CN110102731B - Method for reducing residual molten steel amount in ladle casting - Google Patents
Method for reducing residual molten steel amount in ladle casting Download PDFInfo
- Publication number
- CN110102731B CN110102731B CN201910397135.9A CN201910397135A CN110102731B CN 110102731 B CN110102731 B CN 110102731B CN 201910397135 A CN201910397135 A CN 201910397135A CN 110102731 B CN110102731 B CN 110102731B
- Authority
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- China
- Prior art keywords
- ladle
- casting
- steel
- hydraulic cylinder
- molten steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 238000005266 casting Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009749 continuous casting Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/183—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring molten metal weight
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a method for reducing the residual molten steel amount in ladle casting, which comprises the following steps: 1) four corners of the bottom of the ladle weighing platform are respectively provided with a lifting hydraulic cylinder; 2) in the later stage of steel ladle casting, when the amount of the residual molten steel in the steel ladle is less than 15t, starting a lifting hydraulic cylinder, confirming that the molten steel in the steel ladle does not flocculate and a casting area does not have a crusting phenomenon before starting; make the ladle can incline to the mouth of a river direction through hydraulic cylinder's cooperation action, adopt different inclination according to the ladle casting number of times: 3) and after the steel ladle stops casting and the sliding plate is closed, the lifting hydraulic cylinder is restarted to enable the steel ladle to return to the original position. According to the invention, the lifting hydraulic cylinder is arranged at the bottom of the ladle weighing platform, so that the ladle has an inclination function, and the inclination angle is determined according to the casting times of the ladle, thereby effectively reducing the residual molten steel amount in the ladle casting and reducing the production cost.
Description
Technical Field
The invention relates to the technical field of molten steel continuous casting, in particular to a method for reducing the residual molten steel amount in ladle casting.
Background
The ladle turret is the most common equipment for carrying and supporting a ladle to pour in modern continuous casting, plays important roles of spanning, continuous casting and the like, and can enable a ladle nozzle to be positioned at a specified position above a tundish during steel pouring by the designed rotating radius of the ladle. When the molten steel is cast, a steel ladle is placed on a steel ladle rotary table by a crane on one side of a molten steel receiving bay, and the steel ladle is stopped above a tundish to supply the molten steel through the rotary action of the steel ladle rotary table. And the poured empty ladle rotates through the ladle turret and then is transported back to the molten steel receiving bay.
The ladle is usually placed on a ladle weighing platform on a ladle turret, the ladle turret has no inclination function and is influenced by the corrosion of a refractory material at the bottom of the ladle, a pit appears in the central position of the bottom of the ladle after the ladle is cast for several times, and the pit is larger in area and depth when the casting times are more, so that residual molten steel is easy to remain in the ladle after the casting is finished due to the existence of the pit; how to pour the molten steel as far as possible under the premise of ensuring that slag is not dropped in the casting process has great significance for improving the qualified billet quantity and reducing the production cost.
Disclosure of Invention
The invention provides a method for reducing the residual molten steel amount in ladle casting, which is characterized in that a lifting hydraulic cylinder is arranged at the bottom of a ladle weighing platform to enable a ladle to have an inclination function, and the inclination angle is determined according to the casting times of the ladle, so that the residual molten steel amount in ladle casting is effectively reduced, and the production cost is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for reducing the residual molten steel amount in ladle casting comprises the following steps:
1) a ladle weighing platform is arranged on the ladle turret, and four corners of the bottom of the ladle weighing platform are respectively provided with a lifting hydraulic cylinder;
2) in the later stage of steel ladle casting, when the amount of the residual molten steel in the steel ladle is less than 15t, starting a lifting hydraulic cylinder, confirming that the molten steel in the steel ladle does not flocculate and a casting area does not have a crusting phenomenon before starting; make the ladle can incline to the mouth of a river direction through hydraulic cylinder's cooperation action, adopt different inclination according to the ladle casting number of times:
the number of times of ladle casting is 1-10, and the inclination angle is 5.5-7.9 degrees;
the number of times of steel ladle casting is 11-20, and the inclination angle is 8-9.5 degrees;
the steel ladle casting times are more than 20, and the inclination angle is 3-5 degrees;
3) and after the steel ladle stops casting and the sliding plate is closed, the lifting hydraulic cylinder is restarted to enable the steel ladle to return to the original position.
Compared with the prior art, the invention has the beneficial effects that:
the lifting hydraulic cylinder is arranged at the bottom of the ladle weighing platform, so that the ladle has an inclination function, and the inclination angle is determined according to the casting times of the ladle, so that the residual molten steel amount in the ladle casting is effectively reduced, and the production cost is reduced.
Detailed Description
The invention relates to a method for reducing the residual molten steel amount in ladle casting, which comprises the following steps:
1) a ladle weighing platform is arranged on the ladle turret, and four corners of the bottom of the ladle weighing platform are respectively provided with a lifting hydraulic cylinder;
2) in the later stage of steel ladle casting, when the amount of the residual molten steel in the steel ladle is less than 15t, starting a lifting hydraulic cylinder, confirming that the molten steel in the steel ladle does not flocculate and a casting area does not have a crusting phenomenon before starting; make the ladle can incline to the mouth of a river direction through hydraulic cylinder's cooperation action, adopt different inclination according to the ladle casting number of times:
the number of times of ladle casting is 1-10, and the inclination angle is 5.5-7.9 degrees;
the number of times of steel ladle casting is 11-20, and the inclination angle is 8-9.5 degrees;
the steel ladle casting times are more than 20, and the inclination angle is 3-5 degrees;
3) and after the steel ladle stops casting and the sliding plate is closed, the lifting hydraulic cylinder is restarted to enable the steel ladle to return to the original position.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ examples ] A method for producing a compound
In this embodiment, the method for reducing the amount of residual molten steel in ladle casting specifically includes:
2 ladle weighing platforms are arranged on the ladle turret and are respectively used for placing 2 ladles; and (3) respectively installing lifting hydraulic cylinders at four corners of the bottom of each ladle weighing platform, and installing 8 lifting hydraulic cylinders in total.
After the lifting hydraulic cylinder is installed, the operating button is installed on an operating box in the ladle operating chamber, and manual operation can be performed manually. The ladle can be inclined towards the direction of the water gap through the matching action of the lifting hydraulic cylinder, and the maximum inclination angle is 10 degrees.
And after the function of the equipment is debugged normally, the lifting hydraulic cylinder is connected with the control system and is automatically controlled by the control system, and when the residual molten steel in the steel ladle at the last stage of steel ladle casting is less than 15t, the steel ladle inclination function is automatically started. Before the tilting function is started, the molten steel in the ladle is ensured not to flocculate and the casting area is free from incrustation.
Different inclination angles are adopted according to the times of ladle casting:
the number of times of ladle casting is 1-10, and the inclination angle is 5.5-7.9 degrees;
the number of times of steel ladle casting is 11-20, and the inclination angle is 8-9.5 degrees;
the steel ladle casting times are more than 20, and the inclination angle is 3-5 degrees;
after the ladle stops pouring and the sliding plate is closed, the lifting hydraulic cylinder is started to enable the ladle to return to the original position, when the inclination angle of the ladle is 0 degree, long nozzle unloading operation can be carried out, and the ladle rotary table can rotate.
After the method is implemented, 1t of steel can be saved on average for each ladle by using three casting machines to cast 60 pots of molten steel on average per day, and the cost of each ton of steel is calculated according to 0.2 ten thousand yuan, so that 365 multiplied by 60 multiplied by 0.2 is saved by 4380 ten thousand yuan each year.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. The method for reducing the residual molten steel amount in ladle casting is characterized by comprising the following steps of:
1) a ladle weighing platform is arranged on the ladle turret, and four corners of the bottom of the ladle weighing platform are respectively provided with a lifting hydraulic cylinder;
2) in the later stage of steel ladle casting, when the amount of the residual molten steel in the steel ladle is less than 15t, starting a lifting hydraulic cylinder, confirming that the molten steel in the steel ladle does not flocculate and a casting area does not have a crusting phenomenon before starting; make the ladle can incline to the mouth of a river direction through hydraulic cylinder's cooperation action, adopt different inclination according to the ladle casting number of times:
the number of times of ladle casting is 1-10, and the inclination angle is 5.5-7.9 degrees;
the number of times of steel ladle casting is 11-20, and the inclination angle is 8-9.5 degrees;
the steel ladle casting times are more than 20, and the inclination angle is 3-5 degrees;
3) and after the steel ladle stops casting and the sliding plate is closed, the lifting hydraulic cylinder is restarted to enable the steel ladle to return to the original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397135.9A CN110102731B (en) | 2019-05-14 | 2019-05-14 | Method for reducing residual molten steel amount in ladle casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397135.9A CN110102731B (en) | 2019-05-14 | 2019-05-14 | Method for reducing residual molten steel amount in ladle casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110102731A CN110102731A (en) | 2019-08-09 |
| CN110102731B true CN110102731B (en) | 2021-02-23 |
Family
ID=67489851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910397135.9A Active CN110102731B (en) | 2019-05-14 | 2019-05-14 | Method for reducing residual molten steel amount in ladle casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110102731B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879616A (en) * | 1996-01-22 | 1999-03-09 | Harbison-Walker Refractories Company | Metallurgical vessel and method of using the same |
| CN201702360U (en) * | 2010-07-02 | 2011-01-12 | 武汉钢铁(集团)公司 | Steel ladle with slope-shaped ladle bottom |
| CN201807729U (en) * | 2010-09-26 | 2011-04-27 | 舞阳钢铁有限责任公司 | Continuous casting tundish for reducing steel remaining quantity |
| CN203197232U (en) * | 2013-04-28 | 2013-09-18 | 浙江自立股份有限公司 | Steel ladle bottom structure capable of effectively reducing amount of residual molten steel of steel ladle |
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2019
- 2019-05-14 CN CN201910397135.9A patent/CN110102731B/en active Active
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| Publication number | Publication date |
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| CN110102731A (en) | 2019-08-09 |
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