CN101745612A - Continuous-casting crystallizer simulation method by taking shell thickness and flowing quality balance into consideration and device thereof - Google Patents
Continuous-casting crystallizer simulation method by taking shell thickness and flowing quality balance into consideration and device thereof Download PDFInfo
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Abstract
The invention relates to a continuous-casting crystallizer simulation method by taking shell thickness and flowing quality balance into consideration and a device thereof; the simulation steps are as follows: (1) a simulation model of a crystallizer is built, and the thickness of a casting blank shell at different position in the simulation model is considered; (2) the simulation model is operated, molten steel running is simulated in the simulation model, the molten steel quantity is gradually reduced in the flowing process, and the reduced amount corresponds to the quantity of practical molten steel for forming the casting blank shell. In the invention, the blank shell and the flowing quality in the crystallizer are balanced, the physical description of the flowing condition in the crystallizer is real, the optimization of the flow field and the water gap structural parameters in the crystallizer are more accurate, the change rule of the flowing condition in the crystallizer can be accurately obtained, so as to reflect the continuous casting practical condition really and lead the flow field and the water gap structural parameters in the crystallizer to be in accordance to the practical condition, thereby having great significance for the optimization of the continuous-casting process parameters and water gap parameters and improving the casting blank quality.
Description
Technical field
The present invention relates to a kind of continuous-casting crystallizer simulation method of considering shell thickness and flow mass balance, and designed a cover crystallizer analogue means according to this method.Be mainly used in the PHYSICAL MODELING OF IN that interior flow field of molten steel flow regime of field of metallurgy continuous cast mold and mold gap are optimized.Be applicable to the fields such as all continuous castings, particularly sheet blank continuous casting of sheet billet continuous casting, billet continuous casting, round billet continuous casting and other type.
Background technology
Continuous cast mold is that the control fluid flows and the critical component of solidification and heat transfer, also is the important step of control slab quality.The physics and the chemical phenomenon of a series of complexity take place in the continuous cast mold, can reduce and contain mobile, heat transfer and the transport phenomena of mass transfer and the metaboly that phase transformation, stress etc. cause, comprise the flowing of molten steel, conduct heat, solidify, solute reallocation, the distribution of field trash and the phase transformation that thermal stress causes etc.Has very big kinetic energy owing to enter the high-temperature molten steel of crystallizer, have strong turbulent flow in the liquid metal that solidified shell is surrounded, this uniformity that Temperature Distribution, solidification and heat transfer and shell thickness in volume slag, the formation of rolling up gas, liquid cave and the crystallizer are distributed that flows all has material impact.The flow behavior of molten steel not only is related to the heat transfer and the floating foreign of crystallizer in the crystallizer, but also with surface such as strand crackle, segregation and internal soundness very confidential relation is arranged.Therefore, molten steel in mold flow field flow regime is studied just seemed particularly important.
Along with the development of continuous casting technology, crystallizer inner fluid flow process and optimal design research are come into one's own.At present, mainly be to study by physical simulation experiment and numerical simulation.Physical analogy is by setting up physical model, institute's research system is carried out Real Time Observation and measurement, model is based upon on the principle of similitude basis, utilizes between physical model and the prototype similitude of aspects such as how much, motion, power, the actual characteristic in research crystallizer flow field.At molten steel in mold heat transferred copper plate of crystallizer, and stitch recirculated cooling water by water in the copper coin and take away.On the crystallizer short transverse, along with the increase to the meniscus distance, molten steel increases cool time in crystallizer, and the heat that spreads out of is many more, and shell thickness increases gradually along the crystallizer short transverse.In the crystallizer exit, solidified shell is general all more than 10mm, normally is in about 10-20mm.Wherein influence pulling rate, transverse shape, the crystallizer cooling parameter factors such as (comprising the design of cooling water seam, water flow velocity, discharge, water pressure) that is mainly of shell thickness.When molten steel in mold solidifies, discharge certain heat, thereby form certain thickness base shell, guarantee that strand goes out behind the crystallizer that the base shell can be resisted ferrostatic pressure and bleed-out not.
At present both at home and abroad to the analog study method of solidified shell in the crystallizer based on numerical simulation, the PHYSICAL MODELING OF IN in crystallizer flow field is mainly concentrated on the distribution situation of different operating mode Fluid field, wait influence the distribution of crystallizer flow field as crystallizer size, casting speed, Argon amount, immersion depth and submersed nozzle structural parameters (comprise internal diameter size, exit angle and number, discharge area and endoporus area than).Though these researchs have directive significance to actual production to a certain extent, all be to be based upon on the basis of ignoring flow mass balance in solidified shell and the crystallizer, there is certain difference with actual production crystallizer flow regime.
After molten steel was injected into crystallizer, because the cooling effect of crystallizer, strand formed solidified shell gradually near crystallizer wall.Along with the molten steel increase of cool time in crystallizer, on the throwing direction, shell thickness increases gradually.Promptly under cooling effect, a part of liquid phase molten steel gradates and becomes the solid phase solidified shell in the crystallizer.According to the thought of flow mass balance in the crystallizer, to inject the interior molten steel total amount of crystallizer and be divided into two parts, a part is the molten steel cooling formation solidified shell near crystallizer wall, another part is a not solidified molten steel in crystallizer.In the crystallizer cooling procedure, process of setting in the crystallizer can be divided into two aspects for the influence of crystallizer flow regime: on the one hand, solidification of molten steel forms solidified shell, and the flowing space produces gradually on the throwing direction and shrinks in the crystallizer, and promptly flow region reduces gradually; On the other hand, because the solidification of molten steel effect, the molten steel total amount that flows in the crystallizer reduces.Traditional PHYSICAL MODELING OF IN method is not considered the influence of solidified shell, and does not consider that the molten steel amount reduces the influence that brings, and promptly the molten steel total amount in crystallizer exit is less than the molten steel total amount that is entered crystallizer by the mouth of a river.The crystallizer flow regime and the actual production that obtain of physical analogy just has certain difference like this, can not reflect the Changing Pattern in crystallizer flow field in the casting process truly, and it is also not accurate enough that gate structure is optimized result of study.
For the difformity crystallizer, solidify the molten steel that is converted into solidified shell in the crystallizer and account for the ratio difference of injecting molten steel total amount in the crystallizer, the influence degree difference of flow regime in the crystallizer.For example, for slab, the slab and the crystallizer of 1700mm * 160mm section, under the general normal condition of sheet billet continuous casting, the shell thickness that goes out crystallizer is generally about 15mm.In the PHYSICAL MODELING OF IN process, when not considering shell thickness, suitable for reading and size end opening of wide of certain plate slab crystallizer is respectively 1750mm, 1735mm, and suitable for reading and size end opening of leptoprosopy is respectively 167mm, 166mm, and crystallizer itself has certain back draught.After considering solidified shell and flow mass balance, wide of crystallizer exit and leptoprosopy outlet are respectively 1705mm and 136mm, relatively consider the data of base shell front and back, reason owing to the base shell, nearly on the thickness direction of crystallizer exit, shunk 1/6, the total amount of mobile molten steel changes greatly in the crystallizer, and promptly bigger variation has all taken place for the flowing space and flow mass in the crystallizer, and certain variation must take place the crystallizer flow regime.From this respect, when not considering shell thickness and flow mass balance, results of Physical and actual conditions that flow regime in the research crystallizer and optimization gate structure obtain have than big-difference, can not accurately reflect the flow regime in the crystallizer.
If for sheet billet, whether the consideration of shell thickness and flow mass balance, and the difference of results of Physical is bigger.For 60mm thin thickness plate slab crystallizer, be about 15mm if go out the crystallizer shell thickness.Because the mould reverse taper of sheet billet own is bigger, adds shell thickness, strand is whole when going out crystallizer has solidified about half.And molten steel has half to solidify basically in the crystallizer, and it is nearly 1/4 that the molten steel total amount has reduced, promptly consider shell thickness and flow mass balance after, flow regime is different fully when not considering these factors in the sheet billet.If do not consider shell thickness and flow mass STUDY ON THE EQUILIBRIUM, should the result can not reflect the truth of continuous casting substantially.For the optimization at the sheet billet mouth of a river, considering not under the solidified shell situation that the concrete structure parameter optimization at the mouth of a river and actual conditions differ too big, notable difference is all arranged on flow region and the fluid total volume in crystallizer.For the square billet of 150mm * 150mm section and the round base of φ 150mm, consider shell thickness and flow mass balance after, the result of physical simulation experiment is also had a significant impact.
Summary of the invention
At the prior art above shortcomings, the purpose of this invention is to provide a kind of continuous-casting crystallizer simulation method of considering shell thickness and flow mass balance.In continuous cast mold PHYSICAL MODELING OF IN process, it is more true by this analogy method the physics of flow regime in the crystallizer to be described, more approaching with actual continuous casting production.
The present invention has designed a cover crystallizer analogue means according to said method simultaneously.
The object of the present invention is achieved like this:
Consider the continuous-casting crystallizer simulation method of shell thickness and flow mass balance, simulation steps is:
(1) sets up the simulation model of crystallizer
1. at first determine the interior casting blank solidification thickness of the shell of crystallizer along diverse location on the inwall direction;
2. again the thickness of casting blank solidification shell diverse location is carried in accordingly and forms the new inwall of crystallizer on the crystallizer inwall;
3. set up the simulation model of crystallizer at last based on crystallizer with new inwall;
(2) simulation model operation
Simulation molten steel operation in simulation model, the amount of molten steel reduces in flow process gradually, and the amount that reduces is corresponding with the amount that actual solidification of molten steel forms the casting blank solidification shell.
Wherein, the thickness of casting blank solidification shell diverse location can be obtained by formula (1) in the crystallizer,
D-shell thickness wherein; K-solidifies proportionality constant, and Z-strand section is apart from the distance of crystallizer meniscus; The V-casting speed.
A kind of crystallizer analogue means that designs based on above-mentioned continuous-casting crystallizer simulation method, it comprises the shell of a simulation mold shape, be provided with inner casing in the enclosure, be sandwich between inner casing and the shell, form the consistency of thickness of casting blank solidification shell when thickness of interlayer and interior thickness of the shell sum and molten steel reality are by this cross section of crystallizer on arbitrary cross section.
Further, be provided with some osculums that are communicated with interlayer at inner casing from top to bottom on every side, be provided with drainpipe in the shell lower end, drainpipe is provided with flow control valve; Being arranged so that more than the arbitrary height and position of inner casing of osculum is consistent with the volume of the above molten steel cooled and solidified formation casting blank solidification shell in this position by the fluid volume of osculum discharge.
Be provided with the water tank that communicates with inner casing at outer casing bottom, water tank has the interface corresponding with the inner shell bottom shape, and water tank bottom is provided with delivery port, and the flow of delivery port is consistent with the flow that the flow sum and the mouth of a river of drainpipe enter inner casing.
Because it is bigger for the influence of crystallizer flow regime that the thickness of solidified shell and the liquid-solid phase in the process of setting transform, therefore after the present invention considers interior base shell of crystallizer and flow mass balance, the physics of flow regime is described more true in the crystallizer, make in the physical analogy process crystallizer flow field and gate structure Parameter Optimization more accurate, thereby can obtain the Changing Pattern of flow regime in the crystallizer exactly.No matter for slab, sheet billet or square billet, adopt and consider that shell thickness and flow mass STUDY ON THE EQUILIBRIUM method can reflect the actual conditions of continuous casting more truly, the optimization result and the actual conditions at the crystallizer flow field and the mouth of a river are more met, and this all has important meaning for casting parameters, mouth of a river parameter optimization and raising slab quality.The present invention can directly provide the technological guidance to casting parameters in the actual production and gate structure parameter optimization.
Description of drawings
Fig. 1-crystallizer analogue means structural representation of the present invention.
Wherein, the 1-mouth of a river; The 2-shell; The 3-inner casing; The 4-drainpipe; The 5-flow control valve; The 6-water tank; The 7-osculum; The 8-delivery port.
The specific embodiment
Below the present invention is further illustrated.
In order to reflect the Changing Pattern in crystallizer flow field in the casting process truly, it is more accurate to make gate structure optimize result of study, in the PHYSICAL MODELING OF IN process, the molten steel total amount changes to crystallizer flow regime and mouth of a river optimization result's influence after should considering the solidification of molten steel effect and being converted into solidified shell.Consider that before and after solidified shell and the flow mass balance, flow regime changes greatly in the crystallizer.Be the variation of the flowing space on the one hand: consider to make the interior flow region of crystallizer produce certain contraction behind the shell thickness, total flowing space reduces, and because the existence of solidified shell, the mouth of a river outlet stream strand last reflow stream thigh kinetic energy that impact base shell produces changes to some extent, and is also inequality to the disturbance that liquid level causes; Be the variation of mobile molten steel total amount on the other hand: because in the process of setting, the part solidification of molten steel becomes the base shell, cause the molten steel total amount to reduce, the molten steel total amount that flows in the crystallizer changes.Considering influences bigger to mold gap optimization result after interior solidified shell of crystallizer and the flow mass balance.For example, for the slab leptoprosopy, after considering solidified shell and flow mass balance, the total amount of the flowing space and fluid changes, be that the flowing space reduces, the molten steel total amount is because process of setting reduces, and the two changes simultaneously, can produce certain influence to the gate structure parameter optimization, reduce to flow burst a disturbance liquid level thereby should increase as downward inclination angle, the mouth of a river; For wide of strand, consider solidified shell and flow mass balance after, make molten steel be subjected to certain constraint at side surface direction mobile, the side opening size at the mouth of a river and inclination angle are optimized must make certain adjustment, considers the influence that causes after the two thereby eliminate.
Based on above-mentioned cognition, the present invention proposes a kind of continuous-casting crystallizer simulation method of considering shell thickness and flow mass balance, its simulation steps is:
One, set up the simulation model of crystallizer---in the PHYSICAL MODELING OF IN of continuous cast mold, according to the actual conditions (molten steel solidifies gradually on short transverse in crystallizer and forms solidified shell) that continuous casting billet solidifies, the model that adopts consideration to have shell thickness is studied.Therefore, need
1. at first determine the interior casting blank solidification thickness of the shell of crystallizer along diverse location on the inwall direction;
Molten steel injects crystallizer by the mouth of a river,, heat is taken away by water seam recirculated cooling water in the copper coin the heat transferred copper plate of crystallizer at molten steel in mold.Because cooling effect, on the crystallizer short transverse, shell thickness increases from top to bottom gradually, and is general all more than 10mm at the thickness of crystallizer exit solidified shell, normally is in about 10-20mm.The principal element that wherein influences shell thickness is pulling rate, crystallizer transverse shape and crystallizer cooling parameter (comprising the design of cooling water seam, water flow velocity, discharge, water pressure etc.).Wherein shell thickness can be determined according to mathematical simulation, production experience and certain measuring method in the crystallizer, also can determine according to formula.Can obtain the thickness of the corresponding a certain position of casting blank solidification shell in the crystallizer according to formula (1), shell thickness also can be by setting up the method for Mathematical Modeling simultaneously, and the growing state of solidified shell in the crystallizer is determined in the strand temperature field that obtains by emulation.
D-shell thickness wherein, mm; K-solidifies proportionality constant, can rule of thumb determine, or calculate by method of powder actuated shot on-the-spot test casting blank shell thickness; When rule of thumb determining, according to difform strand, span is different, and general span is 15-27; Z-strand section is apart from the distance of crystallizer meniscus, mm; The V-casting speed, mm/s;
2. after obtaining the casting blank solidification thickness of the shell, the thickness with casting blank solidification shell diverse location is carried in the new inwall of formation crystallizer on the crystallizer inwall accordingly again;
3. set up the simulation model of crystallizer at last based on crystallizer with new inwall;
Two, simulation model operation
In the solidification of molten steel process, the part molten steel is because cooling effect is converted into solidified shell, and the molten steel total amount in crystallizer exit is less than the molten steel total amount that is entered crystallizer by the mouth of a river.After considering crystallizer flow mass balance; the molten steel total amount that is entered in the crystallizer by the mouth of a river can be divided into two parts; the cooling of part molten steel is converted into solidified shell; a part of in addition molten steel forms strand by the protection of base shell and enters two cold-zones; but must guarantee that the total amount that crystallizer is injected at the two summation and the mouth of a river equates; thereby guarantee the flow mass balance, be consistent with actual conditions in the crystallizer.When therefore the simulation molten steel moved in simulation model, the amount of molten steel should reduce in flow process gradually, and the amount that reduces is corresponding with the amount that actual solidification of molten steel forms the casting blank solidification shell.
The present invention is based on above-mentioned continuous-casting crystallizer simulation method and designed a kind of crystallizer analogue means simultaneously, referring to Fig. 1, it comprises the shell 2 of a simulation mold shape, in shell 2, be provided with inner casing 3, inner casing 3 is simulated the crystallizer solidified shell and is had certain back draught, and inner casing 3 upper ends are inserted with crystallizer submersed nozzle 1.Be sandwich between inner casing and the shell,, form the consistency of thickness of casting blank solidification shell when therefore thickness of interlayer and interior thickness of the shell sum and molten steel reality are by this cross section of crystallizer on arbitrary cross section because be simulation crystallizer solidified shell.
On around the inner casing 3, be provided with some osculums that are communicated with interlayer 7 from top to bottom, the purpose of osculum is by its osmosis, make fluid enter mezzanine space, simulate that solidification of molten steel in the actual production process forms solidified shell and the minimizing that causes liquid molten steel total amount with this.Therefore the setting of osculum should be satisfied: the liquid volume of discharging by osculum more than the arbitrary height and position of inner casing is with consistent at the volume of the actual formation of the above molten steel in this position casting blank solidification shell.For the interlayer fluid is discharged, be provided with drainpipe 4 in shell 2 lower ends, drainpipe 4 is provided with flow control valve 5 with the control fluid discharge, guarantees that fluid discharge equates with the molten steel amount of solidifying formation base shell.Wherein, flow control valve 5 control fluid flow Q can be calculated by formula (2).
Wherein A, B are respectively casting blank section width and thickness, mm; The D-shell thickness, mm, V are pulling rate, mm/s.
Be provided with the water tank 6 that communicates with inner casing in shell 2 bottoms, water tank has the interface corresponding with the inner shell bottom shape, water tank 6 bottoms are provided with delivery port 8, and the flow of delivery port is consistent with the flow that the flow sum and the mouth of a river of drainpipe enter inner casing, this meaning flow mass balance.
Molten steel injects crystallizer by the mouth of a river, because the guide effect at the mouth of a river, recirculating zone and following recirculating zone on both sides, the mouth of a river have formed respectively.Wherein, near last recirculating zone, the stream thigh rushes at the solidified shell of crystallizer, because the existence of shell thickness, the stream thigh changes flow direction in advance, and stream strand upward velocity becomes big, disturbance to liquid level fluctuation of crystallizer increases, and volume slag situation also changes to some extent, and last recirculating zone integral body moves up; Equally, near following recirculating zone, because shell thickness increases, it influences trend and also becomes big thereupon.After considering the flow mass balance, the part of crystallizer inner fluid will be discharged by drainpipe by the osmosis of solidified shell.Therefore, compare when not considering the flow mass balance, crystallizer exit fluid total volume reduces, and flow field and flow regime in the crystallizer obviously change.
According to the solidified shell analogy method of difformity crystallizer, after consideration shell thickness and the flow mass balance, the crystallizer flow regime more approaches actual conditions.Consider before and after solidified shell and the flow mass balance, should the interior flow regime of crystallizer change greatly.Be the variation of the flowing space on the one hand, shell thickness makes the certain contraction of flow region generation in the crystallizer, and total flowing space reduces; Be the variation of flow mass on the other hand,, cause the molten steel total amount to reduce because in the process of setting, the part solidification of molten steel becomes solidified shell.In addition, whether consider that shell thickness and flow mass balance produce certain influence to gate structure parameter optimization result.Because solidified shell has certain thickness, the contraction of crystallizer inwall may have certain influence by stream field, produces certain influence as the angle for mouth of a river side opening; And solidifying wide of strand, after wide face solidifies, make molten steel mobile very big influence, the side opening size at the mouth of a river and these factors of the necessary consideration of inclination angle optimization of being subjected in side surface direction, the tradition research method is ignored this influence usually, and these keys of gate structure parameter optimization normally.After considering the interior solidified shell of crystallizer, by crystallizer flow regime under the more different gate structure parameters of physical analogy, as situations such as liquid level fluctuation of crystallizer situation, volume slag situation, liquid slag layer distribution, Flow Field Distribution, obtain gate structure parameter best under certain technological parameter by optimization, thereby optimize the result more near actual production, more accurate.
The present invention is applicable to the fields such as all continuous castings, particularly sheet blank continuous casting of sheet billet continuous casting, billet continuous casting, round billet continuous casting and other type.
For the different section crystallizer, the thickness of solidified slab shell in secondary of strand in crystallizer is different, and the ratio of solidifying the shared molten steel total amount of part is also inequality.Therefore, crystallizer shell thickness and the molten steel flow mass equilibrium problem in process of setting can not be ignored for the flow regime of crystallizer and the influence of mouth of a river stream thigh.In the physical analogy process, consider that interior shell thickness of crystallizer and flow mass balance are very necessary for flow regime and gate structure Study on optimized.
Situation for sheet billet, after considering solidified shell and flow mass equilibrium problem, when strand goes out crystallizer, strand is whole have been solidified about half, molten steel has half to solidify basically, it is nearly 1/4 that the molten steel total amount has reduced, promptly consider the two after, flow regime is different fully when not considering these factors in the thin slab mold.
Because the cooling of crystallizer is variant, the growing state of difformity crystallizer solidified shell is also different.As for slab, the shell thickness simulation can be cooled off situation according to crystallizer, is divided into wide and two kinds of situations of leptoprosopy, and same solidified shell loose structure also can be divided into wide and two kinds of situations of leptoprosopy; For square billet, because the symmetry of crystallizer cooling, each side can be considered according to same shell thickness situation of change; For the circle base, also can consider on the circumferencial direction by same solidified shell Changing Pattern; And for sheet billet, whether consider that solidified shell is to flow regime influence degree maximum in the crystallizer, because mold shape is more special, be divided into plate shaped crystallizer and funnel-type crystallizer, wherein plate shaped crystallizer can be according to the consideration method of slab solidified shell, and the solidified shell of wide of funnel-type crystallizer may be thought of as infundibulate.Wherein, can determine to guarantee flow mass balance in the crystallizer according to parameters such as the crystallizer section of physical analogy, actual condition, the base shell speeds of growth by drainpipe discharge section fluid flow.
In the physical analogy process, after considering shell thickness and flow mass balance, can regard solidified shell as porous media, that part of molten steel that has solidified is got rid of from crystallizer side aperture with penetration mode, can eliminate the deviation that causes the minimizing of molten steel amount to bring because of process of setting like this, make the result of physical analogy more near actual continuous casting production, the physics of flow regime is described more true in the crystallizer.
Claims (5)
1. consider the continuous-casting crystallizer simulation method of shell thickness and flow mass balance, it is characterized in that: simulation steps is:
(1) sets up the simulation model of crystallizer
1. at first determine the interior casting blank solidification thickness of the shell of crystallizer along diverse location on the inwall direction;
2. again the thickness of casting blank solidification shell diverse location is carried in accordingly and forms the new inwall of crystallizer on the crystallizer inwall;
3. set up the simulation model of crystallizer at last based on crystallizer with new inwall;
(2) simulation model operation
Simulation molten steel operation in simulation model, the amount of molten steel reduces in flow process gradually, and the amount that reduces is corresponding with the amount that actual solidification of molten steel forms the casting blank solidification shell.
2. the continuous-casting crystallizer simulation method of consideration shell thickness according to claim 1 and flow mass balance is characterized in that: the thickness of casting blank solidification shell diverse location is obtained by formula (1) in the crystallizer,
D-shell thickness wherein; K-solidifies proportionality constant, and Z-strand section is apart from the distance of crystallizer meniscus; The V-casting speed.
3. the continuous-casting crystallizer simulation method of consideration shell thickness according to claim 1 and 2 and flow mass balance and the crystallizer analogue means that designs, it is characterized in that: it comprises the shell (2) of a simulation mold shape, in shell (2), be provided with inner casing (3), be sandwich between inner casing and the shell, form the consistency of thickness of casting blank solidification shell when thickness of interlayer and interior thickness of the shell sum and molten steel reality are by this cross section of crystallizer on arbitrary cross section.
4. crystallizer analogue means according to claim 3, it is characterized in that: go up on every side at inner casing (3) and be provided with some osculums that are communicated with interlayer (7) from top to bottom, be provided with drainpipe (4) in shell (2) lower end, drainpipe (4) is provided with flow control valve (5); The liquid volume that being arranged so that more than the arbitrary height and position of inner casing of osculum discharged by osculum is with consistent at the actual volume that forms the casting blank solidification shell of the above molten steel in this position.
5. crystallizer analogue means according to claim 4, it is characterized in that: be provided with the water tank (6) that communicates with inner casing in shell (2) bottom, water tank has the interface corresponding with the inner shell bottom shape, water tank (6) bottom is provided with delivery port (8), and the flow of delivery port is consistent with the flow that the flow sum and the mouth of a river of drainpipe enter inner casing.
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| CN107127313B (en) * | 2017-05-19 | 2018-10-23 | 重庆大学 | Crystallizer physical simulating method and device based on ferrostatic pressure and solidification phenomenon |
| CN107330150A (en) * | 2017-05-31 | 2017-11-07 | 天津大学 | A kind of method for optimizing DTB crystallizer diversions cylinder based on Fluent |
| CN107330150B (en) * | 2017-05-31 | 2020-07-31 | 天津大学 | Method for optimizing guide cylinder of DTB (draw texturing yarn) crystallizer based on Fluent |
| CN107871439A (en) * | 2017-11-28 | 2018-04-03 | 重庆大学 | A kind of physical simulation experiment method and experimental system of chamfering type continuous cast mold |
| CN108346366A (en) * | 2018-04-19 | 2018-07-31 | 安徽工业大学 | A kind of crystallizer model and crystallizer flow field simulation method for the research of crystallizer flow field |
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