CN113000805A - Production method for increasing continuous casting furnace number of billet continuous casting machine - Google Patents
Production method for increasing continuous casting furnace number of billet continuous casting machine Download PDFInfo
- Publication number
- CN113000805A CN113000805A CN202110202733.3A CN202110202733A CN113000805A CN 113000805 A CN113000805 A CN 113000805A CN 202110202733 A CN202110202733 A CN 202110202733A CN 113000805 A CN113000805 A CN 113000805A
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- CN
- China
- Prior art keywords
- continuous casting
- tundish
- increasing
- billet
- furnaces
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
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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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Abstract
The invention discloses a production method for increasing the number of continuous casting furnaces of a billet continuous casting machine, which comprises the following steps: the capacity of the tundish is not less than 22 tons; the thickness of the working layer of the middle ladle is 75-80 mm; the preheating time was 30 minutes. The invention aims to provide a production method for increasing the number of continuous casting furnaces of a billet continuous casting machine, so as to increase the number of continuous casting furnaces and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of smelting, in particular to a method for improving the cross section by 150 multiplied by 150mm2A method for producing continuous casting furnaces of a billet caster.
Background
At present, the capacity of the domestic steel industry is surplus, the cost is reduced to become a competitive advantage of steel enterprises, and the small square billet casting machine of the steel-clad steel plant is imperative, mainly takes the production of steel for building materials, and takes an important task of reducing the cost of a production line of the steel-clad steel plant. By carrying out production line alignment with other steel enterprises, the service life of a tundish in a small square billet casting machine of 150mm2 of the same level steel works at home is found to be 50 hours/casting time, the service life of the tundish in the small square billet casting machine of the steel-making ladle plant is only 24 hours/casting time, and a great difference exists between the service life and the casting time, so that a great promotion space is provided. The continuous casting time of the tundish is prolonged, the number of continuous casting furnaces of the tundish can be increased, the times of quick change of the tundish are reduced, the yield is improved, the consumption of steel materials, energy media and cost of per ton of steel refractory materials can be reduced, and the use benefit of the tundish is maximized.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a production method for increasing the number of continuous casting furnaces of a billet continuous casting machine so as to increase the number of continuous casting furnaces and improve the production efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a production method for increasing the number of continuous casting furnaces of a billet continuous casting machine comprises the following steps:
the capacity of the tundish is not less than 22 tons;
the thickness of the tundish working layer (the thickness of the tundish) is 75-80 mm;
the preheating time was 30 minutes.
Further, the medium fire baking time is increased from 2 hours to 40 minutes to 3 hours, and the time is increased by 20 minutes.
Further, the thickness of the working layer of the middle ladle is 80 mm.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention can improve the number of continuous casting furnaces, is beneficial to improving the production efficiency, reducing the times of quick changing the tundish, reducing the accident rate of casting and quick changing, greatly reduces the labor intensity of workers, releases the productivity of the casting machine and reduces the production cost. Through the modification, the number of the tundish single-ladle continuous casting furnaces is obviously increased from 20.7 furnaces/casting times to 30.8 furnaces/casting times.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a comparison of the number of continuous casting furnaces for a single tundish.
Detailed Description
On the premise of stable production, the invention finds that the tundish capacity is required to be ensured to be not less than 22 tons, and if the working layer is too thick, the production stability is inevitably influenced. Meanwhile, the thickness of the working layer is increased from 50mm to 80mm, so that the technical standard is met, and the production stability is not influenced. Because the thickness of the working layer of the tundish is increased, the baking system of the tundish is re-optimized, the preheating time is increased from the original 20 minutes to 30 minutes, and meanwhile, the baking time of the tundish is increased from 2 hours and 40 minutes to 3 hours and is increased by 20 minutes. After optimization, compared with the prior art, the corresponding relation between the thickness of the working layer and the using time of the tundish is calculated, and the table 1 shows.
TABLE 1 correspondence between working layer thickness and tundish service time
In the invention, 10 used middle packages are tracked in the test, the erosion degree of the working layer of the middle package is 41.2mm-44.7mm and is within a safety value; erosion at the slag line of the stopper rod is less than 20 mm; the retaining wall is safe, and the safe service life of the working layer of the tundish is matched with that of the stopper and the retaining wall, as shown in table 2. The invention finds that the erosion of the stopper rod reaches a critical value when the tundish is used for 36 hours, and then the invention concludes that: on the premise of meeting the technical standard, the tundish using benefit is the largest when the tundish of the small square billet casting machine is used for 36 hours.
TABLE 2 corresponding relationship between the packet service time and the erosion thickness of the working layer and the stopper rod
By the method, the number of continuous casting furnaces is increased, the production efficiency is improved, the times of quick changing the tundish are reduced, the casting starting and quick changing accident rate is reduced, the labor intensity of workers is greatly reduced, the capacity of the casting machine is released, and the production cost is reduced. Through the modification, the number of the tundish single-ladle continuous casting furnaces is obviously increased from the original 20.7 furnaces/casting times to 30.8 furnaces/casting times (as shown in figure 1). The times of quickly replacing the tundish and the number of used tundish in one year are obviously reduced, which means that the consumption of energy and medium per ton of steel is reduced, the consumption of steel materials is reduced, the cost of resistant materials per ton of steel is reduced, and the total cost is saved by about 484 ten thousand yuan per year.
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 (4)
1. A production method for increasing the number of continuous casting furnaces of a billet continuous casting machine is characterized by comprising the following steps:
the capacity of the tundish is not less than 22 tons;
the thickness of the working layer of the middle ladle is 75-80 mm;
the preheating time was 30 minutes.
2. The method for increasing the number of continuous casting furnaces of a billet caster according to claim 1, characterized in that the medium-heat baking time is increased from 2 hours and 40 minutes to 3 hours.
3. The production method for increasing the number of continuous casting furnaces of a billet continuous casting machine according to claim 1, wherein the thickness of the working layer of the tundish is 80 mm.
4. The method for increasing the number of continuous casting furnaces of a billet caster according to claim 1, characterized in that the use of a continuous casting furnace with a cross section of 150 x 150mm2A billet caster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202733.3A CN113000805A (en) | 2021-02-23 | 2021-02-23 | Production method for increasing continuous casting furnace number of billet continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202733.3A CN113000805A (en) | 2021-02-23 | 2021-02-23 | Production method for increasing continuous casting furnace number of billet continuous casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113000805A true CN113000805A (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110202733.3A Pending CN113000805A (en) | 2021-02-23 | 2021-02-23 | Production method for increasing continuous casting furnace number of billet continuous casting machine |
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| CN (1) | CN113000805A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000084645A (en) * | 1998-09-11 | 2000-03-28 | Nippon Steel Corp | Method for continuous use of tundish |
| CN202984652U (en) * | 2012-12-25 | 2013-06-12 | 东海县盛昌石英材料有限公司 | Continuous casting tundish |
| CN203917892U (en) * | 2014-05-09 | 2014-11-05 | 武汉钢铁(集团)公司 | Long-life tundish |
| CN204504207U (en) * | 2015-03-16 | 2015-07-29 | 山东钢铁股份有限公司 | A kind of slab CC tundish working lining |
| CN106825531A (en) * | 2017-01-18 | 2017-06-13 | 武汉精鼎科技股份有限公司 | A kind of construction method of steel mill molten steel direct casting tundish |
| CN206425544U (en) * | 2016-10-19 | 2017-08-22 | 北京利尔高温材料股份有限公司 | A kind of tundish for being used to pour steel |
| CN110064741A (en) * | 2019-06-10 | 2019-07-30 | 成渝钒钛科技有限公司 | Continuous cast crystallizer number lift technique in steel-making continuous casting |
| CN110860681A (en) * | 2019-10-31 | 2020-03-06 | 张家港宏昌钢板有限公司 | Continuous casting coating tundish spraying method |
| CN211915486U (en) * | 2020-03-04 | 2020-11-13 | 中天钢铁集团有限公司 | Continuous casting tundish capable of improving purity of molten steel |
-
2021
- 2021-02-23 CN CN202110202733.3A patent/CN113000805A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000084645A (en) * | 1998-09-11 | 2000-03-28 | Nippon Steel Corp | Method for continuous use of tundish |
| CN202984652U (en) * | 2012-12-25 | 2013-06-12 | 东海县盛昌石英材料有限公司 | Continuous casting tundish |
| CN203917892U (en) * | 2014-05-09 | 2014-11-05 | 武汉钢铁(集团)公司 | Long-life tundish |
| CN204504207U (en) * | 2015-03-16 | 2015-07-29 | 山东钢铁股份有限公司 | A kind of slab CC tundish working lining |
| CN206425544U (en) * | 2016-10-19 | 2017-08-22 | 北京利尔高温材料股份有限公司 | A kind of tundish for being used to pour steel |
| CN106825531A (en) * | 2017-01-18 | 2017-06-13 | 武汉精鼎科技股份有限公司 | A kind of construction method of steel mill molten steel direct casting tundish |
| CN110064741A (en) * | 2019-06-10 | 2019-07-30 | 成渝钒钛科技有限公司 | Continuous cast crystallizer number lift technique in steel-making continuous casting |
| CN110860681A (en) * | 2019-10-31 | 2020-03-06 | 张家港宏昌钢板有限公司 | Continuous casting coating tundish spraying method |
| CN211915486U (en) * | 2020-03-04 | 2020-11-13 | 中天钢铁集团有限公司 | Continuous casting tundish capable of improving purity of molten steel |
Non-Patent Citations (1)
| Title |
|---|
| 李永力等: "中间包耐火材料结构优化改进与实践", 《耐火材料》 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |
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| RJ01 | Rejection of invention patent application after publication |