CN201823907U - Immersion pouring long nozzle - Google Patents
Immersion pouring long nozzle Download PDFInfo
- Publication number
- CN201823907U CN201823907U CN201020526133XU CN201020526133U CN201823907U CN 201823907 U CN201823907 U CN 201823907U CN 201020526133X U CN201020526133X U CN 201020526133XU CN 201020526133 U CN201020526133 U CN 201020526133U CN 201823907 U CN201823907 U CN 201823907U
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- long nozzle
- ring
- gasket
- steel
- inner cavity
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Abstract
The utility model discloses an immersion pouring long nozzle which belongs to the technical field of metallurgical casting equipment and aims at solving the phenomenon that molten steel overflows from the long nozzle when a steel ladle is replaced for pouring during the continuous casting process. The technical scheme is as follows: the immersion pouring long nozzle comprises a steel cylinder long nozzle and a backing ring, and is improved in that the inner cavity of the long nozzle adopts a cylinder hollow cavity with a certain conical degree; the diameter of the upper end of the inner cavity is 100 mm; the diameter of the lower end of the inner cavity is 145 mm; the backing ring of the long nozzle comprises an outer circular ring and an inner gasket ring; and the inner gasket ring which adopts two semi-circular gasket rings is sleeved on the inner circumference of the outer circular ring. The immersion pouring long nozzle has the advantages that the original structure that the straight barrel-shaped long nozzle with same upper and lower parts is changed into the structure that a straight barrel is combined with an inclined plane for forming an upper small part and a lower large part, thereby enabling the inner cavity of the long nozzle to have a certain conical degree, reducing the resistance of air, and increasing the volume of the hollow cavity in the long nozzle; and the original structure that the backing ring adopts a circular ring is changed into the structure that the circular ring is combined with the two semi-circular gasket rings, thereby ensuring that the long nozzle with the novel structure is uniformly stressed during the use and the position of the long nozzle is stable.
Description
Technical field
The utility model relates to the protection casting long nozzle that ladle uses in the tundish steel pouring process, belong to metallurgical casting equipment technical field.
Background technology
In steel rolling is produced; conventional slab caster and thin-slab caster in casting cycle for avoiding secondary oxidation of steel; all between ladle and tundish, use long nozzle, and Argon does not contact with air with the protection molten steel in the long nozzle, thereby avoided the secondary oxidation of molten steel in casting cycle.Traditional protection casting long nozzle is the straight barrel type structure, and promptly diameter is unified up and down.This long nozzle is changed ladle at continuous-casting steel pouring and is opened can only open more than the molten steel face in tundish in the process of watering and water, when ladle open water successfully after, the ladle that descends again inserts under the molten steel face protection casting long nozzle.
There is following shortcoming in this traditional long nozzle:
If 1 produces high value added product, for guaranteeing variety and quality, long nozzle will insert deeply to open below the molten steel face and water, open with the elimination molten steel and water nitrogen pick-up and volume slag and prevent secondary oxidation of steel, and be a kind of mode of operation that improves slab quality.If exist the cold steel not fully removed in the long nozzle this moment, the logical steel area of long nozzle is reduced, and the air that enters in the long nozzle in the cast gap can't be removed, ladle is opened water the back molten steel that the influence that the compression of air reacts on the steel stream of making a bet is increased greatly, when reaction force acquires a certain degree, can cause separating of mouth of a river short time under long nozzle and the ladle, add the reverse movement seam crossing ejection in the mouth of a river under long nozzle and the ladle that makes progress of top molten steel, the steel ladle sliding water gap mechanism that causes long nozzle clamping manipulator and long nozzle top is burnt and the accident of being forced to open wide cast or changing ladle.Even the person and device security and slab quality caused the threat that can't determine.
2, for avoiding the steel accident of overflowing, often adopt long nozzle above the tundish liquid steel level or shallow insertion open and water, be easy in tundish, cause molten steel volume slag like this, also can make the direct ingress of air of part molten steel, cause molten steel nitrogen pick-up and secondary oxidation, all slab quality is had a negative impact.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of continuous casting that can solve and changes ladle and open the overflow immersion of steel phenomenon of long nozzle when watering and open and water long nozzle.
The technical scheme that solves the problems of the technologies described above is:
A kind of immersion is opened and is watered long nozzle, and it is made up of steel drum long nozzle and backing ring, and its improvements are, the inner chamber of long nozzle is the cylinder cavity that tapering is arranged, and tapering is 0.9-1.1 °, and the inner chamber upper end diameter is 100mm ± 1mm, and lower end diameter is 145mm ± 1mm.
Above-mentioned immersion is opened and is watered long nozzle, its backing ring is made up of outer ring annulus and inner ring gasket ring, the inner ring gasket ring is two semicircle gasket rings, fluted on the inner periphery of outer ring annulus, on the excircle of inner ring gasket ring boss is arranged, the boss of the groove of outer ring annulus and inner ring gasket ring is complementary, and the inner ring gasket ring is sleeved on the inner periphery of outer ring annulus.
Usefulness of the present utility model is:
From identical the combine up-small and down-big form of transition of straight tube and inclined-plane that changes into up and down, make the inner chamber of long nozzle have certain tapering the logical steel pipe shape of original straight tubular long nozzle, reduce the backward-acting of air, increased long nozzle internal cavities volume simultaneously; Change backing ring into annulus and two semicircle gasket ring combining structures from annulus, guarantee the stressed all even position stability in the use of new construction long nozzle.
Description of drawings
Fig. 1 is the structural representation of long nozzle of the present utility model.
Fig. 2 is the structural representation of backing ring of the present utility model.
Number in the figure is as follows: Argon joint 1, long nozzle shell 2, ceramic wool 3, zirconium matter district 4, long nozzle upper end 5, inner ring gasket ring 6, outer ring annulus 7.
The specific embodiment
Show among the figure that the utility model is made up of improved steel drum long nozzle and backing ring.
The tradition long nozzle because up and down diameter same lumen volume is less, the air in the long nozzle is compressed the back and produces reverse reaction force greater than the pressure of manipulator to long nozzle, thereby long nozzle is separated with the mouth of a river under the ladle, and molten steel is overflowed.The subject matter of above-mentioned long nozzle is the less reaction force that is not enough to reduce air of cavity volume; Therefore reduce the excessive steel phenomenon in the mouth of a river by increasing the long nozzle cavity volume, but for not influencing combining of the mouth of a river and ladle, therefore adopt the long nozzle that has tapering, promptly adopt top identical with former mouth of a river diameter and increase the purpose that mouth of a river diameter has reached increase mouth of a river cavity volume gradually.
According to the inner inner chamber that tapering is arranged that adopts of the long nozzle of this design, tapering is controlled to be 0.9-1.1 °, is the mouth of a river under the tight cooperation ladle, and the diameter of long nozzle upper end 5 is 100mm, tolerance+1mm, lower end final diameter 145mm, tolerance+1mm.After adopting this structure, air in the long nozzle is compressed the back reaction force of the molten steel of making a bet is reduced to is not enough to produce the power that long nozzle separates with the mouth of a river under the ladle, molten steel can't upwards be overflowed by reverse movement.
After the long nozzle lower diameter increased, original long nozzle backing ring internal diameter can not be inserted in long nozzle, therefore backing ring was improved.The utility model has adopted combined long mouth of a river backing ring structure, the long nozzle backing ring is made up of outer ring annulus 7 and inner ring gasket ring 6, inner ring gasket ring 6 is two semicircle gasket rings, fluted on the inner periphery of outer ring annulus 7, on the excircle of inner ring gasket ring 6 boss is arranged, the boss of the groove of outer ring annulus 7 and inner ring gasket ring 6 is complementary, and inner ring gasket ring 6 is sleeved on the inner periphery of outer ring annulus 7.At first long nozzle is inserted in the outer ring annulus 7 during operation, then two inner ring gasket rings 6 is put into outer ring annulus 7.This mounting means can make head is little, the bottom is big novel long nozzle rationally be installed and stablize use.
Claims (2)
1. an immersion is opened and watered long nozzle, and it is made up of steel drum long nozzle and backing ring, it is characterized in that: the inner chamber of long nozzle is the cylinder cavity that tapering is arranged, and tapering is 0.9-1.1 °, and the inner chamber upper end diameter is 100mm ± 1mm, and lower end diameter is 145mm ± 1mm.
2. immersion according to claim 1 is opened and is watered long nozzle, it is characterized in that: its backing ring is made up of outer ring annulus [7] and inner ring gasket ring [6], inner ring gasket ring [6] is two semicircle gasket rings, fluted on the inner periphery of outer ring annulus [7], on the excircle of inner ring gasket ring [6] boss is arranged, the boss of the groove of outer ring annulus [7] and inner ring gasket ring [6] is complementary, and inner ring gasket ring [6] is sleeved on the inner periphery of outer ring annulus [7].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020526133XU CN201823907U (en) | 2010-09-13 | 2010-09-13 | Immersion pouring long nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020526133XU CN201823907U (en) | 2010-09-13 | 2010-09-13 | Immersion pouring long nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201823907U true CN201823907U (en) | 2011-05-11 |
Family
ID=43962466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020526133XU Expired - Fee Related CN201823907U (en) | 2010-09-13 | 2010-09-13 | Immersion pouring long nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201823907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315061A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of mouth of a river that can prevent pipeline and discharge hole bottom from adhering to |
-
2010
- 2010-09-13 CN CN201020526133XU patent/CN201823907U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315061A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of mouth of a river that can prevent pipeline and discharge hole bottom from adhering to |
| CN110315061B (en) * | 2018-03-30 | 2021-10-19 | 宝山钢铁股份有限公司 | Can prevent mouth of a river of pipeline and spit hole bottom adhesion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20130913 |