CN213729241U - Continuous casting secondary cooling system - Google Patents
Continuous casting secondary cooling system Download PDFInfo
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- CN213729241U CN213729241U CN202021968922.9U CN202021968922U CN213729241U CN 213729241 U CN213729241 U CN 213729241U CN 202021968922 U CN202021968922 U CN 202021968922U CN 213729241 U CN213729241 U CN 213729241U
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Abstract
The utility model discloses a continuous casting secondary cooling system, which comprises a foot roller section, a secondary cooling I section, a secondary cooling II section, a secondary cooling III section and a secondary cooling IV section which are connected in sequence, wherein the secondary cooling IV section is connected with the secondary cooling III section; the secondary cooling section IV comprises a support and a bracket arranged on the support, wherein the bracket is provided with a water delivery pipe and four spraying headers communicated with the water delivery pipe, and the water delivery pipe is provided with a water inlet; the four spraying headers are arranged on four sides of the steel billet in a square shape and are of arc structures matched with the shape of the steel billet; nozzles are uniformly arranged on the four spraying collecting pipes; the utility model discloses an increased two cold IV sections on original two cold system four sections refrigerated basis, made two cold system's cooling effect satisfy the steel billet after the pulling rate improves, just also satisfy the steel billet cooling of conticaster pulling rate in 3.9 ~ 4.2m/min within range, and then avoided the steel billet to return to gentle phenomenon emergence that leads to the steel billet fracture and explode the base, guaranteed product quality with, improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the continuous casting equipment technique and specifically relates to a be applicable to the speed of pulling scope at 3.9 ~ 4.2m/min in-connection casting secondary cooling system.
Background
The continuous casting secondary cooling system is also called continuous casting secondary cooling and refers to forced uniform cooling of a casting blank in a length interval from a crystallizer outlet to a withdrawal and straightening unit in the continuous casting steel-making process. This zone is called the secondary cooling zone. The high operation rate of the continuous casting machine and the high quality of the casting blank are closely related to the solidification process of molten steel, and the uniform cooling of the casting blank can be realized by improving a secondary cooling system and optimizing secondary cooling water distribution. Therefore, optimizing secondary cooling is an important measure for efficient continuous casting technology.
The average drawing speed of a traditional continuous casting machine is 2.5-2.6 m/min, and the average drawing speed of the continuous casting machine can be increased to 3.9-4.2 m/min along with the related modification of equipment and processes in a steel rolling mill, such as the modification of a crystallizer, a flame cutter system, the non-positive vibration of an electric cylinder half-plate spring and the like. Traditional two cold systems include foot roll section, two cold I sections, two cold II sections and two cold III sections that link to each other in proper order, but along with the improvement of conticaster pulling speed, original two cold systems have unsatisfied the steel billet cooling after improving the pulling speed, can not in time carry out the secondary cooling to the steel billet, lead to the steel billet to return the temperature. The billet shell can be thinned due to the temperature return of the billet, and the thinned billet shell can not bear the pressure of molten steel, so that the billet is cracked and exploded, and even accidents are caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the conticaster pulling speed and improve the back, the steel billet can not in time refrigerated technical problem provide one kind and be applicable to the continuous casting secondary cooling system of pulling speed scope at 3.9 ~ 4.2m/min within range.
The utility model adopts the technical proposal that: the continuous casting secondary cooling system comprises a foot roller section, a secondary cooling I section, a secondary cooling II section and a secondary cooling III section which are sequentially connected, and further comprises a secondary cooling IV section connected with the secondary cooling III section; the secondary cooling section IV comprises a support and a bracket arranged on the support, wherein the bracket is provided with a water delivery pipe and four spraying headers communicated with the water delivery pipe, and the water delivery pipe is provided with a water inlet; the four spraying headers are arranged on four sides of the steel billet in a square shape and are of arc structures matched with the shape of the steel billet; the four spraying collecting pipes are respectively an outer arc spraying pipe, an inner arc spraying pipe, a left spraying pipe and a right spraying pipe; and nozzles are uniformly arranged on the four spraying headers. The utility model discloses an increased two cold IV sections on original two cold system four sections refrigerated basis, made two cold system's cooling effect satisfy the steel billet after the pulling rate improves, just also satisfy the steel billet cooling of conticaster pulling rate in 3.9 ~ 4.2m/min within range, and then avoided the steel billet to return to gentle phenomenon emergence that leads to the steel billet fracture and explode the base, guaranteed product quality with, improved production efficiency.
Furthermore, the four spraying headers are square tubes, and compared with circular tubes or pipelines with other shapes, the square tubes have the advantages of being higher in tensile strength, stronger in torsion resistance, light in weight and the like.
Furthermore, each spray header is provided with four nozzles to ensure that cooling water is uniformly sprayed on the steel billet.
Furthermore, the distance between each nozzle and the surface of the billet is the same, the distance d between the nozzle and the billet is 100-105 mm, and the spray angle alpha of the nozzle is 60-80 degrees. By the arrangement of the mode, the water sprayed by the nozzles can fully cover the surface of the steel billet, and the cooling effect of the steel billet is ensured.
Further, the distance d between the nozzle and the billet was 105mm, and the spray angle α of the nozzle was 70 °.
Further, the nozzle is the pure water nozzle, and what the pure water nozzle spun is the water smoke, lets water atomization through pressure and angle, compares in rivers, and the water smoke coverage is bigger, required water pressure is littleer, and the cooling effect is better, and is energy-concerving and environment-protective.
Furthermore, the water pressure of the water delivery pipe is 1.23-1.25 Mpa, so that the cooling water is uniformly sprayed on the steel billet.
Furthermore, the spraying header is provided with an inserting plate for positioning and guiding when being connected with the frame.
The utility model has the advantages that:
1. the utility model discloses an increased two cold IV sections on original two cold system four sections refrigerated basis, made two cold system's cooling effect satisfy the steel billet after the pulling rate improves, just also satisfy the steel billet cooling of conticaster pulling rate in 3.9 ~ 4.2m/min within range, and then avoided the steel billet to return to gentle phenomenon emergence that leads to the steel billet fracture and explode the base, guaranteed product quality with, improved production efficiency.
2. The utility model discloses a to the specific arrangement mode of nozzle, can make nozzle spun water to the steel billet surface all standing, guarantee the cooling effect of steel billet.
Drawings
Fig. 1 is a perspective view of the second cooling section iv of the present invention.
Fig. 2 is an installation schematic diagram of the secondary cooling section iv of the present invention.
Fig. 3 is a cross-sectional view of fig. 2 after rotation a-a.
Labeled as: 1. a support; 2. a support; 3. a water delivery pipe; 4. a water inlet; 5. a nozzle; 6. an outer arc shower; 7. an inner arc spray pipe; 8. a left side shower pipe; 9. a right side shower pipe; 10. inserting plates; 11. a steel billet; d. distance between the nozzle and the billet; alpha, the spray angle of the nozzle.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, the continuous casting secondary cooling system of the present invention comprises a foot roller section, a secondary cooling section i, a secondary cooling section ii and a secondary cooling section iii, which are connected in sequence, and further comprises a secondary cooling section iv connected with the secondary cooling section iii; the secondary cooling section IV comprises a support 1 and a bracket 2 arranged on the support, a water delivery pipe 3 and four spraying headers communicated with the water delivery pipe are arranged on the bracket 2, and a water inlet 4 is arranged on the water delivery pipe 3; the four spraying headers are arranged on four sides of the steel billet 11 in a square shape and are of arc structures matched with the shape of the steel billet; the four spraying collecting pipes are respectively an outer arc spraying pipe 6, an inner arc spraying pipe 7, a left spraying pipe 8 and a right spraying pipe 9; and the four spraying headers are uniformly provided with nozzles 5. The utility model discloses an increased two cold IV sections on original two cold system four sections refrigerated basis, made two cold system's cooling effect satisfy the steel billet after the pulling rate improves, just also satisfy the steel billet cooling of conticaster pulling rate in 3.9 ~ 4.2m/min within range, and then avoided the steel billet to return to gentle phenomenon emergence that leads to the steel billet fracture and explode the base, guaranteed product quality with, improved production efficiency.
Referring to fig. 1, the four shower headers of this embodiment are square tubes, and compared with circular tubes or other shaped pipes, the square tubes have the characteristics of higher tensile strength, stronger torsion resistance, light weight, and the like.
Referring to fig. 1, four spray nozzles 5 are provided on each shower header in this embodiment to ensure uniform spraying of cooling water on the steel slab.
Referring to fig. 1, in this embodiment, each nozzle has the same distance from the surface of the billet, the distance d between the nozzle and the billet is 105mm, and the spray angle α of the nozzle is 70 °. By the arrangement of the mode, the water sprayed by the nozzles can fully cover the surface of the steel billet, and the cooling effect of the steel billet is ensured.
The nozzle 5 of this embodiment is the pure water nozzle, and the pure water nozzle spun is the water smoke, lets water atomization through pressure and angle, compares in rivers, and the water smoke coverage is bigger, required water pressure is littleer, and the cooling effect is better, and is energy-concerving and environment-protective.
The water pressure in the water delivery pipe is 1.23-1.25 Mpa, and the cooling water is uniformly sprayed on the steel billet.
Referring to fig. 1, the shower header of this embodiment is provided with insert plates 10 for positioning and guiding when connected to a rack.
The working principle is as follows: and cooling the molten steel from the continuous casting machine through a crystallizer to form a steel billet, wherein the drawing speed of the continuous casting machine is 4.2m/min, in order to ensure that a secondary cooling system meets the drawing speed of the continuous casting machine, the steel billet sequentially passes through a foot roller section, a secondary cooling I section, a secondary cooling II section, a secondary cooling III section and a secondary cooling IV section to be subjected to secondary cooling, and the cooled steel billet is conveyed to the next working procedure through a withdrawal and straightening machine. When the steel billet passes through the secondary cooling IV section, the nozzles on the four spraying collecting pipes uniformly spray water mist to the steel billet to cool the steel billet, so that the normal cooling of the steel billet is ensured, and the temperature return of the steel billet is avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The continuous casting secondary cooling system comprises a foot roller section, a secondary cooling I section, a secondary cooling II section and a secondary cooling III section which are sequentially connected, and is characterized by further comprising a secondary cooling IV section connected with the secondary cooling III section;
the secondary cooling IV section comprises a support (1) and a bracket (2) arranged on the support, a water delivery pipe (3) and four spraying headers communicated with the water delivery pipe are arranged on the bracket (2), and a water inlet (4) is arranged on the water delivery pipe (3);
the four spraying headers are arranged on four sides of the steel billet (11) in a square shape and are of arc structures matched with the shape of the steel billet; the four spraying headers are respectively an outer arc spraying pipe (6), an inner arc spraying pipe (7), a left spraying pipe (8) and a right spraying pipe (9);
the four spraying headers are uniformly provided with nozzles (5);
the distance between each nozzle and the surface of the steel billet is the same, the distance d between each nozzle and the steel billet is 100-105 mm, and the spray angle alpha of each nozzle is 60-80 degrees;
the spraying header is provided with an inserting plate (10).
2. The continuous casting secondary cooling system of claim 1, wherein the four spray headers are square tubes.
3. A continuous casting secondary cooling system according to claim 1, characterized in that four spray nozzles (5) are provided on each spray header.
4. The continuous casting secondary cooling system according to claim 1, wherein the distance d between the nozzle and the slab is 105mm, and the spray angle α of the nozzle is 70 °.
5. A continuous casting secondary cooling system according to claim 1, characterized in that the nozzles (5) are pure water nozzles.
6. The continuous casting secondary cooling system as claimed in claim 1, wherein the water pressure in the water delivery pipe is 1.23 to 1.25 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021968922.9U CN213729241U (en) | 2020-09-10 | 2020-09-10 | Continuous casting secondary cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021968922.9U CN213729241U (en) | 2020-09-10 | 2020-09-10 | Continuous casting secondary cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN213729241U true CN213729241U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021968922.9U Active CN213729241U (en) | 2020-09-10 | 2020-09-10 | Continuous casting secondary cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751678A (en) * | 2021-09-08 | 2021-12-07 | 广东华域重工有限公司 | Production process and processing equipment of high-strength heavy steel |
| CN114346186A (en) * | 2022-01-17 | 2022-04-15 | 马鞍山钢铁股份有限公司 | Conticaster sprays strip calibrating device |
-
2020
- 2020-09-10 CN CN202021968922.9U patent/CN213729241U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113751678A (en) * | 2021-09-08 | 2021-12-07 | 广东华域重工有限公司 | Production process and processing equipment of high-strength heavy steel |
| CN113751678B (en) * | 2021-09-08 | 2023-06-20 | 广东华域重工有限公司 | High-strength heavy steel production process and processing equipment thereof |
| CN114346186A (en) * | 2022-01-17 | 2022-04-15 | 马鞍山钢铁股份有限公司 | Conticaster sprays strip calibrating device |
| CN114346186B (en) * | 2022-01-17 | 2023-09-12 | 马鞍山钢铁股份有限公司 | Calibrating device for spray bars of square billet sector section of continuous casting machine |
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