CN105014035A - Device for simulating initial solidification of liquid steel in crystallizer - Google Patents
Device for simulating initial solidification of liquid steel in crystallizer Download PDFInfo
- Publication number
- CN105014035A CN105014035A CN201510495656.XA CN201510495656A CN105014035A CN 105014035 A CN105014035 A CN 105014035A CN 201510495656 A CN201510495656 A CN 201510495656A CN 105014035 A CN105014035 A CN 105014035A
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- China
- Prior art keywords
- objective table
- elevating lever
- mold
- initial solidification
- lifting motor
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000007711 solidification Methods 0.000 title claims abstract description 29
- 230000008023 solidification Effects 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 230000003028 elevating effect Effects 0.000 claims description 46
- 238000004088 simulation Methods 0.000 claims description 13
- 239000011819 refractory material Substances 0.000 claims description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 abstract description 15
- 238000001816 cooling Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000004079 fireproofing Methods 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The invention discloses a device for simulating initial solidification of liquid steel in a crystallizer. The inner surface of a heating electric furnace is covered with a fireproofing layer. A liquid steel cavity is formed in the fireproofing layer. A fireproofing baffle is arranged at the bottom of the liquid steel cavity. A first lifting rod penetrates the bottom of the heating electric furnace and is fixedly connected with the fireproofing baffle. The water-cooling crystallizer is located on the heating electric furnace, and the water-cooling crystallizer and the heating electric furnace are in sealing connection through a sealing ring. A second lifting rod is vertically arranged on the water-cooling crystallizer. The lower end of the second lifting rod is connected with a thermocouple. The device has the capability of directly obtaining an initial solidification blank shell in the crystallizer, simulates the solidification behavior of the initial solidification blank shell in the crystallizer by extruding liquid steel to move reversely and can guarantee the stability of the liquid steel face, and the steel liquid face coincides with the actual site continuous casting liquid steel face better. By means of the obtained continuous casting blank initial solidification blank shell and combination of macroscopic heat transferring solidification and microstructure, more reasonable technical parameters can be designed, and then quality defects of the continuous casting blank are reduced.
Description
Technical field
The invention belongs to continuous casting of iron and steel simulating experiment technique field, particularly relate to a kind of simulation Mold initial solidification device.
Background technology
Continuous casting is as a kind of important step in iron and steel production, significant to raising finished product rate, raising slab quality, reduction energy consumption etc.Crystallizer is the ingot mould of a water-cooled, causes important function such as having heat transfer, cleaning molten steel, quality control, is also referred to as " heart " of conticaster.
Molten steel is injected in crystallizer from tundish by the intrusive mood mouth of a river, and cooled and solidified forms the strand with certain appearance and size in crystallizer, and strand is pulled continuously out from crystalliser feet, forms continuous casting billet through aligning, cooling twice, cutting technique.If initial solidification behavior is incorrect in crystallizer, strand can be caused to occur various mass defect, as subsurface inclusion, oscillation mark, segregation etc., and these defects all can cause product quality to worsen, not only can reduce recovery rate of iron, and also will produce harmful effect to follow-up steel rolling process, therefore, furtheing investigate the base shell behavior of solidifying initial in crystallizer, is the key improving continuous casting billet quality.
Production due to continuous casting billet is a continuously process, meniscus district is difficult to obtain, therefore, present stage mainly carries out sampling and analysing for the research of solidified structure from the finished product continuous casting billet of steel mill, be difficult to obtain the initial base shell solidified structure under specific period and process conditions in laboratory, and the sample that steel mill takes back is owing to have passed through follow-up aligning, cooling twice, the operation links such as pressure, the correlated characteristic of initial solidification behavior can be changed or cover after the heat-power effect of complexity, therefore, sample observed result cannot be organized corresponding with real initial solidification.
In order to increase economic efficiency, and alleviate the pressure of experimental expenses and researcher, need the equipment setting up a set of simulation Mold initial solidification badly, and study the initial solidification behavior of continuous casting billet by this equipment.
Summary of the invention
For prior art Problems existing, the invention provides a kind of simulation Mold initial solidification device, solve the technical barrier that present stage is difficult to obtain initial solidification base shell, for the initial solidification behavior studying continuous casting billet provides real means.
To achieve these goals, the present invention adopts following technical scheme: a kind of simulation Mold initial solidification device, comprise pedestal, body of wall, the first objective table, the second objective table, the 3rd objective table, the 4th objective table, hot plate and water mold, described body of wall is vertically arranged on pedestal, and described first objective table, the second objective table, the 3rd objective table, the 4th objective table are from bottom to top arranged on body of wall successively; Described hot plate is arranged on the second objective table, is coated with dismountable refractory masses at hot plate inner surface, and refractory masses inside is molten steel chamber, is provided with refractory material baffle plate bottom molten steel chamber; The first elevating lever is vertically provided with below described hot plate, described first objective table is provided with the first lifting motor, described first elevating lever upper end is connected with refractory material baffle plate mutually through bottom hot plate, first elevating lever lower end is connected with the first lifting motor, and the first elevating lever carries out elevating movement by the first lifting motor; Described water mold is arranged on the 3rd objective table, and the 3rd objective table is provided with vibrating motor, and described water mold is connected with vibrating motor, and vibrating motor exports and vibrates and act on water mold; Be connected and sealed by sealing ring between described water mold and hot plate; The water inlet of described water mold is connected with outside water inlet system, and the delivery port of water mold is connected with outside outlet system; Above described water mold, be vertically provided with the second elevating lever, described 4th objective table is provided with the second lifting motor; Be connected with thermocouple in described second elevating lever lower end, described thermocouple is corresponding with hot plate furnace chamber; Described second elevating lever upper end is connected with the second lifting motor, and the second elevating lever carries out elevating movement by the second lifting motor; Described first lifting motor, the second lifting motor, vibrating motor and thermocouple are all connected with outside data collecting system by data wire.
The vibration amplitude scope of described water mold is in the thickness range of sealing ring.
The vibration amplitude scope of described water mold is between 1 ~ 20mm, and frequency scope of shaking is at 10 ~ 600 beats/min.
The barrel tilt adjustable of described water mold.
The rising or falling speed scope of described first elevating lever, the second elevating lever is at 1 ~ 4.5m/min.
The barrel shape of described water mold, the molten steel cavity shape of refractory masses 9 are cylindrical or square column type.
Beneficial effect of the present invention:
The present invention has possessed the ability of initial solidification base shell in direct acquisition crystallizer, and simulate initial solidification base shell in crystallizer by extruding molten steel do counter motion solidify behavior, the stable of molten steel face can be ensured, its molten steel face situation and actual field continuous casting steel liquid level situation more identical.The heat can being studied covering slag in crystallizer by the present invention passes condition to the impact of slab quality; pass through obtained continuous casting billet initial solidification base shell; existing experimental technique can be utilized to observe its interior microscopic institutional framework; contrast with the heterogeneous microstructure of computer simulation; macroscopic view heat transfer is solidified and is combined with microstructure; and then more reasonably technological parameter can be designed, thus reduce the generation of continuous casting billet quality defect.
Accompanying drawing explanation
Fig. 1 is one simulation Mold initial solidification apparatus structure schematic diagram of the present invention;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is B-B sectional view in Fig. 1;
In figure, 1-pedestal, 2-body of wall, the 3-the first objective table; 4-the second objective table, the 5-the three objective table, the 6-the four objective table, 7-hot plate; 8-water mold, 9-refractory masses, 10-refractory material baffle plate, the 11-the first elevating lever; 12-the first lifting motor, 13-vibrating motor, 14-water inlet system, 15-outlet system; 16-the second elevating lever, the 17-the second lifting motor, 18-thermocouple, 19-data collecting system; 20-sealing ring, 21-molten steel, 22-covering slag.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, 2, 3, a kind of simulation Mold initial solidification device, comprise pedestal 1, body of wall 2, first objective table 3, second objective table 4, the 3rd objective table 5, the 4th objective table 6, hot plate 7 and water mold 8, described body of wall 2 is vertically arranged on pedestal 1, and described first objective table 3, second objective table 4, the 3rd objective table 5, the 4th objective table 6 are from bottom to top arranged on body of wall 2 successively; Described hot plate 7 is arranged on the second objective table 4, is coated with dismountable refractory masses 9 at hot plate 7 inner surface, and refractory masses 9 inside is molten steel chamber, is provided with refractory material baffle plate 10 bottom molten steel chamber; The first elevating lever 11 is vertically provided with below described hot plate 7, described first objective table 3 is provided with the first lifting motor 12, described first elevating lever 11 upper end is connected with refractory material baffle plate 10 mutually through bottom hot plate 7, first elevating lever 11 lower end is connected with the first lifting motor 12, and the first elevating lever 11 carries out elevating movement by the first lifting motor 12; Described water mold 8 is arranged on the 3rd objective table 5, and the 3rd objective table 5 is provided with vibrating motor 13, and described water mold 8 is connected with vibrating motor 13, and vibrating motor 13 exports and vibrates and act on water mold 8; Be connected and sealed by sealing ring 20 between described water mold 8 and hot plate 7; The water inlet of described water mold 8 is connected with outside water inlet system 14, and the delivery port of water mold 8 is connected with outside outlet system 15; Above described water mold 8, be vertically provided with the second elevating lever 16, described 4th objective table 6 is provided with the second lifting motor 17; Be connected with thermocouple 18 in described second elevating lever 16 lower end, described thermocouple 18 is corresponding with hot plate 7 furnace chamber; Described second elevating lever 16 upper end is connected with the second lifting motor 17, and the second elevating lever 16 carries out elevating movement by the second lifting motor 17; Described first lifting motor 12, second lifting motor 17, vibrating motor 13 and thermocouple 18 are all connected with outside data collecting system 19 by data wire.
The vibration amplitude scope of described water mold 8 is in the thickness range of sealing ring 20.
The vibration amplitude scope of described water mold 8 is between 1 ~ 20mm, and frequency scope of shaking is at 10 ~ 600 beats/min.
The barrel tilt adjustable of described water mold 8.
The rising or falling speed scope of described first elevating lever 11, second elevating lever 16 is at 1 ~ 4.5m/min.
The barrel shape of described water mold 8, the molten steel cavity shape of refractory masses 9 are cylindrical or square column type, thus can obtain round base or the initial base shell of square billet.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
First the steel grade raw material of deployed composition is sent in hot plate 7, start hot plate 7, steel grade raw material is made to be fused into molten steel 21 in the molten steel chamber of refractory masses 9 inside, then in molten steel 21, powdery covering slag 22 is added into, after slag 22 to be protected also melts completely, control the second elevating lever 16 by the second lifting motor 17 to decline, until thermocouple 18 stretches in molten steel 21, the temperature of molten steel 21 is measured by thermocouple 18, after the temperature of molten steel 21 reaches designing requirement, control the second elevating lever 16 again to rise, thermocouple 18 is made to depart from molten steel 21, and the temperature data of molten steel 21 is by data collecting system 19 record.
Close hot plate 7, water mold 8 is connected with water inlet system 14, outlet system 15, make to connect recirculated water in water mold 8, Vibration on Start-up motor 13 simultaneously, vibration is exported to water mold 8 by vibrating motor 13, and control well water mold 8 amplitude and shake frequently, now start the first lifting motor 12, control the first elevating lever 11 by the first lifting motor 12 to rise, in the first elevating lever 11 uphill process, drive refractory material baffle plate 10 to move up, translational speed controls at 1.5m/min.
When refractory material baffle plate 10 moves upward to water mold 8 bottom, now close the first lifting motor 12, first elevating lever 11 and stop rising, vibrating motor 13 continues to export vibration to water mold 8, until molten steel 21 solidifies completely.After the base shell of molten steel 21 formation after solidifying cools completely, again by water mold 8 lifting certain altitude, then the first lifting motor 12 is restarted, control the first elevating lever 11 to continue to rise, until refractory material baffle plate 10 is higher than sealing ring 20, now close the first lifting motor 12, first elevating lever 11 to stop rising.Finally the first elevating lever 11 is taken apart with the place of being connected of refractory material baffle plate 10, now just can obtain the initial base shell of continuous casting and refractory material baffle plate 10.
Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.
Claims (6)
1. a simulation Mold initial solidification device, it is characterized in that: comprise pedestal, body of wall, the first objective table, the second objective table, the 3rd objective table, the 4th objective table, hot plate and water mold, described body of wall is vertically arranged on pedestal, and described first objective table, the second objective table, the 3rd objective table, the 4th objective table are from bottom to top arranged on body of wall successively; Described hot plate is arranged on the second objective table, is coated with dismountable refractory masses at hot plate inner surface, and refractory masses inside is molten steel chamber, is provided with refractory material baffle plate bottom molten steel chamber; The first elevating lever is vertically provided with below described hot plate, described first objective table is provided with the first lifting motor, described first elevating lever upper end is connected with refractory material baffle plate mutually through bottom hot plate, first elevating lever lower end is connected with the first lifting motor, and the first elevating lever carries out elevating movement by the first lifting motor; Described water mold is arranged on the 3rd objective table, and the 3rd objective table is provided with vibrating motor, and described water mold is connected with vibrating motor, and vibrating motor exports and vibrates and act on water mold; Be connected and sealed by sealing ring between described water mold and hot plate; The water inlet of described water mold is connected with outside water inlet system, and the delivery port of water mold is connected with outside outlet system; Above described water mold, be vertically provided with the second elevating lever, described 4th objective table is provided with the second lifting motor; Be connected with thermocouple in described second elevating lever lower end, described thermocouple is corresponding with hot plate furnace chamber; Described second elevating lever upper end is connected with the second lifting motor, and the second elevating lever carries out elevating movement by the second lifting motor; Described first lifting motor, the second lifting motor, vibrating motor and thermocouple are all connected with outside data collecting system by data wire.
2. one simulation Mold initial solidification device according to claim 1, is characterized in that: the vibration amplitude scope of described water mold is in the thickness range of sealing ring.
3. one simulation Mold initial solidification device according to claim 1, is characterized in that: the vibration amplitude scope of described water mold is between 1 ~ 20mm, and frequency scope of shaking is at 10 ~ 600 beats/min.
4. one simulation Mold initial solidification device according to claim 1, is characterized in that: the barrel tilt adjustable of described water mold.
5. one simulation Mold initial solidification device according to claim 1, is characterized in that: the rising or falling speed scope of described first elevating lever, the second elevating lever is at 1 ~ 4.5m/min.
6. one simulation Mold initial solidification device according to claim 1, is characterized in that: the barrel shape of described water mold, the molten steel cavity shape of refractory masses 9 are cylindrical or square column type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495656.XA CN105014035B (en) | 2015-08-12 | 2015-08-12 | A kind of simulation Mold initial solidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495656.XA CN105014035B (en) | 2015-08-12 | 2015-08-12 | A kind of simulation Mold initial solidification device |
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| Publication Number | Publication Date |
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| CN105014035A true CN105014035A (en) | 2015-11-04 |
| CN105014035B CN105014035B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510495656.XA Expired - Fee Related CN105014035B (en) | 2015-08-12 | 2015-08-12 | A kind of simulation Mold initial solidification device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370695A (en) * | 2016-11-03 | 2017-02-01 | 华北理工大学 | Continuous casting mold flux film thermal resistance measuring device and method |
| CN107020358A (en) * | 2017-06-13 | 2017-08-08 | 北京科技大学 | The device of blank surface solidified structure and unstable state hot-fluid in a kind of simulation crystallizer |
| CN111531142A (en) * | 2020-06-18 | 2020-08-14 | 中南大学 | Device and method for simulating double-roller thin-strip continuous casting technological process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0798289A (en) * | 1993-04-28 | 1995-04-11 | Nippon Steel Corp | Method and apparatus for simulating solidification of metal material |
| CN102357650A (en) * | 2011-09-28 | 2012-02-22 | 中南大学 | Steel liquid solidification simulator in continuous casting crystallizer |
| KR20120097066A (en) * | 2011-02-24 | 2012-09-03 | 현대제철 주식회사 | Simulating apparatus for solidified layer thickness using water model mold |
| CN104266899A (en) * | 2014-10-09 | 2015-01-07 | 中南大学 | Device and method for simulating crack formation of initial solidified blank in continuous casting crystallizer |
-
2015
- 2015-08-12 CN CN201510495656.XA patent/CN105014035B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0798289A (en) * | 1993-04-28 | 1995-04-11 | Nippon Steel Corp | Method and apparatus for simulating solidification of metal material |
| KR20120097066A (en) * | 2011-02-24 | 2012-09-03 | 현대제철 주식회사 | Simulating apparatus for solidified layer thickness using water model mold |
| CN102357650A (en) * | 2011-09-28 | 2012-02-22 | 中南大学 | Steel liquid solidification simulator in continuous casting crystallizer |
| CN104266899A (en) * | 2014-10-09 | 2015-01-07 | 中南大学 | Device and method for simulating crack formation of initial solidified blank in continuous casting crystallizer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370695A (en) * | 2016-11-03 | 2017-02-01 | 华北理工大学 | Continuous casting mold flux film thermal resistance measuring device and method |
| CN106370695B (en) * | 2016-11-03 | 2023-12-12 | 华北理工大学 | Device and method for measuring thermal resistance of continuous casting mold flux film |
| CN107020358A (en) * | 2017-06-13 | 2017-08-08 | 北京科技大学 | The device of blank surface solidified structure and unstable state hot-fluid in a kind of simulation crystallizer |
| CN107020358B (en) * | 2017-06-13 | 2022-07-01 | 北京科技大学 | Device for simulating solidification structure and unsteady state heat flow of casting blank surface layer in crystallizer |
| CN111531142A (en) * | 2020-06-18 | 2020-08-14 | 中南大学 | Device and method for simulating double-roller thin-strip continuous casting technological process |
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| CN105014035B (en) | 2017-03-29 |
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Granted publication date: 20170329 |