CN117300073A - Adjustable crystallizer - Google Patents
Adjustable crystallizer Download PDFInfo
- Publication number
- CN117300073A CN117300073A CN202311503725.8A CN202311503725A CN117300073A CN 117300073 A CN117300073 A CN 117300073A CN 202311503725 A CN202311503725 A CN 202311503725A CN 117300073 A CN117300073 A CN 117300073A
- Authority
- CN
- China
- Prior art keywords
- cavity
- side plate
- shell
- crystallizer
- adjustable
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000005507 spraying Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 238000009749 continuous casting Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 17
- 238000007711 solidification Methods 0.000 abstract description 8
- 230000008023 solidification Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to an adjustable crystallizer, which comprises a fixing component and an adjusting component, wherein the fixing component is positioned above the adjusting component, the fixing component comprises a first shell and a supporting frame, the first shell is arranged on the supporting frame, a first cavity is formed in the first shell, a molten metal inlet is formed in the upper end of the first cavity, the adjusting component comprises a second shell, the second shell comprises a first side plate and a second side plate, the first side plate and the second side plate are arranged in pairs, at least one of the second side plates can move along the first side plate, the first side plate and the second side plate are matched to form a second cavity, the second cavity is communicated with the first cavity, and an outlet is formed in the lower end of the second cavity. The metal liquid is always attached to the surface of the second shell in the solidification process by moving the second side plate, so that the solidified part and the inner wall of the second shell form a cavity due to solidification shrinkage in the continuous casting process is effectively prevented, and the metallurgical quality is improved.
Description
Technical Field
The invention relates to the technical field of continuous casting equipment, in particular to an adjustable crystallizer.
Background
Continuous casting is an important process in the metallurgical industry for producing high quality, high efficiency metallic materials. In the continuous casting process, the improvement of the continuous casting production speed is an important means for improving the production efficiency and reducing the production cost while ensuring that the metal forms uniform and compact crystal structures. However, in the solidification process of the conventional vertical continuous casting crystallizer, due to solidification shrinkage, a solidified part of the shell is easily separated from the crystallizer, and a travel cavity between the solidified shell and the inner wall of the crystallizer affects heat conduction and metallurgical quality, and simultaneously slows down continuous casting production efficiency.
Currently, in order to solve the problem of cavities in the continuous casting process, various solutions have been developed to increase the speed of drawing the billets in the continuous casting process. For example, chinese patent CN201310591361.3 discloses a process for preparing a metal ceramic coating on the surface of a copper plate of a continuous casting mold, which comprises covering a ceramic coating on the inner wall of the continuous casting mold, increasing the friction between the metal and the inner wall, preventing the metal from separating from the inner wall, but adding the coating easily causes casting blank pollution. Chinese patent CN202221474111.2 discloses a vibrating mechanism for a crystallizer, which is provided with a vibrating device at the bottom of the crystallizer, and promotes the contact between metal and the inner wall through vibration, so as to prevent the formation of a cavity, and the vibration can only ensure short contact, while the continuous casting speed is not effectively improved yet. Chinese patent CN202310586197.0 discloses a cavity model method for a funnel-shaped crystallizer of a thin slab caster, which adopts a free-form surface crystallizer, so that metal always fits the surface of the crystallizer, preventing cavity formation, the surface crystallizer can only adapt to continuous casting billets with a single section, and is limited by curvature, and the setting range of technological parameters is also affected.
Therefore, how to better solve the problem of the cavity in the continuous casting process, effectively ensure the metallurgical quality, improve the continuous casting efficiency and become the problem to be solved.
Disclosure of Invention
The present invention aims to solve one or more of the above technical problems by providing an adjustable crystallizer.
The technical scheme for solving the technical problems is as follows: the utility model provides an adjustable crystallizer, includes fixed subassembly and adjusting part, fixed subassembly is located adjusting part's top, fixed subassembly includes first casing and support frame, first casing is installed on the support frame, be equipped with first die cavity on the first casing, the upper end of first die cavity is equipped with the molten metal entry, adjusting part includes the second casing, the second casing is including the first curb plate that sets up in pairs and the second curb plate that sets up in pairs, at least one of them the second curb plate can be followed first curb plate removes, first curb plate with the cooperation of second curb plate is formed with the second die cavity, the second die cavity with first die cavity intercommunication, the lower extreme of second die cavity is equipped with the export.
On the basis of the technical scheme, the invention can also make the following improvements for the technical scheme in order to achieve the convenience of use and the stability of equipment:
preferably, the adjusting assembly further comprises a lifting bracket on which the second housing is mounted.
Preferably, the sliding device further comprises a sliding piece, wherein the sliding piece is connected with the second side plate, a guide pin is arranged on the sliding piece, a corresponding sliding groove is formed in the upper end of the first side plate, and the guide pin is slidably inserted into the sliding groove.
Preferably, the second side plate is of a hollow structure, a second water inlet and a second water spraying channel are arranged on the second side plate, and a water spraying port of the second water spraying channel is positioned at the lower end of the second cavity.
Preferably, the first side plate is of a hollow structure, and a third water inlet is formed in the first side plate.
Preferably, a first cooling cavity is arranged on the outer side of the first cavity, a first water spraying channel and a first water inlet are arranged on the first cooling cavity, and a water spraying port of the first water spraying channel is positioned at the lower end of the first cavity.
Preferably, graphite sleeves are arranged on the inner side walls of the first cavity and the second cavity.
Preferably, a copper sleeve is arranged on the outer side of the graphite sleeve.
Preferably, the distance of the up-and-down movement of the lifting support is 30mm-50mm.
Preferably, the speed of movement of the second side plate is 1 mm/s-2 mm/s.
The beneficial effects of the invention are as follows: the metal liquid is always attached to the surface of the second shell in the solidification process by moving the second side plate, so that the solidified part and the inner wall of the second shell form a cavity due to solidification shrinkage in the continuous casting process is effectively prevented, and the metallurgical quality is improved. The second shell of the crystallizer moves downwards along with the cast ingot by a distance through the liftable support, so that the cooling speed is increased, the blank pulling speed is effectively improved, and the production efficiency is improved. No additional coating, vibration device or complicated free-form surface crystallizer design and manufacture is needed, thereby reducing equipment cost and maintenance cost.
Drawings
FIG. 1 is a schematic perspective view of an adjustable crystallizer of the present invention;
FIG. 2 is a cross-sectional view of an adjustable crystallizer according to the present invention
FIG. 3 is a schematic view of the upper housing of the present invention;
FIG. 4 is a schematic view of the structure of the adjusting assembly of the present invention;
fig. 5 is a schematic top view of an adjustment assembly of the present invention.
The reference numerals are recorded as follows: 1. a first cavity; 2. a bottom plate; 3. a copper sleeve; 4. a graphite sleeve; 5. a slider; 6. a first cooling chamber; 7. a first water spray channel; 8. a first water inlet; 9. a second water inlet; 10. a third water inlet; 11. a chute; 12. a lifting bracket; 13. a support frame; 14. a second cavity; 15. a guide pin; 16. a first side plate; 17. a second side plate; 18. a second water spray channel; 19. a first support plate; 20. and a second support plate.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1 to 5, the invention discloses an adjustable crystallizer, which comprises a fixing component and an adjusting component, wherein the fixing component is positioned above the adjusting component, the fixing component comprises a first shell and a supporting frame 13, the first shell is arranged on a first supporting plate 19 of the supporting frame 13, the first shell is 100-150 mm in height and 300-600 mm in length, 55-150 mm in width, a first cavity 1 is arranged on the first shell, a metal liquid inlet is arranged at the upper end of the first cavity 1, the adjusting component comprises a second shell, the second shell comprises a first side plate 16 and a second side plate 17 which are arranged in pairs, the first side plate 16 and the second side plate 17 enclose a hollow cuboid, the second shell is 100-150 mm in height, the length and the width of at least one second side plate 17 can move along the first side plate 16, the first side plate 16 and the second side plate 17 are matched to form a second cavity 1, the second side plate 14 is tightly fitted with the second cavity 14 through the second cavity 14, and the second cavity 14 is tightly fitted with the second cavity 14 when the second cavity 14 is tightly cooled, and the second cavity 14 is tightly fitted with the second cavity 14.
The adjusting assembly further comprises a lifting support 12, the second shell is arranged on a second supporting plate 20 of the lifting support 12, and the up-and-down moving distance of the lifting support 12 is 30-50 mm. In the continuous casting process, the lifting support 12 drives the second shell to move up and down, so that the ingot cooling is accelerated, and the billet drawing speed is improved.
In this embodiment, lifting support 12 and support frame 13 all are equipped with four, improve the stability that supports, and lifting support 12 and support frame 13 install on bottom plate 2, and support frame 13 is located lifting support 12's the outside, is equipped with the through-hole on bottom plate 2 under the second die cavity 14, and the ingot casting of being convenient for in the dummy ingot post through the through-hole will be pulled down the base in the second casing. The dummy ingot column is located below the crystallizer, and under the action of the dummy ingot column, the casting blank can move downwards along the crystallizer, so that continuous casting is realized, wherein the dummy ingot column adopts the prior art and is not shown in the figure.
The adjustable crystallizer further comprises a slider 5, the slider 5 is connected with the second side plate 17, a guide pin 15 is arranged on the slider 5, a corresponding sliding groove 11 is arranged on the first side plate 16, the guide pin 15 is slidably inserted into the sliding groove 11, and the length of the sliding groove 11 is 20-30 mm. The guide pin 15 is matched with the chute 11 to play a role in guiding the movement of the second side plate 17, so that the movement stability of the second side plate 17 is ensured.
In this embodiment, the slider 5 and the second side plate 17 are in an integral structure, and the slider 5 and the second side plate 17 are integrally T-shaped, so that the structure is simple and the installation is convenient. The slide 5 and the second side plate 17 may be in a detachable and separated structure, and the guiding function of the second side plate 17 may be realized.
The outside of first die cavity 1 is equipped with first cooling chamber 6, be equipped with first water spray channel 7 and first water inlet 8 on the first cooling chamber 6, the water jet of first water spray channel 7 is located the lower extreme of first die cavity 1. The inclination angle delta of the first water spraying channel 7 is 15-30 degrees, preferably 20 degrees, if the inclination angle is smaller, water cooling can not be obtained for a long time for the ingot, the ingot molding time is influenced, and when the angle is larger, the splash of cooling water sprayed onto the ingot is serious, and the ingot quality is influenced. Cooling water enters the first cooling cavity 6 from the first water inlet 8 to cool the molten metal in the first cavity 1, the forming speed of the molten metal is improved, the first water spraying channel 7 sprays cooling water to the casting at the outlet of the first shell, the forming speed of the casting is further improved, the casting is ensured to obtain finer tissues, and the metallurgical quality is effectively ensured.
The first side plate 16 is of a hollow structure, and the first side plate 16 is provided with a third water inlet 10. In this embodiment, the two second side plates 17 move along the first side plate 16 under the action of the driving device, the second side plates 17 are hollow, the second side plates 17 are provided with a second water inlet 9 and a second water spraying channel 18, the inclination angle of the second water spraying channel 18 is the same as that of the first water spraying channel 7, and the water spraying port of the second water spraying channel 18 is located at the lower end of the second cavity 14. The four side walls of the second cavity 14 are all provided with cooling water, so that the casting in the second cavity 14 is uniformly cooled, and the casting quality is ensured.
The inner walls of the first cavity 1 and the second cavity 14 are respectively provided with a graphite sleeve 4, so that the smoothness of the inner walls is ensured, the casting and the inner walls are tightly attached in the solidification process of molten metal, and the molding quality of the casting is ensured.
Further, the copper sleeve 3 is arranged on the outer side of the graphite sleeve 4, the copper sleeve 3 has good heat conduction performance, molten steel can be rapidly cooled and solidified in the crystallizer, forming speed is improved, the steel sleeve is arranged on the outer side of the copper sleeve 3, structural strength of the first shell and the second shell is guaranteed, and service life of the crystallizer is prolonged.
In the embodiment, the height of the first shell is 120mm, the length direction is 400mm, the width direction is 100mm, the second shell and the first shell have the same size, and in the continuous casting process, the billet drawing speed is 50 mm/min-60 mm/min, wherein the billet drawing speed is the speed of a dummy ingot column for drawing a casting blank from the first cavity 1 and the second cavity 14, and the metal temperature is 1120-1200 ℃. During continuous casting, molten metal is cooled in the first cavity 1 to form a shell, a casting blank is pulled downwards through a dummy ingot column, meanwhile, the second shell moves downwards under the drive of the lifting support 12, the second side plate 17 of the second shell moves inwards by 3-5 mm along the first side plate 16 under the drive of the driving device, and the moving speed of the second side plate 17 is 1-2 mm/s. And a dummy ingot column is arranged below the molten metal, the downward moving speeds of the dummy ingot column are different according to the size of the crystallizer, and the downward moving speed of the dummy ingot column is slower. When molten metal is in the first cavity 1, the molten metal forms a shell after cooling, corresponding shrinkage can occur, at this moment, a gap is formed between a casting blank and the first cavity 1, then the casting blank and a dummy ingot column enter the second cavity 14, two second side plates 17 move inwards to the surface of the casting blank, meanwhile, the second shell moves downwards along with the casting blank and the dummy ingot column under the action of the lifting support 12, the casting blank is continuously cooled and formed in the process, then the second side plates 17 and the lifting support 12 return to the original position, at this moment, the casting blank solidified in the first cavity 1 to form the shell continuously enters the second cavity 14 downwards, the process is repeated all the time, the casting blank cooling process is guaranteed, the blank drawing speed can be effectively improved, and the production efficiency is improved. When the casting blank is in the second cavity 14, the second side plate 17 is tightly attached to the surface of the metal casting blank, so that a cavity is effectively prevented from being formed between a solidified part and the inner wall of the second cavity 14 due to solidification and shrinkage of metal in the continuous casting process, and cooling water is arranged in the second side plate 17, so that the cooling of the metal casting blank can be accelerated, the blank drawing speed is improved, the production efficiency is further improved, and the heat conduction and the casting quality are improved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides an adjustable crystallizer, its characterized in that, includes fixed subassembly and adjusting part, fixed subassembly is located adjusting part's top, fixed subassembly includes first casing and support frame (13), first casing is installed on support frame (13), be equipped with first die cavity (1) on the first casing, the upper end of first die cavity (1) is equipped with the molten metal entry, adjusting part includes the second casing, the second casing is including first curb plate (16) that set up in pairs and second curb plate (17) that set up in pairs, at least one of them second curb plate (17) can be followed first curb plate (16) remove, first curb plate (16) with second curb plate (17) cooperation is formed with second die cavity (14), second die cavity (14) with first die cavity (1) intercommunication, the lower extreme of second die cavity (14) is equipped with the export.
2. The adjustable crystallizer as in claim 1, wherein the adjustment assembly further comprises a lifting bracket (12), the second housing being mounted on the lifting bracket (12).
3. Adjustable crystallizer as in claim 1 or 2, characterized in that it further comprises a slide (5), said slide (5) being connected to said second side plate (17), a guide pin (15) being provided on said slide (5), a corresponding runner (11) being provided on the upper end of said first side plate (16), said guide pin (15) being slidingly inserted in said runner (11).
4. The adjustable crystallizer as in claim 1, wherein the second side plate (17) is of a hollow structure, a second water inlet (9) and a second water spraying channel (18) are arranged on the second side plate (17), and a water spraying port of the second water spraying channel (18) is positioned at the lower end of the second cavity (14).
5. The adjustable crystallizer as in claim 1, wherein the first side plate (16) is hollow, and a third water inlet (10) is provided on the first side plate (16).
6. The adjustable crystallizer as in claim 1, 4 or 5, wherein a first cooling cavity (6) is arranged on the outer side of the first cavity (1), a first water spraying channel (7) and a first water inlet (8) are arranged on the first cooling cavity (6), and a water spraying port of the first water spraying channel (7) is positioned at the lower end of the first cavity (1).
7. Adjustable crystallizer as in claim 1, characterized in that the inner side walls of the first cavity (1) and the second cavity (14) are each provided with a graphite sleeve (4).
8. The adjustable crystallizer as in claim 7, wherein the outer side of the graphite sleeve (4) is provided with a copper sleeve (3).
9. An adjustable mould according to claim 2, characterized in that the lifting support (12) is moved up and down a distance of 30-50 mm.
10. An adjustable crystallizer as in claim 1, characterized in that the speed of movement of the second side plate (17) is comprised between 1mm/s and 2mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503725.8A CN117300073A (en) | 2023-11-13 | 2023-11-13 | Adjustable crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503725.8A CN117300073A (en) | 2023-11-13 | 2023-11-13 | Adjustable crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117300073A true CN117300073A (en) | 2023-12-29 |
Family
ID=89286720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311503725.8A Pending CN117300073A (en) | 2023-11-13 | 2023-11-13 | Adjustable crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117300073A (en) |
-
2023
- 2023-11-13 CN CN202311503725.8A patent/CN117300073A/en active Pending
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