Plate production method by hot continuous rolling

A production method and hot continuous rolling technology, applied in the direction of rolling, metal rolling, metal rolling, etc., can solve the problems of increasing labor intensity of workers and the impact of rolling mill operation rate, and achieve the effect of reducing labor intensity and improving production capacity.

Active Publication Date: 2013-01-02
LAIWU STEEL YINSHAN SECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only increases the labor intensity of workers, but also affects the operating rate of the rolling mill

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Raw material end face specification size: 160mm×1250mm

[0038] Steel type: Q235B

[0039] Checkered plate product specifications and sizes are: 5.5mm × 1250mm

[0040] The temperature of each section of finish rolling: the entrance of finish rolling is 1040~1070°C; the finish rolling is 940~970°C.

[0041] F1~F5 finish rolling work roll configuration before finished roll is shown in Table 2 above, F6 work roll crown is -0.14~0mm.

[0042] The range of parameters such as the reduction distribution rate of the corresponding checkered plate product 5.5mm×1250mm is shown in Table 3.

[0043] Table 3 Checkered plate products 5.5mm×1250mm (middle billet thickness: 34~35mm)

[0044] project

Embodiment 2

[0046] Raw material end face specification size: 160mm×1250mm

[0047] Steel type: Q235B

[0048] Checkered plate product specifications and sizes are: 6.0mm × 1250mm

[0049] The temperature of each section of finish rolling: the entrance of finish rolling is 1040~1070°C; the finish rolling is 940~970°C.

[0050] F1~F5 finish rolling work roll configuration before finished roll is shown in Table 2 above, F6 work roll crown is -0.14~0mm.

[0051] The range of parameters such as the reduction distribution rate of the corresponding checkered plate product 6.0mm×1250mm is shown in Table 4.

[0052] Table 4 checkered plate products 6.0mm×1250mm (middle billet thickness: 34~35mm)

[0053] project

Embodiment 3

[0055] Raw material end face specification size: 160mm×1250mm

[0056] Steel type: Q235B

[0057] Flat product specifications and sizes are: 6.0mm×1250mm

[0058] The temperature of each section of finish rolling: the entrance of finish rolling is 1040~1070°C; the finish rolling is 940~970°C.

[0059] The profile configuration of the finished work rolls of F1~F5 is shown in Table 2 above, and the crown of the work rolls of F6 is -0.18~-0.1mm.

[0060] See Table 5 for the range of parameters such as the reduction distribution ratio of the corresponding flat product 6.0mm×1250mm.

[0061] Table 5 Flat product 6.0mm×1250mm (middle billet thickness: 34~35mm)

[0062] project

F1

F2

F3

F4

F5

F6

Speed ​​(m / s)

1.1

1.7

2.3

2.81

3.5

4.61

Reduction rate%

35～40

31～34

24～28

23～27

21～24

11～14

Rolling force budget (t)

1400～1600

1300～1500

...

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PUM

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Abstract

The invention discloses a plate production method by hot continuous rolling and belongs to the technical field of steel rolling. The method includes heating, rough rolling, finish rolling and cooling processes, working rolls used by frames F1, F2, F3, F4 and F5 during checkered plate rolling and flat plate rolling in a finishing rolling unit in the finish rolling process are identical in roll type configuration, the convexity of the working roll of the frame F1 is -0.12--0.14mm, the convexity of the working roll of the frame F2 is -0.12--0.14mm, the convexity of the working roll of the frame F3 is -0.12--0.14mm, the convexity of the working roll of the frame F4 is -0.10--0.14mm, and the convexity of the working roll of the frame F5 is -0.10--0.14mm. When checkered plate rolling and flat plate rolling are switched mutually, change of the working rolls of the frames F1-F5 is omitted, 5 minutes can be averagely saved each time, rolled steel can be increased by more than 20 tons, labor intensity of workers is relieved, and production capacity of rolling machines is further improved.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a production method of continuous hot rolling of plates. In the method, the working rolls of stands F1 to F5 in the finishing rolling mill have the same roll configuration when rolling checkered plates and flat plates, that is, rolling The checkered plate is shared with the working rolls of the F1-F5 stands when rolling the flat plate. Background technique [0002] Checkered plates are widely used in industries such as construction, shipbuilding, transportation, and machinery manufacturing. Hot continuous rolling is the main process for producing checkered plates. There is an obvious difference in the rolling load distribution between checkered plate and flat plate: flat plate load distribution (rolling force or power distribution method) generally decreases gradually from frame F1 to F6 load; for patterned roll frame (finished product frame), in order to ensure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B27/02B21B37/58B21D13/04
Inventor 王奉县路峰王孝科尹翠兰亓伟伟杨旭赵培林孙建卫李四军郝帅
Owner LAIWU STEEL YINSHAN SECTION CO LTD
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