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Control method of cracks of special steel cast blank

A control method and special steel technology, applied in flow control, non-electric variable control, control/regulation system, etc., can solve problems such as easy cracks on the surface of casting slabs, and achieve the effect that cracks are not easy to appear

Inactive Publication Date: 2019-12-13
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application solves the technical problem in the prior art that cracks are prone to occur on the surface of the slab during the production of special peritectic steel in the continuous casting process by providing a method for controlling the cracks of the special steel slab, and realizes the In the process of producing special peritectic steel grades in the continuous casting process, the technical effect that cracks are not easy to appear on the surface of the slab

Method used

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  • Control method of cracks of special steel cast blank
  • Control method of cracks of special steel cast blank
  • Control method of cracks of special steel cast blank

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Effect test

Embodiment 1

[0059] Such as figure 1 As shown, the present embodiment provides a method for controlling cracks in a special steel slab, including:

[0060] Step S101: Before pouring molten steel into the mold, control the ratio of water volume on the wide and narrow sides of the mold within the range of 7.0 to 7.7, wherein the ratio of water volume on the wide and narrow sides refers to the ratio of the water volume on the wide side to the water volume on the narrow side, and the ratio of the water volume on the wide side to the narrow side The water flow is controlled at 3200L / min to 3400L / min, and the water flow at the narrow surface is controlled at 440L / min to 460L / min.

[0061] In the specific implementation process, step S101 is an improvement on the control technology of the first cooling of the continuous casting machine (that is, the cooling water in the crystallizer).

[0062] In the specific implementation process, the special steel refers to peritectic steel containing Cu (cop...

Embodiment 2

[0092] Based on the same inventive concept, this embodiment provides a control device for cracks in a special steel slab, which is used to automatically realize the control method for cracks in a special steel slab in the first embodiment above by adopting automatic control technology, thereby improving the control accuracy. Improve control efficiency and reduce the workload of workers on site.

[0093] Such as figure 2 As shown, the special steel slab crack control device 200 provided in this embodiment includes:

[0094] The first control module 201 is used to control the water volume ratio of the wide and narrow surfaces of the mold within the range of 7.0 to 7.7 before pouring molten steel into the mold, wherein the water volume ratio of the wide and narrow surfaces refers to the water volume of the wide surface and the water volume of the narrow surface. The ratio of the water volume of the surface, and the water flow rate of the wide surface is controlled at 3200L / min~...

Embodiment 3

[0106] Based on the same inventive concept, this embodiment provides an industrial control computer, which is used to automatically implement the control method for the cracks of the special steel slab in the above-mentioned embodiment 1 by adopting the automatic control technology, thereby improving the control accuracy, improving the control efficiency, and Reduce the workload of workers on site.

[0107] Such as image 3 As shown, the industrial control computer 300 provided in this embodiment includes: a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and operable on the processor 320. When the processor 320 executes the computer program 311, the following step:

[0108] Before pouring molten steel into the crystallizer, the water volume ratio of the wide and narrow surfaces of the mold is controlled within the range of 7.0 to 7.7, wherein the water volume ratio of the wide and narrow surfaces refers to the ratio of the water volume of the...

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Abstract

The invention discloses a control method of cracks of a special steel cast blank. The method comprises the steps that before molten steel is poured into a crystallizer, the wide and narrow face wateramount proportion of the crystallizer is controlled within 7.0-7.7, the wide and narrow face water amount proportion is the proportion of the wide face water amount and the narrow face water amount, the wide face water flow is controlled to be 3200 L / min-3400 L / min, and the narrow face water amount is controlled to be 440 L / min-460 L / min; the proportion water amount of cooling water of a fan-shaped section is controlled to be 0.85 L / kg-0.95 L / kg, and the proportion water amount is the proportion of the cooling water and the molten steel needing to be filled. According to the control method, inthe special peritectic steel type production process of the continuous casting working procedure, the technical effect that the cracks do not occur easily on the surface of the cast blank is achieved. Meanwhile, the invention further discloses a control device of the cranks of the special steel blank, an industrial control computer and a computer readable storage medium.

Description

technical field [0001] The invention relates to the technical field of slab continuous casting, in particular to a method for controlling cracks in a special steel casting slab. Background technique [0002] In the process of producing special peritectic steel (including Cu, Ni, Cr) by continuous casting process, due to the high alloy content and peritectic steel, a large number of cracks are prone to occur on the surface of the slab, and the deepest crack can reach 7mm deep. There is a risk of secondary cleaning of the slab or judgment of scrap, which may lead to steel breakout accidents in severe cases. [0003] Therefore, there is an urgent need to develop a crack control method for special steel slabs so as to avoid massive cracks in slabs during the subsequent production of special steel types. Contents of the invention [0004] The embodiment of the present application solves the technical problem in the prior art that cracks are easily generated on the surface of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18B22D11/16G05D7/06
CPCB22D11/168B22D11/18G05D7/0617
Inventor 李志军毕泽阳郝丽霞朱克然刘建斌俞学成张远芬杨晓艳
Owner BEIJING SHOUGANG CO LTD
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