CN101433948B - Round billet continuous casting machine with especially big sectional plane - Google Patents
Round billet continuous casting machine with especially big sectional plane Download PDFInfo
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- CN101433948B CN101433948B CN2008102339518A CN200810233951A CN101433948B CN 101433948 B CN101433948 B CN 101433948B CN 2008102339518 A CN2008102339518 A CN 2008102339518A CN 200810233951 A CN200810233951 A CN 200810233951A CN 101433948 B CN101433948 B CN 101433948B
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- crystallizer
- continuous casting
- casting machine
- sectional plane
- round billet
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- 238000009749 continuous casting Methods 0.000 title claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 4
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000005266 casting Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003756 stirring Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 10
- 239000000498 cooling water Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
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- 231100000241 scar Toxicity 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a super large cross section (phi 800 to phi1,000mm of diameter) round billet continuous caster, which is characterized in that the continuous caster consists of a crystallizer provided with a foot roll, a crystallizer vibration device, an ingot supporting and guiding device, an ejection device, a protection and insulation section, and a crystallizer electromagnetic stirring device, wherein a copper pipe of the crystallizer with the foot roll is contacted with molten steel, the outer layer of the crystallizer with the foot roll is a stainless steel water jacket, the furthest layer of the crystallizer with the foot roll is a carbon steel shell, the stainless steel water jacket and the carbon steel shell are connected by an upper flange and a lower flange, and a crystallizer water tank adopts the one-inlet two-outlet one-cold circulation mode; and the crystallizer vibration device does not adopt the sine electric drive mode. The continuous caster has the advantages of novel structure, compact and reasonable arrangement, better quality and lower cost of billet, and so on.
Description
Technical field
The present invention relates to the round base/pipe casting apparatus in a kind of metallurgical industry continuous casting technology field, relate in particular to especially big sectional plane circle base/pipe casting apparatus of diameter 800～1000mm.
Background technology
Conticaster is modern metallurgical industry continuous casting process capital equipment, and its design feature and operation principle not only determine conticaster operating efficiency and production cost, also directly influences product quality.Up to now, that the form of pipe/round billet continuous casting machine mainly contains is vertical, horizontal, full arc shape three major types, and be widely used in suitability for industrialized production practice, its product is used for industries such as oil, chemical industry, machinery, but before this conticaster puts into production, even no matter be that common steel grade or special steel grade pipe/circle base maximum cross-section are no more than worldwide,
700mm.
Because national economic development is constantly good for large-sized seamless steel pipe market, strand demand to especially big sectional plane increases day by day, and the big ingot casting of many before this employings is a blank, its output, quality, lumber recovery all can not be satisfactory, our continuous casting billet always explored with especially big sectional plane substitutes for this reason, is the difficult problem that needs that we face solve and develop the technology of especially big sectional plane conticaster of a kind of diameter 800-1000mm and equipment.
Summary of the invention
The objective of the invention is to satisfy industries such as domestic and international new forms of energy wind-power electricity generation large size bearing, oil, chemical industry, machinery, shipbuilding forging, hyper-thick pipe seamless steel pipe are made demand, a kind of vertical casting machine of producing high-quality, especially big sectional plane pipe/circle base is provided.
Especially big sectional plane round billet continuous casting machine of the present invention is achieved through the following technical measures, the feature of conticaster is vertical, and it is by partly forming with the crystallizer of sufficient roller, mould vibration device, holder dummy ingot device, knockout mechanism, protection stay-warm case, crystallizer electromagnetic mixing apparatus etc.
Being with sufficient roller crystallizer to contact with molten steel is copper pipe, and skin is the stainless steel water jacket, and outermost layer is the carbon steel shell, and it connects by last lower flange; For guaranteeing that pipe has the shell thickness of enough support strengths at the crystallizer end opening, the crystallizer water tank adopts one to advance scene 2 one cold circulation standard; The crystallizer copper pipe tapering is to draw according to the main steel grade solidification shrinkage calculation of parameter that has provided, and for guaranteeing water seam size, water jacket requires that strict tolerance limits is arranged.
The sufficient roller of the densely covered down two row's adjustable gaps of crystallizer copper pipe.
Foot roller district is a secondary cooling zone, and uniform hydraulic spray nozzle carries out water yield control according to pipe poring rate and the steel grade of being poured into a mould.Secondary cooling water is connected fast by the water-accepting board of vibrating device.
Mould vibration device is the non-sine powered version, can change frequency to guarantee the constant of negative slip time according to different poring rates, and mould vibration device adopts plate ring guiding, and two servomotor symmetries drive.One, secondary cooling water is concentrated by the water-accepting board of vibrating device provides.
Holder dummy ingot device is made up of rigid dummy bar, dummy bar head, elevating drive mechanism, guiding mechanism etc., top is that the dummy bar head with special shape is connected with rigid dummy bar, elevating drive mechanism adopts the frequency control motor transmission, and for preventing sideslip, periphery is provided with guiding mechanism; Holder dummy ingot device is used to open water operates and strand is drawn crystallizer and supported strand, carries out stepless time adjustment according to casting speed,
Knockout mechanism is used for strand and takes off ingot, upset, conveying, and the deingot device enters the dummy bar head bottom when holder dummy ingot device drops to desired location, breaks away from dummy bar after the slow cooling and is overturn together with pipe by switching mechanism and pipe is placed rollgang.
The crystallizer electromagnetic mixing apparatus places the crystallizer middle and lower part for the external coil, and its internal diameter can hold crystallizer and the sufficient roller of part.
Especially big sectional plane round billet continuous casting machine technology advanced person of the present invention; Novel structure; Configuration is compact, rationally, adopts the vertical straightening deformation that produces when stopping circular-arc type continuous casting machine aligning pipe/circle base and pipe/circle base internal flaw of easily causing producing, the surperficial no impression defective of pipe/circle base.What adopt with these products of present manufacturing is that raw material is compared with the static ingot, and its base material has better quality, lower advantages such as cost, so the alternative large-scale static ingot of pipe/circle base produced of this conticaster.Greatly improve blank product recovery rate, and then energy savings consumption, three waste discharge reduced.Bring bigger economic and social benefit to the owner.Construction period is short, reduced investment, and operating cost is low; Easy to operate, reliable; Satisfy production requirement fully.
Description of drawings
Fig. 1 is an especially big sectional plane round billet continuous casting machine structural plan of the present invention.
Fig. 2 is mold structure figure of the present invention.
Fig. 3 is a mould vibration device of the present invention.
The specific embodiment
Especially big sectional plane round billet continuous casting machine of the present invention mainly comprises: water mold 1, crystallizer electromagnetic stirring system 2, mould vibration device 3, holder dummy ingot device 4, protection soaking zone 5, knockout mechanism 6, deingot device 7 and secondary cooling chamber 8.
Water mold 1 cross section is very big, and crystallizer water tank 11 adopts strong cold junction structure design, meets the demands for guaranteeing the outlet shell thickness, and crystallizer water tank 11 adopts one to advance scene 2 one cold circulation standard.Design guarantees that fully strand and crystallizer face effectively contact the heat conduction to the tapering of crystallizer copper pipe 9 with the water seam.Keep the contact of strand, reduce possible crackle and blemish, as recessed scar until the crystallizer exit.The tapering of crystallizer copper pipe is to calculate according to the main steel grade solidification shrinkage parameter that has provided, determines the numerical value of coverage rate maximum, makes it can adapt to different steel grades and pouring condition requirement substantially.For guaranteeing water seam size, water jacket 10 requires that strict tolerance limits is arranged.The self-correcting of crystallizer energy is to guarantee that constant water seam is all arranged in all cases.Shell is equipped with rubber washer, and the copper pipe timing can move freely.The interruption of copper pipe tube wall temperature changes, and unsettled hot transmission will cause the cooling water boiling.This situation can cause permanent copper pipe deformation, and high wall temperature has also increased separating out of cooling water dissolving salt.Copper pipe and the design of copper pipe wall thickness are considered to avoid permanent deformation under the hot operation condition.Can repair 2 cycles of use after reaching projected life.
Double sufficient roller 13 below the crystallizer is that strand supports, and the purpose that adopts double sufficient roller is that the guiding dummy bar head leads after inserting crystallizer and strand being gone out crystallizer when going up dummy bar.If strand/dummy bar head does not have guiding, then may scratch crystallizer base copper tube wall, shorten crystallizer service life, and produce the casting billet surface defective.Facts have proved that the sufficient roller of correct use can reduce crystallizer wearing and tearing, be reduced under the different pouring conditions influence slab quality.
Secondary cooling apparatus is the coagulating property requirement according to the super-section strand, adopt the mode of narrow district secondary cooling, only establish sufficient roller district secondary cooling apparatus, water-accepting board 17 by special-purpose water channel in the crystallizer and vibrating device joins with outer water tube, spray equipment 12 uniform four draining atomizing nozzles carry out water yield control according to pipe poring rate and the steel grade of being poured into a mould.Strand design for super-section considers that the cooling of forcing to be cooled to by the heat transfer coefficient profile rule of cross-ventilation and radiation cooling strand is realized ideal according to crystallizer distributes.Reasonably intensity of cooling distributes and has determined liquid core length and casting billet surface mean temperature effectively.
Crystallizer electromagnetic mixing apparatus 2 is in order to the raising slab quality, and the flexibility of raising technological operation.The advantage of crystallizer electromagnetic agitation is: surface and subsurface inclusion number reduce, and make its distribution on the strand cross section more even.The centripetal force that the molten steel turn produces can make and be mingled with the center of accumulating in the molten steel, prevents to become entrained in the solidified shell; Can avoid dry slag, molten steel makes slag leave crystallizer wall, and the slag that accumulates in the meniscus center is easy to cast aside; For medium carbon steel and low-alloy steel, adopt diffusion and the minimizing center segregation peak value of electromagnetic agitation technology acceleration along axis concentration.Usually these steel grade center segregation degree are lower than high-carbon steel, thereby mainly are to guarantee good solid-phase construction, reduce center porosity.
The Fundamentals of considering when selecting vibration parameters are the negative slip time, and promptly the crystallizer movement velocity is moved the fast time interval than strand when crystallizer and strand move in the same way, and the relation of itself and vibration parameters is:
NST＝60/πf·arccos(VC×1000/πfs)
In the formula: f---per minute vibration number (l/min)
VC---poring rate (m/min)
S---stroke (mm)
Change frequency to guarantee the constant of negative slip time according to different poring rates, the result of variation is controlled automatically by continuous casting, and by computer recording.
The water-accepting board 17 of vibrating device is concentrated the quick connection that first and second cooling water is provided.
Holder dummy ingot device 4 is made up of rigid dummy bar, dummy bar head, elevating drive mechanism, guiding mechanism etc., top is that the dummy bar head with special shape is connected with rigid dummy bar, elevating drive mechanism adopts the frequency control motor transmission, and for preventing sideslip, periphery is provided with guiding mechanism.Device adopts the motor transmission, and frequency control is coordinated throwing by PLC control and other system, can be according to the technological requirement stepless time adjustment.Holder dummy ingot device 4 is used to open water operates and strand is drawn crystallizer and supported strand.
In order to guarantee that slab quality is provided with strand protection soaking zone 5, ejection when the assurance strand slowly is cooled to the technological requirement temperature.Soaking zone is provided with observation window and ejection door.
Knockout mechanism 6 is made up of equipment such as deingot device 7, switching mechanism and rollgangs, is used for strand and takes off ingot, upset, conveying.When holder dummy ingot device 4 throwings drop to desired location, start the ejection door and open, switching mechanism rises embraces base, and deingot device 7 enters dummy bar head is thrown off, and dummy bar continues to drop to initial position.Switching mechanism overturns together with pipe and pipe is placed and passes out to the burial pit slow cooling on the rollgang.
Secondary cooling chamber 8 is used for draining the steam that two cold water sprays produce in the casting process, and prevents that surrounding devices from stoping the molten steel splash when suffering the splash of water and bleed-out taking place.
The especially big sectional plane round billet continuous casting machine course of work of the present invention is such: when casting Φ 800mm pipe/circle base, middle hired car is opened to conticaster casting position, submersed nozzle and crystallizer center, and drop to assigned position, opening tundish stopper mechanism makes molten steel injection crystallizer 1 and reaches different liquid levels, mould vibration device 3, electromagnetic mixing apparatus 2, holder dummy ingot device 4 start automatically, and pipe will enter heat preservation zone by crystallizer 1, sufficient roller behind the cooling zone successively.Holder dummy ingot device 4 stops cast after dropping to assigned position, and slowly cools at protection soaking zone 5 and to require temperature, and the switching mechanism in the knockout mechanism 6 starts to hold and takes off ingot behind the pipe, turn to horizontal level and export the holding pit slow cooling to room temperature by output rod road.
Just can change casting blank specification by changing crystallizer and dummy bar head, can between Φ 800～Φ 1000, change.
Claims (6)
1. especially big sectional plane round billet continuous casting machine, conticaster is vertical, it is characterized in that: described conticaster is made up of crystallizer, mould vibration device, holder dummy ingot device, knockout mechanism, protection soaking zone, crystallizer electromagnetic mixing apparatus with sufficient roller; Being with sufficient roller crystallizer to contact with molten steel is copper pipe, and skin is the stainless steel water jacket, and outermost layer is the carbon steel shell, and it connects by last lower flange, and the crystallizer water tank adopts one to advance scene 2 one cold circulation standard; Mould vibration device is the non-sine powered version, can change frequency to guarantee the constant of negative slip time according to different poring rates; Casting blank of continuous casting machine diameter range Φ 800～Φ 1000mm.
2. especially big sectional plane round billet continuous casting machine according to claim 1 is characterized in that: the crystallizer copper pipe tapering is to draw according to the main steel grade solidification shrinkage calculation of parameter that has provided, and for guaranteeing water seam size, water jacket requires that strict tolerance limits is arranged.
3. especially big sectional plane round billet continuous casting machine according to claim 1 is characterized in that: the adjustable sufficient roller of densely covered down two rows of crystallizer copper pipe, sufficient roller district is provided with the water smoke spray equipment, carries out water yield control according to pipe poring rate and the steel grade of being poured into a mould.
4. especially big sectional plane round billet continuous casting machine according to claim 1 is characterized in that: mould vibration device adopts plate ring guiding, and two servomotor symmetries drive non-sinusoidal oscillation.
5. especially big sectional plane round billet continuous casting machine according to claim 1, it is characterized in that: knockout mechanism is made up of deingot device, switching mechanism and rollgang, be used for strand and take off ingot, upset, conveying, when holder dummy ingot device drops to desired location, switching mechanism rises, the deingot device enters the disengagement dummy bar head, and switching mechanism overturns together with pipe and places rollgang to send pipe.
6. especially big sectional plane round billet continuous casting machine according to claim 1 is characterized in that: crystallizer electromagnetic mixing apparatus external coil places the crystallizer middle and lower part, and its internal diameter can hold crystallizer and the sufficient roller of part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102339518A CN101433948B (en) | 2008-12-17 | 2008-12-17 | Round billet continuous casting machine with especially big sectional plane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102339518A CN101433948B (en) | 2008-12-17 | 2008-12-17 | Round billet continuous casting machine with especially big sectional plane |
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| Publication Number | Publication Date |
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| CN101433948A CN101433948A (en) | 2009-05-20 |
| CN101433948B true CN101433948B (en) | 2011-05-11 |
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| CN2008102339518A Expired - Fee Related CN101433948B (en) | 2008-12-17 | 2008-12-17 | Round billet continuous casting machine with especially big sectional plane |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773427B (en) * | 2012-06-12 | 2015-04-22 | 中冶京诚工程技术有限公司 | Continuous casting device and method of large-section round billet |
| CN102773428B (en) * | 2012-06-12 | 2014-11-26 | 中冶京诚工程技术有限公司 | Continuous casting device and method of large-section continuously cast billet |
| CN104084552B (en) * | 2014-06-27 | 2016-11-09 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of continuous cast method |
| CN107737661B (en) * | 2016-09-28 | 2019-05-17 | 安徽马钢张庄矿业有限责任公司 | Wet drum shape material scattering machine |
| CN108817332B (en) * | 2018-06-26 | 2020-04-21 | 辽宁科技大学 | Method for controlling solidification quality of large-specification medium-high alloy steel vertical continuous casting billet |
| CN115194111B (en) * | 2022-07-21 | 2024-04-30 | 武汉大西洋连铸设备工程有限责任公司 | Semi-continuous casting vertical casting process and equipment for large round billets to extra-large round billets |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598685Y (en) * | 2003-01-21 | 2004-01-14 | 李广 | Continuous casting crystallizer |
| CN2772683Y (en) * | 2005-03-23 | 2006-04-19 | 中冶连铸技术工程股份有限公司 | High-magnetic tooth crystallizer |
| CN201091907Y (en) * | 2007-09-21 | 2008-07-30 | 江阴兴澄特种钢铁有限公司 | Fai 600 over-size round mold assembly having magnetic stirrer |
| CN201353635Y (en) * | 2008-12-17 | 2009-12-02 | 马钢设计研究院有限责任公司 | Round billet conticaster with extra large section |
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2008
- 2008-12-17 CN CN2008102339518A patent/CN101433948B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598685Y (en) * | 2003-01-21 | 2004-01-14 | 李广 | Continuous casting crystallizer |
| CN2772683Y (en) * | 2005-03-23 | 2006-04-19 | 中冶连铸技术工程股份有限公司 | High-magnetic tooth crystallizer |
| CN201091907Y (en) * | 2007-09-21 | 2008-07-30 | 江阴兴澄特种钢铁有限公司 | Fai 600 over-size round mold assembly having magnetic stirrer |
| CN201353635Y (en) * | 2008-12-17 | 2009-12-02 | 马钢设计研究院有限责任公司 | Round billet conticaster with extra large section |
Non-Patent Citations (1)
| Title |
|---|
| 孙束.大截面圆坯连铸机增流改造与国产化.《重型机械》.2005,(第4期),52-55. * |
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Granted publication date: 20110511 |