CN113828749A - Method for realizing continuous casting castability of rare earth steel by adjusting superheat degree - Google Patents
Method for realizing continuous casting castability of rare earth steel by adjusting superheat degree Download PDFInfo
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- CN113828749A CN113828749A CN202110930389.XA CN202110930389A CN113828749A CN 113828749 A CN113828749 A CN 113828749A CN 202110930389 A CN202110930389 A CN 202110930389A CN 113828749 A CN113828749 A CN 113828749A
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- Prior art keywords
- rare earth
- steel
- continuous casting
- superheat degree
- earth steel
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 76
- 239000010959 steel Substances 0.000 title claims abstract description 76
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 59
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 59
- 238000009749 continuous casting Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims abstract description 4
- 230000016615 flocculation Effects 0.000 claims description 17
- 238000005189 flocculation Methods 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 14
- 238000009776 industrial production Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a method for realizing continuous casting castability of rare earth steel by adjusting superheat degree, which comprises the following steps: the superheat degree is properly improved, the temperature of the molten rare earth steel contacting a water gap is increased, and the adsorption of the educt of the molten rare earth steel on the water gap is reduced or eliminated, so that the castability is improved. The method can effectively solve the problem of large-scale continuous casting of rare earth steel floc steel.
Description
Technical Field
The invention relates to a method for realizing continuous casting castability of rare earth steel by adjusting superheat degree.
Background
The castability of the rare earth steel is a worldwide problem, how to pour the rare earth steel on a large scale is an obstacle to the industrial application of the rare earth steel, and the realization of multi-furnace continuous castability is always a key point for research of rare earth steel researchers. Casting rare earth steel is mainly a steel flocculation problem.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for realizing continuous casting castability of rare earth steel by adjusting superheat degree.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a method for realizing continuous casting castability of rare earth steel by adjusting superheat degree, which comprises the following steps: the superheat degree is properly improved, the temperature of the molten rare earth steel contacting a water gap is increased, and the adsorption of the educt of the molten rare earth steel on the water gap is reduced or eliminated, so that the castability is improved.
Further, the superheat degree is improved to be within the control range of 35-40 ℃, so that the nozzle flocculation steel is inhibited.
Further, the amount of the casting rare earth added was 150 ppm.
Compared with the prior art, the invention has the beneficial technical effects that:
the method can effectively solve the problem of large-scale continuous casting of rare earth steel floc steel. Mainly reduces the steel flocculation property of a water gap and improves the castability of rare earth steel by improving the superheat degree of molten steel.
Detailed Description
A method for realizing continuous casting castability of rare earth steel by adjusting superheat degree comprises the following steps: the superheat degree is properly improved, the temperature of the molten rare earth steel contacting a water gap is increased, and the adsorption of the educt of the molten rare earth steel on the water gap is reduced or eliminated, so that the castability is improved.
Wherein: the superheat degree is improved to be within the control range of 35-40 ℃, so that the nozzle steel flocculation is inhibited. The addition of casting rare earth is 150 ppm.
Example 1
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of not containing the rare earth steel, and the superheat degree is increased to 35 ℃ when the addition of the cast rare earth is 150ppm, so that the nozzle flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is avoided, and the industrial production of the rare earth steel is realized.
Example 2
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of no rare earth steel, and the superheat degree is increased to 36 ℃ when the addition of casting rare earth is 150ppm, so that the nozzle flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is avoided, and the industrial production of the rare earth steel is realized.
Example 3
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of no rare earth steel, and the superheat degree is increased to 37 ℃ when the addition of casting rare earth is 150ppm, so that the nozzle flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is avoided, and the industrial production of the rare earth steel is realized.
Example 4
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of no rare earth steel, and the superheat degree is increased to 38 ℃ when the addition of casting rare earth is 150ppm, so that the nozzle flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is avoided, and the industrial production of the rare earth steel is realized.
Example 5
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of not containing the rare earth steel, and the superheat degree is increased to 39 ℃ when the addition of the cast rare earth is 150ppm, so that the water gap flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is not generated, and the industrial production of the rare earth steel is realized.
Example 6
The casting machine of a certain steel plant is a 2150 x 230mm double-flow straight arc slab continuous casting machine, rare earth steel is continuously cast, the addition of the rare earth steel is more than or equal to 100ppm, the superheat degree is controlled within the range of less than or equal to 30 ℃ under the condition of no rare earth steel, and the superheat degree is increased to 40 ℃ when the addition of casting rare earth is 150ppm, so that the nozzle flocculation steel is inhibited, the continuous casting of more than or equal to 6 furnaces is realized, the flocculation steel interruption is avoided, and the industrial production of the rare earth steel is realized.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (3)
1. A method for realizing continuous casting castability of rare earth steel by adjusting superheat degree is characterized by comprising the following steps: the method comprises the following steps: the superheat degree is properly improved, the temperature of the molten rare earth steel contacting a water gap is increased, and the adsorption of the educt of the molten rare earth steel on the water gap is reduced or eliminated, so that the castability is improved.
2. The method for realizing the continuous casting castability of the rare earth steel by adjusting the degree of superheat as claimed in claim 1, wherein: the superheat degree is improved to be within the control range of 35-40 ℃, so that the nozzle steel flocculation is inhibited.
3. The method for realizing the continuous casting castability of the rare earth steel by adjusting the degree of superheat as claimed in claim 2, wherein: the addition of casting rare earth is 150 ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930389.XA CN113828749A (en) | 2021-08-13 | 2021-08-13 | Method for realizing continuous casting castability of rare earth steel by adjusting superheat degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930389.XA CN113828749A (en) | 2021-08-13 | 2021-08-13 | Method for realizing continuous casting castability of rare earth steel by adjusting superheat degree |
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| CN113828749A true CN113828749A (en) | 2021-12-24 |
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| CN202110930389.XA Pending CN113828749A (en) | 2021-08-13 | 2021-08-13 | Method for realizing continuous casting castability of rare earth steel by adjusting superheat degree |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014046315A (en) * | 2012-08-29 | 2014-03-17 | Nippon Steel & Sumitomo Metal | Method for continuous casting of steel containing rare earth metal |
| CN110172543A (en) * | 2019-05-23 | 2019-08-27 | 包头钢铁（集团）有限责任公司 | A kind of method that Rare Earth Treated Steel prevents wadding steel in casting process |
| CN110438389A (en) * | 2019-09-16 | 2019-11-12 | 内蒙古工业大学 | A kind of high-purity rare earth steel production method |
| CN110484811A (en) * | 2019-09-10 | 2019-11-22 | 中国科学院金属研究所 | A kind of ultra-clean rare earth steel and inclusion conditioning control method |
| CN111545717A (en) * | 2020-06-30 | 2020-08-18 | 新余钢铁股份有限公司 | Pouring method of rare earth steel |
| CN112226578A (en) * | 2020-09-15 | 2021-01-15 | 包头钢铁（集团）有限责任公司 | Rare earth addition control method for high-strength rare earth girder steel |
-
2021
- 2021-08-13 CN CN202110930389.XA patent/CN113828749A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014046315A (en) * | 2012-08-29 | 2014-03-17 | Nippon Steel & Sumitomo Metal | Method for continuous casting of steel containing rare earth metal |
| CN110172543A (en) * | 2019-05-23 | 2019-08-27 | 包头钢铁（集团）有限责任公司 | A kind of method that Rare Earth Treated Steel prevents wadding steel in casting process |
| CN110484811A (en) * | 2019-09-10 | 2019-11-22 | 中国科学院金属研究所 | A kind of ultra-clean rare earth steel and inclusion conditioning control method |
| CN110438389A (en) * | 2019-09-16 | 2019-11-12 | 内蒙古工业大学 | A kind of high-purity rare earth steel production method |
| CN111545717A (en) * | 2020-06-30 | 2020-08-18 | 新余钢铁股份有限公司 | Pouring method of rare earth steel |
| CN112226578A (en) * | 2020-09-15 | 2021-01-15 | 包头钢铁（集团）有限责任公司 | Rare earth addition control method for high-strength rare earth girder steel |
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Application publication date: 20211224 |
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| RJ01 | Rejection of invention patent application after publication |