CN108620546A - A kind of insert arrangement and its application method preventing continuous casting billet tail base surge - Google Patents
A kind of insert arrangement and its application method preventing continuous casting billet tail base surge Download PDFInfo
- Publication number
- CN108620546A CN108620546A CN201710186456.5A CN201710186456A CN108620546A CN 108620546 A CN108620546 A CN 108620546A CN 201710186456 A CN201710186456 A CN 201710186456A CN 108620546 A CN108620546 A CN 108620546A
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- Prior art keywords
- plug
- unit
- continuous casting
- tundish
- frame
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of insert arrangement and its application method preventing continuous casting billet tail base surge, insert arrangement is made of two plug-in units and four undercarriage connection linkages；Two plug-in units include left side plug-in unit and right side plug-in unit, connect linkage by respective two undercarriages respectively and are mounted on tundish car lifting support frame；The structure of left side plug-in unit and right side plug-in unit is identical, is referred to as plug-in unit, and two mounting rings are welded and fixed at the top of each plug-in unit；The structure of four undercarriage connection linkages is identical, connects one to one respectively with four mounting rings on described two plug-in units；Each undercarriage connection linkage is connected using hinge arrangement between each other by plug-in unit connecting rod, push action cylinder, fixed frame and oil cylinder connecting rod composition；Fixed frame is fixed by bolts on tundish lift cart supporting rack.The present invention prevents surge reliability high；The high degree of automation of running；Continuous casting machine can be effectively protected.
Description
Technical field
The present invention relates to continuous casting steel machine field, refer in particular to prevent the casting of wide thickness plate continuous casting machine from pulling surge accident occurs
A kind of insert arrangement and its application method preventing continuous casting billet tail base surge.
Background technology
Steel specific to Wide and Thick Slab requires to necessarily require to use slighter compress means (as shown in Figure 1), institute in continuous casting
The generation of center porosity, center segregation when slighter compress refers to improve Slab Solidification is called, it is right in slab solidification end 12
Slab 11 increases a suitable drafts, and it (refers to the roller in fan-shaped section so that solidification end segment roll gap is reduced
With the spacing of roller, i.e. gap values between rollers reduction appropriate) a kind of means.It can overcome the inclined of continuous casting steel billet by slighter compress means
The endoplasms defects such as analysis, and using for slighter compress means to pour rear slab eventually because the molten steel amount squeezed out using slighter compress is more than solidification
The molten steel shrinkage of process leads to the generation of wide thickness plate continuous casting pulling surge accident frequent occurrence.Once surge accident occurs, it must
Continuous cast mold and 0# fan-shaped sections even 1# fan-shaped sections need to be replaced.Sometimes due to operation processing is improper also to cause stagnant base
The generation of accident.All these accidents not only generate very big loss in equipment, while to production logistics and making steel production capacity
Performance brings prodigious influence.The surge accident that present slab continuous casting is faced mostly is happened at some abnormal conditions such as immersion
Disconnected, tundish slag of the neat root in the mouth of a river etc., is greatly shorter in pouring length, substantially less than 15 meters, reason exists
Shorter in wick-containing, the molten steel amount that molten steel green shell can not be squeezed out with solidification of molten steel shrinkage and slighter compress reaches balance, makes
Liquid molten steel is obtained to flow out from green shell edge.In the continuous casting of present technology, for these abnormal conditions all using with follow closely consider to be worth doing bind come
Processing, this processing method are substantially utterly useless for the big cross section of 2300mm*300mm equal-specifications.On the contrary, being followed closely when binding
The addition of bits counteracts the shrinkage of liquid molten steel solidification so that surge is easier to occur.
Invention content
The purpose of the present invention is to solve problem of the existing technology, a kind of continuous casting billet tail base surge that prevents is provided
Insert arrangement and its application method are inserted into the molten steel in crystallizer by plug-in unit so that entire molten steel face rises to extend slab
The length of tail base green shell accommodates the molten steel that slighter compress is squeezed out to indirectly increase trailing space, prevent liquid molten steel because
Slighter compress, which squeezes out excessive and end, leads to the generation of surge accident because of not enough accommodation spaces.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of insert arrangement preventing continuous casting billet tail base surge connects linkage group by two plug-in units and four undercarriages
At；
Described two plug-in units include left side plug-in unit and right side plug-in unit, and left side plug-in unit and right side plug-in unit pass through respective two respectively
A undercarriage connection linkage is mounted on tundish car lifting support frame, and is respectively placed in the two of tundish immersed nozzle
Side, trolley lifting support frame are located at the bottom of tundish；
The structure of the left side plug-in unit and right side plug-in unit is identical, is referred to as plug-in unit, two are welded and fixed at the top of each plug-in unit
A mounting ring；
The structure of four undercarriages connection linkage is identical, respectively with four mounting rings one on described two plug-in units
One is correspondingly connected with；
Each undercarriage connection linkage is made of plug-in unit connecting rod, push action cylinder, fixed frame and oil cylinder connecting rod,
In：Plug-in unit connecting rod lower end passes through a mounting ring hinge connection on the second pivot pin and plug-in unit；Plug-in unit connecting rod upper end passes through
First pivot pin and fixed frame hinge connection；Connected by third pivot pin and middle studdle one end hinge in the middle part of plug-in unit connecting rod
It connects；The middle studdle other end and distance rod one end and pass through the 4th mutual hinge connection of pivot pin with push action cylinder；Distance rod
The other end passes through the 5th pivot pin and fixed frame hinge connection；Push action cylinder end is hinged on fixed frame；
The fixed frame is fixed by bolts on tundish lift cart supporting rack.
The inside of shown plug-in unit is a rectangle keel frame being formed by welding by structural steel；The keel frame passes through
The form aluminum-carbon refractory material cast of molding is rectangle into one piece and the plug-in unit of bottom belt triangle guide frame.
The keel frame is made of two I-steel and two rectangle steels, arranged parallel above and below two I-steel,
Described two rectangle bracing members and the left and right sides being weldingly fixed between two I-steel, the top of piece I-steel in top is slotting
At the top of part, the left and right directions at the top of plug-in unit is welded and fixed described two mounting rings, and two mounting rings are mutually parallel.
The length of the plug-in unit is 800mm, is highly 600mm, thickness 200mm；The bottom angle α of the guide frame
It is 120 degree.
The undercarriage connecting rod mechanism action process be stretched by push action cylinder realize plug-in unit from position of readiness to
It is inserted perpendicularly into position, push action cylinder operational process is to realize the action released and withdrawn by hydraulic electromagnetic change valve, each
It is respectively provided with speed governing valve in the hydraulic circuit of push action cylinder, keeps four push action cylinder push medium velocities synchronous with position holding.
It is another object of the present invention to what is be achieved through the following technical solutions：
A kind of application method for the insert arrangement for preventing continuous casting billet tail base surge, using preventing continuous casting billet tail as described above
The insert arrangement of base surge comprising following steps：
When insert arrangement is normal, push action cylinder is standby in undercarriage connection linkage, is in retracted mode, plug-in unit is not inserted into knot
In brilliant device；
When abnormal conditions occur, tundish lift cart braced frame is promoted, then draws the molten steel face in crystallizer
To apart from the position of crystallizer upper end 300mm, start the push action cylinder in undercarriage connection linkage, push action cylinder stretches out, makes
Plug-in unit connecting rod, push action cylinder, fixed frame and oil cylinder connecting rod make two plug-in units hang down by the activity of respective hinge arrangement
Directly in tundish and concordant with submersed nozzle, plug-in unit is then directed at the center of crystallizer and makes tundish lift cart
Braced frame declines, and plug-in unit is made to be inserted into the crystallizer of 300mm depth, and molten steel face rises therewith, liquid molten steel and the knot of rising
After brilliant device copper coin contact, due to the cooling effect that copper plate of crystallizer is given, the company that new thickness reaches 5mm is formed on copper coin surface
The green shell of cast panel base promotes tundish after plug-in unit is inserted into crystallizer 10 seconds, then plug-in unit is extracted out of crystallizer, newly extends
The green shell come makes slab tail portion slot milling to accommodate the molten steel being extruded；After tundish is promoted again, retraction push action cylinder makes
It obtains plug-in unit and returns to position of readiness, and the cold steel on plug-in unit surface is carried out clearly in time when tundish lift cart braced frame is offline
Reason.
Beneficial effects of the present invention：
The insert arrangement for preventing continuous casting billet tail base surge of the present invention is made by squeezing Mold on molten steel face
The generation for promoting to extend tail base green shell in crystallizer is risen, molten steel space is accommodated to increase tail base, prevents surge in an indirect way
Generation.It is more than on the conticaster of 300mm thickness present invention is particularly suited for slab continuous casting and uses, the benefit of generation is very may be used
It sees.
The method of the present invention compared with prior art, has the characteristics that：Prevent surge reliability high；The automation journey of running
Degree is high；Continuous casting machine can be effectively protected.
For the above-mentioned purpose, design feature and effect further illustrated the present invention, below with reference to attached drawing to the present invention into
Row is described in detail.
Description of the drawings
Fig. 1 is the schematic diagram that slighter compress means are used in wide thickness plate continuous casting production；
Fig. 2 is the insert arrangement structural schematic diagram that the present invention prevents continuous casting billet tail base surge；
Fig. 3 is the keel frame structural schematic diagram of plug-in unit in Fig. 2；
Fig. 4 is the external structure schematic diagram of plug-in unit in Fig. 2；
For the undercarriage connecting rod mechanism structure schematic diagram in Fig. 2, (push action cylinder stretches out in vertical state Fig. 5, and plug-in unit is inserted
Enter state when crystallizer)；
For the undercarriage connecting rod mechanism structure schematic diagram in Fig. 2, (standby push action cylinder is in retracted mode to Fig. 6, and plug-in unit is not
It is inserted into state when crystallizer)；
Fig. 7 is the usage state diagram for the insert arrangement that the present invention prevents continuous casting billet tail base surge.
Specific implementation mode
The specific implementation mode of the present invention is described in detail with reference to the attached drawing of embodiment.
The present invention's prevents the insert arrangement of continuous casting billet tail base surge referring to Fig. 2, by two plug-in units and four undercarriages
Connect linkage composition.
Described two plug-in units include left side plug-in unit 22 and right side plug-in unit 23, and left side plug-in unit 22 and right side plug-in unit 23 pass through respectively
Respective two undercarriages connection linkage 24 is mounted on tundish car lifting support frame 21, and is respectively placed in tundish leaching
Enter the both sides at the formula mouth of a river 25, trolley lifting support frame 21 is located at the bottom of tundish.
The structure of the left side plug-in unit 22 and right side plug-in unit 23 is identical, is referred to as plug-in unit 30, as shown in figure 3, plug-in unit 30
Inside is a rectangle keel frame being formed by welding by structural steel；The keel frame is by two I-steel 31 and two squares
Shape steel 32 forms, two I-steel, about 31 arranged parallel, and described two rectangle steels 32 support and are weldingly fixed on two
The top of left and right sides between I-steel 31, piece I-steel in top is at the top of plug-in unit, and the left and right directions welding at the top of plug-in unit is solid
Fixed two mounting rings 33, two mounting rings 33 are mutually parallel；As shown in figure 4, the form aluminium that the keel frame passes through molding
Carbide refractory cast is rectangle into one piece and the plug-in unit 30 of bottom belt triangle guide frame 34, the length of plug-in unit 30
It is highly 600mm for 800mm, the bottom angle α of thickness 200mm, guide frame 34 are 120 degree, setting guide frame 34
Purpose is can to squeeze the slag of steel ullage to surrounding, is prevented during insertion, plug-in unit bottom quickly squeezes slag
Enter in molten steel and influence the quality of steel.
The structure of four undercarriages connection linkage is identical, respectively with four mounting rings on described two plug-in units 30
It connects one to one.
Each undercarriage connection linkage 24 is by plug-in unit connecting rod 41, push action cylinder 42, fixed frame 43 and oil cylinder connection
Bar 44 forms.Wherein：
41 lower end of plug-in unit connecting rod passes through the second pivot pin 412 and 33 hinge connection of mounting ring on plug-in unit；Plug-in unit connects
41 upper end of extension bar passes through the first pivot pin 411 and 43 hinge connection of fixed frame；41 middle part of plug-in unit connecting rod passes through third pivot pin 441
With 45 one end hinge connection of middle studdle；45 other end of middle studdle is logical with 44 one end of distance rod and with push action cylinder 42
Cross the 442 mutual hinge connection of the 4th pivot pin；44 other end of distance rod passes through 443 hinge connection of the 5th pivot pin with fixed frame 43；
42 end of push action cylinder is hinged on fixed frame 43.The fixed frame 43 is to be fixed by bolts to tundish
On lift cart supporting rack 21, make fixed frame 43 and 21 synchronization lifting of tundish lift cart supporting rack.
Each undercarriage connection 24 action process of linkage is stretched by push action cylinder 42 to realize plug-in unit from standby position
It sets and is inserted perpendicularly into position, 42 operational process of push action cylinder is to realize release and receipts by hydraulic electromagnetic change valve (not shown)
The action returned respectively increases speed governing valve (not shown) to protect in hydraulic control oil circuit to the hydraulic circuit of each push action cylinder
Demonstrate,prove the synchronism and harmony of four push action cylinder push medium velocities and position.
Using push action cylinder 42 pushes activity chain extension bar supporting mechanism to constitute, the mechanism energy adequate solution tundish bottom
Portion's narrow space and plug-in unit heavier mass, the shortcomings that can not be manually manually inserted into.
The application method for preventing the insert arrangement of continuous casting billet tail base surge of the present invention is as follows：
In use, as shown in Fig. 2, left side plug-in unit 22 and right side plug-in unit 23 are passed through respective undercarriage connecting rod
Mechanism 24 is mounted in the tundish lift cart braced frame 21 of tundish bottom.When normal as shown in 5 figures, undercarriage connection
Push action cylinder is standby in linkage, is in retracted mode, and plug-in unit is not inserted into crystallizer.
When abnormal conditions occur (when after pulling out the very big situation of surge probability occurs for guide), it is small to promote tundish lifting
Then molten steel face in crystallizer 26 is pulled to apart from the position of 26 upper end 300mm of crystallizer by vehicle braced frame 21, startup is risen and fallen
Frame connects the push action cylinder 42 in linkage 24, and push action cylinder as shown in Figure 6 stretches out, and makes plug-in unit connecting rod 41, push action cylinder 42,
Fixed frame 43 and oil cylinder connecting rod 44 by the activity of respective hinge arrangement, and make two plug-in units 30 perpendicular to tundish and with
Submersed nozzle 25 is concordant, and plug-in unit is then directed at the center of crystallizer 26 and makes tundish lift cart braced frame 21
Decline, plug-in unit is made to be inserted into the crystallizer 26 of 300mm depth, due to crowding-out, molten steel face can be with for molten steel in crystallizer 26
Rising L (as shown in Figure 7), this liquid level L risen can pass through and decline tundish lift cart braced frame 21
Stroke carries out suitable control.But ensure that molten steel face not overflow crystallizer.The liquid molten steel of rising is contacted with copper plate of crystallizer
Afterwards, due to the cooling effect that copper plate of crystallizer is given, the continuous casting plate that new thickness reaches 5mm or so is formed on copper coin surface quickly
The green shell of base promotes tundish after plug-in unit is inserted into crystallizer 10 seconds and extracts plug-in unit out of crystallizer, and new extend comes out in this way
Green shell make slab tail portion that will reserve very large space to accommodate the molten steel being extruded.After tundish is promoted, retraction thrust
Oil cylinder 42 so that plug-in unit returns to position of readiness.And when tundish lift cart braced frame 21 is offline in time to plug-in unit surface
Cold steel cleared up.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention's
Purpose, and it is not used as limitation of the invention, as long as in the essential scope of the present invention, the change to embodiment described above
Change, modification will all be fallen in the scope of the claims of the present invention.
Claims (6)
1. a kind of insert arrangement preventing continuous casting billet tail base surge, it is characterised in that by two plug-in units and four undercarriage connecting rods
Mechanism forms；
Described two plug-in units include left side plug-in unit and right side plug-in unit, and left side plug-in unit and right side plug-in unit are risen by respective two respectively
It falls frame connection linkage to be mounted on tundish car lifting support frame, and is respectively placed in the both sides of tundish immersed nozzle,
Trolley lifting support frame is located at the bottom of tundish；
The structure of the left side plug-in unit and right side plug-in unit is identical, is referred to as plug-in unit, and two peaces are welded and fixed at the top of each plug-in unit
Fill ring；
The structure of four undercarriages connection linkage is identical, a pair of with four mounting rings one on described two plug-in units respectively
It should connect；
Each undercarriage connection linkage is made of plug-in unit connecting rod, push action cylinder, fixed frame and oil cylinder connecting rod, wherein：
Plug-in unit connecting rod lower end passes through a mounting ring hinge connection on the second pivot pin and plug-in unit；Plug-in unit connecting rod upper end passes through first
Pivot pin and fixed frame hinge connection；Pass through third pivot pin and the hinge connection of middle studdle one end in the middle part of plug-in unit connecting rod；In
Between the supporting rod other end and distance rod one end and pass through the 4th mutual hinge connection of pivot pin with push action cylinder；The distance rod other end
Pass through the 5th pivot pin and fixed frame hinge connection；Push action cylinder end is hinged on fixed frame；It is described solid
Determining frame is fixed by bolts on tundish lift cart supporting rack.
2. the insert arrangement as described in claim 1 for preventing continuous casting billet tail base surge, it is characterised in that：
The inside of shown plug-in unit is a rectangle keel frame being formed by welding by structural steel；The keel frame passes through molding
Form aluminum-carbon refractory material cast into one piece be rectangle and bottom belt triangle guide frame plug-in unit.
3. the insert arrangement as claimed in claim 2 for preventing continuous casting billet tail base surge, it is characterised in that：
The keel frame is made of two I-steel and two rectangle steels, arranged parallel above and below two I-steel, described
The top of two rectangle bracing members and the left and right sides being weldingly fixed between two I-steel, piece I-steel in top is insert top
Portion, the left and right directions at the top of plug-in unit are welded and fixed described two mounting rings, and two mounting rings are mutually parallel.
4. the insert arrangement as claimed in claim 2 for preventing continuous casting billet tail base surge, it is characterised in that：
The length of the plug-in unit is 800mm, is highly 600mm, thickness 200mm；The bottom angle α of the guide frame is
120 degree.
5. the insert arrangement as described in claim 1 for preventing continuous casting billet tail base surge, it is characterised in that：
The undercarriage connecting rod mechanism action process is stretched by push action cylinder to realize plug-in unit from position of readiness to vertical
Insertion position, push action cylinder operational process are to realize the action released and withdrawn, each thrust by hydraulic electromagnetic change valve
It is respectively provided with speed governing valve in the hydraulic circuit of oil cylinder, keeps four push action cylinder push medium velocities synchronous with position holding.
6. a kind of application method for the insert arrangement for preventing continuous casting billet tail base surge, using as described in any in claim 1 to 5
The insert arrangement for preventing continuous casting billet tail base surge, it is characterised in that include the following steps：
When insert arrangement is normal, push action cylinder is standby in undercarriage connection linkage, is in retracted mode, plug-in unit is not inserted into crystallizer
It is interior；
When abnormal conditions occur, promoted tundish lift cart braced frame, then by the molten steel face in crystallizer be pulled to away from
Position from crystallizer upper end 300mm starts the push action cylinder in undercarriage connection linkage, and push action cylinder stretches out, and makes plug-in unit
Connecting rod, push action cylinder, fixed frame and oil cylinder connecting rod by respective hinge arrangement activity, and make two plug-in units perpendicular to
Tundish is simultaneously concordant with submersed nozzle, and plug-in unit is then directed at the center of crystallizer and tundish lift cart is made to support
Frame declines, and so that plug-in unit is inserted into the crystallizer of 300mm depth, molten steel face rises therewith, the liquid molten steel and crystallizer of rising
After copper coin contact, due to the cooling effect that copper plate of crystallizer is given, the continuous casting plate that new thickness reaches 5mm is formed on copper coin surface
The green shell of base promotes tundish after plug-in unit is inserted into crystallizer 10 seconds, then plug-in unit is extracted out of crystallizer, new to extend out
Green shell makes slab tail portion slot milling to accommodate the molten steel being extruded；After tundish is promoted again, retraction push action cylinder so that insert
Part returns to position of readiness, and is cleared up in time the cold steel on plug-in unit surface when tundish lift cart braced frame is offline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186456.5A CN108620546B (en) | 2017-03-24 | 2017-03-24 | Plug-in device for preventing continuous casting billet tail billet from rising and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186456.5A CN108620546B (en) | 2017-03-24 | 2017-03-24 | Plug-in device for preventing continuous casting billet tail billet from rising and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108620546A true CN108620546A (en) | 2018-10-09 |
| CN108620546B CN108620546B (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710186456.5A Active CN108620546B (en) | 2017-03-24 | 2017-03-24 | Plug-in device for preventing continuous casting billet tail billet from rising and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108620546B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976833A (en) * | 2019-11-20 | 2020-04-10 | 河钢乐亭钢铁有限公司 | Quick-change cooling device and quick-change process for large-shrinkage steel grade hot tundish |
| CN111438343A (en) * | 2019-01-16 | 2020-07-24 | 宝山钢铁股份有限公司 | Tool for preventing continuous casting final pouring rising accident and preventing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111438343A (en) * | 2019-01-16 | 2020-07-24 | 宝山钢铁股份有限公司 | Tool for preventing continuous casting final pouring rising accident and preventing method thereof |
| CN110976833A (en) * | 2019-11-20 | 2020-04-10 | 河钢乐亭钢铁有限公司 | Quick-change cooling device and quick-change process for large-shrinkage steel grade hot tundish |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108620546B (en) | 2020-03-06 |
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