CN220092979U - Foot roller section structure of rectangular billet continuous casting machine for continuous casting of high grade special steel - Google Patents
Foot roller section structure of rectangular billet continuous casting machine for continuous casting of high grade special steel Download PDFInfo
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- CN220092979U CN220092979U CN202321059891.9U CN202321059891U CN220092979U CN 220092979 U CN220092979 U CN 220092979U CN 202321059891 U CN202321059891 U CN 202321059891U CN 220092979 U CN220092979 U CN 220092979U
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- continuous casting
- nozzle assembly
- roller set
- roller
- crystallizer
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 13
- 239000007787 solid Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The utility model relates to the technical field of continuous casting machines, in particular to a foot roller section structure of a rectangular billet continuous casting machine for casting high-quality steel, which comprises a front nozzle assembly, a rear nozzle assembly, a side nozzle assembly, a front roller set, a rear roller set and a side roller set, wherein the front roller set, the rear roller set and the side roller set are respectively provided with at least one set of rollers from top to bottom, the front nozzle assembly, the rear nozzle assembly and the side nozzle assembly are respectively provided with a main pipe, the main pipes are respectively provided with at least one set of nozzles, the nozzles and the rollers are arranged in a staggered manner, the side nozzle assemblies are respectively provided with a branch pipe at the mouth of a copper sleeve of a crystallizer, and the nozzles are arranged at the two ends of each branch pipe.
Description
Technical Field
The utility model relates to the technical field of continuous casting machines, in particular to a foot roller section structure of a rectangular billet continuous casting machine for continuous casting of excellent special steel.
Background
In the continuous casting production process of the continuous casting machine, after the first cooling section of the crystallizer is finished, a solid blank shell is formed to wrap the high-temperature molten steel and enter the second cooling section. In order to ensure smooth and stable cooling of the cast strand in the secondary cooling zone, the solid shell leaving the copper tube of the crystallizer must have a safe thickness. If the thickness of the solid blank shell is too low, tearing and remelting are easy to occur at the weakest part of the blank shell, and steel leakage accidents are generated. The main function of a cold section is to ensure that the solid blank shell after leaving the copper tube reaches or exceeds a safe thickness around it and has no internal stress that can create defects. The foot roller sections are arranged between the first cooling section and the second cooling section for butt joint, the foot rollers can provide support for the casting blank, the occurrence of bulging and steel leakage of the casting blank is reduced, and the abrasion of the casting blank to the lower opening of the copper pipe of the crystallizer can be reduced. The existing part of scheme is that a nozzle is arranged on a foot roller section, the casting blank is continuously cooled, the thickness of a solid blank shell is improved, but the installation space of the nozzle of the foot roller section is not easy to set due to the limitation of the foot roller spacing and an electromagnetic stirrer of a crystallizer, and the surface of the casting blank is unevenly cooled. Common four-side nozzle arrangement structure can not efficiently cool casting blank corners by cooling water, so that the risk of corner tearing is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a foot roller section structure of a rectangular billet continuous casting machine for continuous casting of high grade steel.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a high-quality steel continuous casting rectangular billet continuous casting machine foot roller section structure, includes preceding nozzle assembly, back nozzle assembly, side nozzle assembly, preceding roller group, back roller group and side roller group are located around the oral area of crystallizer copper sheathing respectively, and all from the top down are equipped with at least a set of roller, the roller sets up along the arc route that the casting blank flows, preceding nozzle assembly, back nozzle assembly, side nozzle assembly are located the outside of preceding roller group, back roller group and side roller group respectively, and all are equipped with the person in charge, all be equipped with at least a set of nozzle from the top down on the person in charge, the nozzle is crisscross with the position setting of roller, side nozzle assembly is located the oral area of crystallizer copper sheathing all and is equipped with the branch pipe, the both ends of branch pipe are equipped with the nozzle that the spray direction just to the casting blank bight.
According to another embodiment of the utility model, the front roller set and the rear roller set are respectively provided with a mounting plate, a connecting plate and two side plates, wherein the mounting plates are fixed at the bottom of the crystallizer, and the rollers are respectively and rotatably arranged between the side plates.
According to another embodiment of the utility model, the side roller set is provided with a set of rollers, the front roller set and the rear roller set are respectively provided with three sets of rollers, and the front nozzle assembly, the rear nozzle assembly and the side nozzle assembly are correspondingly provided with three sets of nozzles.
According to another embodiment of the utility model, the spray range of the nozzle is conical and the conical angle is 90 degrees.
According to another embodiment of the utility model, further comprising, the nozzles are all water nozzles.
According to another embodiment of the utility model, the crystallizer is further provided with a cooling water cavity, and the upper ends of the main pipes penetrate through the bottom plate of the crystallizer and are communicated with the cooling water cavity.
The continuous casting mold has the beneficial effects that the casting blank is continuously cooled in the foot roller section, the cooling requirement of the casting blank in the mold is reduced, the thickness of a safe blank shell of the casting blank is ensured, the system pulling speed can be improved, the casting blank production efficiency is improved, the cooling effect of the corner of the casting blank is ensured, the close-packed nozzles are arranged to uniformly cool the whole casting blank, the thickness consistency of the blank shell is good, the continuous shaping of the casting blank by the secondary cooling section is facilitated, and the precision of the casting blank is improved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic illustration in semi-section of the present utility model;
FIG. 2 is a schematic bottom view of the present utility model;
FIG. 3 is a schematic left-hand view of the present utility model;
in the figure, a crystallizer 1, a front nozzle assembly 2, a rear nozzle assembly 3, a side nozzle assembly 4, a front roller set 5, a rear roller set 6, a side roller set 7, a mounting plate 8, a side plate 9, a connecting plate 10, a branch pipe 11, a cooling water cavity 12 and a main pipe 13 are shown.
Detailed Description
Fig. 1-3 are schematic structural views of the foot roller section structure of the rectangular billet continuous casting machine for casting special steel, which comprises a front nozzle assembly 2, a rear nozzle assembly 3, a side nozzle assembly 4, a front roller set 5, a rear roller set 6 and a side roller set 7, wherein the front roller set 5, the rear roller set 6 and the side roller set 7 are respectively positioned around the mouth of a copper sleeve of a crystallizer 1, at least one group of rollers are respectively arranged from top to bottom, the rollers are arranged along an arc-shaped path of casting billet outflow, the front nozzle assembly 2, the rear nozzle assembly 3 and the side nozzle assembly 4 are respectively positioned outside the front roller set 5, the rear roller set 6 and the side roller set 7, a main pipe 13 is respectively arranged on the main pipe 13 from top to bottom, the nozzles and the positions of the rollers are staggered, the mouth of the copper sleeve of the crystallizer 1 of the side nozzle assembly 4 is respectively provided with a branch pipe 11, and two ends of the branch pipe 11 are respectively provided with nozzles of which spray directions are opposite to the corners of the casting billet.
The casting blank flows out from the opening of the copper sleeve of the crystallizer 1, and each roller guides the flow direction of the casting blank so that the casting blank enters the secondary cooling section along a designed arc line. And meanwhile, the periphery of the casting blank is cooled by a plurality of groups of nozzles, the nozzles on the uppermost branch pipe 11 cool the angle of the casting blank when the casting blank just flows out, the thickness marking of the whole safe blank shell of the casting blank is ensured, and the problem of corner tearing when the pulling speed is faster is avoided. Through the arrangement of the close-packed nozzles, the casting blank is cooled more uniformly. The water mist of each nozzle passes through the neutral gear of each roller group to be sprayed to the surface of the casting blank.
The flow direction of the casting blank is arc-shaped, and the distances from the nozzles around the arc-shaped casting blank to the surface of the casting blank are basically equal.
The number of the nozzles facing the rectangular blank plane is multiple according to the width of the blank, so that the roller spacing can be reduced and uniform cooling can be ensured.
Preferably, the front roller set 5 and the rear roller set 6 are respectively provided with a mounting plate 8, a connecting plate 10 and two side plates 9, the mounting plates 8 are fixed at the bottom of the crystallizer 1, and the rollers are respectively rotatably arranged between the side plates 9. Through setting up great neutral, dodge nozzle spraying or water spray scope, make casting blank more surface direct contact cooling water.
Preferably, the side roller set 7 is provided with a set of rollers, the front roller set 5 and the rear roller set 6 are respectively provided with three sets of rollers, and the front nozzle assembly 2, the rear nozzle assembly 3 and the side nozzle assembly 4 are correspondingly provided with three sets of nozzles. The side roller group 7 is less in stress, and only one group is arranged, so that the side nozzle assembly 4 is conveniently avoided. The front roller set 5 and the rear roller set 6 are respectively provided with three sets of rollers, so that stable support and guide are provided for casting blanks, and the abrasion of the rollers is slowed down.
Preferably, the spray range of the nozzle is conical, and the conical angle is 90 degrees.
Preferably, the nozzles are all water-full nozzles. The water spray cooling rate is faster. The model of the all-water nozzle is 3/8PZ6780QZ2, compressed air is not needed to be used for the all-water nozzle, the cost for producing excellent steel can be reduced, and the cooling effect is better.
Preferably, the crystallizer 1 is provided with a cooling water cavity 12, and the upper ends of the main pipes 13 all penetrate through the bottom plate of the crystallizer 1 and are communicated with the cooling water cavity 12. The main pipe 13 is convenient to install, cooling water in the crystallizer 1 can be directly used, and water paths are convenient to arrange.
The above description is illustrative of the utility model and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, changes or equivalents may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. The utility model provides a high-quality steel continuous casting rectangular billet continuous casting machine foot roller section structure, characterized by, including preceding nozzle assembly (2), back nozzle assembly (3), side nozzle assembly (4), preceding roller set (5), back roller set (6) and side roller set (7) are located around the oral area of crystallizer (1) copper sheathing respectively, and all from the top down are equipped with at least one set of roller, the roller sets up along the arc route that the casting blank flows, the outside of preceding nozzle assembly (2), back nozzle assembly (3), side nozzle assembly (4) are located preceding roller set (5), back roller set (6) and side roller set (7) respectively, and all are equipped with and be responsible for (13), all be equipped with at least a set of nozzle on being responsible for (13) from the top down, the position of nozzle and roller is crisscross to be set up, side nozzle assembly (4) are located the oral area of crystallizer (1) copper sheathing all are equipped with branch pipe (11), the both ends of branch pipe (11) are equipped with the nozzle just to the casting blank of direction.
2. The foot roller section structure of the you special steel continuous casting rectangular billet continuous casting machine according to claim 1, characterized in that the front roller set (5) and the rear roller set (6) are both provided with a mounting plate (8), a connecting plate (10) and two side plates (9), the mounting plate (8) is fixed at the bottom of the crystallizer (1), and the rollers are both rotatably installed between the side plates (9).
3. The foot roller section structure of the you special steel continuous casting rectangular billet continuous casting machine according to claim 1, wherein the side roller set (7) is provided with a set of rollers, the front roller set (5) and the rear roller set (6) are respectively provided with three sets of rollers, and the front nozzle assembly (2), the rear nozzle assembly (3) and the side nozzle assembly (4) are correspondingly provided with three sets of nozzles.
4. The foot roll segment structure of a rectangular slab caster for continuous casting of you-particular steel according to claim 1, wherein the spray range of the nozzle is conical and the conical angle is 90 degrees.
5. The foot roll segment structure of a you special steel continuous casting rectangular blank continuous casting machine according to claim 1, wherein the nozzles are all water nozzles.
6. The foot roll section structure of the you special steel continuous casting rectangular billet caster according to claim 1, characterized in that the crystallizer (1) is provided with a cooling water cavity (12), and the upper ends of the main pipes (13) all penetrate through the bottom plate of the crystallizer (1) and are communicated with the cooling water cavity (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059891.9U CN220092979U (en) | 2023-05-06 | 2023-05-06 | Foot roller section structure of rectangular billet continuous casting machine for continuous casting of high grade special steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059891.9U CN220092979U (en) | 2023-05-06 | 2023-05-06 | Foot roller section structure of rectangular billet continuous casting machine for continuous casting of high grade special steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220092979U true CN220092979U (en) | 2023-11-28 |
Family
ID=88871800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321059891.9U Active CN220092979U (en) | 2023-05-06 | 2023-05-06 | Foot roller section structure of rectangular billet continuous casting machine for continuous casting of high grade special steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220092979U (en) |
-
2023
- 2023-05-06 CN CN202321059891.9U patent/CN220092979U/en active Active
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