CN107363252A - The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process - Google Patents
The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process Download PDFInfo
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- CN107363252A CN107363252A CN201710666835.4A CN201710666835A CN107363252A CN 107363252 A CN107363252 A CN 107363252A CN 201710666835 A CN201710666835 A CN 201710666835A CN 107363252 A CN107363252 A CN 107363252A
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- coil
- ladle
- molten steel
- proterozoic group
- lower proterozoic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/38—Means for operating the sliding gate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process, belongs to pouring molten steel device and method technical field.Its technical scheme is：Load coil, Lower proterozoic group main coil and Lower proterozoic group secondary coil are set inside brick cup, load coil, Lower proterozoic group main coil and Lower proterozoic group secondary coil are arranged in order around filling pipe end from top to bottom, load coil and Lower proterozoic group main coil are relative with the top of filling pipe end and middle part, Lower proterozoic group secondary coil is relative with the bottom of filling pipe end, load coil, Lower proterozoic group main coil are connected with AC power respectively, install voltage monitor in circuit respectively.The present invention is pioneering in molding casting technology; solve the problems, such as that the molten steel automatic casting ratio present in casting process is insufficient at present, burns oxygen and drain the secondary oxidation opened in pouring, the accurate whole process protection casting for judging that clinker is not solved effectively for a long time into tundish etc. in steel ladle pouring terminal, ladle, realizing truly.
Description
Technical field
The present invention relates to a kind of flow control device and method for improving Cleanliness of Molten Steel in casting process, belong to pouring molten steel and set
Standby and method and technology field.
Background technology
Inclusion content and size in steel have to the surface and internal flaw of steel, surface property and fatigue behaviour
Considerable influence, it is therefore desirable to reduce steel inclusion, improve the cleanliness factor of steel.Mainly pass through molten iron in process of production at present
The technical measures such as pretreatment, pneumatic steelmaking, external refining, protective casting control the field trash in molten steel, improve the stream of molten steel
, so as to reach the purpose for improving steel cleanliness factor.
During pouring molten steel, molten steel inevitably same air contact, secondary oxidation is produced, so as to add steel
In oxygen, nitrogen content, have impact on the purity of steel.Therefore, molten steel is prevented using protective casting measure in molding casting process
It is an essential technology to produce secondary oxidation with air contact.Ladle to tundish generally use long nozzle is protected at present
Protection of pipe is cast.The intermediate structure flowed through by the use of a long refractory sleeve as molten steel, long nozzle is suitable for reading to slide water with ladle
The collector nozzle connection of mouth, leads to argon gas in junction, prevents air from sucking, the bottom of long nozzle is immersed in the molten steel in tundish
In, make the casting stream of ladle to tundish hermetically sealed in protective atmosphere, can effectively prevent secondary oxidation.
Molten steel, which wants to flow through long nozzle by ladle, enters tundish it may first have to ensures that steel ladle sliding water gap is opened, ladle
Slide gate nozzle is made up of the upper and lower slide plate that tapping hole is left installed in two pieces of centres of ladle bottom, and sliding material is fire proofed wood
Material, lower skateboard is moved by the driving force of outside, controls the registration of upper and lower slide plate tapping hole, so as to play control steel stream
Effect.In slide gate nozzle structure, generally there are 400~600mm tapping channels to ladle bottom at slide plate closure, in order to prevent
Molten steel oozes out and improved ladle casting rate in the passage, and whole passage will add the graininess fire resisting with certain sintering character
Material stuffing sand, it is and the indispensable refractory material of slide gate nozzle mutual cooperation.
In actual production, operating personnel are after long nozzle is suitable for reading and steel ladle sliding water gap connects, by steel ladle sliding water gap
Slide plate move maximum opening in the form of hydraulic-driven, molten steel can flow out automatically with the whereabouts of stuffing sand（Commonly referred to as
Automatic casting）, completion ladle, which is opened, pours link.But when molten steel can not flow out automatically from ladle, operating personnel must be first by long water
Mouth is removed, and burning oxygen pipe from the collector nozzle insertion of steel ladle sliding water gap afterwards carries out artificial burning oxygen Assist drainage, treats steel stream from the mouth of a river
After outflow, then slide plate shut, connect long nozzle, pull open steel ladle slide board again and cast.This ladle method for pouring is one
The quality opened the method for pouring, directly affect strand that kind is forced, it is impossible to play the effect of protective casting completely.Manually burnt in operating personnel
During oxygen Assist drainage, steel stream can form nonmetallic inclusion with air contact re-oxidation first；Secondly oxygen drainage is burnt
Molten steel by long nozzle, is not sprinkled upon directly on the scum layer in tundish, part scum silica frost is brought into molten steel, and be involved in crystallization
Device forms field trash.If poured in addition, ladle can not be opened voluntarily, the labor intensity of operating personnel is not only increased, to operator
Member brings potential safety hazard, and when being unable to automatic casting, casting machine just must reduction of speed to maintain the continuity of continuous casting working procedure, pulling rate
Fluctuation can have a significant impact to cc billet surface quality, if ladle, which can not be opened to pour for a long time, will result in that continuous casting is disconnected to pour production accident,
Great economic loss is brought to enterprise.So ladle can automatic casting not only have influence on the quality of strand, also affect
The whole efficiency of continuous casting line and the economic benefit of enterprise.Production leadtime it has been found that, Con casting ladle drainage is opened and poured than opening automatically
Pour and averagely waste time as 5min or so, especially because pouring basket liquid level is low or liquid steel temperature reduces excessive, or even the company of causing
Casting machine non-programmed halt, sometimes it also occur that whole Baogang's water, which sends ladle smelting device back to, reheats or freeze bag production accident.Just
Because in this way, ladle is opened to pour increasingly is valued by people.
In steelmaking process, the mechanism for influenceing and realizing ladle automatic casting is：When preparing ladle, by stuffing sand
Pour into inside filling pipe end and at the top of brick cup, form a small steamed bun shape sand-flood, molten steel injects the initial stage of ladle, inserts mouth of a river upper table
The stuffing sand in face sinters rapidly, turns into highly viscous liquid phase layer, hinders molten steel to the infiltration inside stuffing sand.High viscosity
It is sinter layer below liquid phase layer, is loose stuffing sand below sinter layer.Sinter layer can be born under the support of bottom material
The static pressure of molten steel is without destroyed.The characteristics of due to stuffing sand material, heat transfer is relatively slow, and the sintering velocity of stuffing sand also can
Slack-off, sinter layer is maintained at certain thickness, and as liquid steel temperature declines in the mouth of a river, molten steel forms cold steel on bag bottom stuffing sand
Layer.Opened in Con casting ladle slide gate nozzle, open the un-sintered material of bottom when pouring because Gravitative Loads fall, sinter layer loses branch
Support, causes sinter layer to be crushed under the Action of Gravity Field of molten steel, and realization, which is opened, pours.Therefore want to improve ladle self-opening rate, it is necessary to set
Method reduces the ultimate strength of sinter layer or frozen crust, reduces the thickness of " shell ".The measure typically taken at present has：Scene passes through
Make molten steel shock point should the centre distance away from stuffing sand filling position；The composition of stuffing sand is accordingly adjusted according to use condition,
Promote top layer Fast Sintering, prevent from avoiding thickness of the measures such as excess agglomeration reduction sinter layer etc. while stuffing sand from floating, but
With the increase of molten steel standing time, sinter layer and the increase of cold steel layer thickness, above measure can not reach satisfied effect.
In addition, in protective casting technology, closed in steel ladle pouring latter stage selection proper moment control steel ladle sliding water gap,
Terminate the cast of this stove molten steel, it is extremely important to reopen next stove steel ladle pouring.If steel ladle sliding water gap closes later, steel
Clinker containing iron oxide, manganese oxide and silica in bag flows into tundish by long nozzle, can cause the easy oxygen such as aluminium and titanium in molten steel
The scaling loss of chemical combination gold element, and aluminate is produced, the degree of purity of molten steel is influenceed, and ultimately cause the surface quality of product
Problem.Alumina inclusion in molten steel can also cause nozzle blocking, influence the flowing of molten steel in mold and middle continuous cast crystallizer
Number.In order to judge steel ladle pouring terminal, decision means are typically used as by ladle weight change.But due to the company of some steel mills
Casting ladle turret weighing is inaccurate, or cylinder-packing weight constantly changes due to corroding, and the quantity of slag is different under every stove during converter tapping,
The accuracy of these factors influences cast terminal point determining.Some steel mills have to use and remove long nozzle in advance, artificial naked eyes
Observation judges terminal of casting, and in this period molten steel is by serious secondary oxidation.Further, in order to avoid the clinker in ladle enters
Tundish, very strict steel grades are required to purity of steel producing some, some steel mills are stayed using ladle during such as Automobile Plate
Steel operates, although so meeting quality requirement, the recovery rate of molten steel reduces.It is simultaneously traditional to be flowed through according to molten steel and bits
The experiences such as refractory sleeve color difference come judge ladle whether slag method error it is big, because the experience of operative employee is different, have
It is obvious close slide plate ahead of time, some just closes slide plate in obvious slag, and such steel quality fluctuation is greatly.From the labor of operative employee
Dynamic degree of protection sees that the steel stream band slag situation that detects by an unaided eye for a long time can cause the adverse consequences such as visual impairment.
In summary, the molten steel automatic casting ratio deficiency present in casting process, burning oxygen drain two opened in pouring at present
The problems such as secondary oxidation, the accurate clinker judged in steel ladle pouring terminal, ladle enter tundish directly affects molding casting mistake
Cleanliness of Molten Steel in journey, it have impact on the quality of steel production.These problems are not solved effectively for a long time, turn into puzzlement enterprise
Industry and the hard nut to crack of technical staff, it would be highly desirable to solve, to improve the productivity effect of steel product quality and enterprise.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of flow control device for improving Cleanliness of Molten Steel in casting process
And method, this flow control apparatus and method can effectively improve ladle automatic free-opening rate, reach 100%, and reduce ladle not
Secondary oxidation of steel etc. brings the field trash of molten steel into from during oxygen is manually burnt when opening, while can be automatic in steel ladle pouring latter stage
Judge cast terminal, reduce or prevent ladle roughing slag.
Solve above-mentioned technical problem technical scheme be：
The flow control device of Cleanliness of Molten Steel in a kind of raising casting process, it includes filling pipe end, collector nozzle, slide plate, brick cup, and it changes
It is that load coil, Lower proterozoic group main coil and Lower proterozoic group secondary coil, sensing heating line are set inside brick cup to enter part
Circle, Lower proterozoic group main coil and Lower proterozoic group secondary coil are around filling pipe end, load coil, Lower proterozoic group main coil and slag
Detection secondary coil is arranged in order from top to bottom, and load coil is relative with the top of filling pipe end and middle part, Lower proterozoic group main line
Circle is relative with the middle part of filling pipe end, and Lower proterozoic group secondary coil is relative with the bottom of filling pipe end, load coil, Lower proterozoic group master
Coil is connected with AC power respectively, in the circuit of load coil, Lower proterozoic group main coil and Lower proterozoic group secondary coil
In be separately installed with voltage monitor.
The flow control device of Cleanliness of Molten Steel in above-mentioned raising casting process, the Lower proterozoic group main coil are sensing heating line
A part for circle.
The flow control device of Cleanliness of Molten Steel in above-mentioned raising casting process, the load coil, Lower proterozoic group main line
The total length of circle and Lower proterozoic group secondary coil is 200-120mm, coil diameter 250-300mm, the upper end of load coil
It is 180-200mm apart from molten steel bottom surface.
A kind of flow control method for improving Cleanliness of Molten Steel in casting process using above-mentioned flow control device, it uses following step
It is rapid to carry out：
A. the brick cup with load coil, Lower proterozoic group main coil and Lower proterozoic group secondary coil is built into Ladle Bottom, upper
Stuffing sand is inserted in the mouth of a river；
B. when the ladle equipped with molten steel sits on ladle turret, load coil power supply is connected, cast position is gone in ladle
Alternating current is passed to load coil before 2~3min, sensing heating is carried out to cold steel layer at filling pipe end, makes water on ladle bottom
The all or part of rapid fusing of the cold steel layer of mouth；
C. when ladle goes to cast position, long nozzle is covered at collector nozzle, pulls open slide plate, molten steel will flow into stuffing sand
Tundish, complete ladle automatic casting；
D. open pour after the completion of cut off load coil power supply, connect Lower proterozoic group main coil power supply and simultaneously pass to alternating current；
E. according to casting latter stage Lower proterozoic group secondary coil secondary voltage difference judge ladle whether slag, detect under ladle
Slide gate nozzle is closed after slag, completes the casting process of ladle.
Beneficial effects of the present invention are：
The present invention is remarkably improved the automatic casting ratio of ladle, and automatic casting ratio is up to 100%.In traditional method, work as ladle
It is general using the completion tapping of oxygen method is burnt when can not tap automatically, fundamentally, burn the method that oxygen method is fuel combustion heating.
Compared with fuel combustion method, electromagnetic induction heating has the function that same or like, and has the higher efficiency of heating surface, together
When have the advantages that firing rate is fast, heat loss is few, it is nuisanceless, be easy to automatically control.Electromagnetic induction heating is before ladle is opened and poured
Stand-by period complete, do not interfere with rhythm of production.
The achievable steel ladle pouring whole process protection casing protection molten steel of the present invention, and can realize that casting process whole process blows Ar guarantors
Shield, improve Cleanliness of Molten Steel.It is of the invention to be detected using Lower proterozoic group when ladle just starts slag and close the mouth of a river in time, can
Surplus steel is reduced to greatest extent, improves molten steel recovery rate.The present invention can prevent secondary oxidation of steel and slag from entering tundish, because
This can reduce nozzle blocking, extend the life-span of refractory material, and then increase casting sequence.
The present invention is pioneering in molding casting technology, solves the molten steel automatic casting present in casting process at present
Secondary oxidation, the accurate clinker judged in steel ladle pouring terminal, ladle that rate deficiency, burning oxygen drainage are opened in pouring enter tundish etc.
It is long-term do not obtain it is effective solve the problems, such as, the whole process protection casting of steel ladle pouring process truly can be realized, in industry
It is interior that there is fabulous promotion prospect.
Brief description of the drawings
Fig. 1 is the flow control apparatus structure schematic diagram of the present invention.
Marked in figure as follows：Molten steel 1, ladle shell 2, cylinder-packing 3, brick cup 4, filling pipe end 5, slide plate 6, collector nozzle 7, coil 8, draw
Quicksand 9, frozen crust 10, sinter layer 11, load coil 12, Lower proterozoic group main coil 13, Lower proterozoic group secondary coil 14.
Embodiment
Fuel factor of the invention based on Faraday's electromagnetic induction law and electric current, the i.e. sense by being arranged on the outside of filling pipe end
Coil is answered to produce the magnetic field of alternation, conductor can sense in alternating magnetic field to be produced electric current and cause heating to be realized to cold in filling pipe end
The purpose of steel layer heating.Ladle roughing slag detection is the conductance difference according to Faraday's electromagnetic induction law and molten steel and slag,
The conductance of slag is about the 1/1000 of molten steel, therefore molten steel and slag pass through caused inductive electromagnetic intensity from filling pipe end
It is different, this is resulted in when Lower proterozoic group main coil passes to alternating current, slag inspection when molten steel passes through filling pipe end with slag
It is different to survey secondary coil secondary voltage, changes accordingly to detect slag.Because sensing heating is identical with the general principle of Lower proterozoic group,
Therefore a part for present invention load coil substitutes Lower proterozoic group main coil.
Shown in figure, the flow control device for improving Cleanliness of Molten Steel in casting process of the invention includes filling pipe end 5, collector nozzle
7th, slide plate 6, brick cup 4, load coil 12, Lower proterozoic group main coil 13, Lower proterozoic group secondary coil 14.
Load coil 12, Lower proterozoic group main coil 13 and Lower proterozoic group secondary coil 14, sensing are set inside brick cup 4
Heating coil 12, Lower proterozoic group main coil 13 and Lower proterozoic group secondary coil 14 are around filling pipe end 5, load coil 12, slag
Detection main coil 13 and Lower proterozoic group secondary coil 14 are arranged in order from top to bottom, the top of load coil 12 and filling pipe end 5
Relative with middle part, Lower proterozoic group main coil 13 is relative with the middle part of filling pipe end 5, under Lower proterozoic group secondary coil 14 and filling pipe end 5
Portion is relative.
Shown in figure, load coil 12, Lower proterozoic group main coil 13 are connected with AC power respectively, and alternating current leads to
Cross load coil 12 to heat cold steel layer in filling pipe end 5, to ensure ladle automatic free-opening rate.
Shown in figure, because sensing heating is identical with the general principle of Lower proterozoic group, therefore with load coil 12
A part substitutes Lower proterozoic group main coil 13.In load coil 12, Lower proterozoic group main coil 13 and Lower proterozoic group secondary coil
Voltage monitor is separately installed with 14 circuit, when passing through filling pipe end 5 by monitoring molten steel, Lower proterozoic group secondary coil 14
Secondary induction voltage is different, changes accordingly to judge ladle roughing slag.
Shown in figure, the total length of load coil 12, Lower proterozoic group main coil 13 and Lower proterozoic group secondary coil 14 is
200-120mm, coil diameter 250-300mm, the upper end of load coil 12 are 180-200mm apart from molten steel bottom surface.
The flow control method for improving Cleanliness of Molten Steel in casting process of the present invention, it is carried out using following steps：
A. the brick cup 4 with load coil 12, Lower proterozoic group main coil 13 and Lower proterozoic group secondary coil 14 is built into ladle
Bottom, stuffing sand 9 is inserted in filling pipe end 5；
B. when the ladle equipped with molten steel sits on ladle turret, the power supply of load coil 12 is connected, cast is gone in ladle
Alternating current is passed to load coil 12 before 2~3min of position, sensing heating is carried out to cold steel layer at filling pipe end 5, makes Ladle Bottom
The all or part of rapid fusing of the cold steel layer of portion's filling pipe end；
C. when ladle goes to cast position, long nozzle is covered at collector nozzle 7, pulls open slide plate 6, molten steel will flow with stuffing sand 9
Enter tundish, complete ladle automatic casting；
D. open pour after the completion of cut off the power supply of load coil 12, connect the power supply of Lower proterozoic group main coil 13 and simultaneously pass to exchange
Electricity；
E. according to casting the secondary voltage of latter stage Lower proterozoic group secondary coil 14 difference judge ladle whether slag, detect ladle
Slide gate nozzle is closed after slag, completes the casting process of ladle.
Embodiments of the invention are as follows：
Embodiment 1
The structure of flow control device is as shown in figure 1, including brick cup 4, filling pipe end 5, collector nozzle 7, slide plate 6, coil 8 and stuffing sand 9.Its
Coil 8 is fixed in brick cup 4 away from the corresponding position of ladle bottom, its optimized parameter be away from molten steel 200mm at, loop length is
150mm, a diameter of 280mm.
Brick cup 4 with coil 8 is built into Ladle Bottom, before ladle contains molten steel, drawn chromium matter using mechanical loading method
Quicksand 9 adds filling pipe end 5, and it is full to ensure that filling sand is filled with the mouth of a river in place.Molten steel is injected into ladle by converter, ladle passes through afterwards
LF refining technique, refining time is between 70~100min.Refining terminates, and when ladle sits on ladle turret, connects sensing
The power supply of heating coil 12, alternating current is passed to load coil 12 before ladle goes to cast 2~3min of position；When ladle is gone to
When pouring into a mould position, long nozzle is covered at collector nozzle 7, pulls open slide plate 6, molten steel will flow into tundish with stuffing sand 9, and smoothly complete
Tapping.The power supply of load coil 12 is cut off after the completion of tapping, the power supply of Lower proterozoic group main coil 13 is connected and passes to alternating current,
Slide gate nozzle is closed after detecting ladle roughing slag, completes the casting process of ladle.
After the inventive method flow control, 22 bags, ladle automatic free-opening rate 100% are poured into a mould altogether, while steel has subtracted more than ladle
Few, molten steel recovery rate improves.Middle bag-like condition is preferable, and nozzle clogging phenomenon has certain improvement, and adds middle Bao Lian and pour
Stove number.The labor intensity of big package operation work is alleviated simultaneously, improves the working environment of operative employee.
Embodiment 2
Flow control apparatus structure such as embodiment 1, operating method such as embodiment 1, its difference is that molten steel injects ladle by converter
Afterwards, ladle passes through LF+RH refinery practices, and refining time is in 100~150min.
After the inventive method flow control, 59 bags, ladle automatic free-opening rate 100% are poured into a mould altogether；Steel has subtracted more than ladle simultaneously
Few, molten steel recovery rate improves.Middle bag-like condition is preferable, and nozzle clogging phenomenon has certain improvement, and adds middle Bao Lian and pour
Stove number.The labor intensity of big package operation work is alleviated simultaneously, improves the working environment of operative employee.This method for production direct motion and
The raising of slab quality creates good condition.
Claims (4)
1. a kind of flow control device for improving Cleanliness of Molten Steel in casting process, it includes filling pipe end（5）, collector nozzle（7）, slide plate
（6）, brick cup（4）, it is characterised in that：In brick cup（4）Inside sets load coil（12）, Lower proterozoic group main coil（13）With
Lower proterozoic group secondary coil（14）, load coil（12）, Lower proterozoic group main coil（13）With Lower proterozoic group secondary coil（14）Ring
Around filling pipe end（5）, load coil（12）, Lower proterozoic group main coil（13）With Lower proterozoic group secondary coil（14）From top to bottom according to
Secondary arrangement, load coil（12）With filling pipe end（5）Top and middle part it is relative, Lower proterozoic group main coil（13）With filling pipe end
（5）Middle part it is relative, Lower proterozoic group secondary coil（14）With filling pipe end（5）Bottom it is relative, load coil（12）, slag inspection
Survey main coil（13）It is connected respectively with AC power, in load coil（12）, Lower proterozoic group main coil（13）And slag
Detect secondary coil（14）Circuit in be separately installed with voltage monitor.
2. the flow control device according to claim 1 for improving Cleanliness of Molten Steel in casting process, it is characterised in that：Under described
Slag detects main coil（13）For load coil（12）A part.
3. the flow control device according to claim 2 for improving Cleanliness of Molten Steel in casting process, it is characterised in that：The sense
Answer heating coil（12）, Lower proterozoic group main coil（13）With Lower proterozoic group secondary coil（14）Total length be 200-120mm, coil
A diameter of 250-300mm, load coil（12）Upper end apart from molten steel bottom surface be 180-200mm.
A kind of 4. flow control method for improving Cleanliness of Molten Steel in casting process using above-mentioned flow control device, it is characterised in that：It
Carried out using following steps：
A. load coil will be carried（12）, Lower proterozoic group main coil（13）With Lower proterozoic group secondary coil（14）Brick cup（4）
Build into Ladle Bottom, in filling pipe end（5）In insert stuffing sand（9）；
B. when the ladle equipped with molten steel sits on ladle turret, load coil is connected（12）Power supply, go to and pour in ladle
Load coil is given before note 2~3min of position（）Alternating current is passed to, to filling pipe end（5）Locate cold steel layer and carry out sensing heating, make steel
Wrap bottom filling pipe end（5）The all or part of rapid fusing of cold steel layer；
C. when ladle goes to cast position, in collector nozzle（5）Place puts long nozzle, pulls open slide plate（6）, molten steel will be with drainage
Sand（9）Tundish is flowed into, completes ladle automatic casting；
D. open pour after the completion of cut off load coil（12）Power supply, connect Lower proterozoic group main coil（13）Power supply simultaneously passes to
Alternating current；
E. according to casting latter stage Lower proterozoic group secondary coil（14）Secondary voltage difference judge ladle whether slag, detect steel
Slide gate nozzle is closed after bag slag, completes the casting process of ladle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710666835.4A CN107363252A (en) | 2017-08-07 | 2017-08-07 | The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process |
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| CN201710666835.4A CN107363252A (en) | 2017-08-07 | 2017-08-07 | The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555273A (en) * | 2018-06-04 | 2018-09-21 | 东北大学 | A kind of method that bottom blowing inert gas improves ladle self-opening rate |
| CN111451467A (en) * | 2020-04-20 | 2020-07-28 | 马鞍山钢铁股份有限公司 | Continuous casting ladle pouring state monitoring system and monitoring method |
| CN112808990A (en) * | 2020-12-28 | 2021-05-18 | 河北工业职业技术学院 | Ladle drainage method |
| CN114918410A (en) * | 2022-04-15 | 2022-08-19 | 鞍山钢铁冶金炉材科技有限公司 | Drainage sand sintered layer crevasse method and device |
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