CN220591513U - Water cooling device for head and tail uniform temperature of continuous casting billet - Google Patents
Water cooling device for head and tail uniform temperature of continuous casting billet Download PDFInfo
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- CN220591513U CN220591513U CN202320878501.4U CN202320878501U CN220591513U CN 220591513 U CN220591513 U CN 220591513U CN 202320878501 U CN202320878501 U CN 202320878501U CN 220591513 U CN220591513 U CN 220591513U
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- 238000001816 cooling Methods 0.000 title claims abstract description 109
- 238000009749 continuous casting Methods 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005507 spraying Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 15
- 238000005096 rolling process Methods 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 208000029154 Narrow face Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The utility model belongs to the field of continuous casting blank temperature control in the metallurgical industry, and particularly relates to a water cooling device for head and tail temperature equalization of a continuous casting blank. The utility model comprises a plurality of annular cooling headers which are coaxially arranged, wherein the annular cooling headers are connected with a water inlet pipe, and a plurality of nozzles are arranged on the inner side of the annular cooling headers. When the continuous casting billet sequentially passes through the inside of the annular cooling headers, the annular cooling headers spray water to the continuous casting billet for cooling through the nozzles, and the uniformity of the head and tail temperatures of the continuous casting billet is ensured by controlling the water spraying start-stop time and the water spraying flow of the nozzles of each annular cooling header. And in the cooling process, the continuous casting billet is kept to be transported forwards without being deliberately parked, so that the production efficiency is ensured.
Description
Technical Field
The utility model belongs to the field of continuous casting blank temperature control in the metallurgical industry, and particularly relates to a water cooling device for head and tail temperature equalization of a continuous casting blank.
Background
The traditional continuous casting-heating-rolling production process generally cools a high-temperature casting blank from a continuous casting machine, then enters a heating furnace, is heated to meet the requirement of the initial rolling temperature, and then rolls, and a large amount of physical heat of the casting blank is wasted in the cooling and reheating process. In order to reduce energy consumption and environmental pollution, metallurgical enterprises develop a heating-free direct rolling technology and are put into application in iron and steel enterprises in many places nationwide, and the method is mainly used for producing small square billets, bars and wires at present. Compared with the traditional continuous casting-heating-rolling production process, the direct rolling process completely omits the energy consumption of a heating furnace, so that the direct rolling process can reduce the energy consumption, reduce the production cost and achieve the aim of obviously saving energy and reducing emission.
However, the direct rolling process does not have the function of uniform temperature of the heating furnace, so that the temperature of the head part of the fixed-length casting blank is lower than that of the tail part. The temperature difference between the head and the tail of a casting blank is 60-120 ℃ generally, so that the product performance of the rolled casting blank is unstable. Taking a screw-thread steel bar as an example, the fluctuation of the mechanical property can exceed 100MPa at maximum, and the fluctuation range of the mechanical property of the steel bar produced by the traditional heating furnace is smaller than 30MPa, so that the head-tail temperature difference before rolling the continuous casting billet seriously influences the stability of the structure and the performance of the steel product, reduces the quality of the product and restricts the development of continuous casting and direct rolling process technology.
In the prior art, the residence time and the head-tail time interval of the casting blank in the heat preservation cover are controlled mainly by increasing the length of the heat preservation cover or changing the pulling speed of the casting blank, so that the uniform control of the temperature of different parts of the whole continuous casting blank is realized. The mode increases equipment investment and operation and maintenance difficulty, and in addition, the pulling speed of the casting blank is changed, so that the casting blank conveying speed is required to be controlled in a segmented mode, the casting blank conveying speed is influenced, and production efficiency is not improved.
Disclosure of Invention
The utility model aims to overcome the defects and provide a water cooling device for head and tail temperature equalization of continuous casting billets, which ensures the uniformity of the head and tail temperatures of the continuous casting billets by controlling the water spraying amount and the water spraying time of a nozzle, ensures that the conveying speed of casting billets is not influenced, and improves the production efficiency.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the water cooling device comprises a plurality of annular cooling headers which are coaxially arranged, wherein the annular cooling headers are connected with a water inlet pipe, and a plurality of nozzles are arranged on the inner sides of the annular cooling headers.
The spacing between the annular cooling headers is 120 mm-200 mm.
The annular cooling header is of rectangular frame structure.
The annular cooling header is circular in cross-section.
The annular cooling header is fixedly arranged on the fixing frame through the mounting rod.
The mounting rod is provided with a mounting plate which is fixedly arranged on the annular cooling header pipe.
The fixing frames are two, and the two fixing frames are arranged in parallel.
Four nozzles are arranged on the inner side of the annular cooling header, and the four nozzles are respectively positioned at the midpoints of four sides of the annular cooling header.
The nozzles are fixedly arranged on the annular cooling header through branch pipes.
The water inlet pipe is positioned between the two fixing frames.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model comprises a plurality of annular cooling headers which are coaxially arranged, wherein the annular cooling headers are connected with a water inlet pipe, and a plurality of nozzles are arranged on the inner side of the annular cooling headers. When the continuous casting billet sequentially passes through the inside of the annular cooling headers, the annular cooling headers spray water to the continuous casting billet for cooling through the nozzles, and the uniformity of the head and tail temperatures of the continuous casting billet is ensured by controlling the water spraying start-stop time and the water spraying flow of the nozzles of each annular cooling header. And in the cooling process, the continuous casting blank is kept to be transported forwards without being deliberately parked, so that the conveying speed of the casting blank is not influenced, and the production efficiency is ensured.
Further, the interval between the annular cooling headers is 120-200 mm, so that the cooling continuity is ensured, and the uniformity of the head and tail temperatures of the continuous casting blanks is facilitated.
Further, four nozzles are arranged on the inner side of the annular cooling header, and the four nozzles are respectively positioned at the midpoints of four sides of the annular cooling header. The four nozzles can be guaranteed to just correspond to one side face of the continuous casting billet, and the uniformity of the head-to-tail temperature of the continuous casting billet is further guaranteed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
fig. 2 is a schematic view of the structure of the annular cooling header of the present utility model.
Wherein, 1, an annular cooling header; 2. continuously casting blank; 3. a mounting plate; 4. a mounting rod; 5. a fixing frame; 6. a water inlet pipe; 7. a branch pipe; 8. and (3) a nozzle.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a water cooling device for homogenizing the temperature of the head and the tail of a continuous casting billet comprises a plurality of annular cooling headers 1 which are coaxially arranged, wherein the annular cooling headers 1 are connected with a water inlet pipe 6, and a plurality of nozzles 8 are arranged on the inner side of each annular cooling header 1.
Preferably, the utility model comprises a plurality of coaxially arranged annular cooling headers 1, the annular cooling headers 1 are connected with water inlet pipes 6, and a plurality of nozzles 8 are arranged on the inner side of the annular cooling headers 1. When the continuous casting billets 2 sequentially pass through the annular cooling headers 1, the annular cooling headers 1 spray water to the continuous casting billets 2 through the nozzles 8 to cool, and the water spraying start-stop time and the water spraying flow of the nozzles 8 of each annular cooling header 1 are controlled to ensure the uniformity of the head and tail temperatures of the continuous casting billets 2. When the distance between the continuous casting billet head and the device is greater than a certain distance, cooling water enters the annular cooling header through the water inlet pipe and is sprayed on the surface of the continuous casting billet through the nozzle, so that the temperature of the middle part and the tail part of the continuous casting billet is reduced, the temperature difference between the head and the tail of the continuous casting billet can be reduced, and the uniform temperature control of the casting billet is realized. The utility model has simple structure and convenient use. Compared with the traditional cooling device, the cooling device provided by the utility model can reduce the temperature difference between the head and the tail of the continuous casting billet by 30-60 ℃ on the basis of natural cooling of the continuous casting billet, and can reduce the average temperature difference between the head and the tail of the continuous casting billet to below 60 ℃. And in the cooling process, the continuous casting blank 2 is kept to be transported forwards without being deliberately parked, so that the conveying speed of the casting blank is not influenced, and the production efficiency is ensured.
Preferably, the device is arranged at a position 1 m-5 m in front of a cutting point of the continuous casting machine, and can also be arranged at a position 0.5 m-1.5 m after cutting of the continuous casting billet.
Preferably, the distance between the nozzle 8 and the continuous casting billet 2 is set to be 60 mm-240 mm, and the cooling water flow rates of the nozzles 8 on the same annular cooling header 1 are the same.
Preferably, the total cooling water volume of the annular cooling header 1 is 2m 3 /h～30m 3 /h。
Preferably, the space between the annular cooling headers 1 is 120-200 mm, so that the cooling continuity is ensured, and the uniformity of the head and tail temperatures of the continuous casting billets 2 is facilitated.
Preferably, the number of the annular cooling headers 1 is one to five, and when the number of the annular cooling headers 1 is plural, the spacing between the annular cooling headers 1 is set to 120mm to 200mm. The distance between the annular cooling headers 1 can be adjusted according to the requirements in actual production.
As shown in fig. 1 and 2, the annular cooling header 1 has a rectangular frame structure.
Preferably, the annular cooling header 1 may also have a rounded rectangular structure, a circular structure, an elliptical structure or a polygonal structure.
The annular cooling header 1 is circular in cross section.
As shown in fig. 1, the annular cooling header 1 is fixedly provided on the mount 5 by the mounting rod 4.
As shown in fig. 1, the mounting rod 4 is provided with a mounting plate 3, and the mounting plate 3 is fixedly provided on the annular cooling header 1.
As shown in fig. 1, two fixing frames 5 are provided, and the two fixing frames 5 are arranged in parallel.
As shown in fig. 1 and 2, four nozzles 8 are arranged on the inner side of the annular cooling header 1, and the four nozzles 8 are respectively positioned at the midpoints of four sides of the annular cooling header 1, so that the four nozzles 8 just correspond to one side surface of the continuous casting billet 2, and the uniformity of the head and tail temperatures of the continuous casting billet 2 is further ensured.
As shown in fig. 2, the nozzles 8 are fixedly provided to the annular cooling header 1 through the branch pipes 7.
As shown in fig. 1, the water inlet pipe 6 is located between two fixing frames 5.
Embodiment one:
the device is applied to a billet continuous casting machine with a section of 150mm multiplied by 150mm, and is arranged at the position 2m in front of a cutting point of the continuous casting machine. The fixing frame 5 is provided with 3 annular cooling headers, the spacing between the annular cooling headers 1 is 200mm, and the cross section of the annular cooling headers 1 is circular. The continuous casting billet 2 is perpendicular to the plane of the annular cooling header 1, and four nozzles 8 on the annular cooling header 1 correspond to four sides of the continuous casting billet 2 respectively. The end face of the nozzle 8 is 130mm away from the continuous casting billet, and the cooling water flow rate of the nozzle 8 is the same. Total cooling water quantity of annular cooling header 1Is 3 to 8m 3 /h。
Embodiment two:
the device is applied to a billet continuous casting machine with the section of 170mm multiplied by 170mm, and is arranged at the position 4m in front of the cutting point of the continuous casting machine. The fixing frame 5 is provided with 4 annular cooling headers, the spacing between the annular cooling headers is 150mm, and the cross section of the annular cooling header 1 is circular. The continuous casting billet 2 is perpendicular to the plane of the annular cooling header 1, and four nozzles 8 on the annular cooling header 1 correspond to four sides of the continuous casting billet 2 respectively. The end face of the nozzle 8 is 150mm away from the continuous casting billet, and the cooling water flow rate of the nozzle 8 is the same. The total cooling water quantity of the annular cooling header 1 is 5-13 m 3 /h。
Embodiment III:
the device is applied to a rectangular billet continuous casting machine with a section of 165mm multiplied by 280mm, and is arranged at the position 3m in front of a cutting point of the continuous casting machine. The fixing frame 5 is provided with 4 annular cooling headers, the space between the annular cooling headers 1 is 150mm, and the cross section of the annular cooling headers 1 is circular. The continuous casting billet 2 is perpendicular to the plane of the annular cooling header 1, and four nozzles 8 of the annular cooling header 1 correspond to four side surfaces of the continuous casting billet 2 respectively. The narrow face of the continuous casting billet 2 is 140mm away from the end face of the nozzle, the wide face of the continuous casting billet 2 is 180mm away from the end face of the nozzle 8, and the cooling water flow rates of the nozzles 8 are the same. The total cooling water quantity of the annular cooling header 1 is 7-17 m 3 /h。
The water cooling device for the head and tail temperature equalization of the continuous casting billet provided by the utility model cools the continuous casting billet in stages, effectively reduces the head and tail temperature difference of the continuous casting billet on the premise of ensuring the stability of the rod and wire direct rolling process, reduces the influence of the direct rolling process on the stability of the structure and performance of the steel product, and improves the product quality.
In summary, the above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The water cooling device for the head and tail temperature equalization of the continuous casting billet is characterized by comprising a plurality of annular cooling headers (1) which are coaxially arranged, wherein the annular cooling headers (1) are connected with a water inlet pipe (6), and a plurality of nozzles (8) are arranged on the inner side of each annular cooling header (1);
the annular cooling header (1) is fixedly arranged on the fixing frame (5) through the mounting rod (4);
the number of the fixing frames (5) is two, and the two fixing frames (5) are arranged in parallel.
2. A continuous casting billet head-to-tail temperature equalizing water cooling device according to claim 1, characterized in that the spacing between the annular cooling headers (1) is 120-200 mm.
3. A continuous casting billet head-to-tail temperature equalizing water cooling device according to claim 2, characterized in that the annular cooling header (1) is of rectangular frame structure.
4. A continuous casting billet head-tail temperature equalizing water cooling device according to claim 3, characterized in that the annular cooling header (1) is circular in cross section.
5. A continuous casting billet head-tail temperature equalizing water cooling device according to claim 1, characterized in that the mounting rod (4) is provided with a mounting plate (3), and the mounting plate (3) is fixedly arranged on the annular cooling header (1).
6. A continuous casting billet head-tail temperature equalizing water cooling device according to claim 1, characterized in that four nozzles (8) are arranged on the inner side of the annular cooling header (1), and the four nozzles (8) are respectively positioned on the midpoints of four sides of the annular cooling header (1).
7. A continuous casting billet head-to-tail temperature equalizing water cooling device according to claim 1, characterized in that the nozzle (8) is fixedly arranged on the annular cooling header (1) through a branch pipe (7).
8. A continuous casting billet head-tail temperature equalizing water cooling device according to claim 1, characterized in that the water inlet pipe (6) is positioned between two fixing frames (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320878501.4U CN220591513U (en) | 2023-04-18 | 2023-04-18 | Water cooling device for head and tail uniform temperature of continuous casting billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320878501.4U CN220591513U (en) | 2023-04-18 | 2023-04-18 | Water cooling device for head and tail uniform temperature of continuous casting billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220591513U true CN220591513U (en) | 2024-03-15 |
Family
ID=90176761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320878501.4U Active CN220591513U (en) | 2023-04-18 | 2023-04-18 | Water cooling device for head and tail uniform temperature of continuous casting billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220591513U (en) |
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2023
- 2023-04-18 CN CN202320878501.4U patent/CN220591513U/en active Active
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