CN208276170U - Hot Metal in Beam Blank tundish fast replacing device - Google Patents
Hot Metal in Beam Blank tundish fast replacing device Download PDFInfo
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- CN208276170U CN208276170U CN201820811076.6U CN201820811076U CN208276170U CN 208276170 U CN208276170 U CN 208276170U CN 201820811076 U CN201820811076 U CN 201820811076U CN 208276170 U CN208276170 U CN 208276170U
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- base component
- carrier bar
- hot metal
- beam blank
- support frame
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Abstract
The utility model discloses a kind of Hot Metal in Beam Blank tundish fast replacing devices, belong to casting for shaped blank continuous field.The utility model includes: support frame, sets that there are two the sliding rails that are parallel to each other inside support frame；Carrier bar, carrier bar is horizontally disposed, and the one end fits of carrier bar are mounted on a sliding rail, and the other end of carrier bar is fitted on another sliding rail；Even base component, even base component includes two horizontal segments being parallel to each other, and is connected between two horizontal segments by vertical section；The top of vertical section is connected with several tilting sections inclined upward, and the lower part of vertical section is connected with several tilting sections inclined downward；The both ends of carrier bar are connected separately with company's base component.The purpose of the utility model is to overcome existing even base component installation speed and the lower deficiencies of installation accuracy when tundish quick change operates, provide a kind of Hot Metal in Beam Blank tundish fast replacing device, installation speed is improved, ensure that installation accuracy, it is ensured that the operation of tundish quick change smoothly completes.
Description
Technical field
The utility model relates to casting for shaped blank continuous fields, more specifically to a kind of Hot Metal in Beam Blank tundish fast replacing device.
Background technique
With the development of iron and steel enterprise and the raising of whole industrial level, steel production scale constantly becomes larger, imitates to production
The requirement of rate is higher and higher, and the production efficiency of steel-making continuous casting has become the bottleneck problem of development of iron and steel enterprises.In terms of continuous casting, it is
It realizes continual continuous casting for a long time, has developed submersed nozzle fast exchanging process, ladle quick-replaceable work at present
Skill and relevant device.Continuous casting production service life directly affects the raising of conticaster operating rate, fast using continuous casting production
Technology is changed, casting machine machine stop times can be reduced, effectively reduces tundish time, improves caster work rate, improves casting machine production capacity,
Reduce production cost.
Under the conditions of tundish service life can not be significant extended, exploitation tundish quick change technique is very necessary.
Wherein, the casting blank section geometry in the continuous casting process of Hot Metal in Beam Blank due to Hot Metal in Beam Blank is special, and setting rate is fast, fast in tundish
It is more demanding to the firmness of new and old slab junction, quick change speed, connection precision during changing, but tundish quick change at present
Process is mainly manually operated by operator, and technology stability is difficult to ensure, manually connects steel in base component insertion crystallizer
When in molten steel, once operation error, gently then leaves scratch on copper plate of crystallizer, cc billet surface quality is reduced, it is heavy then damage knot
Brilliant device copper sheet, causes production accident, upsets rhythm of production.
Have related art scheme about Hot Metal in Beam Blank tundish fast replacing device in the prior art to disclose, such as patent disclosure
Number: 1986115 A of CN, publication date: on 06 27th, 2007, invention and created name are as follows: packet fast sprue-replacing pours in casting for shaped blank continuous
Injecting method and device, this application include middle packet and crystallizer, and two middle water-coating ports are at least arranged in middle packet, each under middle water-coating port
Side setting fast sprue-replacing mechanism, which is provided with sliding filling pipe end and sliding collector nozzle, respectively with middle water-coating port and full immersion water
Mouth is connected, and full submersed nozzle is plugged in crystallizer, and by bearing bracket, molten steel is poured by the two closed ladle canals
Note prevents secondary oxidation of steel, improves slab quality；Fast sprue-replacing mechanism for implementing molten steel flow and in crystallizer liquid level tune
Control reduces bonding, bleed-out tendency；Realize the fast online replacement mouth of a river, continuous cast crystallizer number in raising, in reduction packet replacement number and
Middle packet dosage improves caster work rate.But connect in this application base component installation speed and installation accuracy it is lower, it is difficult
To ensure smoothly completing for tundish quick change operation.But connects base component used in this application and not can guarantee new and old slab
Between firmly connect.
In conclusion how to overcome it is existing even base component tundish quick change operation when installation speed and installation accuracy compared with
Low deficiency, be in the prior art urgent need to resolve the technical issues of.
Utility model content
1. utility model technical problems to be solved
The purpose of the utility model is to overcome existing even base component installation speed and peaces when tundish quick change operates
The lower deficiency of precision is filled, a kind of Hot Metal in Beam Blank tundish fast replacing device is provided, improves installation speed, ensure that installation essence
Degree, it is ensured that the operation of tundish quick change smoothly completes.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model are as follows:
The Hot Metal in Beam Blank tundish fast replacing device of the utility model, comprising:
Support frame is set inside support frame as described above there are two the sliding rail being parallel to each other, and the sliding rail is arranged in vertical；
Carrier bar, the carrier bar is horizontally disposed, and the one end fits of carrier bar are mounted on a sliding rail, carrier bar
The other end be fitted on another sliding rail；
Even base component, the even base component include two horizontal segments being parallel to each other, and are passed through between two horizontal segments vertical
Section connection；The top of the vertical section is connected with several tilting sections inclined upward, if the lower part of the vertical section is connected with
Do tilting section inclined downward；The both ends of the carrier bar are connected separately with company's base component.
It is further improved as the utility model, the both ends of the carrier bar are respectively equipped with locating slot, each positioning
The two sides of slot are respectively equipped with outwardly extending extension rod；The middle part of the even base member upper horizontal segment is equipped with prolongs to two sides respectively
The positioning protrusion stretched, the positioning protrusion hang on the top of the locating slot.
It is further improved as the utility model, lifters is installed in support frame as described above, the one of the lifters
Side is coupled on the slideway in a vertical direction, and the other side of the lifters is equipped with the spur rack of vertical direction；Institute
It states spur rack to engage with transmission gear, the end of the transmission gear is connected by the middle part of drive rod and rotating disk；It is described to hold
It carries and is connected in the lifters in the middle part of bar.
It is further improved as the utility model, the bottom of support frame as described above is equipped with several locating pieces.
It is further improved as the utility model, slag thickness meter is equipped in support frame as described above, the slag thickness is calculated as winding
The silk thread disk of copper silk thread.
It is further improved as the utility model, the top of support frame as described above is equipped with laser range finder.
It is further improved as the utility model, the top of support frame as described above is equipped with infrared radiation thermometer.
3. beneficial effect
Using technical solution provided by the utility model, compared with prior art, there is following remarkable result:
(1) the purpose of the utility model is to overcome the installations of installation when existing Hot Metal in Beam Blank tundish quick change even base component
Precision, installation speed and installation opportunity unstable deficiency provide a kind of Hot Metal in Beam Blank tundish fast replacing device and method,
On the best installation opportunity of the company's of will appreciate that base component, installation speed is improved, ensure that installation accuracy, improves slab seam matter
Amount, it is ensured that smoothly completing for tundish quick change operation improves production efficiency.
(2) geometry for connecting base component in the utility model, is conducive to tundish quick change process and connects base component quickly to insert
Enter in crystallizer and solidified with the seamless fusion of molten steel, and fuse solidification closely with the molten steel after tundish replacement, can guarantee new and old
Slab securely connects.
(3) the Hot Metal in Beam Blank tundish fast replacing device of the utility model, can monitor covering slag thickness and molten steel in crystallizer
Temperature to guarantee the accurate installation opportunity of even base component, and can guarantee that two company's base components are synchronous and install rapidly, thirdly
Tieing up positioning function can guarantee the installation accuracy of even base component, and the company's of avoiding base component grazing damages copper plate of crystallizer.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic view of the front view of the Hot Metal in Beam Blank tundish fast replacing device of embodiment；
Fig. 2 is the side structure schematic view of the Hot Metal in Beam Blank tundish fast replacing device of embodiment；
Fig. 3 is the schematic view of the front view for connecting base component in embodiment；
Fig. 4 is the overlooking structure diagram of carrier bar in embodiment；
Fig. 5 is the overlooking structure diagram of Hot Metal in Beam Blank in embodiment；
Fig. 6 is the flow chart of the Hot Metal in Beam Blank tundish quick change method of embodiment.
Label declaration in schematic diagram: 1, support frame；2, connect base component；201, horizontal segment；2011, positioning protrusion；202,
Vertical section；203, tilting section；204, breeze way；205, bar is protruded into；206, extension rod；207, shunting section；3, extension rod；4, slag is thick
Meter；5, rotating disk；6, drive rod；7, transmission gear；8, lifters；9, sliding rail；10, locating piece；11, laser range finder；12, red
Outer temperature measurer；13, carrier bar；1301, locating slot；14, Hot Metal in Beam Blank.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Therefore, below to providing in the accompanying drawings
The detailed description of the embodiments of the present invention be not intended to limit the range of claimed invention, but only
Indicate the selected embodiment of the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
For the content for further appreciating that the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1-5, the Hot Metal in Beam Blank tundish fast replacing device of the present embodiment, comprising: support frame 1 is equipped with inside support frame 1
Two sliding rails 9 being parallel to each other, sliding rail 9 are arranged in vertical；Carrier bar 13, carrier bar 13 is horizontally disposed, carrying
The one end fits of bar 13 are mounted on a sliding rail 9, and the other end of carrier bar 13 is fitted on another sliding rail 9；Even base component
2, even base component 2 is for connection to the steel structure part that packet front and back molten steel in quick change is formed by new and old slab, and even base component 2 wraps
Two horizontal segments being parallel to each other 201 are included, are connected between two horizontal segments 201 by vertical section 202；The top of vertical section 202
Several tilting sections inclined upward 203 are connected with, the lower part of vertical section 202 is connected with several tilting sections inclined downward
203, the design of tilting section 203 on 202 top of vertical section, lower part enables company's base component 2 closely to connect with the molten steel after solidification
It connects, guarantees that new and old slab securely connects；The both ends of carrier bar 13 are connected separately with company's base component 2.Wherein, the two of carrier bar 13
End is respectively equipped with locating slot 1301, and the two sides of each locating slot 1301 are respectively equipped with outwardly extending extension rod 3；Even base component 2
The middle part of upper horizontal section 201 is equipped with the positioning protrusion 2011 extended respectively to two sides, and positioning protrusion 2011 hangs on locating slot
1301 top, positioning protrusion 2011 can support the weight for entirely connecting base component 2, and locating slot 1301 will be for that will connect base component 2
Certain height is hung on, is prolonged in use, the positioning protrusion 2011 extended in upper horizontal section 201 to two sides is ridden over correspondence respectively
On boom 3, even base component 2 then is pushed to 1301 direction of locating slot, so that even the vertical section 202 of base component 2 passes through locating slot
1301, even the positioning protrusion 2011 on base component 2 hangs on the top of locating slot 1301, thus conveniently and efficiently by two companies
Base component 2 is symmetrically connected to the both ends of carrier bar 13；Carrier bar 13 is used to two blocks of company's base components 2 being placed on the same horizontal plane
On, guarantee that two blocks of company's base components 2 can be inserted into the corresponding position of beam blank mould section simultaneously and (can refer in Fig. 5 special-shaped
Two rectangular areas of 14 section of base).Lifters 8 are installed, the side of lifters 8 is coupled vertical in one in support frame 1
On slideway on direction, the other side of lifters 8 is equipped with the spur rack of vertical direction；Spur rack is engaged with transmission gear 7, is led to
The rotation of transmission gear 7 is crossed, lifters 8 can slide up and down in slideway, and the end of transmission gear 7 passes through drive rod 6 and rotation
The middle part of disk 5 connects, and rotating disk 5 adjusts the height and position of lifters 8 by drive rod 6 and transmission gear 7, realizes to carrier bar
Connect the control of 2 height and position of base component on 13；The middle part of carrier bar 13 is connected in lifters 8.If the bottom of support frame 1 is equipped with
Dry locating piece 10, locating piece 10 are three movable bolts for being in a plane, are used for entire Hot Metal in Beam Blank tundish fast replacing device
In crystallizer location and installation suitable for reading, thus realize the positioning to even 2 underthrust position of base component, the insertion of the company's of raising base component 2
Precision and insertion speed.It is equipped with slag thickness meter 4 in support frame 1, slag thickness meter 4 be the silk thread disk of winding copper silk thread, and silk thread is from silk thread
The lower section of disk pulls out, and has scale above silk thread disk, can compare with scale after being inserted into the silk thread taking-up of crystallizer, for measuring knot
The thickness of covering slag in brilliant device.The top of support frame 1 is equipped with laser range finder 11, and laser range finder 11 is for the company's of measurement base component
Distance of 2 upper surfaces away from molten steel face, guarantee even 2 height and position of base component accurately control and even base component 2 in new and old slab
In it is symmetrical.The top of support frame 1 is equipped with infrared radiation thermometer 12, and infrared radiation thermometer 12 is for measuring Mold face
Temperature, with the suitable insertion opportunity of the company's of determination base component 2.
With reference to Fig. 6, the Hot Metal in Beam Blank tundish quick change method of the present embodiment, comprising the following steps:
Step A: getting out Hot Metal in Beam Blank tundish fast replacing device, and steel plate is processed as to the geometry of even base component 2, checks
Middle hired car track has no-sundries to influence walking, and centering packet track is cleared up, by the new baking of tundish for preparing to change to 1000 DEG C
More than, it is ensured that the mouth of a river is unobstructed, mechanism sliding block is normal and tundish car lifting, traversing, walking normal operation；
Step B: Hot Metal in Beam Blank tundish fast replacing device is installed on above crystallizer；Specifically, even base component 2 is placed in
100 DEG C of environment above are toasted, by support frame 1 by the locating piece 10 of its bottom rapidly and accurately location and installation on crystallizer
Side, is adjusted to setting position for the height of carrier bar 13 according to laser range finder 11, each even base component 2 is hung on corresponding
In locating slot 1301；
Step C: gradually reducing covering slag additive amount in crystallizer, when protection thickness of slag layer is 3-8mm and knot in crystallizer
When molten steel surface temperature is 1510-1530 DEG C in brilliant device, two blocks of company's base components 2 are inserted into crystallizer by rotation rotating disk 5 simultaneously
Target position；Specifically, crystallizer and two cold intensities of cooling are reduced, covering slag additive amount is gradually reduced, reduces Casting speed,
Reach and stifled stream operation is carried out to each mouth of a river after stopping pouring pulling rate and stirs molten steel；Using being protected in more than 4 measurement crystallizers of slag thickness meter
The thickness of slag blanket, (protection thickness of slag layer is too thick to be unfavorable for even base structure after protecting slag blanket to reach expected thickness 3-8mm in crystallizer
The insertion of part 2, protection thickness of slag layer is too thin to be unfavorable for forming molten steel isolation protection), molten steel is observed by infrared radiation thermometer 12
Face temperature change, in set temperature section, (1510-1530 DEG C, the too low even base component 2 that is unfavorable for of molten steel temperature is inserted into, temperature mistake
Height is unfavorable for even base component 2 and the seamless fusion of molten steel solidifies) by rotation rotating disk 5 by two blocks of company's base components 2 simultaneously, it is safe,
It is accurately inserted into the target position in crystallizer, stops decline even base component 2 when molten steel face reaches even 2 center of base component,
It leaves half and connects base component 2 in steel ullage, subsequent molten steel starts to solidify, and even the position of base component 2 is fixed, by even base structure
Part 2 is removed out of corresponding locating slot 1301, withdraws Hot Metal in Beam Blank tundish fast replacing device rapidly；
Step D: Metal in Tundish is poured to crystallizer；Specifically, old tundish car is moved away from working position, while will be new
Middle hired car is moved to working position, carries out big packet open casting operation, and big Baogang's water enters tundish, Metal in Tundish is poured to crystallizer
Interior, high-temperature molten steel gradually floods even base component 2, pulling rate and is gradually recovered normally, and crystallizer and secondary cooling water intensity of cooling are gradually recovered.
The purpose of the utility model is to overcome the installation essences of installation when existing Hot Metal in Beam Blank tundish quick change even base component 2
Degree, installation speed and installation opportunity unstable deficiency provide a kind of Hot Metal in Beam Blank tundish fast replacing device and method, energy
On the best installation opportunity of the enough company's of grasp base components 2, installation speed is improved, ensure that installation accuracy, improves slab seam matter
Amount, it is ensured that smoothly completing for tundish quick change operation improves production efficiency.
The geometry for connecting base component 2 in the utility model is conducive to tundish quick change process and connects 2 quick insertion of base component
It is solidified in crystallizer with the seamless fusion of molten steel, and fuses solidification closely with the molten steel after tundish replacement, can guarantee new and old casting
Base securely connects.
The Hot Metal in Beam Blank tundish fast replacing device of the utility model can monitor covering slag thickness and molten steel temperature in crystallizer
Degree to guarantee the accurate installation opportunity of even base component 2, and can guarantee the synchronous and rapid installation of two company's base components 2, thirdly
Tieing up positioning function can guarantee the installation accuracy of even base component 2, and 2 grazing of the company's of avoiding base component damages copper plate of crystallizer.
Embodiment 2
With reference to Fig. 2, the Hot Metal in Beam Blank tundish fast replacing device of the present embodiment, structure is substantially the same manner as Example 1, more into one
Step: several extension rods 206 are connected on each tilting section 203；Breeze way is equipped with positioned at its bottom end of the horizontal segment 201 of lower part
204, the breeze way 204 small big conical structure under being, the bottom end of breeze way 204 be connected with extend downward protrude into bar
205；Superposed its surrounding of horizontal segment 201 is provided with the shunting section 207 of annular, and 207 upper surface of shunting section is from top to bottom
Inclined annular slope, height of the annular slope close to 207 central point direction of shunting section are higher than far from 207 central point of shunting section
The height in direction.
In the present embodiment, several extension rods 206 are connected on each tilting section 203, if connected on each tilting section 203
Dry extension rod 206 increases the surface area that entire tilting section 203 is contacted with molten steel, so that energy between new and old slab after solidification of molten steel
Enough securely connections.
In the present embodiment, it is equipped with breeze way 204 positioned at its bottom end of the horizontal segment 201 of lower part, on the breeze way 204 is small under being
Big conical structure, the bottom end of breeze way 204 be connected with extend downward protrude into bar 205, entirely connect base component 2 to molten steel
When middle insertion, protrude into bar 205 and touch molten steel at first, then under the breeze way 204 of small big conical structure gradually protrude into steel
In liquid, the phenomenon that avoiding the direct exposure level section 201 of molten steel and splash, while being conducive to entirely to connect base component 2 and smoothly stretch
Enter in molten steel.
In the present embodiment, superposed its surrounding of horizontal segment 201 is provided with the shunting section 207 of annular, on shunting section 207
Surface is that inclined annular slope, height of the annular slope close to 207 central point direction of shunting section are higher than separate from top to bottom
The height in 207 central point direction of shunting section, when molten steel trickles from tundish into crystallizer, passes through the blocking of shunting section 207, steel
Liquid is assembled in crystallizer first, and the molten steel liquid level then assembled is gradually increasing entirely will connect base component 2 and wrap gradually, thus
Conducive to molten steel and the entire close contact connected between base component 2, so that can securely be connected between new and old slab after solidification of molten steel.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. Hot Metal in Beam Blank tundish fast replacing device, characterized by comprising:
Support frame (1), support frame as described above (1) is internal to be set there are two the sliding rail (9) being parallel to each other, and the sliding rail (9) is along Vertical Square
To setting；
Carrier bar (13), the carrier bar (13) is horizontally disposed, and the one end fits of carrier bar (13) are mounted on a sliding rail
(9) on, the other end of carrier bar (13) is fitted on another sliding rail (9)；
Even base component (2), even base component (2) include two horizontal segments being parallel to each other (201), two horizontal segments (201)
Between by vertical section (202) connect；The top of the vertical section (202) is connected with several tilting sections inclined upward
(203), the lower part of the vertical section (202) is connected with several tilting sections inclined downward (203)；The carrier bar (13)
Both ends are connected separately with company's base component (2).
2. Hot Metal in Beam Blank tundish fast replacing device according to claim 1, it is characterised in that: the both ends of the carrier bar (13)
It is respectively equipped with locating slot (1301), the two sides of each locating slot (1301) are respectively equipped with outwardly extending extension rod (3)；The company
The middle part of base component (2) upper horizontal section (201) is equipped with the positioning protrusion (2011) extended respectively to two sides, the positioning protrusion
(2011) top of the locating slot (1301) is hung on.
3. Hot Metal in Beam Blank tundish fast replacing device according to claim 2, it is characterised in that: installation in support frame as described above (1)
Have lifters (8), the side of the lifters (8) is coupled on the slideway in a vertical direction, the lifters (8)
The other side is equipped with the spur rack of vertical direction；The spur rack is engaged with transmission gear (7), the end of the transmission gear (7)
Portion is connect by drive rod (6) with the middle part of rotating disk (5)；The lifters (8) are connected in the middle part of the carrier bar (13)
On.
4. Hot Metal in Beam Blank tundish fast replacing device according to claim 1 to 3, it is characterised in that: support frame as described above
(1) bottom is equipped with several locating pieces (10).
5. Hot Metal in Beam Blank tundish fast replacing device according to claim 1 to 3, it is characterised in that: support frame as described above
(1) slag thickness meter (4) is equipped in, the slag thickness meter (4) is the silk thread disk for winding copper silk thread.
6. Hot Metal in Beam Blank tundish fast replacing device according to claim 1 to 3, it is characterised in that: support frame as described above
(1) top is equipped with laser range finder (11).
7. Hot Metal in Beam Blank tundish fast replacing device according to claim 1 to 3, it is characterised in that: support frame as described above
(1) top is equipped with infrared radiation thermometer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811076.6U CN208276170U (en) | 2018-05-29 | 2018-05-29 | Hot Metal in Beam Blank tundish fast replacing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820811076.6U CN208276170U (en) | 2018-05-29 | 2018-05-29 | Hot Metal in Beam Blank tundish fast replacing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208276170U true CN208276170U (en) | 2018-12-25 |
Family
ID=64705184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820811076.6U Expired - Fee Related CN208276170U (en) | 2018-05-29 | 2018-05-29 | Hot Metal in Beam Blank tundish fast replacing device |
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| Country | Link |
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| CN (1) | CN208276170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393481A (en) * | 2018-05-29 | 2018-08-14 | 马鞍山尚元冶金科技有限公司 | Hot Metal in Beam Blank tundish fast replacing device |
-
2018
- 2018-05-29 CN CN201820811076.6U patent/CN208276170U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393481A (en) * | 2018-05-29 | 2018-08-14 | 马鞍山尚元冶金科技有限公司 | Hot Metal in Beam Blank tundish fast replacing device |
| CN108393481B (en) * | 2018-05-29 | 2023-09-22 | 马鞍山尚元冶金科技有限公司 | Quick-changing device for special-shaped blank tundish |
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| CF01 | Termination of patent right due to non-payment of annual fee |