CN105014027B - Molten steel pre-cooling device for high speed continuous casting machine - Google Patents
Molten steel pre-cooling device for high speed continuous casting machine Download PDFInfo
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- CN105014027B CN105014027B CN201510520814.2A CN201510520814A CN105014027B CN 105014027 B CN105014027 B CN 105014027B CN 201510520814 A CN201510520814 A CN 201510520814A CN 105014027 B CN105014027 B CN 105014027B
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Abstract
The invention provides a molten steel pre-cooling device for a high speed continuous casting machine. The molten steel pre-cooling device comprises a molten steel pre-cooling barrel, a rotating disc and a rotating disc transmission system; the rotating disc is arranged in the molten steel pre-cooling barrel, the rotating disc transmission system is connected with the rotating disc, and a cooling inert gas inlet is formed in the connecting position of the rotating disc transmission system and the rotating disc; and a gas outlet is formed in the molten steel pre-cooling barrel, a molten steel outlet is formed in the bottom of the molten steel pre-cooling barrel, and the molten steel outlet and a long water opening of a crystallizer are connected. The molten steel pre-cooling device has the beneficial effects that the mechanical power is provided for the rotating disc through the rotating disc transmission system, molten steel is smashed, the temperature of the molten steel drops through heat exchange between the smashed molten steel and the cooling gas to approach to the curing temperature, and the degree of superheat of the molten steel is reduced; and meanwhile, a crystal nucleus of the molten steel is formed, the necessary liquid level is kept at the lower portion of the molten steel pre-cooling barrel, stabilization of molten steel when the molten steel is injected into the crystallizer is guaranteed, the solidification speed of the molten steel in the crystallizer is increased, grain refinement of the molten steel in the crystallizer is quickened, and the steel drawing speed is increased.
Description
Technical field
The invention belongs to conticaster field, precools device more particularly, to a kind of molten steel for high-speed continuous casting machine.
Background technology
It is well known that continuous casting installation for casting is typically by groups such as steel ladle, turret, pans, crystallizer, secondary cooling zone and withdrawal straightening machines
Into.Continuous casting operation principle is：By on turret of the molten steel of steelshop offer by steel ladle handling to conticaster, molten steel passes through
Molten steel water-coating port injects intermediate tank of continuous casting machine, and molten steel is injected conticaster crystallization by immersion long nozzle by the molten steel in pans
Device, molten steel pull out to form continuous casting billet from crystallizer lower end after cooling down crust in a crystallizer.It can thus be appreciated that the process of molten steel solidification
It is：Molten steel is cooled into nucleus nuclei growth and is fully cured.In general, the nucleus that early solidification is formed is more, steel
Crystal grain after water-setting is solid is more refined, and steel quality is better.Therefore, the main cause for restricting pulling speed of continuous casting is molten steel in crystallizer
Cooling velocity is slow, crust is slow, and one of the reason for crust slow be exactly molten steel the degree of superheat it is too high, impact setting rate.Existing
In technology, increase heat transfer efficiency typically between crystallizer and steel billet, cooling velocity of the molten steel in crystallizer accelerated with this,
But this kind of method not can solve such technical problem.
The content of the invention
In view of this, the inventive point of this patent is not to increase heat transfer efficiency between crystallizer and steel billet, but in molten steel
Overtemperature on make improvement, i.e., between tundish and crystallizer increase by one be used for high-speed continuous casting machine molten steel precool
Device.
For reaching above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of molten steel for high-speed continuous casting machine precools device, precools bucket, rotating disk and rotating disk including molten steel and passes
Dynamic system, the molten steel precool bucket position in the bottom of tundish, and the molten steel in tundish is precooled at the top of bucket by molten steel
Molten steel entrance enters molten steel and precools bucket, precools in bucket in the molten steel and is provided with the rotation below the molten steel entrance
Rotating disk, the rotating disk transmission system are connected with the rotating disk, disc spins are rotated, smash molten steel by machine power
Nebulize, graininess, precool in the molten steel and be located at the junction of the rotating disk transmission system and rotating disk on bucket wall and open
Cooling inert gas air inlet is provided with, for being passed through cooling inert gas, the molten steel after crushing is handed over the hot of cooling gas
The temperature cooling of molten steel of changing commanders is close to solidification temperature, reduces the degree of superheat of liquid molten steel, while the nucleus of molten steel is formed, described
Molten steel is precooled and be provided with gas outlet above the rotating disk, for discharging cooling inert gas, in the steel
Water precools the bottom of bucket and is provided with molten steel outlet, and the molten steel outlet is connected with the long nozzle of crystallizer.
Further, the rotating disk transmission system includes motor, reductor, power transmission shaft and umbrella gear box, the motor,
Reductor is located at the outside that molten steel precools bucket, and the motor is connected with reductor, and the umbrella gear box is connected with rotating disk, institute
The bucket wall that power transmission shaft precools bucket through the molten steel is stated, the reductor is connected with umbrella gear box by power transmission shaft, drive rotation
Turntable rotation.
Further, the rotating disk is covered with insulation material outside which by heat-resisting steel making.
Further, the rotating disk transmission system is covered with insulation material outside which by heat-resisting steel making.
Further, in order to ensure stablizing for molten steel injection crystallizer, molten steel is precooled in molten steel to be needed according to drawing in bucket
Steel speed keeps certain liquid level, so as to accelerate molten steel setting rate in a crystallizer and crystal grain refinement, so as to improve
Pulling rate.
Relative to prior art, the molten steel precooling device for high-speed continuous casting machine of the present invention has following excellent
Gesture：Machine power is provided by rotating disk transmission system for rotating disk, molten steel is smashed, the molten steel after crushing with cooling gas
The temperature cooling of molten steel is close to solidification temperature by the heat exchange of body, reduces the degree of superheat of liquid molten steel, while forming the crystalline substance of molten steel
Core, reduces the brilliant diameter of the brilliant length of orientation and equiaxial No yield point, reduces the precipitation of harmful substance in molten steel, and molten steel precools bucket
Bottom equally keep necessary liquid level, it is ensured that molten steel injection crystallizer is stablized, so as to accelerating molten steel in a crystallizer
Setting rate and crystal grain refinement, improve draw steel speed；With structure novelty, improve continuous casting billet quality, improve pulling speed of continuous casting etc.
Advantage.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the present invention.
Description of reference numerals：
1- molten steel precooling bucket, 2- rotating disks, 3- tundish, 4- motors, 5- reductors, 6- power transmission shafts, 7- umbrella gear box,
8- cools down inert gas air inlet, 9- gas outlets, 10- molten steel outlets.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment and the feature in embodiment in the present invention can phase
Mutually combine.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As shown in figure 1, a kind of molten steel for high-speed continuous casting machine precools device, bucket 1, rotating disk is precooled including molten steel
2 and rotating disk transmission system, the molten steel precools the bottom that bucket 1 is located at tundish 3, and the molten steel in tundish 3 passes through molten steel
Precool the molten steel entrance at the top of bucket 1 and enter molten steel precooling bucket 1, the molten steel is located in molten steel precooling bucket 1 pre-
The rotating disk 2 is provided with below cooling 1 molten steel entrance of bucket, the rotating disk 2 is covered with insulation by heat-resisting steel making, outside which
Material, the rotating disk transmission system include motor 4, reductor 5, power transmission shaft 6 and umbrella gear box 7, the motor 4, reductor 5
The outside of bucket 1 is precooled positioned at molten steel, the motor 4 is connected with reductor 5, and the umbrella gear box 7 is connected with rotating disk 2, institute
The bucket wall that power transmission shaft 6 precools bucket 1 through the molten steel is stated, the reductor 5 is connected with umbrella gear box 7 by power transmission shaft 6, band
Dynamic rotating disk 2 rotates, molten steel is smashed by machine power nebulize, graininess, the rotating disk transmission system is by heat resisting steel
Manufacture, is covered with insulation material outside which, precools in the molten steel and be provided with cooling inertia at the power transmission shaft 6 on bucket wall
Gas inlet 8, for being passed through cooling inert gas, first cools down rotating disk transmission system and enters back into molten steel precooling bucket 1, pass through
The temperature cooling of molten steel is close to solidification temperature with the heat exchange of cooling gas by the molten steel after crushing, reduces the overheated of liquid molten steel
Degree, while forming the nucleus of molten steel, precools the top on bucket wall positioned at the rotating disk 2 in the molten steel and is provided with gas outlet 9,
For discharging cooling inert gas, the bottom for precooling bucket 1 in the molten steel is provided with molten steel outlet 10, the molten steel outlet 10 with
The long nozzle of crystallizer is connected, and in order to ensure stablizing for molten steel injection crystallizer, molten steel is precooled in bucket 1 in molten steel needs basis
Steel speed is drawn to keep certain liquid level, so as to accelerate molten steel setting rate in a crystallizer and crystal grain refinement, so as to carry
High pulling rate.
During work, the molten steel in tundish 3 enters molten steel and precools bucket 1, and the rotating disk transmission system is rotated disk 2
Rotation, molten steel is smashed by machine power nebulize, graininess, by molten steel precool bucket wall on cooling inert gas enter
Gas port 8 is passed through cooling inert gas, and the temperature cooling of molten steel is close to solidification with the heat exchange of cooling gas by the molten steel after crushing
Temperature, reduces the degree of superheat of liquid molten steel, while forming the nucleus of molten steel, cooling inert gas is discharged by gas outlet 9, molten steel
Crystallizer is entered by molten steel outlet 10, in order to ensure stablizing for molten steel injection crystallizer, molten steel precools bucket domestic demand in molten steel
Will be according to drawing steel speed to keep certain liquid level, so as to accelerate molten steel setting rate in a crystallizer and crystal grain refinement.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (5)
1. a kind of molten steel for high-speed continuous casting machine precools device, it is characterised in that：Including molten steel precool bucket, rotating disk and
Rotating disk transmission system, the molten steel precool bucket position in the bottom of tundish, and the molten steel in tundish is precooled by molten steel
The molten steel entrance at bucket top enters molten steel and precools bucket, is located at below the molten steel entrance and sets in molten steel precooling bucket
There is the rotating disk, the rotating disk transmission system is connected with the rotating disk, precool in the molten steel and be located on bucket wall institute
The junction that rotating disk transmission system is stated with rotating disk offers cooling inert gas air inlet, precools bucket wall in the molten steel
Upper to be provided with gas outlet above the rotating disk, the bottom for precooling bucket in the molten steel is provided with molten steel outlet, the steel
Water out is connected with the long nozzle of crystallizer.
2. a kind of molten steel for high-speed continuous casting machine according to claim 1 precools device, it is characterised in that：The rotation
Rotating disk transmission system includes motor, reductor, power transmission shaft and umbrella gear box, and the motor, reductor are located at molten steel and precool bucket
Outside, the motor is connected with reductor, and the umbrella gear box is connected with rotating disk, and the power transmission shaft is pre- through the molten steel
The bucket wall of cooling bucket, the reductor are connected with umbrella gear box by power transmission shaft.
3. a kind of molten steel for high-speed continuous casting machine according to claim 1 and 2 precools device, it is characterised in that：Institute
Rotating disk is stated by heat-resisting steel making, insulation material is covered with outside which.
4. a kind of molten steel for high-speed continuous casting machine according to claim 3 precools device, it is characterised in that：The rotation
Rotating disk transmission system is covered with insulation material by heat-resisting steel making, outside which.
5. a kind of molten steel for high-speed continuous casting machine according to claim 4 precools device, it is characterised in that：Molten steel exists
Molten steel precools the liquid level needed in bucket according to drawing the holding of steel speed certain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520814.2A CN105014027B (en) | 2015-08-21 | 2015-08-21 | Molten steel pre-cooling device for high speed continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520814.2A CN105014027B (en) | 2015-08-21 | 2015-08-21 | Molten steel pre-cooling device for high speed continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105014027A CN105014027A (en) | 2015-11-04 |
| CN105014027B true CN105014027B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510520814.2A Active CN105014027B (en) | 2015-08-21 | 2015-08-21 | Molten steel pre-cooling device for high speed continuous casting machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331089A (en) * | 2020-03-29 | 2020-06-26 | 崔卷厂 | Environment-friendly aluminum alloy continuous casting mould with thermal cycle structure |
| CN111922307A (en) * | 2020-07-20 | 2020-11-13 | 靖江市巨阳冶金设备制造有限公司 | Molten steel pre-cooling device for high-speed continuous casting machine |
| CN116855920B (en) * | 2023-09-05 | 2023-11-21 | 山西中设华晋铸造有限公司 | Steel strip casting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222202A (en) * | 1996-05-02 | 1999-07-07 | 蓬塔穆松公司 | Method and installation for metallizing cast-iron pipes |
| CN1389317A (en) * | 2002-05-16 | 2003-01-08 | 上海交通大学 | Stepped cooling and continuous casting method of massive amorphous alloy |
| CN205020776U (en) * | 2015-08-21 | 2016-02-10 | 天津市中重科技工程有限公司 | A molten steel is cooling device in advance for high -speed continuous casting machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603124B2 (en) * | 1977-03-24 | 1985-01-25 | 三菱重工業株式会社 | Heat recovery from steel ingots and wire rods |
-
2015
- 2015-08-21 CN CN201510520814.2A patent/CN105014027B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222202A (en) * | 1996-05-02 | 1999-07-07 | 蓬塔穆松公司 | Method and installation for metallizing cast-iron pipes |
| CN1389317A (en) * | 2002-05-16 | 2003-01-08 | 上海交通大学 | Stepped cooling and continuous casting method of massive amorphous alloy |
| CN205020776U (en) * | 2015-08-21 | 2016-02-10 | 天津市中重科技工程有限公司 | A molten steel is cooling device in advance for high -speed continuous casting machine |
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| CN105014027A (en) | 2015-11-04 |
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Address after: No.16, Jingxiang Road, Science Park, Beichen District, Tianjin, 300409 Patentee after: Zhongzhong Technology (Tianjin) Co.,Ltd. Address before: No.16, Jingxiang Road, Science Park, Beichen District, Tianjin, 300409 Patentee before: TIANJIN ZHONGZHONG SCIENCE TECHNOLOGY & ENGINEERING Co.,Ltd. |
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