sheet is closely related to the raw material, the quality techn...

Claims

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Application Information

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IPC IPC(8): B21B37/00B21B37/16B21B27/06B21B37/58
CPCB21B27/06B21B37/00B21B37/16B21B37/58B21B2037/002B21B2201/06
Inventor 姜南何国赛高智田军利刘义滔陈剑飞王成程曦郑海涛
Owner 武汉钢铁有限公司
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