CN106270433B - The continuous casting system and method for side concave slab - Google Patents
The continuous casting system and method for side concave slab Download PDFInfo
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- CN106270433B CN106270433B CN201610796688.8A CN201610796688A CN106270433B CN 106270433 B CN106270433 B CN 106270433B CN 201610796688 A CN201610796688 A CN 201610796688A CN 106270433 B CN106270433 B CN 106270433B
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- opposite side
- deflector roll
- side deflector
- roll
- continuous casting
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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
- B22D11/14—Plants for continuous casting
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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
- B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
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- Engineering & Computer Science (AREA)
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- Continuous Casting (AREA)
Abstract
The present invention discloses a kind of continuous casting system and method for side concave slab, and system includes continuous cast mold and lateral guide roller set；Lateral guide roller set includes the first opposite side deflector roll, the second opposite side deflector roll and third opposite side deflector roll, and two side deflector rolls that three is included are located at the two sides below the outlet at bottom of continuous cast mold；First opposite side deflector roll, the second opposite side deflector roll and third opposite side deflector roll are from the outlet at bottom of continuous cast mold successively to the arranged beneath of continuous cast mold；The roll surface of first opposite side deflector roll is located on same guide surface with the surface of the narrow copper plate of corresponding continuous cast mold；The center for two side deflector rolls that first opposite side deflector roll includes is located in the same horizontal plane；The roll surface of second opposite side deflector roll deviates 0-0.7mm compared to the roll surface of the first opposite side deflector roll inwardly；The roll surface of third opposite side deflector roll is offset inward 0-1.0mm compared to the roll surface of the corresponding side of the second opposite side deflector roll.Above scheme can solve side concave slab and be formed by the problem of lumber recovery is lower, higher operating costs of hot rolled coil steel.
Description
Technical field
The present invention relates to the continuous casting systems and side of iron and steel smelting technology field more particularly to a kind of side concave slab
Method.
Background technique
Continuous casting is the casting of liquid steel conticaster, condensation, the technique cut and then directly obtain slab, and continuous casting is connection
The intermediate link of steel-making and steel rolling, is the important component of steel sheet production line.Continuous casting process slab produced is according to transversal
The difference of face shape can be divided into slab, square billet, round billet, shaped blank etc..
In general, sheet billet continuous casting technique slab cross section produced is rectangle, the narrow side of slab is substantially planar.But
This slab can form one or more " black line " at away from hot rolling flanging part 5-20mm when passing through subsequent rolling mill practice, this
Seriously affect the subsequent use of slab.User needs to cut off the slab edge containing " black line " when using slab, this meeting
Cause serious waste.In order to solve this problem, continuous casting plant passes through multiple process modification, but is proximate to " black line " at slab edge
Still it is difficult to eliminate, away from the position between slab edge there is still a need for excision, still influence user is used in this black line region
Lumber recovery and use cost.
In order to improve steel utilization ratio of the slab after rolling, reduce the quantity of material in region between black line and slab edge
Undoubtedly a kind of effective method.(Authorization Notice No. is for this purpose, Chinese utility model patent " a kind of continuous casting crystallizer for plate billet "
CN204997018U a kind of continuous cast mold that can produce side concave slab, during continuous casting, energy) are provided
So that the narrow side of slab is inner concave shape structure, to form side concave slab.This slab is since narrow side is inner concave, through heat
After rolling process, edge " black line " can be reduced away from the distance between hot rolling roll edges, when in use, user needs to cut such hot rolled coil
The quantity of material at the position removed is less, can improve the lumber recovery of steel, while can also reduce the use cost of user.
But above-mentioned side concave slab is formed by steel and still has that lumber recovery is lower, and customer using cost is higher
How problem further decreases the use cost of user, while can improve the lumber recovery that side concave slab is formed by steel, is
Those skilled in the art's technical problem urgently to be resolved at present.
Summary of the invention
In view of this, the present invention discloses a kind of continuous casting system and method for side concave slab, further to solve mesh
The problem of lumber recovery that front side concave slab is formed by steel is lower, the higher operating costs of user.
In order to solve the above technical problems, the present invention is disclosed directly below technical solution:
The continuous casting system of side concave slab, including continuous cast mold and lateral guide roller set；Wherein, lateral guide roller set packet
Include the first opposite side deflector roll, the second opposite side deflector roll and third opposite side deflector roll, first opposite side deflector roll, second opposite side deflector roll and
Two side deflector rolls that third opposite side deflector roll is included are located at the two sides of the outlet at bottom of the continuous cast mold；
The outlet at bottom of first opposite side deflector roll, second opposite side deflector roll and third opposite side deflector roll from the continuous cast mold
Successively to the arranged beneath of the continuous cast mold；
The continuous cast mold includes narrow copper plate and wide face copper sheet, and the narrow copper plate and the wide face copper sheet are formed and used
In the accommodating chamber for accommodating molten steel；The surface that the narrow copper plate is used to contact with the molten steel is provided with convex block, the convex block
Transversal cross-section shape is arc；The marginal surface of the convex block is connect with the base surface of the narrow copper plate by transition face, institute
State the plane tangent of transition face Yu the convex block；
The roll surface of first opposite side deflector roll is located on same guide surface with the surface of the corresponding narrow copper plate；Institute
The center for stating two that the first opposite side deflector roll the is included side deflector rolls is located in the same horizontal plane；
Compared to the roll surface of first opposite side deflector roll, offset distance is greater than the roll surface of second opposite side deflector roll inwardly
0mm and be less than or equal to 0.7mm；
The roll surface of third opposite side deflector roll is offset inward compared to the roll surface of the corresponding side of second opposite side deflector roll
Distance is greater than 0mm and is less than or equal to 1.0mm.
Preferably, 2 in above-mentioned continuous casting line, continuous casting system according to claim 1, which is characterized in that
It further include the 4th opposite side deflector roll, the 4th opposite side deflector roll is located at the lower section of third opposite side deflector roll, and the 4th opposite side
The roll surface of deflector roll deviates 0-1.5mm compared to the roll surface of the third opposite side corresponding side of deflector roll inwardly.
Preferably, in above-mentioned continuous casting system, the side deflector roll positioned at bottom goes out away from the bottom of the continuous cast mold
The distance of mouth is 30mm-200mm.
Based on above-mentioned production system, a kind of continuous casting producing method of side concave slab, the life is also disclosed in the embodiment of the present invention
Production method is completed using as above any continuous casting system, in which:
Opened from continuous casting be poured onto starting throwing time be 50s-200s；Pouring slag additional amount is 0-10Kg；Continuous casting sprue
Insertion depth is 50mm-250mm；The taper of the continuous cast mold is 0.5-1.5%, the cooling water flow of the narrow copper plate
For 200-700L/min, the cooling water flow of all side deflector rolls is 30-200 times of Casting speed.
The continuous casting system of concave slab in side disclosed by the invention has the beneficial effect that:
The structure of the narrow copper plate of continuous cast mold is implemented to improve and makes it have convex block, enters continuous cast mold in molten steel
It is middle crystallized during the structure of convex block can form the side-facing depressions of side concave slab, with the progress of continuous casting, slab exists
It is discharged under the guiding role of lateral guide roller set from the outlet at bottom of continuous cast mold, with cooling gradually, the hardness of slab is got over
Come bigger, the present invention uses and by the intilted mode of opposite side deflector roll increases the guiding force to the slab being gradually hardened, and is conducive to
The side of slab leptoprosopy is recessed into type, on the exposure basis of continuous cast mold, further promotes the side of slab to be recessed into type dynamics, makes
The recessed amount in side of slab further increases, the side invagination that the further increasing of the recessed amount in side is equivalent to slab is deeper, can be further
Quantity of material after reduction hot rolling between the black line and side margins of steel, therefore can further solve current side concave slab institute shape
At steel lumber recovery it is lower, the problem of the higher operating costs of user.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly or in background technique, below will be to embodiment or back
Attached drawing needed in scape technical description is briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the arrangement signal of the lateral guide roller set of the continuous casting system of concave slab in side disclosed by the embodiments of the present invention
Figure；
Fig. 2 is the structural schematic diagram of side deflector roll；
The structural representation of the continuous cast mold of the continuous casting system of Fig. 3 concave slab in side disclosed by the embodiments of the present invention
Figure；
Fig. 4 is the top view of the narrow copper plate of concave slab in side disclosed by the embodiments of the present invention.
Description of symbols:
The first opposite side 11- deflector roll, the second opposite side 12- deflector roll, 13- third opposite side deflector roll；
21- narrow copper plate, 211- convex block, the face 22- wide copper sheet, 23- leptoprosopy cooling device, the face 24- wide cooling device.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work, all should belong to guarantor of the present invention
The range of shield.
The embodiment of the present invention discloses a kind of continuous casting system of side concave slab.The continuous casting of disclosed side concave slab
Production system includes continuous cast mold (as shown in Figure 3) and lateral guide roller set (as shown in Figure 1), with existing continuous casting system
Identical, lateral guide roller set is arranged in the lower section of the outlet at bottom of continuous cast mold, implements guiding for the slab to continuous casting
It is mobile.
Referring to FIG. 1, in the present embodiment, lateral guide roller set includes the first opposite side deflector roll 11, the second opposite side deflector roll 12 and the
Three opposite side deflector rolls 13.Two sides that first opposite side deflector roll 11, the second opposite side deflector roll 12 and third opposite side deflector roll 13 are included
Deflector roll is located at the two sides below the outlet at bottom of continuous cast mold.First opposite side deflector roll 11, the second opposite side deflector roll 12 and
Three opposite side deflector rolls 13 are from the outlet at bottom of the continuous cast mold successively to the lower section parallel arranged of continuous cast mold.
Referring to FIG. 3, continuous cast mold includes narrow copper plate 21 and wide face copper sheet 22, narrow copper plate 21 in the present embodiment
Be two pieces with wide face copper sheet 22, four dock the accommodating chamber to be formed for accommodating molten steel, the molten steel in continuous casting system ladle into
Enter and implements crystallization in accommodating chamber.The outside of narrow copper plate 21 is provided with leptoprosopy cooling device 23, the outside setting of wide face copper sheet 22
There is wide face cooling device 24, leptoprosopy cooling device 23 and wide face cooling device 24 synergistic effect are that continuous casting condenser implements cooling,
Realize the Step crystallization of molten steel.In order to realize the production of side concave slab, in continuous cast mold disclosed in the present embodiment, leptoprosopy
The surface that copper sheet 21 is used to contact with molten steel is provided with convex block 211, as shown in figure 4, the shape of the transversal cross-section of convex block 211 is arc
The marginal surface of shape, convex block 211 is connect with the base surface of narrow copper plate 21 by transition face, the surface phase of transition face and convex block
It cuts, is linked up smoothly with realizing.During crystallization, convex block 211 can form the narrow side of indent of side concave slab.Correspondingly,
In lateral guide roller set, there can also be protrusion in the middle part of the roll surface for two side deflector rolls that each opposite side deflector roll is included, as shown in Fig. 2,
So that the shape of roll surface is identical as the surface shape of narrow copper plate 21, lateral guide roller set and narrow copper plate 21 are opposite for the setting of protrusion
Arrangement, so that the side concave shape that continuous cast mold crystallizes the side concave slab to be formed is maintained.
During assembling lateral guide roller set and continuous cast mold, the present embodiment corresponding continuous casting system arrangement side
Formula is as follows: the roll surface of the first opposite side deflector roll 11 is located on same guide surface with the surface of corresponding narrow copper plate 21；First pair
The center for two side deflector rolls that side deflector roll 11 is included is located in the same horizontal plane, i.e., is installed by the way of centering.The
The roll surface of two opposite side deflector rolls 12 deviates 0-0.7mm compared to the roll surface of the first opposite side deflector roll 11 inwardly；Third opposite side deflector roll 13
Roll surface be offset inward 0-1.0mm compared to the roll surface of the corresponding side of the second opposite side deflector roll 12.That is, from continuous casting crystallining
The bottom opening of device is downward, the distance between two side deflector rolls that each opposite side guide rail is included can move closer to setting away from
From.
If continuous casting system includes the 4th opposite side deflector roll, the 4th opposite side deflector roll is located at the lower section of third opposite side deflector roll,
And the 4th the roll surface of opposite side deflector roll deviate 0-1.5mm inwardly compared to the roll surface of the third opposite side corresponding side of deflector roll.Preferably,
No matter lateral guide roller set includes three pairs or four pairs, it is preferred that positioned at a bottom of the opposite side deflector roll away from continuous cast mold of bottom
The distance of portion outlet is 30mm-200mm.
The continuous casting system of concave slab in side disclosed by the embodiments of the present invention has the beneficial effect that:
The structure of the narrow copper plate 21 of continuous cast mold is implemented to improve so that with convex block 211, enters continuous casting in molten steel
During being crystallized in crystallizer the structure of convex block 211 can form the side-facing depressions of side concave slab, with continuous casting into
Row, slab is discharged under the guiding role of lateral guide roller set from the outlet at bottom of continuous cast mold, with cooling gradually, slab
The intensity of green shell is increasing, and the present embodiment is used and increased by the intilted mode of opposite side deflector roll to the slab being gradually hardened
Guiding force, the side for being conducive to slab leptoprosopy are recessed into type, on the exposure basis of continuous cast mold, further promote the side of slab
It is recessed into type dynamics, so that the recessed amount in the side of slab further increases, the recessed amount in side further increases the side invagination for being equivalent to slab
It is deeper, the quantity of material between the black line of slab and side margins can be further decreased, therefore can further solve current side concave
The problem of lumber recovery that slab is formed by steel is lower, the higher operating costs of user.
Based on the continuous casting system of concave slab in side disclosed by the embodiments of the present invention, one kind is also disclosed in the embodiment of the present invention
The continuous casting producing method of side concave slab, production method continuous casting system as described in any one of foregoing embodiments are complete
At following technological parameter can be used during continuous casting: opening the time for being poured onto starting throwing from continuous casting as 50s-200s
(second)；Pouring slag additional amount is 0-10Kg；The insertion depth of continuous casting sprue is 50mm-250mm；The taper of the continuous cast mold
Cooling water flow for 0.5-1.5%, the narrow copper plate is 200-700L/min, and the cooling water flow of all side deflector rolls is
30-200 times of Casting speed.
Two specific embodiments are set forth below come the advantages of illustrating continuous casting system disclosed by the invention:
Implement one:
The steel grade of continuous casting is SUS304 in the present embodiment one.
The mounting means of zero pair zero of the first opposite side deflector roll 11 use in narrow copper plate 21 and lateral guide roller set, i.e., first pair
Side deflector roll 11 is relative to narrow copper plate 21 without being all zero pair of zero installation mode between offset, with two adjacent opposite side deflector rolls.
The continuous casting parameter of the continuous casting system of side concave slab is as follows:
It is in slightly concave using above-mentioned continuous casting system slab side produced, after hot rolling, rollover width is obvious
It reduces, 5~7mm is reduced to by 12 original~15mm.
Embodiment two
The steel grade of continuous casting is Q235B in the present embodiment two.
In the present embodiment, narrow copper plate 21 and the first opposite side deflector roll 11 use zero pair of zero mode, 12 phase of the second opposite side deflector roll
For moving 0.5mm in the first opposite side deflector roll 11, third opposite side deflector roll 13 is relative to moving 0.7mm in the second opposite side deflector roll 12, and the 4th
Opposite side deflector roll is relative to moving 0.9mm in third opposite side deflector roll 13.
Remaining continuous casting parameter of the continuous casting system of side concave slab is as follows:
It is in slightly concave that slab, which pulls out trailing flank, and the recessed amount in side is 10~12mm.Then after hot rolling rolling, rollover width is obvious
It reduces, 5~8mm is reduced to by 15 original~20mm.
By above-mentioned two embodiment it can be concluded that, the continuous casting producing method of concave slab in side disclosed by the embodiments of the present invention
Rollover width (width of the black line away from steel side i.e. after hot rolling on steel) can be reduced, black line and side after steel rolling can be also reduced
The width at portion edge can improve the utilization rate of material, while can reduce the use cost of user.
Herein, only emphasis describes the difference with other schemes to each preferred embodiment, as long as each preferred embodiment
Do not conflict, can any combination, embodiment is formed by after combination also within scope disclosed in this specification, it is contemplated that
Text is succinct, is individually described with regard to being no longer formed by embodiment to combination herein.
The above is only a specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (2)
1. the continuous casting system of side concave slab, which is characterized in that including continuous cast mold and lateral guide roller set；Wherein, side
It include the first opposite side deflector roll, the second opposite side deflector roll and third opposite side deflector roll, first opposite side deflector roll, described second to guide roller set
Two side deflector rolls that opposite side deflector roll and third opposite side deflector roll are included are located at the bottom of the continuous cast mold
Export the two sides of lower section；First opposite side deflector roll, second opposite side deflector roll and third opposite side deflector roll are from the continuous casting
The outlet at bottom of crystallizer is successively to the arranged beneath of the continuous cast mold；
The continuous cast mold includes narrow copper plate and wide face copper sheet, and the narrow copper plate is formed with the wide face copper sheet for holding
Receive the accommodating chamber of molten steel；The surface that the narrow copper plate is used to contact with the molten steel is provided with convex block, the transverse direction of the convex block
Cross sectional shape is arc；The marginal surface of the convex block is connect with the base surface of the narrow copper plate by transition face, the mistake
Cross the plane tangent in face Yu the convex block；
The roll surface of first opposite side deflector roll is located on same guide surface with the surface of the corresponding narrow copper plate；Described
The center for two side deflector rolls that one opposite side deflector roll is included is located in the same horizontal plane；
The roll surface of second opposite side deflector roll compared to first opposite side deflector roll roll surface inwardly offset distance be greater than 0mm simultaneously
And it is less than or equal to 0.7mm；
The roll surface of third opposite side deflector roll is offset inward distance compared to the roll surface of the corresponding side of second opposite side deflector roll
Greater than 0mm and it is less than or equal to 1.0mm；
The continuous casting system further includes the 4th opposite side deflector roll, and the 4th opposite side deflector roll is located at third opposite side deflector roll
Lower section, and the roll surface of the 4th opposite side deflector roll deviates 0- compared to the roll surface of the third opposite side corresponding side of deflector roll inwardly
1.5mm；
Positioned at bottom side deflector roll away from the distance of the outlet at bottom of the continuous cast mold be 30mm-200mm.
2. the continuous casting producing method of side concave slab, which is characterized in that complete using continuous casting system as described in claim 1
At, in which:
Opened from continuous casting be poured onto starting throwing time be 50s-200s；Pouring slag additional amount is 0-10Kg；The insertion of continuous casting sprue
Depth is 50mm-250mm；The taper of the continuous cast mold is 0.5-1.5%, and the cooling water flow of the narrow copper plate is
200-700L/min, the cooling water flow of all side deflector rolls are 30-200 times of Casting speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796688.8A CN106270433B (en) | 2016-08-31 | 2016-08-31 | The continuous casting system and method for side concave slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796688.8A CN106270433B (en) | 2016-08-31 | 2016-08-31 | The continuous casting system and method for side concave slab |
Publications (2)
| Publication Number | Publication Date |
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| CN106270433A CN106270433A (en) | 2017-01-04 |
| CN106270433B true CN106270433B (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610796688.8A Active CN106270433B (en) | 2016-08-31 | 2016-08-31 | The continuous casting system and method for side concave slab |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477911A (en) * | 1994-03-24 | 1995-12-26 | Danieli United, Inc. | Twin roller caster |
| DE19529049C1 (en) * | 1995-07-31 | 1997-03-20 | Mannesmann Ag | High-speed thin slab plant |
| CN103817299B (en) * | 2014-03-06 | 2017-02-15 | 张家港浦项不锈钢有限公司 | Continuously cast bloom shape control method and crystallizer |
| CN104399924B (en) * | 2014-11-20 | 2017-04-05 | 东北大学 | A kind of withdrawal straightening machine gradual curvature convex roller and using method for bloom continuous casting |
| CN204997018U (en) * | 2015-09-02 | 2016-01-27 | 山西太钢不锈钢股份有限公司 | Continuous slab casting mold |
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2016
- 2016-08-31 CN CN201610796688.8A patent/CN106270433B/en active Active
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