CN106623881B - A kind of tundish of controllable lower flexure strain - Google Patents
A kind of tundish of controllable lower flexure strain Download PDFInfo
- Publication number
- CN106623881B CN106623881B CN201611231741.6A CN201611231741A CN106623881B CN 106623881 B CN106623881 B CN 106623881B CN 201611231741 A CN201611231741 A CN 201611231741A CN 106623881 B CN106623881 B CN 106623881B
- Authority
- CN
- China
- Prior art keywords
- tundish
- bottom plate
- application mechanism
- prestress application
- lower flexure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a kind of tundish of controllable lower flexure strain, belong to metallurgy industry steel-making continuous casting technical field.The present invention includes tundish main body and applying mechanism, and tundish main body includes tundish bottom plate and tundish side plate, and tundish floor level is set, and tundish bottom plate surrounding is provided with tundish side plate；It is arc-shaped in the middle part of the prestress application mechanism to be bent upwards；The prestress application mechanism is installed on tundish bottom plate lower part, prestress application mechanism middle part and tundish contacts baseplate, and applies prestressing force to tundish bottom plate.Prestress application mechanism of the present invention offsets the prestressing force that tundish bottom plate applies with the gravity of molten steel, control tundish lower flexure strain, middle water containing opening in production process is kept not shift with mold gap, it ensure that middle water containing opening and the effective centering of mold gap, improve the service life of tundish and even pour heat, improve the production efficiency of continuous casting.
Description
Technical field
The present invention relates to metallurgy industry steel-making continuous casting technical field, more specifically, being related to a kind of controllable lower flexure strain
Tundish.
Background technology
Tundish is the refractory material containers used in Ferrous Metallurgy production procedure, and tundish receives to pour what is got off from ladle
Molten steel, then be assigned to by middle water containing opening in each crystallizer.Tundish is the pass formed a connecting link in conticaster running gate system
Key link, it, for receiving ladle molten steel and molten steel being injected into crystallizer, uses tundish between ladle and crystallizer
The purpose is to reduce molten steel static pressure, make steel levelling steady, reduce impact and agitation of the steel stream to Mold, tundish
Molten steel can be shunted by multiple mouths of a river, realize the direct casting of a machine multithread.Tundish is as in continuous casting production process
Important reactor, be either smoothed out for continuous casting operation, or for ensure molten steel continuous casting quality, all have can not
The effect of ignorance.
There are two support levels at tundish both ends respectively, except other positions of support level tundish are all in vacant state；When
The length of tundish is often longer when the fluxion of conticaster is more, and the tundish for carrying molten steel at this time is easy for downwarp occur showing
As, particularly multiple-strand caster tundish (herein signified multiple-strand caster tundish be 7-10 streams tundish).It is middle
The downwarp of bag can cause tundish overall deformation, prevent middle water containing opening with mold gap from effective centering, and influence molten steel
Inject position during crystallizer so that liquid level fluctuation of crystallizer is big, and uneven to copper pipe erosive wear in crystallizer, Jin Erying
Continuous casting billet quality and crystallizer service life of equipment are rung, and reduces production efficiency；When serious tundish downwarp cause steel plate cracking,
Molten steel leaks, and causes major industrial accident.
Particularly when producing good steel grade (such as steel alloy, bearing steel, spring steel), generally use special substance
The long casing that refractory material is made, is sleeved on middle water containing opening, under long casing mouth insertion crystallizer inside, make molten steel not with outside
Air contact, avoids secondary oxidation；If error caused by tundish downwarp at this time will amplify several times by long casing, make under long casing
Mouth may collide with crystallizer inner wall, easy scaling loss equipment, and produce bleed-out phenomenon.
Existing technical staff solves the above problems often through the method for increase tundish lining, but increases tundish
Liner is simply tried to stop water from boiling by skimming it off and pouring it back, and can only temporarily delay the time of overall tundish downwarp on the original basis, it is impossible to is fundamentally come
This problem is solved, and causes refractory material expense big, increases the production cost of enterprise.
It is entitled such as innovation and creation in addition, also have by supporting tundish in the prior art to solve the above problems：One
Kind control downwarping of intermediate tank device (application number：201110165307.3 the day for announcing：2014.02.05), which uses I-shaped
Type crossbeam and column integrated structure, the both ends of crossbeam are respectively welded at the top of the high leg in intermediate tundish carriage both ends, so that and pans
Car is integrally formed, and is supported using the both ends of the device, and centre is transferred force to intermediate tundish carriage both ends by concentrfated load method
On track girder, on the other hand, the meausring apparatus of pans is installed on the high leg track girder of intermediate tundish carriage；The device for prolonging
Pans work online the time, so that the refractory material for saving tundish lining uses, improve the time of on-line continuous cast.
But this method causes equipment and maintenance cost increase.Therefore, tundish lower flexure strain in order to prevent, ensures the continuous of continuous casting
Property, production efficiency is improved, urgent need develops a kind of tundish for having and preventing lower flexure strain.
The content of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the shortcomings of that lower flexure strain easily occurs in continuous casting production in the prior art, there is provided one
The tundish of the controllable lower flexure strain of kind, can control tundish lower flexure strain, can further keep among in production process
Water-coating port does not shift with mold gap, and improves the service life of tundish.
2. technical solution
To reach above-mentioned purpose, technical solution provided by the invention is：
A kind of tundish of controllable lower flexure strain of the present invention, including tundish main body, during which includes
Between bag bottom plate and tundish side plate, tundish floor level sets, and tundish bottom plate surrounding is provided with tundish side plate；Prestressing force
Applying mechanism, prestress application mechanism middle part is arc-shaped to be bent upwards；The prestress application mechanism is installed on tundish
Bottom plate lower part, prestress application mechanism middle part and tundish contacts baseplate, and apply prestressing force to tundish bottom plate.
Be in contact at the top of the arc of prestress application mechanism with tundish bottom plate, arc top to tundish bottom plate apply to
On prestressing force.
Prestress application mechanism includes Concrete Filled unit and deformed bar, is filled out in the Concrete Filled unit
Filled with heat resistance concrete layer, the Concrete Filled unit is equipped with steel bar sleeve, and deformed bar is installed on steel bar sleeve
It is interior.
Tundish side plate bottom is provided with connection protrusive board, and connection protrusive board protrudes from tundish bottom plate, and the prestressing force is applied
Mechanism is added to be fixedly installed on connection protrusive board.
The prestress application mechanism end is provided with positioning stiffener, is provided with the positioning stiffener with connecting
Connect the locating slot that protrusive board is adapted.
The both ends of the deformed bar are provided with prestressed anchor.
The heat resistance concrete layer includes cement, refractory aggregate, filler, additive, antirust agent, water-reducing agent and water.
Heat resistance concrete layer each component is formed according to following mass parts：
The additive includes prodan and waterglass.
3. beneficial effect
Using technical solution provided by the invention, compared with existing known technology, there is following remarkable result：
(1) tundish of a kind of controllable lower flexure strain of the invention, sets prestressing force to apply in the bottom of tundish bottom plate
Add mechanism, and with tundish contacts baseplate at the top of the arc of prestress application mechanism, prestress application mechanism is to tundish bottom plate
Apply prestressing force, after molten steel is added into tundish, under molten steel gravity, downward pressure can be applied to tundish bottom plate
Power, prestress application mechanism offset the prestressing force that tundish bottom plate applies with the gravity of molten steel, control tundish downwarp
Deformation, keeps middle water containing opening in production process not shift with mold gap, ensure that middle water containing opening and crystallizer
The effective centering in the mouth of a river, improves the service life of tundish and even pours heat, improve the production efficiency of continuous casting；
(2) tundish of a kind of controllable lower flexure strain of the invention, arc top and the centre of prestress application mechanism
Bag bottom plate is in contact, and applies prestressing force to tundish bottom plate at the top of arc, gap is provided between arched arm and tundish bottom plate,
I.e. arched arm does not limit biography of the heat between tundish bottom plate and prestress application mechanism with tundish contacts baseplate, gap
Thermal process, prevents heat to be directly transferred to prestress application mechanism by tundish bottom plate, so as to avoid prestress application mechanism temperature
Spend height；
(3) a kind of tundish of controllable lower flexure strain of the invention, the surrounding end set of prestress application mechanism are determined
Position stiffener, positions and is provided with locating slot on stiffener, which is adapted with being connected protrusive board, tundish side plate bottom
Connection protrusive board is provided with, connection protrusive board is engaged with above-mentioned locating slot, and it is convex that prestress application mechanism is fixedly installed in connection
On plate, the fixed effect of prestress application mechanism is strengthened by cooperation of the locating slot with being connected protrusive board, by connection protrusive board installation
In locating slot, locating slot has extruding position-limiting action to connection protrusive board, prevents from connecting protrusive board and prestress application under hot conditions
Mechanism junction deforms；
(4) tundish of a kind of controllable lower flexure strain of the invention, the component proportion of heat resistance concrete layer creativeness, carries
The high high-temperature resistant result of prestress application mechanism, and good toughness is made it have, wherein C60 portland cements enhance it
With the grip force of deformed bar, ensure that there are good rigidity and intensity in whole prestress application mechanism；Filler is that granularity is 3
~10mm continuous grading particulate materials, filler are closely knit with the use of that can obtain with C60 portland cements, refractory aggregate, additive
Concrete, reduce porosity, improve the intensity of concrete, and improve the toughness of concrete, particularly make concrete upper
It will not be crushed during scratching deformation, the waterglass and prodan in additive enhance prestressing force by appropriate cooperation
There is preferably storage to receive the ability of stress for the cohesive force of each component in applying mechanism, prestress application mechanism.
Brief description of the drawings
Fig. 1 is the cross-sectional of the tundish of the present invention；
Fig. 2 is the front view of the tundish of the present invention；
Fig. 3 is the prestress application mechanism Structure of cross section schematic diagram of the present invention；
Fig. 4 is fit structure schematic diagram of the prestress application mechanism with tundish main body of the present invention.
Label declaration in schematic diagram：
100th, tundish main body；110th, tundish bottom plate；111st, middle water containing opening；120th, tundish side plate；121st, connect
Protrusive board；
200th, prestress application mechanism；201st, at the top of arc；202nd, arched arm；210th, Concrete Filled unit；211st, water
Mouth corresponding opening；212nd, steel bar sleeve；213rd, heat resistance concrete layer；214th, stiffener is positioned；220th, deformed bar；221、
Prestressed anchor.
Embodiment
Attached drawing hereafter with reference to the detailed description of the exemplary embodiment of the present invention, which forms one of description
Point, in the figure the enforceable exemplary embodiment of the present invention is shown as example.Although these exemplary embodiment quilts
Fully describe in detail so that those skilled in the art can implement the present invention, it is to be understood that can realize other embodiment and
Can without departing from the spirit and scope of the present invention to the present invention various changes can be made.Hereafter to the embodiment of the present invention
More detailed description is not limited to required the scope of the present invention, and just to be illustrated and do not limit pair
The description of the features of the present invention and feature, to propose to perform the best mode of the present invention, and is sufficient so that those skilled in the art
It can implement the present invention.Therefore, the scope of the invention is only defined by the appended claims.
Hereafter detailed description of the present invention and example embodiment can be more fully understood with reference to attached drawing, wherein the present invention
Element and feature are identified by reference numeral.
Embodiment 1
With reference to shown in Fig. 1-4, a kind of tundish of controllable lower flexure strain of the invention, including 100 He of tundish main body
Prestress application mechanism 200, tundish main body 100 include tundish bottom plate 110 and tundish side plate 120, tundish bottom plate 110
Horizontally disposed, 110 surrounding of tundish bottom plate is provided with tundish side plate 120, tundish bottom plate 110 and 120 structure of tundish side plate
Into the steel in water container (as shown in Figure 1) of upper opening.Middle water containing opening 111, prestress application are offered on tundish bottom plate 110
Also mouth of a river corresponding opening 211 is offered in mechanism 200, which is correspondingly arranged with middle water containing opening 111.
The above-mentioned middle part of prestress application mechanism 200 is arc-shaped to be bent upwards, at the top of the arc of prestress application mechanism 200
201 are in contact with tundish bottom plate 110, and 201 apply prestressing force, arched arm 202 and centre to tundish bottom plate 110 at the top of arc
Gap is provided between bag bottom plate 110, i.e. arched arm 202 does not contact (as shown in Figure 4) with tundish bottom plate 110.The gap limits
Diabatic process of the heat between tundish bottom plate 110 and prestress application mechanism 200 has been made, has prevented heat directly by tundish
Bottom plate 110 is transferred to prestress application mechanism 200, so as to avoid 200 temperature of prestress application mechanism excessive, if prestressing force is applied
Add 200 temperature of mechanism excessive, it will cause the outside positioning babinet softening transform of prestress application mechanism 200, so as to influence pre- answer
The effect of power applying mechanism 200.
Prestress application mechanism 200 is installed on 110 lower part of tundish bottom plate (as shown in Figure 3), prestress application mechanism 200
Middle part is contacted with 110 bottom of tundish bottom plate, and applies prestressing force to tundish bottom plate 110.More specifically install as follows：In advance should
200 end of power applying mechanism is positioning stiffener 214, i.e., adds in the surrounding end set positioning of prestress application mechanism 200
Strong component 214, positions and is provided with locating slot (as shown in Figure 4) on stiffener 214, which fits with being connected 121 phase of protrusive board
Match somebody with somebody.120 bottom of tundish side plate is provided with connection protrusive board 121, and connection protrusive board 121 protrudes from tundish bottom plate 110, connects protrusive board
121 are engaged with above-mentioned locating slot, and prestress application mechanism 200 is fixedly installed on connection protrusive board 121.Pass through positioning
Cooperation of the groove with being connected protrusive board 121 strengthens the fixed effect of prestress application mechanism 200, and it is fixed that connection protrusive board 121 is installed on
Position groove, locating slot have extruding position-limiting action to connection protrusive board 121, prevent that protrusive board 121 is connected under hot conditions to be applied with prestressing force
200 junction of mechanism is added to deform.
Prestress application mechanism 200 includes Concrete Filled unit 210 and deformed bar 220, Concrete Filled unit
210 are filled with heat resistance concrete layer 213, and the Concrete Filled unit 210 is equipped with steel bar sleeve 212, deformed bar
220 are installed in steel bar sleeve 212 (as shown in Figure 2).The both ends of deformed bar 220 are provided with prestressed anchor 221, in advance should
Power anchorage 221 is used for tension deformed bar 220 and is scratched on keeping, and keeps prestressing force in deformed bar 220.
Wherein：The material of steel bar sleeve 212 is steel Q235, the material HRB500 of deformed bar 220.Tundish bottom plate
Relation between 212 center spacing of 110 length and steel bar sleeve, 220 diameter of deformed bar is as shown in table 1.Tundish bottom plate
Relation between 200 deformation quantity of 110 length and prestress application mechanism is as shown in table 2.Wherein deformation quantity refers to prestress application
The distance between 201 220 axis of deformed bar, that is, scheme at the top of 220 axis of deformed bar and arc of 200 end of mechanism
D in 4.
1 tundish floor length of table and casing, the preparation relation of reinforcing bar
Relation between 2 tundish floor length of table and prestress application mechanism deformation quantity
There are two support levels at the both ends of tundish respectively, hanging between two support levels of tundish, in multiple-strand caster
Between wrap and just have very big span, tundish bottom plate 110 will show as downwarp phenomenon under the action of molten steel gravity, particularly
Under molten steel high temperature action, 110 lower flexure strain situation of tundish bottom plate is more exacerbated.
In order to overcome 110 lower flexure strain of tundish bottom plate, under the teaching of prior art problem, those skilled in the art
Naturally tundish bottom plate 110 can be arranged to scratch shape, such as patent application：On scratch formula pans (application number：
201320419273.0 authorized announcement date is：2013.12.25), this technical solution is also opening in existing technical problem
Under showing, conventional selection that those skilled in the art can make.Formula pans are scratched on this by bottom plate, mouth face flange and waist hoop
Scratch a certain amount of on center portion position, forward and backward coaming plate uses sector structure, and integrally in shape is scratched on center, it can temporarily be prevented pans
The lower flexure strain of pans.But further investigation revealed that, it is middle although the technology temporarily improves service life
Bag bottom plate 110 is still easily damaged, which annoyings technical staff always, and technical staff does not understand after repeated thinking.
In contrast, the inventor by long-time present application is creative is horizontally disposed with tundish bottom plate 110, i.e.,
Keep identical with the tundish bottom plate 110 of original tundish, prestressing force is set in the bottom of tundish bottom plate 110 on this basis
Applying mechanism 200, the middle part of the prestress application mechanism 200 is arc-shaped to be bent upwards, and the arched top of prestress application mechanism 200
Portion 201 is contacted with tundish bottom plate 110, and prestress application mechanism 200 applies prestressing force to tundish bottom plate 110.At this time, it is middle
Bag bottom plate 110 can produce under the action of prestress application mechanism 200 scratches deformation or scratches the trend of deformation on producing, when to
After adding molten steel in tundish, under molten steel gravity, downward pressure can be applied to tundish bottom plate 110, when molten steel
When pressure is equal to the upward prestressing force of prestress application mechanism 200, tundish bottom plate 110 would be at one and normally stretch at this time
Exhibition state, the prestressing force that prestress application mechanism 200 applies tundish bottom plate 110 are offseted with the gravity of molten steel, so that
Tundish bottom plate 110 is obtained just at not stressing under (or perhaps being subject to smaller with joint efforts) state, deformation quantity is reduced, improves
The service life of tundish and heat even is poured, and prevent the downwarp of tundish to cause tundish overall deformation, in making
Between water-coating port 111 and crystallizer alignment degree suitable for reading keep good, position when avoiding influencing molten steel injection crystallizer, prevents from crystallizing
Device liquid level fluctuates.
Although the patent it can be seen from above-mentioned analysis：On scratch formula pans and seem similar to present application, but in fact two
Technical solution, the thinking of solution technical problem of person is entirely different, and has also reached different technique effects.Therefore, above scratch
Formula pans and present application are entirely different, and do not provide any technical inspiration of application case technical solution, therefore phase
There is unobviousness for prior art, and improve with prominent substantive distinguishing features and significantly.
In addition, since the top of prestress application mechanism 200 is contacted with tundish bottom plate 110, then prestress application machine
There are portion gap between the arched arm 202 and tundish bottom plate 110 of structure 200, which limits heat in tundish bottom plate
Diabatic process between 110 and prestress application mechanism 200, prevents heat to be directly transferred to prestressing force by tundish bottom plate 110
Applying mechanism 200, so that avoid 200 temperature of prestress application mechanism excessive, if 200 temperature of prestress application mechanism is excessive,
The prestress application effect of prestress application mechanism 200 is influenced by thermal softening it will cause deformed bar 220 therein.This
And the technical problem that the prior art is not concerned with, while the technical problem is not found, those skilled in the art
It will not more go to solve the technical problem.
Effect and theory based on present application, the inventor of present application further study patent：On scratch formula pans
(application number：201320419273.0) technical solution, has just been found out and has easily been occurred using the tundish bottom plate 110 of the technical solution
The reason of damage.Concrete analysis is as follows：On to scratch formula pans be that it is appropriate to form by being scratched on tundish bottom plate 110 itself
Anti-deformation, when compression, temperature distortion, reserved reversible deformation can reduce or offset the downwarp of tank body, that is to say, that the skill
Art is to overcome lower flexure strain of the molten steel to tundish bottom plate 110 by reversible deformation, this is had necessarily really using initial stage
Effect；But during constantly use, when molten steel constantly applies pressure to tundish bottom plate 110, tundish bottom plate
110 is more fragile.When the upward original deflection of tundish bottom plate 110 is δ, then in the molten steel in tundish overcomes just
Between bag bottom plate 110 on scratch when deforming and the tundish bottom plate 110 is kept straight, it is original relative to tundish bottom plate 110 at this time
State, the absolute deformation amount of tundish bottom plate 110 is │ δ │ at this time, that is to say, that although tundish bottom plate 110 is in water at this time
Level state, but the stress for forcing tundish bottom plate 110 to deform is remained in tundish bottom plate 110 at this time, these stress are compeled
Tundish bottom plate 110 is set to be damaged.Due to refractory material degraded toughness at high operating temperatures, under the action of extruding force,
Force the refractory material of tundish bottom plate 110 mutually to extrude and produce damage, easily occur so as to cause tundish bottom plate 110
Damage.In addition, if the mouth of a river and the mold gap centering of formula pans are scratched during design on this, then in molten steel overcomes just
Between bag bottom plate 110 on scratch when deforming and the tundish bottom plate 110 is kept straight, the absolute deformation amount of tundish bottom plate 110 is still
For │ δ │, opposite offset can equally occur for the mouth of a river of tundish bottom plate 110 at this time, and can equally make middle water containing opening 111 with
Mold gap is unable to centering, that is to say, that even if the technical solution solves the technical problem scratched on tundish bottom plate 110,
But still it is difficult to solve the technical problem that middle water containing opening 111 is difficult to centering with mold gap.
Billet caster is flowed to certain Iron And Steel Co., Ltd the second steel mill 1#8 machines 8 to transform, tundish bottom plate 110
Length is 11300mm, therefore according to Tables 1 and 2, selection 212 center spacing of steel bar sleeve is 120mm, steel bar sleeve 212
It is a diameter ofDeformed bar 220 is a diameter ofThe deflection for designing prestress application mechanism 200 is D=
65mm, the prestressing force of design prestress application mechanism 200 is 450MPa.
The outer surface of deformed bar 220 for sizing babinet, the sizing babinet be all round closure body structure, the sizing
Steel bar sleeve 212 is provided with babinet, sizing babinet is additionally provided with slurry input end and exhaust outlet, and exhaust outlet is used to discharge air.
A kind of assembly method of the tundish prestress application mechanism of the present embodiment：
(1) concrete is prepared
Refractory concrete each component quality is as follows：Cement 45kg, refractory aggregate 35kg, filler 10kg, additive 13kg,
Antirust agent 1kg, water-reducing agent 1kg, water 5kg obtain mixture, and add mixture into 10~20min of stirring in mixer, stir
Refractory concrete slurry is obtained after mixing uniformly；
Wherein above-mentioned cement is C60 portland cements, and filler is is made of copper powder and rubble, and copper powder and rubble
Ratio is 1:1, the copper powder is deoxidation copper powder, and filler granularity is the particulate material of 3~10mm continuous gradings, the addition
Agent is made of waterglass and prodan, and quality is respectively waterglass 8kg, prodan 5kg.Refractory aggregate is by zirconium matter fire proofed wood
Material and high alumina refractories are composed, ratio 1:1.Wherein high alumina refractories is：The triumphant happy zirconium matter fire resisting of Yixing City
The high alumina castable of Materials Co., Ltd；The zirconia refractory is Yixing City Kai Yue zirconia refractories Co., Ltd
Zircon ramming material.
Wherein the main component of deoxidation copper powder is Cu-Ag alloys, and deoxidation copper powder can substantially increase at high operating temperatures
Heat endurance, and cause heat resistance concrete there is good creep-resistant property and hot toughness, avoid prestress application mechanism 200
Damage.
(2) casting prestressed applying mechanism
A, the slurry input end of sizing babinet is closed, exhaust outlet is connected with vacuum pump, and sizing babinet take out true
It is empty；
B, exhaust outlet is closed, the pipeline of heat resistance concrete slurry is connected with slurry input end, heat resistance concrete slurry pours
Build in shaping box body, 20-30min is kept after compacting；
C, conserved 2 days in 15-25 DEG C of environment after the completion of pouring；When the intensity of heat resistance concrete during maintenance
When reaching 485 ± 5MPa, deformed bar 220 is installed in steel bar sleeve 212, and prestressed anchorage 221, using thousand
Jin top prestressed reinforcement of tensioning 220, and prestress application mechanism 200 is bent and is produced amount of deflection, and cause deflection
For D=65mm, and deformed bar 220 is fixed using prestressed anchor 221；And the injection hole in steel bar sleeve 212
Road grouting agent, the grouting agent are the grouting agent of not gram scientific and technological Suzhou Co., Ltd production；Then it is further continued for maintenance 2-3 days；
(3) installation, which coordinates, applies prestressing force
A, protrusive board 121, the connection protrusive board 121 are connected in the lower part installation of the tundish side plate 120 of finished product tundish
It is obliquely installed along the incline direction of tundish side plate 120, that is, connects protrusive board 121 with tundish side plate 120 in same inclination
In plane；
B, locating slot is cut on the positioning stiffener 214 of prestress application mechanism 200, and locating slot is with being connected protrusive board
121 are engaged, i.e., locating slot is equally obliquely installed, and angle of inclination is identical with 121 angle of inclination of connection protrusive board；
C, protrusive board 121 will be connected to be engaged with the locating slot on positioning stiffener 214, so that by prestress application mechanism
200 are installed on the lower part of tundish main body 100, and the arc top 201 of 200 arc-shaped bend of prestress application mechanism and tundish
Bottom plate 110 is in contact, and applies upward prestressing force to tundish bottom plate 110, then will connection protrusive board 121 and positioning stiffener
214 are welded and fixed, and complete to install.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and has reached 62 stoves.To it after tundish cooling
Shape particularly bottom box-shaped steel plate structure finds that undesirable modeling does not occur in the tundish of the present embodiment after measuring analysis
Property deformation, overall structure is also without there is serious lower flexure strain phenomenon.
Comparative example 1
It is 11300mm that original design 8, which flows 110 length of tundish bottom plate, and it is 35 stoves that heat pours in company, and tundish overall structure goes out
Serious deformation is showed, it has to which offline trimming is carried out to tundish.Then divest resistance to material, to deform serious steel plate into
Row cutting, welds new steel plate again, repair take altogether 18 it is small when.
Compared to the tundish of 1 original design of comparative example, company pours heat and is increased to 62 stoves, centre using the present invention for 35 stoves
The problem of bag effectively overcomes tundish lower flexure strain, so as to extend tundish active time, ensures the company of continuous casting
Continuous property, improves production efficiency, has notable overall economic efficiency.Its reason is：
Upward prestressing force, prestress application mechanism are applied to tundish bottom plate 110 by prestress application mechanism 200
The prestressing force that 200 pairs of tundish bottom plates 110 apply is offseted with the gravity of molten steel, is reduced deformation quantity, is reduced tundish
Lower flexure strain；In addition, by prestress application mechanism 200 and tundish bottom plate 110, the independent performance of tundish bottom plate 110 carries
Effect, prestress application mechanism 200, which plays, applies prestressed effect, and steel should be born so as to avoid tundish bottom plate 110
Water gravity is oppressed, and the heating power that subject high-temperature molten steel again corrodes, and reduces shearing of the mechanical force to tundish bottom plate 110, from
Prevent molten steel gravity from making 110 lower flexure strain of tundish bottom plate；In addition, prestress application mechanism 200 is it also avoid in the condition of high temperature
Lower offer prestressing force, improves the working environment of prestress application mechanism 200, improves the use of prestress application mechanism 200
Service life.
In addition, the component proportion that heat resistance concrete layer 213 is creative, had both improved the resistance to height of prestress application mechanism 200
Temp effect, and good toughness is made it have, wherein C60 portland cements enhance its grip force with deformed bar 220,
Ensureing that there are good rigidity and intensity in whole prestress application mechanism 200, filler is that granularity is 3~10mm continuous gradings, with
C60 portland cements, refractory aggregate, additive are with the use of can obtain closely knit concrete, it is possible to reduce porosity, is improved mixed
Coagulate the intensity of soil, and improve the toughness of concrete, particularly make prestress application mechanism 200 it is upper scratch deformation during not
It can crush.Waterglass and prodan in additive enhance each group in prestress application mechanism 200 by appropriate cooperation
The cohesive force divided so that it is unlikely to broken division under stress, and pre- under waterglass and prodan collective effect
There is stress applying mechanism 200 preferably storage to receive the ability of stress.
Embodiment 2
With embodiment 1, difference is the substance of the present embodiment：Certain company the first steel mill 3#10 machines 10 are flowed
Billet caster is transformed, and 110 length of tundish bottom plate is 12600mm, therefore according to Tables 1 and 2, selects reinforcing bar
212 center spacing of casing for 100mm, steel bar sleeve 212 it is a diameter ofDeformed bar 220 is a diameter of
The deflection for designing prestress application mechanism 200 is D=70mm, and the prestressing force of design prestress application mechanism 200 is 500MPa.
The a kind of of the present embodiment applies prestressed technique to tundish bottom plate：
Heat resistance concrete each component is formed according to following mass parts：Cement 43kg, refractory aggregate 25kg, filler 5kg, adds
Add agent 8kg, antirust agent 1kg, water-reducing agent 1kg, water 5kg；Wherein above-mentioned cement is C60 portland cements, the filler
To be made of copper powder, converter wind quenching slag, vanadium titano-magnetite, borax and nickel minerals tailing, the mass percent of filler each component is：
Copper powder：40%th, converter wind quenching slag：20%th, vanadium titano-magnetite：20%th, borax:10%th, nickel minerals tailing:10%.The copper powder
For deoxidation copper powder, filler granularity is the particulate material of 3~10mm continuous gradings, and filler further increases prestress application machine
The high temperature toughness of structure 200, avoids high temperature so that prestress application mechanism 200 crushes, its reason is probably in filler
Titanium, the element such as nickel improve the stability of high temperature solid solution body.
Additive is made of waterglass and prodan, and waterglass 5kg, prodan 3kg.Refractory aggregate is resistance to by zirconium matter
Fiery material, high alumina refractories and casting material reinforced by steel fibre are composed, and ratio is followed successively by 2:2:1, wherein steel fibre increases
Strong castable is the product of Yixing City Kai Yue zirconia refractories Co., Ltd.The water-reducing agent is the triumphant building materials of Shandong Hua Weiyin
The high performance water reducing agent of polyocarboxy acid of Science and Technology Co., Ltd..Antirust agent is the clear board antirust agent of cloud.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and reaches 50 stoves.To outside it after tundish cooling
Shape particularly bottom box-shaped steel plate structure finds that undesirable plasticity does not occur in the tundish of the present embodiment after measuring analysis
Deformation, overall structure is also without the serious lower flexure strain phenomenon of appearance.
Comparative example 2
Original design 3#10 machines 10 flow billet caster, and 110 length of tundish bottom plate is 12600mm, and company pours heat and is
There is serious plastic deformation in 28 stoves, tundish overall structure, it has to carry out offline trimming to tundish.
Compared to the tundish of 2 original design of comparative example, company pours heat and is increased to 50 stoves, centre using the present invention for 28 stoves
The problem of bag effectively overcomes tundish lower flexure strain, so as to extend tundish active time, ensures the company of continuous casting
Continuous property, improves production efficiency.
Embodiment 3
With embodiment 1, difference is the substance of the present embodiment：
Heat resistance concrete each component is formed according to following mass parts：Cement 40kg, refractory aggregate 30kg, filler 8kg, adds
Add agent 15kg, antirust agent 1kg, water-reducing agent 1kg, water 5kg；Wherein above-mentioned cement is C60 portland cements, the filler
To be made of copper powder, blast furnace slag, rubble, ratio 1:1:1, the copper powder is deoxidation copper powder, and filler granularity is 3~10mm
The particulate material of continuous grading, the additive are made of waterglass and prodan, and quality is respectively waterglass 9kg, fluorine silicon
Sour sodium 6kg.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and reaches 58 stoves.The tundish of the present embodiment is not
There is undesirable plastic deformation, overall structure is also without the serious lower flexure strain phenomenon of appearance.
Embodiment 4
With embodiment 1, difference is the substance of the present embodiment：
Heat resistance concrete each component is formed according to following mass parts：Cement 40kg, refractory aggregate 30kg, filler 8kg, adds
Add agent 15kg, antirust agent 1kg, water-reducing agent 1kg, water 5kg；Wherein above-mentioned cement is C60 portland cements, the filler
To be made of copper powder, blast furnace slag, rubble, oolitic hematite, diatomite, nickel minerals tailing；The mass percent of filler each component
For：Copper powder：30%th, blast furnace slag：20%th, rubble：20%th, oolitic hematite：10%, diatomite：10%, nickel minerals tailing：10%.
The copper powder is deoxidation copper powder, and filler granularity is the particulate material of 3~10mm continuous gradings, and the additive is by waterglass
Formed with prodan, its quality is respectively waterglass 9kg, prodan 6kg.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and reaches 63 stoves.The tundish of the present embodiment is not
There is undesirable plastic deformation, overall structure is also without the serious lower flexure strain phenomenon of appearance.
Embodiment 5
With embodiment 1, difference is the substance of the present embodiment：
Heat resistance concrete each component is formed according to following mass parts：Cement 40kg, refractory aggregate 30kg, filler 8kg, adds
Add agent 15kg, antirust agent 1kg, water-reducing agent 1kg, water 5kg；Wherein above-mentioned cement is C60 portland cements, the filler
To be made of copper powder, blast furnace slag, rubble, oolitic hematite, diatomite, nickel minerals tailing, the mass percent of filler each component
For：Copper powder：30%th, blast furnace slag：20%th, rubble：20%th, oolitic hematite:10%, diatomite：10%, nickel minerals tailing：10%.
The copper powder is deoxidation copper powder, and filler granularity is the particulate material of 3~10mm continuous gradings, and the additive is by waterglass
Formed with prodan, its quality is respectively waterglass 9kg, prodan 6kg.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and reaches 56 stoves.The tundish of the present embodiment is not
There is undesirable plastic deformation, overall structure is also without the serious lower flexure strain phenomenon of appearance.
Embodiment 6
With embodiment 1, difference is the substance of the present embodiment：
Heat resistance concrete each component is formed according to following mass parts：Cement 43kg, refractory aggregate 25kg, filler 5kg, adds
Add agent 8kg, antirust agent 1kg, water-reducing agent 1kg, water 5kg；Wherein above-mentioned cement is C60 portland cements, the filler
To be made of copper powder, blast furnace slag, vanadium titano-magnetite, oolitic hematite, nickel minerals tailing, the mass percent of filler each component
For：Copper powder：40%th, blast furnace slag：10%th, vanadium titano-magnetite：20%th, oolitic hematite：20%th, nickel minerals tailing：10%.Described
Copper powder is deoxidation copper powder, and filler granularity is the particulate material of 3~10mm continuous gradings, and the additive is by waterglass and fluorine silicon
Sour sodium composition, quality is respectively waterglass 9kg, prodan 6kg.
When carrying out continuous casting using the tundish of the present embodiment, company pours heat and reaches 65 stoves.The tundish of the present embodiment is not
There is undesirable plastic deformation, overall structure is also without the serious lower flexure strain phenomenon of appearance.
The present invention is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that it can not take off
Various modifications and variations are carried out in the case of from the scope of the present invention being defined by the following claims.Detailed description and drawings
Should be to be considered only as it is illustrative and not restrictive, if there is any such modifications and variations, then they all will
Fall into the scope of the present invention described here.In addition, background technology is intended to Development Status and meaning in order to illustrate this technology,
It is not intended to limit the application field of the present invention or the application and the present invention.
More specifically, although the exemplary embodiment of the present invention has been described herein, but the invention is not limited in
These embodiments, but including those skilled in the art according to above detailed description it can be appreciated that it is modified, omit,
Any and whole embodiments of (such as between each embodiment) combination, adaptive change and/or replacement.In claim
Restriction can widely be explained according to the language used in claim, and be not limited in foregoing detailed description or in reality
The example described during this application is applied, these examples are considered as nonexcludability.For example, in the present invention, term is " preferably
Ground " not exclusively, preferably, here it means that " but be not restricted to that ".It is in office where method or process claims
In any step for enumerating can in any order perform and be not limited to the order proposed in claim.Therefore, it is of the invention
Scope should only be determined by appended claims and its legal equivalents, rather than by descriptions and examples given above Lai
Determine.
Claims (8)
- A kind of 1. tundish of controllable lower flexure strain, it is characterised in that：IncludingTundish main body（100）, the tundish main body（100）Including tundish bottom plate（110）With tundish side plate（120）, in Between bag bottom plate（110）It is horizontally disposed, tundish bottom plate（110）Surrounding is provided with tundish side plate（120）；Tundish side plate （120）Bottom is provided with connection protrusive board（121）, connect protrusive board（121）Protrude from tundish bottom plate（110）, prestress application machine Structure（200）It is fixedly installed in connection protrusive board（121）On；Prestress application mechanism（200）, the prestress application mechanism（200）Middle part is arc-shaped to be bent upwards；The prestress application mechanism（200）It is installed on tundish bottom plate（110）Lower part, prestress application mechanism（200）In Portion and tundish bottom plate（110）Contact, and to tundish bottom plate（110）Apply prestressing force.
- A kind of 2. tundish of controllable lower flexure strain according to claim 1, it is characterised in that：Prestress application mechanism （200）Arc at the top of（201）With tundish bottom plate（110）It is in contact, at the top of arc（201）To tundish bottom plate（110）Apply Add upward prestressing force.
- A kind of 3. tundish of controllable lower flexure strain according to claim 2, it is characterised in that：Prestress application mechanism （200）Including Concrete Filled unit（210）And deformed bar（220）, the Concrete Filled unit（210）Interior filling There is heat resistance concrete layer（213）, the Concrete Filled unit（210）It is equipped with steel bar sleeve（212）, deformed bar （220）It is installed on steel bar sleeve（212）It is interior.
- A kind of 4. tundish of controllable lower flexure strain according to claim 1, it is characterised in that：The prestressing force is applied Add mechanism（200）End set has positioning stiffener（214）, the positioning stiffener（214）On be provided with being connected protrusive board （121）The locating slot being adapted.
- A kind of 5. tundish of controllable lower flexure strain according to claim 4, it is characterised in that：The prestress steel Muscle（220）Both ends prestressed anchor is installed（221）.
- 6. according to a kind of tundish of controllable lower flexure strain of claim 3-5 any one of them, it is characterised in that：It is heat-resisting mixed Solidifying soil layer（213）Including cement, refractory aggregate, filler, additive, antirust agent, water-reducing agent and water.
- A kind of 7. tundish of controllable lower flexure strain according to claim 6, it is characterised in that：Heat resistance concrete layer （213）Each component is formed according to following mass parts：40-45 parts of cement；25-35 parts of refractory aggregate；5-10 parts of filler；8-15 parts of additive；1 part of antirust agent；1 part of water-reducing agent；5 parts of water.
- A kind of 8. tundish of controllable lower flexure strain according to claim 7, it is characterised in that：The additive bag Include prodan and waterglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231741.6A CN106623881B (en) | 2016-12-28 | 2016-12-28 | A kind of tundish of controllable lower flexure strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231741.6A CN106623881B (en) | 2016-12-28 | 2016-12-28 | A kind of tundish of controllable lower flexure strain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106623881A CN106623881A (en) | 2017-05-10 |
| CN106623881B true CN106623881B (en) | 2018-05-15 |
Family
ID=58833094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611231741.6A Active CN106623881B (en) | 2016-12-28 | 2016-12-28 | A kind of tundish of controllable lower flexure strain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106623881B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310177A (en) * | 2011-06-20 | 2012-01-11 | 中冶连铸技术工程股份有限公司 | Device for controlling downwarping of intermediate tank |
| CN102836992A (en) * | 2012-08-30 | 2012-12-26 | 江苏永钢集团有限公司 | Deformation correction device for tundish |
| CN202741724U (en) * | 2012-04-20 | 2013-02-20 | 宣化钢铁集团有限责任公司 | Eight-flow intermediate tank of continuous casting machine |
| CN203356557U (en) * | 2013-07-12 | 2013-12-25 | 王俊武 | Upwarp type intermediate tank |
| JP5896067B1 (en) * | 2015-04-06 | 2016-03-30 | Ｊｆｅスチール株式会社 | Method for producing slabs using a continuous casting machine |
-
2016
- 2016-12-28 CN CN201611231741.6A patent/CN106623881B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310177A (en) * | 2011-06-20 | 2012-01-11 | 中冶连铸技术工程股份有限公司 | Device for controlling downwarping of intermediate tank |
| CN202741724U (en) * | 2012-04-20 | 2013-02-20 | 宣化钢铁集团有限责任公司 | Eight-flow intermediate tank of continuous casting machine |
| CN102836992A (en) * | 2012-08-30 | 2012-12-26 | 江苏永钢集团有限公司 | Deformation correction device for tundish |
| CN203356557U (en) * | 2013-07-12 | 2013-12-25 | 王俊武 | Upwarp type intermediate tank |
| JP5896067B1 (en) * | 2015-04-06 | 2016-03-30 | Ｊｆｅスチール株式会社 | Method for producing slabs using a continuous casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106623881A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106583675B (en) | A kind of molten steel continuous casting steel conticaster | |
| CN101476090B (en) | High-temperature wear resistant kilneye cap iron alloy and manufacturing method thereof | |
| CN101172847B (en) | Pouring material for producing high-temperature ceramic abrasion-proof lining body | |
| CN1112266C (en) | Casting technology and apparatus for producing die-cast ingot, castings and conticast billet | |
| CN101898897A (en) | Quick-drying self-flow iron runner castable material and application method thereof | |
| CN102764680B (en) | Impact crusher plate hammer and manufacturing method thereof | |
| CN104057066B (en) | A kind of preparation method of bimetallic biliquid composite hammer head | |
| CN101386543A (en) | Continuous casting tundish magnesia coating | |
| CN101279363B (en) | Method for inhibiting segregation in large-sized steel ingot | |
| CN107983904A (en) | A kind of multistation jumps riveter structure, jump riveter and chain assembling process line waterline | |
| CN106735146B (en) | A kind of preparation process of the assembly method of tundish prestress application mechanism and anti-downwarp tundish | |
| CN106623881B (en) | A kind of tundish of controllable lower flexure strain | |
| CN104529485B (en) | Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application | |
| CN110372341A (en) | A kind of ramming mass type slag runner dam | |
| JPH1085959A (en) | Thermite type intermediate cast welding method for rail executing topping alloying treatment in cast steel at rail, top part range | |
| CN201008961Y (en) | Casting device of support roll of more than 100 tons complex material supper-scale cast steel | |
| CN201033350Y (en) | Single material super-huge cast steel support roll casting device having a weight of more than 100 ton | |
| CN102372472A (en) | Plastic seal pressing-in material for eliminating blast furnace gas blowby | |
| CN105568124A (en) | QT500-7 nodular cast iron material added with tin, and processing method thereof, and cast | |
| CN103922759A (en) | Preparation method of silicon carbide wear-resistant fireproof wind-guiding wall crossbeam and wind-guiding wall brick | |
| CN102086497B (en) | Method for preparing high-Cr high-Ni oxidation-resistant heat-resistant steel formwork | |
| CN203751324U (en) | Steel ladle with improved ladle port structure | |
| CN103482987A (en) | Wear resistance casting material for ladle | |
| CN108971471A (en) | A kind of carbon-free steel cladding conjunction packet bottom construction technology | |
| CN104402461A (en) | Composite castable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230802 Address after: 215000 No.16, Jintong Road, Tongan town, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou jinlixin special material technology Co.,Ltd. Address before: 243002 Anhui province Ma'anshan Huashan Lake District Road No. 59 Patentee before: ANHUI University OF TECHNOLOGY |