CN105964998B - A kind of method and device of continuous casting production argon filling - Google Patents
A kind of method and device of continuous casting production argon filling Download PDFInfo
- Publication number
- CN105964998B CN105964998B CN201610341800.9A CN201610341800A CN105964998B CN 105964998 B CN105964998 B CN 105964998B CN 201610341800 A CN201610341800 A CN 201610341800A CN 105964998 B CN105964998 B CN 105964998B
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- China
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- closure mechanism
- argon
- sheet metal
- tundish
- accommodating space
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Classifications
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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
-
- 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
- B22D41/50—Pouring-nozzles
- B22D41/58—Pouring-nozzles with gas injecting means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of method and devices of continuous casting production argon filling, belong to steel-making continuous casting technical field.The device of the continuous casting production argon filling includes：First closure mechanism is arranged in tundish, and the first closure mechanism is arranged between the first stopper hole of pouring basket lid and plug hole, and several holes are offered below the first closure mechanism；Second closure mechanism is arranged in tundish, and the second closure mechanism is arranged between the second stopper hole of pouring basket lid and plug hole, and several holes are offered below the second closure mechanism；Argon filling pipeline is arranged in the pouring basket lid, and argon filling pipeline is provided with several argon blowing holes.The method and device of continuous casting production argon filling of the present invention reduces the amount of being blown into of argon gas, improves the efficiency of argon filling, reduces the soakage of outside air, reach reduce secondary oxidation of steel set objective, so as to get quality of primary blank Comprehensive Control it is better.
Description
Technical field
The present invention relates to steel-making continuous casting technical field, more particularly to a kind of method and device of continuous casting production argon filling.
Background technology
Tundish is the intermediate receptacle between ladle and crystallizer in metallurgy industry continuous casting.It is unwrapped in centre before pouring,
Air is filled in tundish, head stove molten steel secondary oxidation in casting process is serious, affects the cleanliness factor of strand, easily makes
Surface occur into the 2nd block of head base, head stove slab even coil of strip for being rolled of the 3rd block of slab of head stove, to be mingled with probability higher.Certain steel mill
Sampling analysis is carried out to the cleanliness factor of unsteady statecalculation slab, it is the 1.88 of whole average value that total oxygen content value when pouring is opened in discovery
Times, it is ensured that the stability of product quality, it is necessary to be optimized to the continuous casting process of continuous casting A-stage.In order to improve a base
Cleanliness factor, the general operation using tundish sealing argon filling carry out inert gas replacement so that intermediate to the atmosphere in tundish
Oxygen content ＜ 0.1% in bag.
The quality of tundish argon filling effect depends on the leakproofness of tundish, and currently used tundish cover is typically recessed
Stopper hole, baking hole and plug hole, wherein due to there is the presence of stopper device, gap is smaller in stopper hole, and leakproofness is preferable；Baking
Hole usually may be employed refractory brick covering and be sealed since its diameter dimension is little；And plug hole is since its diameter is big, and
Changing long nozzle in packet procedures needs to move, therefore, it is difficult to be sealed to it, so as to cause a large amount of air-breathings of molten steel, and then molten steel two
Secondary oxidation, finally influences slab quality.
The content of the invention
The present invention provides a kind of method and device of continuous casting production argon filling, solves or part solves in the prior art
Plug hole changes long nozzle in packet procedures and needs to move since its diameter is big, therefore, it is difficult to be sealed to it, so as to cause
The a large amount of air-breathings of molten steel, and then molten steel secondary oxidation, final the technical issues of influencing slab quality.
To comprise the following steps in order to solve the above technical problems, the present invention provides a kind of methods of continuous casting production argon filling：
Before cast is started, the first closure mechanism and the second closure mechanism are set in the tundish, first closure mechanism is set
It puts between the first stopper hole of pouring basket lid and plug hole, second closure mechanism is arranged on the second of the pouring basket lid
Between stopper hole and plug hole, first closure mechanism, second closure mechanism and pouring basket lid form an accommodating space；
Several holes are opened up below first closure mechanism and second closure mechanism；Argon filling is arranged in the pouring basket lid
Pipeline, the argon filling pipeline are provided with several argon blowing holes；The argon blowing hole is arranged on above the accommodating space, to described
Accommodating space carries out slow Argon, and the argon gas in the accommodating space passes through first closure mechanism and the described second closed machine
Several holes are opened up below structure into the part beyond accommodating space in the tundish, until the centre unwraps and pours stabilization.
Further, first closure mechanism includes the first sheet metal, and first sheet metal is arranged on the centre
In bag, first sheet metal is arranged between the first stopper hole of the pouring basket lid and plug hole；The second closed machine
Structure includes the second sheet metal, and second sheet metal is arranged in the tundish, second sheet metal be arranged on it is described in
Between backpack cover the second stopper hole and plug hole between.
Further, the size of first sheet metal and second sheet metal and the size phase of the tundish
Match somebody with somebody.
Further, first sheet metal below second sheet metal with offering several holes.
Further, described that argon filling pipeline is arranged on the pouring basket lid, the argon filling pipeline is provided with several and blows
Argon mouth includes：The number of the argon blowing hole is no less than three.
Further, it is described that the argon blowing hole is arranged on above the accommodating space, the accommodating space is delayed
Slow Argon includes：The argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume.
Based on identical inventive concept, the present invention also provides a kind of device of continuous casting production argon filling, on the tundish
Side is provided with pouring basket lid, and the first stopper hole, the second stopper hole and plug hole are offered on the pouring basket lid；The argon filling
Device includes：First closure mechanism is arranged in the tundish, and first closure mechanism is arranged on the pouring basket lid
Between first stopper hole and plug hole, several holes are offered below first closure mechanism；Second closure mechanism is arranged on institute
It states in tundish, second closure mechanism is arranged between the second stopper hole of the pouring basket lid and plug hole, and described
Several holes are offered below two closure mechanisms；Argon filling pipeline is arranged in the pouring basket lid, if the argon filling pipeline is provided with
Dry argon blowing hole；Wherein, first closure mechanism, second closure mechanism and pouring basket lid form an accommodating space, institute
It states argon blowing hole to be arranged on above the accommodating space, carries out slow Argon to the accommodating space, the argon in the accommodating space
Gas is by opening up several holes into housing in the tundish below first closure mechanism and second closure mechanism
Part beyond space, until the centre unwraps and pours stabilization.
Further, first closure mechanism includes the first sheet metal, and first sheet metal is arranged on the centre
In bag, first sheet metal is arranged between the first stopper hole of the pouring basket lid and plug hole, first sheet metal
Lower section offer several holes, the size and the size of the tundish of first sheet metal match；Described second is closed
Mechanism includes the second sheet metal, and second sheet metal is arranged in the tundish, and second sheet metal is arranged on described
Between second stopper hole of pouring basket lid and plug hole, several holes are offered below second sheet metal, described second is thin
The size of steel plate and the size of the tundish match.
Further, the number of the argon blowing hole is no less than three.
Further, the argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume.
The method of continuous casting production argon filling provided by the invention sets the first closed machine before cast is started in tundish
Structure and the second closure mechanism, the first closure mechanism are arranged between the first stopper hole of pouring basket lid and plug hole, and second is closed
Mechanism is arranged between the second stopper hole of pouring basket lid and plug hole, the first closure mechanism, the second closure mechanism and tundish
Cap-shaped ensure that the leakproofness of accommodating space, opened below the first closure mechanism with the second closure mechanism into an accommodating space
If several holes, argon filling pipeline is arranged in pouring basket lid, argon filling pipeline is provided with several argon blowing holes, argon blowing hole is arranged on appearance
Space above is put, slow Argon is carried out to accommodating space, using multiple branch circuit, the mode of small flow not only reduces being blown into for argon gas
Amount improves the efficiency of argon filling, can also reduce the soakage of outside air, reaches the set objective for reducing secondary oxidation of steel,
Argon gas in accommodating space enters tundish content by opening up several holes below the first closure mechanism and the second closure mechanism
Part beyond between emptying, until centre unwraps and pours stabilization, so as to get quality of primary blank Comprehensive Control it is better.
Description of the drawings
Fig. 1 is the flow diagram of the method for continuous casting production argon filling provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of tundish cover provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of tundish provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of the first closure mechanism provided in an embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of method of continuous casting production argon filling provided in an embodiment of the present invention comprises the following steps：
Step 1, before cast is started, the first closure mechanism 6 and the second closure mechanism 7, institute are set in the tundish 5
It states the first closure mechanism 6 to be arranged between the first stopper hole 3 of pouring basket lid 1 and plug hole 2, second closure mechanism 7 is set
It puts between the second stopper hole 4 of the pouring basket lid 1 and plug hole 2, first closure mechanism 6, the second closed machine
Structure 7 forms an accommodating space with pouring basket lid 1.
Step 2, several holes are opened up in the lower section of first closure mechanism 6 and second closure mechanism 7.
Step 3, arrangement argon filling pipeline, the argon filling pipeline are provided with several argon blowing holes in the pouring basket lid 1.
Step 4, the argon blowing hole is arranged on above the accommodating space, slow Argon is carried out to the accommodating space,
Argon gas in the accommodating space opens up several holes by the lower section of first closure mechanism 6 and second closure mechanism 7
Part in into the tundish 5 beyond accommodating space, until the tundish 5 is opened and pours stabilization.
The structure of the first closure mechanism 6 and the second closure mechanism 7 is discussed in detail.
First closure mechanism 6 includes the first sheet metal 6-1.The first sheet metal 6-1 be fixed at it is described in
Between bag 5 in.Specifically, in the present embodiment, the first sheet metal 6-1, which is bolted, is arranged on the tundish 5
Interior, in other embodiments, the first sheet metal 6-1 can such as welding be fixed at the centre otherwise
In bag 5.The first sheet metal 6-1 is arranged between the first stopper hole 3 of the pouring basket lid 1 and plug hole 2.
Second closure mechanism 7 includes the second sheet metal 7-1.The second sheet metal 7-1 be fixed at it is described in
Between bag 5 in.Specifically, in the present embodiment, the second sheet metal 7-1, which is bolted, is arranged on the tundish 5
Interior, in other embodiments, the second sheet metal 7-1 can such as welding be fixed at the centre otherwise
In bag 5.The second sheet metal 7-1 is arranged between the second stopper hole 4 of the pouring basket lid 1 and plug hole 2.
The size and the size of the tundish 5 of the first sheet metal 6-1 and the second sheet metal 7-1 match.
Several holes are offered below the first sheet metal 6-1 and the second sheet metal 7-1, enter institute convenient for argon gas
The part beyond accommodating space in tundish 5 is stated, argon gas is made to be sufficiently displaced from the atmosphere in tundish 5.
Step 3 is discussed in detail.
Described that argon filling pipeline is arranged on the pouring basket lid, the argon filling pipeline, which is provided with several argon blowing holes, to be included：
The number of the argon blowing hole is no less than three, forms multiple branch circuit form.
Step 4 is discussed in detail.
It is described that the argon blowing hole is arranged on above the accommodating space, slow Argon bag is carried out to the accommodating space
It includes：The argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume, can sufficiently with it is described
Atmosphere in tundish 5 makes argon gas be full of tundish into line replacement.
Referring to Fig. 2-4, based on identical inventive concept, the present invention also provides a kind of device of continuous casting production argon filling, institutes
It states 5 top of tundish and is provided with pouring basket lid 1, the first stopper hole 3, the second stopper hole 4 are offered on the pouring basket lid 1 and is poured
Orifice 2；It is characterized in that, the device of the argon filling includes：First closure mechanism 6, the second closure mechanism 7 and argon filling pipeline.
First closure mechanism 6 is arranged in the tundish 5, and first closure mechanism 6 is arranged on the centre
Between first stopper hole 3 of backpack cover 1 and plug hole 2,6 lower section of the first closure mechanism offers several holes.
Second closure mechanism 7 is arranged in the tundish 5, and second closure mechanism 7 is arranged on the centre
Between second stopper hole 4 of backpack cover 1 and plug hole 2,7 lower section of the second closure mechanism offers several holes.
The argon filling pipeline is arranged in the pouring basket lid 1, and the argon filling pipeline is provided with several argon blowing holes.
Wherein, first closure mechanism 6, second closure mechanism 7 and pouring basket lid 1 form an accommodating space, institute
It states argon blowing hole to be arranged on above the accommodating space, carries out slow Argon to the accommodating space, the argon in the accommodating space
Gas opens up several holes into 5 content of tundish by the lower section of first closure mechanism 6 and second closure mechanism 7
Part beyond between emptying, until the tundish 5 is opened and pours stabilization.
The first closure mechanism and the second closure mechanism is discussed in detail.
First closure mechanism 6 includes the first sheet metal 6-1.The first sheet metal 6-1 be fixed at it is described in
Between bag 5 in.Specifically, in the present embodiment, the first sheet metal 6-1, which is bolted, is arranged on the tundish 5
Interior, in other embodiments, the first sheet metal 6-1 can such as welding be fixed at the centre otherwise
In bag 5.The first sheet metal 6-1 is arranged between the first stopper hole 3 of the pouring basket lid 1 and plug hole 2, and described first
Several holes are offered below sheet metal 6-1, convenient for argon gas into the part beyond accommodating space in the tundish 5, make argon
Gas is sufficiently displaced from the atmosphere in tundish 5.The size and the size of the tundish 5 of the first sheet metal 6-1 matches.
Second closure mechanism 7 includes the second sheet metal 7-1.The second sheet metal 7-1 is arranged on the tundish 5
It is interior.Specifically, in the present embodiment, the second sheet metal 7-1, which is bolted, is arranged in the tundish 5,
In other embodiment, the second sheet metal 7-1 can otherwise welding be fixed at as described in tundish 5
It is interior.The second sheet metal 7-1 is arranged between the second stopper hole 4 of the pouring basket lid 5 and plug hole 2, and described second is thin
Several holes are offered below steel plate 7-1, convenient for argon gas into the part beyond accommodating space in the tundish 5, make argon gas
It is sufficiently displaced from the atmosphere in tundish 5.The size and the size of the tundish 5 of the second sheet metal 7-1 matches.
The structure of argon blowing hole is discussed in detail.
The number of the argon blowing hole is no less than three, forms multiple branch circuit form.
Argon filling situation in accommodating space is discussed in detail.
The argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume, can sufficiently with
Atmosphere in the tundish 5 makes argon gas be full of tundish into line replacement.
The embodiment of the present invention is introduced in order to clearer, is introduced below from the application method of the embodiment of the present invention.
The first sheet metal 6-1 is inserted between the 2 and first stopper hole 3 of plug hole of pouring basket lid 1, in pouring basket lid 1
The size of the first sheet metal 7-1, the first sheet metal 6-1 and the second sheet metal 7-1 is inserted between 2 and second stopper hole 4 of plug hole
Match with the size of tundish 5.First sheet metal 6-1 and the second sheet metal 7-1 can form an accommodating sky with pouring basket lid 1
Between, accommodating space is relatively closed, ensure that the leakproofness of the accommodating space at plug hole 2, and the volume of accommodating space is denoted as V.The
It needs to bore several apertures before one sheet metal 6-1 and the second sheet metal 7-1 insertions, in the first sheet metal 6-1 and the second sheet metal 7-1
Middle and lower part in 3 row's random distributions, convenient for argon gas into the part beyond accommodating space in the tundish 5, make argon gas in
Between bag 5 in atmosphere be sufficiently displaced from.Arrangement argon filling pipeline, 4 argon blowing holes of argon filling pipeline are arranged on centre in pouring basket lid 1
On backpack cover 1 between first sheet metal 6-1 and the second sheet metal 7-1, using multiple branch circuit, the principle of small flow, centering
Between bag in slowly implement Argon, not only reduce argon gas the amount of being blown into, improve the efficiency of argon filling, the suction of outside air can also be reduced
Enter amount, reach the set objective for reducing secondary oxidation of steel, the total argon flow amount being filled with is 3.5*V, makes argon gas and tundish 5
Interior atmosphere is sufficiently displaced from, until centre unwraps and pours stabilization, so as to get quality of primary blank Comprehensive Control it is better.
It should be noted last that more than specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention, should all cover
Among scope of the presently claimed invention.
Claims (9)
- A kind of 1. method of continuous casting production argon filling, which is characterized in that comprise the following steps：Before cast is started, the first closure mechanism (6) and the second closure mechanism (7) be set in the tundish (5), described the One closure mechanism (6) is arranged between the first stopper hole (3) of pouring basket lid (1) and plug hole (2), second closure mechanism (7) it is arranged between the second stopper hole (4) of the pouring basket lid (1) and plug hole (2), first closure mechanism (6), institute It states the second closure mechanism (7) and forms an accommodating space with pouring basket lid (1)；Several holes are opened up below first closure mechanism (6) and second closure mechanism (7)；Arrangement argon filling pipeline, the argon filling pipeline are provided with several argon blowing holes, the argon blowing hole in the pouring basket lid (1) Number be no less than three；The argon blowing hole is arranged on above the accommodating space, slow Argon, the accommodating sky are carried out to the accommodating space Interior argon gas enters institute by opening up several holes below first closure mechanism (6) and second closure mechanism (7) The part beyond tundish (5) interior accommodating space is stated, until the tundish (5) is opened and pours stabilization.
- 2. the method for argon filling according to claim 1, it is characterised in that：First closure mechanism (6) includes the first sheet metal (6-1), and first sheet metal (6-1) is arranged on the centre Wrap in (5), first sheet metal (6-1) be arranged on the first stopper hole (3) of the pouring basket lid (1) and plug hole (2) it Between；Second closure mechanism (7) includes the second sheet metal (7-1), and second sheet metal (7-1) is arranged on the centre Wrap in (5), second sheet metal (7-1) be arranged on the second stopper hole (4) of the pouring basket lid (1) and plug hole (2) it Between.
- 3. the method for argon filling according to claim 2, it is characterised in that：First sheet metal (6-1) and the size of second sheet metal (7-1) and the size phase of the tundish (5) Match somebody with somebody.
- 4. the method for argon filling according to claim 2, it is characterised in that：First sheet metal (6-1) below second sheet metal (7-1) with offering several holes.
- 5. the method for argon filling according to claim 1, which is characterized in that described that the argon blowing hole is arranged on the accommodating sky Between top, carrying out slow Argon to the accommodating space includes：The argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume.
- 6. a kind of device of continuous casting production argon filling, tundish (5) top is provided with pouring basket lid (1), the tundish The first stopper hole (3), the second stopper hole (4) and plug hole (2) are offered on lid (1)；It is characterized in that, the device of the argon filling Including：First closure mechanism (6) is arranged in the tundish (5), and first closure mechanism (6) is arranged on the tundish It covers between the first stopper hole (3) of (1) and plug hole (2), several holes is offered below first closure mechanism (6)；Second closure mechanism (7) is arranged in the tundish (5), and second closure mechanism (7) is arranged on the tundish It covers between the second stopper hole (4) of (1) and plug hole (2), several holes is offered below second closure mechanism (7)；Argon filling pipeline is arranged in the pouring basket lid (1), and the argon filling pipeline is provided with several argon blowing holes；Wherein, first closure mechanism (6), second closure mechanism (7) and pouring basket lid (1) form an accommodating space, The argon blowing hole is arranged on above the accommodating space, carries out slow Argon to the accommodating space, in the accommodating space Argon gas is by opening up several holes into the centre below first closure mechanism (6) and second closure mechanism (7) The part beyond (5) interior accommodating space is wrapped, until the tundish (5) is opened and pours stabilization.
- 7. the device of argon filling according to claim 6, it is characterised in that：First closure mechanism (6) includes the first sheet metal (6-1), and first sheet metal (6-1) is arranged on the centre Wrap in (5), first sheet metal (6-1) be arranged on the first stopper hole (3) of the pouring basket lid (1) and plug hole (2) it Between, several holes, the size of first sheet metal (6-1) and the centre are offered below first sheet metal (6-1) The size of bag (5) matches；Second closure mechanism (7) includes the second sheet metal (7-1), and second sheet metal (7-1) is arranged on the centre Wrap in (5), second sheet metal (7-1) be arranged on the second stopper hole (4) of the pouring basket lid (5) and plug hole (2) it Between, several holes, the size of second sheet metal (7-1) and the centre are offered below second sheet metal (7-1) The size of bag (5) matches.
- 8. the device of argon filling according to claim 6, it is characterised in that：The number of the argon blowing hole is no less than three.
- 9. argon-filling device according to claim 6, it is characterised in that：The argon flow amount being filled in the accommodating space is more than the three times of the accommodating space volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341800.9A CN105964998B (en) | 2016-05-20 | 2016-05-20 | A kind of method and device of continuous casting production argon filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341800.9A CN105964998B (en) | 2016-05-20 | 2016-05-20 | A kind of method and device of continuous casting production argon filling |
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| Publication Number | Publication Date |
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| CN105964998A CN105964998A (en) | 2016-09-28 |
| CN105964998B true CN105964998B (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610341800.9A Active CN105964998B (en) | 2016-05-20 | 2016-05-20 | A kind of method and device of continuous casting production argon filling |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110918971A (en) * | 2019-11-11 | 2020-03-27 | 张家港宏昌钢板有限公司 | Novel tundish argon blowing device |
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| KR20100008953A (en) * | 2008-07-17 | 2010-01-27 | 주식회사 포스코 | Continuous casting machine for tundish |
| CN201603865U (en) * | 2010-02-23 | 2010-10-13 | 宝山钢铁股份有限公司 | T type tundish adopting flow control device in form of 'two retaining walls and two retaining dams' |
| CN201693164U (en) * | 2010-06-07 | 2011-01-05 | 鞍钢股份有限公司 | Tundish dam with blowing function |
| CN201760586U (en) * | 2010-06-09 | 2011-03-16 | 鞍山市量子炉材集团有限公司 | Argon-blowing slag dam of continuous casting tundish |
| CN103240406A (en) * | 2013-04-28 | 2013-08-14 | 首钢总公司 | Continuous casting tundish and continuous casting tundish casting control method |
| CN103949628A (en) * | 2014-04-30 | 2014-07-30 | 北京科技大学 | Device and method for eradicating secondary oxidation of tundish during continuous casting |
-
2016
- 2016-05-20 CN CN201610341800.9A patent/CN105964998B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100008953A (en) * | 2008-07-17 | 2010-01-27 | 주식회사 포스코 | Continuous casting machine for tundish |
| CN201603865U (en) * | 2010-02-23 | 2010-10-13 | 宝山钢铁股份有限公司 | T type tundish adopting flow control device in form of 'two retaining walls and two retaining dams' |
| CN201693164U (en) * | 2010-06-07 | 2011-01-05 | 鞍钢股份有限公司 | Tundish dam with blowing function |
| CN201760586U (en) * | 2010-06-09 | 2011-03-16 | 鞍山市量子炉材集团有限公司 | Argon-blowing slag dam of continuous casting tundish |
| CN103240406A (en) * | 2013-04-28 | 2013-08-14 | 首钢总公司 | Continuous casting tundish and continuous casting tundish casting control method |
| CN103949628A (en) * | 2014-04-30 | 2014-07-30 | 北京科技大学 | Device and method for eradicating secondary oxidation of tundish during continuous casting |
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| CN105964998A (en) | 2016-09-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant before: Capital Iron & Steel General Company |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |