CN208879655U - A kind of continuous cast mold Yarn feeding device - Google Patents
A kind of continuous cast mold Yarn feeding device Download PDFInfo
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- CN208879655U CN208879655U CN201821551240.0U CN201821551240U CN208879655U CN 208879655 U CN208879655 U CN 208879655U CN 201821551240 U CN201821551240 U CN 201821551240U CN 208879655 U CN208879655 U CN 208879655U
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- guide pipe
- steel wire
- steel
- feeding
- ceramic tube
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Abstract
The utility model relates to a kind of continuous cast mold Yarn feeding devices, belong to metallurgy industry continuous casting equipment technical field.Technical solution is: including crystallizer (1), guide pipe (4), vibrator (5), feeding wire machine (6), steel wire (7), directive wheel (8) and ceramic tube (9), steel wire (7) is located on feeding wire machine (6), one end of guide pipe (4) is connected on feeding wire machine (6), the other end of guide pipe (4) connects ceramic tube (9), ceramic tube (9) protrudes into crystallizer (1), the outside of guide pipe (4) is equipped with vibrator (5), equipped with multiple directive wheels (8) with steel wire (7) cooperation in guide pipe (4).The beneficial effects of the utility model are: being diluted by feeding straight carbon steel line to center carbon normal segregation, to improve continuous casting billet consistency, improve center segregation, improves continuous casting billet internal soundness problem, meet steel products to the various needs in market.
Description
Technical field
The utility model relates to a kind of continuous cast mold Yarn feeding devices, the especially Yarn feeding device of square blank crystallizer, belong to
Metallurgy industry continuous casting equipment technical field.
Background technique
Continuous casting billet center porosity and center segregation are the essential characteristics of its internal soundness, and specification is bigger, alloy content is higher,
The rank of defect is higher, especially bloom, large round billet, and loose as the shrinkage cavity periodically occurred, center segregation is (in being presented as
Heart normal segregation) increase with the raising of shrinkage cavity rank, these defects have seriously affected the internal soundness of stocking.Around its at
Cause produces more production control technology.
Existing small steel ingot bridging phenomenon, continuous casting billet form periodic central pipe when due to continuous casting and solidifying；In addition base
Yu Xuanfen crystallization mechanism causes gross segregation (center segregation and V-shaped segregation) to become inevitable, especially high-carbon high-alloy steel, macro
Can it be even more to protrude that carbon segregation, which be seen, become the key for restricting these steel grade quality or even implementing continuous casting.For high-carbon wire rod,
Center porosity and segregation will cause the reduction of its drawing property, break rate increase；Bearing steel is because be segregated so that carbide homogeneity
It is deteriorated；Mould steel influences service life because the coarse chip off-falling of carbide occurs in carbon segregation.
Based on the basic principle for influencing continuous casting billet internal soundness, a large amount of technical measures for improving internal soundness are produced.Extremely
Until the present, these technologies are broadly divided into three classes: (1) reducing harmful element (clean steel smelting, removal of inclusions or the control in steel
Make its distributional pattern)；(2) equiaxial crystal ratio (low overheat casting, Tundish Heating technology, addition microalloy, electromagnetic agitation are improved
Deng)；(3) by compensating the solidification shrinkage of casting blank solidification end or preventing casting blank bulging, solidification end is inhibited to absorb enrichment segregation
The molten steel of solute (using end slighter compress, solidification end continuous forging, solidification end is cold etc. by force).
Though low overheat casting can increase equiax crystal quantity in liquid core, to prevent nozzle blocking and promote field trash on
It is unfavorable to float.Electromagnetic agitation and low overheat casting can reduce center gross segregation by increasing the equiax crystal amount at wick-containing center,
But the negative segregation band of carbon can be caused, " Improvement of inner quality of continuously cast
Billets using electromagnetic stirring and thermal soft reduction " (Ironmaking
And Steelmaking, Vol.25 (3)) text points out isometric intergranular to there is the molten steel of enrichment segregation element that will to will form half macro
See segregation.Therefore, in order to prevent the flowing of these segregation element molten steel containing enrichment, while applying suitably timely in solidification end
Deflection, the volume contraction formed when compensating solidification of molten steel in two-phase section, the slighter compress for implementing continuous casting billet is current relatively reason
The means thought, but slighter compress not only more demanding control technology, but also special heavv section and continuous small-billet casting are all difficult to
To applications well.
Accelerating continuous casting center cooling velocity can be improved equiaxial crystal ratio, reduce Central Carbon Segregation, and Ukraine uses slab knot
Band technology is fed in brilliant device improves center segregation, it is emphasised that by feeding ordinary band steel to reduce the degree of superheat.Domestic northeast is big
Research and the paper also reported about band is fed in plate slab crystallizer is learned, Baosteel reports the test knot that band is fed in crystallizer
Fruit.All above-mentioned work all concentrate on slab caster, and mainly reduce molten steel by feeding strip in a crystallizer
The degree of superheat.Line feeding is seldom as the cold burden reduction degree of superheat, the report of increase equiaxial crystal ratio in square blank crystallizer, at present main feeding
Alloy is for finely tuning ingredient, such as rare earth, aluminum steel.
Utility model content
The utility model aim is to provide a kind of continuous cast mold Yarn feeding device, by feeding straight carbon steel line, improves continuous casting
Base center porosity, center segregation improve continuous casting billet internal soundness, solve the problems, such as background technique.
The technical solution of the utility model is:
A kind of continuous cast mold Yarn feeding device, comprising crystallizer, guide pipe, vibrator, feeding wire machine, steel wire, directive wheel and
Ceramic tube, steel wire are located in feeding wire machine, and one end of guide pipe is connected in feeding wire machine, and the other end and ceramic tube of guide pipe connect
It connects, ceramic tube protrudes into crystallizer, and the outside of guide pipe is equipped with vibrator, the guiding equipped with the cooperation of multiple and steel wire in guide pipe
Wheel.
Directive wheel in the guide pipe is located at close to one end of ceramic tube.
Directive wheel in guide pipe is five.
The vibration frequency of vibrator on the outside of the guide pipe is 200~350Hz, and amplitude is 0.1~0.5mm.
Using the utility model, according to the steel grade of casting, in steel wire selection, the straight carbon steel Wire coils of low carbon content,
Carbon content is exported by feeding wire machine according to setting speed lower than casting steel grade carbon content, steel wire, imports ceramic tube by guide pipe,
Under the high-frequency vibration of vibrator, steel wire enters in crystallizer and extends along slab center toward depths, and steel wire temperature is continuous
Rise until (steel wire temperature is in two-phase section) consistent with slab core temperature, since steel wire liquidus temperature is than casting steel grade
Height, steel wire will not melt in wick-containing, and start that solid-state is presented, and have certain rigidity, extend always, reach wick-containing two-phase
Qu Hou, steel wire just soften, the dispersion under the function composite by electromagnetic stirring of end, become nucleation mass point, center carbon content are reduced, to make
Central pipe, center segregation are inhibited.
The beneficial effects of the utility model are: by the way that steel wire is fed and is reached along wick-containing center in continuous cast mold
Mushy Zone not only reduces the center degree of superheat, raising equiaxial crystal ratio by small high-frequency vibration and destroys small steel ingot structure shape
At central pipe, and by feed straight carbon steel line middle low carbon content center carbon normal segregation is diluted, to improve
Continuous casting billet consistency improves center segregation, improves continuous casting billet internal soundness problem, meets steel products to each of market
Kind needs, especially suitable for continuous casting lines such as square billet, round billets.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is utility model works status diagram；
Wick-containing center and steel wire temperature profile when Fig. 3 is continuous casting different location；
In figure: 1, crystallizer；2, soaking water gap；3, tundish；4, guide pipe；5, vibrator；6, feeding wire machine；7, steel wire；
8, directive wheel；9, ceramic tube；10, casting blank clamping roller；11, liquid phase region；12, two-phase section；13, solid phase scull, one steel wire temperature of technique
Spend K1, two steel wire temperature K2 of technique, line feeding liquidus temperature YT, CL60 liquidus curve Y, line feeding solidus temperature GT, CL60 solid phase
Line G, wick-containing temperature XT.
Specific embodiment
Below in conjunction with attached drawing, by example, the utility model is described in further detail.
Referring to attached drawing 1-3, a kind of continuous cast mold Yarn feeding device includes crystallizer 1, guide pipe 4, vibrator 5, feeding wire machine
6, steel wire 7, directive wheel 8 and ceramic tube 9, steel wire 7 are located in feeding wire machine 6, and one end of guide pipe 4 is connected in feeding wire machine 6, guiding
The other end of pipe 4 is connect with ceramic tube 9, and ceramic tube 9 protrudes into crystallizer 1, and the outside of guide pipe 4 is equipped with vibrator 5, guide pipe
Equipped with multiple directive wheels 8 cooperated with steel wire 7 in 4.
Specific embodiment:
In the present embodiment, the lower section of guide pipe 4, the vibration frequency of vibrator 5 are mounted on referring to attached drawing 1,2, vibrator 5
For 200~350Hz, amplitude is 0.1~0.5mm.
Directive wheel 8 in guide pipe 4 is five, and five directive wheels 8 are each provided at close to one end of ceramic tube 9.
Feeding wire machine 6 is steel-making commonly used equipment, has speed setting and control function, and steel wire 7 is pressed from both sides by 6 motor driven of feeding wire machine
It holds roller and after uncoiling aligning, is sent into guide pipe 4 from drum, configure vibrator 5 in the lower section of guide pipe, make steel wire in frequency low-amplitude
Crystallizer is constantly transported in vibration.When steel wire 7 is exported to guide pipe 4, is clamped and changed by five molecular directive wheels 8 of wheel
It changes direction, by immersing ceramic tube 9, into crystallizer 1；Ceramic tube 9 is inscribed into micro argon gas, keeps inert gas in pipe micro-
Positive pressure.Steel wire enters crystallizer centre according to the track of setting, and constantly extends inward, extension speed it is synchronous with pulling rate or
Person is slightly larger than pulling rate, with extending inward, steel wire temperature be increased to it is consistent with wick-containing temperature, into solid-liquid two-phase region 12, steel wire
In two-phase section, under function composite by electromagnetic stirring, steel wire is in central area Dispersed precipitate and forming core.
Using the Yarn feeding device concrete technology the following steps are included:
Step 1: preparation, according to the casting parameter such as casting steel grade, continuous casting billet specification, pulling rate, degree of superheat, according to choosing
The material of steel wire 7 is selected, C:0.1-0.3% straight carbon steel, wire-feeding velocity are equal to pulling rate and carry out solidification calculating, to reach steel wire 7 in liquid phase
Non-fusible in the 11, softening of two-phase section 12, moderate center carbon content are target, calculate wire specification.Such as it is poured wheel steel CL60
(C 0.57-0.65%, Si 0.17-0.37%, Mn 0.5-0.8%), when round billet φ 400mm specification, pulling rate 0.46m/min, selection
Q235 wire rod is line feeding material, calculates process of setting, obtains continuous casting different location center portion and steel wire Temperature Distribution, is such as schemed
Shown in 3, in figure: one steel wire temperature K1 of technique, two steel wire temperature K2 of technique, line feeding liquidus temperature YT, CL60 liquidus curve Y, feeding
Line solidus temperature GT, CL60 solidus G, wick-containing temperature XT, liquid phase is transitioned into two-phase section when from 4 meters of meniscus, compares two kinds
The heating rate of wire specification, wire rod heating rate is slow when process conditions two, and wire rod remains as solid-state when liquid phase disappears, it is laggard
Enter two-phase section.After material and technique determine, Yarn feeding device is prepared in place, by the straight carbon steel of the 5 ~ 20mm of gauge or diameter of wire φ got ready
Disk circle prepares in place；
Step 2: after opening and pouring and stablize, steel wire 7 is (synchronous or slightly larger than drawing according to setting speed export by feeding wire machine 6
Speed), import ceramic tube 9 by line feeding metal tube 4, under the high-frequency vibration of vibrator 5, steel wire enter in crystallizer 1 and along
Slab center extends toward depths, and since steel wire is synchronous with environment molten steel, steel wire is able to maintain on centerline, and steel wire temperature is not
It is disconnected to rise until (steel wire temperature is in two-phase section) consistent with slab core temperature, after reaching up to wick-containing two-phase section 12, at end
It holds dispersion under function composite by electromagnetic stirring and diffuses in solution, last all solidifications 13, lower carbon content can reduce continuous casting
Center normal segregation, remaining ingredient will not impact slab ingredient.
Claims (4)
1. a kind of continuous cast mold Yarn feeding device, it is characterised in that include crystallizer (1), guide pipe (4), vibrator (5), line feeding
Machine (6), steel wire (7), directive wheel (8) and ceramic tube (9), steel wire (7) are located on feeding wire machine (6), one end connection of guide pipe (4)
On feeding wire machine (6), the other end of guide pipe (4) is connect with ceramic tube (9), and ceramic tube (9) protrudes into crystallizer (1), guiding
The outside for managing (4) is equipped with vibrator (5), equipped with multiple directive wheels (8) with steel wire (7) cooperation in guide pipe (4).
2. a kind of continuous cast mold Yarn feeding device according to claim 1, it is characterised in that leading in the guide pipe (4)
It is located to wheel (8) close to the one end of ceramic tube (9).
3. a kind of continuous cast mold Yarn feeding device according to claim 2, it is characterised in that leading in the guide pipe (4)
It is five to wheel (8).
4. a kind of continuous cast mold Yarn feeding device according to claim 1 or 2, it is characterised in that the guide pipe (4) is outside
The vibration frequency of the vibrator (5) of side is 200~350Hz, and amplitude is 0.1~0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821551240.0U CN208879655U (en) | 2018-09-21 | 2018-09-21 | A kind of continuous cast mold Yarn feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821551240.0U CN208879655U (en) | 2018-09-21 | 2018-09-21 | A kind of continuous cast mold Yarn feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208879655U true CN208879655U (en) | 2019-05-21 |
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ID=66513395
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821551240.0U Expired - Fee Related CN208879655U (en) | 2018-09-21 | 2018-09-21 | A kind of continuous cast mold Yarn feeding device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111496204A (en) * | 2020-04-22 | 2020-08-07 | 山东钢铁股份有限公司 | Method for improving center segregation and porosity of continuous casting slab of medium-low carbon steel thick plate |
| CN111715858A (en) * | 2020-06-30 | 2020-09-29 | 南阳汉冶特钢有限公司 | Production method for realizing low-superheat-degree continuous casting |
| EP3821998A1 (en) * | 2019-11-18 | 2021-05-19 | Shanghai University | Cored wire for reducing degree of superheat of molten steel and use method thereof |
| CN114082906A (en) * | 2021-11-17 | 2022-02-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of steel bar and steel bar |
-
2018
- 2018-09-21 CN CN201821551240.0U patent/CN208879655U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3821998A1 (en) * | 2019-11-18 | 2021-05-19 | Shanghai University | Cored wire for reducing degree of superheat of molten steel and use method thereof |
| CN111496204A (en) * | 2020-04-22 | 2020-08-07 | 山东钢铁股份有限公司 | Method for improving center segregation and porosity of continuous casting slab of medium-low carbon steel thick plate |
| CN111715858A (en) * | 2020-06-30 | 2020-09-29 | 南阳汉冶特钢有限公司 | Production method for realizing low-superheat-degree continuous casting |
| CN114082906A (en) * | 2021-11-17 | 2022-02-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of steel bar and steel bar |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 |