CN202639321U - Crystallizer immersion water gap used for heavy rail steel production - Google Patents
Crystallizer immersion water gap used for heavy rail steel production Download PDFInfo
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- CN202639321U CN202639321U CN 201220267186 CN201220267186U CN202639321U CN 202639321 U CN202639321 U CN 202639321U CN 201220267186 CN201220267186 CN 201220267186 CN 201220267186 U CN201220267186 U CN 201220267186U CN 202639321 U CN202639321 U CN 202639321U
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- molten steel
- crystallizer
- water gap
- side opening
- side holes
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Abstract
The utility model discloses a crystallizer immersion water gap used for heavy rail steel production. The crystallizer immersion water gap comprises a water gap body. Two first side holes are symmetrically arranged on the lower portion of the water gap body along the circumferential direction. Two second side holes are symmetrically arranged on the lower portion of the water gap body along the circumferential direction. The second side holes and the first side holes are located on the same circle in a staggered mode. Molten steel is shunted through the two additionally arranged second side holes, the running speed of the molten steel is reduced, impact on the wall of a crystallizer by the molten steel is reduced, and therefore, impact depth of the molten steel is lowered, molten steel flowing back along the wall of the crystallizer obviously increases, contact of mold flux and the molten steel is increased, and inclusion adsorption ability of the mold flux is fully exerted. Meanwhile, the two first side holes and the two second side holes are respectively aligned with four corners of the crystallizer, accordingly when the molten steel flows out, four rotational flow is formed, and therefore transverse flowing of the molten steel on a wide face and a narrow face of the crystallizer is uniform, and a slag entrapment phenomenon is reduced. The crystallizer immersion water gap is suitable for the heavy rail steel production.
Description
Technical field
The utility model relates to crystallizer, refers to particularly a kind of crystallizer submersed nozzle for Properties of Heavy Rail Steel production.
Background technology
Because the heavy rail purposes is special, thus very strict to its production testing, usually take the flaw detection by Zhi Quanchang, flaw detection does not conform to and will declare useless the processing.And, the steel of heavy rail is required also very strict, crystallizer is as the last metallurgical unit of steel-making, and the separation of field trash is removed and prevented that covering slag is involved in important.Therefore, by crystallizer submersed nozzle is optimized, make the flow field of molten steel in crystallizer more reasonable, to further reinforcement clamp foreign material go out except and to improve the heavy rail fault detection qualification rate significant.
Existing crystallizer submersed nozzle bottom generally only is provided with two side openings that are arranged symmetrically with, and has so following two problems:
1, owing to only has two side openings, so the flow velocity when molten steel flows out is larger, the impact depth of molten steel is darker, like this, more molten steel can flow downward along crystallizer wall after molten steel impacted crystallizer wall, only have few molten steel upwards to reflux along crystallizer wall, cause covering slag abundant not with contacting of molten steel, can't give full play to the effect that covering slag absorption is mingled with;
2, form two strands of molten steel after molten steel flows out, these two strands of molten steel are stronger to the leptoprosopy impact of crystallizer, are unfavorable for that the base shell at leptoprosopy center evenly solidifies, and easily slag occur.
Summary of the invention
The purpose of this utility model is the deficiency that exists in order to solve the above-mentioned background technology, proposes a kind of immersion mold gap for Properties of Heavy Rail Steel production, and it can go out to remove and raising heavy rail fault detection qualification rate by reinforcement clamp foreign material.
For achieving the above object, a kind of crystallizer submersed nozzle for Properties of Heavy Rail Steel production that the utility model is designed, comprise mouth of a river body, this body bottom, mouth of a river along the circumferential direction has been arranged symmetrically with two the first side openings, body bottom, the described mouth of a river along the circumferential direction has been arranged symmetrically with two the second side openings, and the second side opening and described the first side opening are positioned at dislocation layout on the same circumference.Be molten steel shunting by two the second side openings that add, slowed down the flow velocity of molten steel, thereby weakened the impact of molten steel to crystallizer wall, like this, the impact depth of molten steel reduces, the molten steel showed increased that refluxes on the crystallizer wall has strengthened contacting of covering slag and molten steel, has given full play to the ability that covering slag absorption is mingled with; Simultaneously, described two the first side openings and two the second side openings are aimed at respectively four bights of crystallizer, and like this, molten steel can form four eddy flows when flowing out, thereby make molten steel even in the lateral flow of wide of crystallizer and leptoprosopy, have reduced the generation of slag.
In such scheme, the side opening inclination alpha of described the first side opening and the second side opening is 18 ~ 22 °.
In such scheme, the angle of flare β of described the first side opening and the second side opening is 7 ~ 9 °.
In such scheme, described the second side opening is 79 ~ 81 ° with respect to the established angle γ of described the first side opening.Described established angle is the angle of described the second side opening symmetry axis and described the first side opening symmetry axis, and described established angle is determined according to parameters such as crystallizer cross dimension and pouring molten steel speed.
The utility model has the advantage of:
1, be the molten steel shunting by two the second side openings that add, slowed down the flow velocity of molten steel, thereby weakened the impact of molten steel to crystallizer wall, like this, the impact depth of molten steel reduces, the molten steel showed increased that refluxes on the crystallizer wall has strengthened contacting of covering slag and molten steel, has given full play to the ability that covering slag absorption is mingled with;
2, described two the first side openings and two the second side openings are aimed at respectively four bights of crystallizer, and like this, molten steel can form four eddy flows when flowing out, thereby make molten steel even in the lateral flow of wide of crystallizer and leptoprosopy, have reduced the generation of slag.
Description of drawings
Fig. 1 is the structural representation at this mouth of a river;
Fig. 2 is that the A-A of Fig. 1 is to structural representation;
Fig. 3 is the flow field simulation figure that steel flow has the mouth of a river;
Fig. 4 is the flow field simulation figure that molten steel flows out this mouth of a river.
Among the figure: mouth of a river body 1, the first side opening 2, the second side openings 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
A kind of crystallizer submersed nozzle for Properties of Heavy Rail Steel production as shown in Figure 1, comprise mouth of a river body 1, this mouth of a river body 1 bottom along the circumferential direction has been arranged symmetrically with two the first side openings 2, body 1 bottom, the described mouth of a river along the circumferential direction has been arranged symmetrically with two the second side opening 3, the second side openings 3 and described the first side opening 2 is positioned at dislocation layout on the same circumference.
The side opening inclination alpha of above-mentioned the first side opening 2 and the second side opening 3 is 18 ~ 22 °.The angle of flare β of described the first side opening 2 and the second side opening 3 is 7 ~ 9 °.Described the second side opening 3 is 79 ~ 81 ° with respect to the established angle γ of described the first side opening 2.Described the first side opening 2 is identical with the shape and size of the second side opening 3.Described established angle is the angle of described the second side opening 3 symmetry axis and described the first side opening 2 symmetry axis, and described established angle is determined according to parameters such as crystallizer cross dimension and pouring molten steel speed.
The utility model is the molten steel shunting by two the second side openings 3 that add, slowed down the flow velocity of molten steel, thereby weakened the impact of molten steel to crystallizer wall, like this, the impact depth of molten steel reduces, the molten steel showed increased that refluxes on the crystallizer wall has strengthened contacting of covering slag and molten steel, has given full play to the ability that covering slag absorption is mingled with; Described two the first side openings 2 and two the second side openings 3 are aimed at respectively four bights of crystallizer, and like this, molten steel can form four eddy flows when flowing out, thereby make molten steel even in the lateral flow of wide of crystallizer and leptoprosopy, have reduced the generation of slag.
Claims (5)
1. one kind is used for the crystallizer submersed nozzle that Properties of Heavy Rail Steel is produced, comprise mouth of a river body (1), this mouth of a river body (1) bottom along the circumferential direction has been arranged symmetrically with two the first side openings (2), it is characterized in that: described mouth of a river body (1) bottom along the circumferential direction has been arranged symmetrically with two the second side openings (3), and the second side opening (3) and described the first side opening (2) are positioned at dislocation layout on the same circumference.
2. the crystallizer submersed nozzle of producing for Properties of Heavy Rail Steel according to claim 1, it is characterized in that: the side opening inclination alpha of described the first side opening (2) and the second side opening (3) is 18 ~ 22 °.
3. the crystallizer submersed nozzle of producing for Properties of Heavy Rail Steel according to claim 1 and 2, it is characterized in that: the angle of flare β of described the first side opening (2) and the second side opening (3) is 7 ~ 9 °.
4. the crystallizer submersed nozzle of producing for Properties of Heavy Rail Steel according to claim 1 and 2, it is characterized in that: described the second side opening (3) is 79 ~ 81 ° with respect to the established angle γ of described the first side opening (2).
5. the crystallizer submersed nozzle of producing for Properties of Heavy Rail Steel according to claim 3, it is characterized in that: described the second side opening (3) is 79 ~ 81 ° with respect to the established angle γ of described the first side opening (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267186 CN202639321U (en) | 2012-06-07 | 2012-06-07 | Crystallizer immersion water gap used for heavy rail steel production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267186 CN202639321U (en) | 2012-06-07 | 2012-06-07 | Crystallizer immersion water gap used for heavy rail steel production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202639321U true CN202639321U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220267186 Expired - Lifetime CN202639321U (en) | 2012-06-07 | 2012-06-07 | Crystallizer immersion water gap used for heavy rail steel production |
Country Status (1)
| Country | Link |
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| CN (1) | CN202639321U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689698A (en) * | 2016-03-09 | 2016-06-22 | 日照钢铁控股集团有限公司 | Braking-type submerged nozzle for beam blank continuous casting |
| CN107716886A (en) * | 2017-10-31 | 2018-02-23 | 江苏常铝铝业股份有限公司 | For producing the crystallizer casting buoy of aluminium alloy cast ingot |
| CN108480609A (en) * | 2018-03-30 | 2018-09-04 | 东北大学 | A kind of continuous casting Anti-blocking immersion nozzle |
-
2012
- 2012-06-07 CN CN 201220267186 patent/CN202639321U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689698A (en) * | 2016-03-09 | 2016-06-22 | 日照钢铁控股集团有限公司 | Braking-type submerged nozzle for beam blank continuous casting |
| CN107716886A (en) * | 2017-10-31 | 2018-02-23 | 江苏常铝铝业股份有限公司 | For producing the crystallizer casting buoy of aluminium alloy cast ingot |
| CN107716886B (en) * | 2017-10-31 | 2024-02-20 | 江苏常铝铝业集团股份有限公司 | Crystallizer casting buoy for producing aluminum alloy cast ingot |
| CN108480609A (en) * | 2018-03-30 | 2018-09-04 | 东北大学 | A kind of continuous casting Anti-blocking immersion nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171025 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |