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Fan-shaped section cooling device of slab continuous casting machine and control method

A cooling device and slab continuous casting technology, applied in the field of steel rolling, can solve problems such as steel plate claw cracking

Inactive Publication Date: 2021-01-05
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a cooling device and control method for the sector section of the slab continuous casting machine, which solves the problem that when the ordinary cooled slab is directly loaded into the heating furnace, the steel plate obtained by rolling in the later stage is prone to cracking on the entire plate surface. Technical issues with crack defects

Method used

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  • Fan-shaped section cooling device of slab continuous casting machine and control method
  • Fan-shaped section cooling device of slab continuous casting machine and control method
  • Fan-shaped section cooling device of slab continuous casting machine and control method

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Embodiment 1

[0028] Such as figure 1 , 2 As shown, this embodiment provides a slab continuous casting machine segment cooling device, which is applied to the last segment in the continuous casting machine. This embodiment is suitable for the value of the width W between 1000mm-3000mm, and the thickness The value of D is between 100mm-600mm, and the value of the pulling speed v of the slab 1 is between 0.4-4.0m / min. The surface of the slab 1 is forced to cool down, so that the surface temperature of the slab 1 is from 800 ° C. -900°C quickly cools down to 200°C-500°C, and then uses the temperature inside the slab 1 to return to the temperature. When entering the heating furnace, the surface temperature of the slab 1 returns to 500°C-800°C.

[0029] It should be noted that during the drawing process, the slab 1 needs to be shaped by ordinary cooling, and the slab 1 after ordinary cooling is directly sent to heat, although fuel consumption can be reduced, but in this case, If the furnace is...

Embodiment 2

[0051] Such as figure 1 , 2 As shown in , 3, this embodiment provides a control method for a slab continuous casting machine segment, which is applied to the cooling device for a slab 1 continuous casting machine segment described in any one of Embodiment 1, and the method includes :

[0052] Step S101: controlling the amount of water sprayed by the nozzle of the nozzle bar 3 toward the upper surface of the slab 1 to be 100L / min-2000L / min;

[0053] Specifically, the amount of water sprayed toward the upper surface of the slab 1 by the nozzles of the nozzle bars 3 placed on both sides of the upper conveying roller 2 is controlled to be 100L / min-2000L / min.

[0054] Step S102: Controlling the amount of water sprayed by the nozzle of the nozzle bar 3 toward the lower surface of the slab 1 to be 1000L / min-20000L / min.

[0055] Specifically, the amount of water sprayed toward the lower surface of the slab 1 by the nozzles of the nozzle bars 3 placed on both sides of the lower conv...

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Abstract

The invention discloses a fan-shaped section cooling device of a slab continuous casting machine and a control method. The fan-shaped section cooling device is applied to the last fan-shaped section in the continuous casting machine. The cooling device comprises a rack, and a plurality of sets of upper conveying rollers and lower conveying rollers which are matched with each other are uniformly distributed at intervals in the running direction of a slab. The positions, located on the two sides of each set of upper conveying rollers and lower conveying rollers, of the rack are each provided with a row of nozzle rod pieces, and each row of nozzle rod pieces comprises a plurality of nozzle rod pieces distributed at intervals. Nozzles of the nozzle rod pieces are used for spraying cooling water columns to the upper surface and the lower surface of the slab, and the cooling water columns are fan-shaped surfaces with preset angles. In each row of nozzle rod pieces, the fan-shaped faces of the cooling water columns formed by spraying of every two adjacent nozzle rod pieces are overlapped. The cooling device can evenly cool the upper surface and the lower surface of the slab, then the slabis forcibly cooled, and meanwhile the burning loss of the slab and the consumption of steel and iron materials can be reduced.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a fan section cooling device and control method of a slab continuous casting machine. Background technique [0002] Slab hot charging refers to the production organization method that uses the waste heat of the slab to reduce the heating time in the hot rolling furnace. It has the advantages of reducing the fuel consumption of the heating furnace, saving costs, reducing the burning loss of the slab and reducing the consumption of steel materials. It is the embodiment of a high level of enterprise management. [0003] However, the applicant found that warm delivery (450°C-550°C) or cold delivery of the slab is not conducive to reducing the fuel consumption of the heating furnace and saving costs, and the slab that has undergone ordinary cooling but not forced cooling is directly loaded into the When heating the furnace, the steel plate obtained by later rolling is prone to ...

Claims

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Application Information

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IPC IPC(8): B22D11/124B22D11/22
CPCB22D11/124B22D11/1246B22D11/225
Inventor 刘洋朱志远赵新宇甄新刚赵晶王玉龙王海宝吕延春胡显堂王臻明蒯多圣谢翠红
Owner SHOUGANG CORPORATION