CN212310798U - Side pressure withdrawal and straightening machine and continuous casting machine thereof - Google Patents
Side pressure withdrawal and straightening machine and continuous casting machine thereof Download PDFInfo
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- CN212310798U CN212310798U CN202020727611.7U CN202020727611U CN212310798U CN 212310798 U CN212310798 U CN 212310798U CN 202020727611 U CN202020727611 U CN 202020727611U CN 212310798 U CN212310798 U CN 212310798U
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Abstract
The utility model provides a side pressure draws machine of rectifying and conticaster thereof, side pressure draws the machine of rectifying and includes: the guide device is provided with at least one sliding groove group, and the extending direction of each sliding groove group is perpendicular to the advancing direction of the casting blank; the side roller sets are arranged in the sliding groove sets in a sliding mode, the number of the side roller sets corresponds to that of the sliding groove sets, and each side roller set can be abutted against the side face of the casting blank; the driving assembly is in driving connection with the side roller sets, and the driving assembly can drive the side roller sets to slide in the corresponding sliding groove sets. The beneficial effects of the utility model are that, above-mentioned at least a set of side roller set can carry out the operation of pushing down to the side of casting blank under drive assembly's effect, avoids the casting blank to receive perpendicularly to pushing down and the risk that produces middle crackle with the aligning simultaneously, can promote the inside quality of casting blank.
Description
Technical Field
The utility model relates to a continuous casting technical field in the steel production, concretely relates to side pressure withdrawal and straightening machine and conticaster thereof.
Background
With the development of the steel industry, users have higher and higher requirements on the quality of steel products. The central segregation and porosity of the cast blank can seriously affect the performance of the steel, and cause a series of quality defects. Defects on the casting blank are difficult to effectively eliminate in the subsequent heating and rolling processes, so that the quality of the final product is influenced.
The casting blank soft reduction technology compensates the solidification shrinkage of the casting blank by applying pressure near the tail end of the liquid core of the continuous casting blank to generate a certain reduction, and can effectively eliminate center segregation and porosity. The application of the soft reduction technology in square billet production of special steel enterprises is common at present. At present, the soft reduction technology adopts unidirectional reduction of an upper roller, and because the casting blank structure and defects are directional under unidirectional reduction, the upper roller is usually simultaneously pressed with the straightening of the casting blank, so that the risk of intermediate cracks is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a side pressure withdrawal and straightening machine and conticaster thereof to reach the purpose that promotes the inside quality of casting blank.
The utility model provides a technical scheme that its technical problem adopted is: a lateral pressure withdrawal and straightening machine comprises: the guide device is provided with at least one sliding groove group, and the extending direction of each sliding groove group is perpendicular to the advancing direction of the casting blank; the side roller sets are arranged in the sliding groove sets in a sliding mode, the number of the side roller sets corresponds to that of the sliding groove sets, and each side roller set can be abutted against the side face of the casting blank; the driving assembly is in driving connection with the side roller sets, and the driving assembly can drive the side roller sets to slide in the corresponding sliding groove sets.
Furthermore, the guiding device comprises an upper guiding device and a lower guiding device, the upper guiding device and the lower guiding device are arranged at intervals in the vertical direction, each sliding groove group comprises an upper sliding groove arranged on the upper guiding device and a lower sliding groove arranged on the lower guiding device, and the upper sliding groove corresponds to the lower sliding groove in position.
Further, every side roller set all includes two side rollers that the structure is the same, and two side rollers set up along the horizontal direction symmetric spacing, form the space that is used for holding the casting blank between two side rollers, and the upper end of every side roller all is connected with the last sliding tray that corresponds, and the lower extreme of every side roller all is connected with the lower sliding tray that corresponds.
Furthermore, the number of the driving assemblies corresponds to the number of the side rollers, each driving assembly comprises a hydraulic cylinder and a side pressure lower frame, the side rollers are mounted on the side pressure lower frames, and the hydraulic cylinders are in driving connection with the side pressure lower frames.
Furthermore, the two driving assemblies are symmetrically arranged on two sides of the casting blank, each driving assembly comprises a hydraulic cylinder and a side pressure lower frame, a plurality of side rollers positioned on the first side of the casting blank are all arranged on one side pressure lower frame, a plurality of side rollers positioned on the second side of the casting blank are all arranged on the other side pressure lower frame, and each hydraulic cylinder is in driving connection with the corresponding side pressure lower frame.
Further, each hydraulic cylinder is provided with a displacement sensor and a hydraulic control valve.
Furthermore, the side pressure withdrawal and straightening machine further comprises a frame which is of a rectangular structure, the lower guide device is arranged on the lower side of the frame, the upper guide device is arranged on the upper side of the frame, and the hydraulic cylinder is fixedly arranged on the corresponding side edge of the frame.
The utility model also provides a continuous casting machine, including the pans that set gradually, immersion nozzle, crystallizer vibrating device, movable section, canned paragraph, vertical compression tension leveler, side pressure tension leveler, flame cutting machine and the roll table of throwing out, the side pressure tension leveler is foretell side pressure tension leveler.
Furthermore, the number of the direct-pressure withdrawal and straightening machines and the number of the lateral-pressure withdrawal and straightening machines are multiple, the multiple direct-pressure withdrawal and straightening machines and the multiple lateral-pressure withdrawal and straightening machines are alternately arranged along the advancing direction of the casting blank to form withdrawal and straightening sections, and the tail parts of the withdrawal and straightening sections are the direct-pressure withdrawal and straightening machines.
The beneficial effects of the utility model are that, above-mentioned at least a set of side roller set can carry out the operation of pushing down to the side of casting blank under drive assembly's effect, avoids the casting blank to receive perpendicularly to pushing down and the risk that produces middle crackle with the aligning simultaneously, can promote the inside quality of casting blank.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a lateral pressure withdrawal and straightening machine according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a continuous casting machine according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the direct compression withdrawal and straightening unit in fig. 2.
Reference numbers in the figures: 1. an intermediate tank; 2. an immersion nozzle; 3. a crystallizer; 4. a crystallizer vibration device; 5. an active segment; 6. casting blanks; 7. a fixed section; 8. a direct-compression withdrawal and straightening machine; 801. a direct-pressing frame; 802. a lower roll; 803. Upper roll; 804. a pressing device; 805. a direct-pressure driving device; 9. a lateral pressure withdrawal and straightening machine; 901. a frame; 902. a lower guide; 903. a hydraulic cylinder; 904. laterally pressing the lower frame; 905. a side roller; 906. an upper guide device; 10. cutting the machine with fire; 11. and (4) a knockout roller way.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the embodiment of the present invention provides a side pressure withdrawal and straightening machine, which comprises a guiding device, at least one set of side roller sets and a driving assembly. The guide device is provided with at least one sliding groove group, and the extending direction of each sliding groove group is perpendicular to the advancing direction of the casting blank; at least one group of side roller sets can be arranged in the sliding groove group in a sliding mode, the number of the side roller sets corresponds to that of the sliding groove group, and each group of side roller sets can be abutted to the side face of the casting blank; the driving assembly is in driving connection with the side roller sets, and the driving assembly can drive the side roller sets to slide in the corresponding sliding groove sets.
The side face of the casting blank can be subjected to reduction operation under the action of the driving assembly by the at least one group of side roller sets, so that the risk that middle cracks are generated when the casting blank is subjected to vertical reduction and straightening is avoided, and the internal quality of the casting blank can be improved.
Specifically, the guiding device includes an upper guiding device 906 and a lower guiding device 902, the upper guiding device 906 and the lower guiding device 902 are arranged at intervals along the vertical direction, each sliding groove group includes an upper sliding groove arranged on the upper guiding device 906 and a lower sliding groove arranged on the lower guiding device 902, and the upper sliding groove corresponds to the lower sliding groove.
The purpose of arranging the upper sliding groove and the lower sliding groove is to enable the side roller set to be smoother in the sliding process, so that blocking cannot occur, and the driving assembly is convenient to control the reduction to ensure the internal quality of the casting blank. Meanwhile, the parallelism of the side roller set during reduction can be ensured, the side roller set is not formed into a wedge shape, and the casting blank is not biased.
Every side roller set all includes two side rollers 905 that the structure is the same, and two side rollers 905 set up along horizontal direction symmetric interval, forms the space that is used for holding the casting blank between two side rollers 905, and the upper end of every side roller 905 all is connected with the last sliding tray that corresponds, and the lower extreme of every side roller 905 all is connected with the lower sliding tray that corresponds.
The two side rolls 905 having the same structure can simultaneously reduce two side surfaces of the casting blank, and can ensure that the reduction amounts are the same or independent from each other as required, and can be applied to different types of casting blanks.
In one of the embodiments of the utility model, the quantity of drive assembly corresponds with side roller 905 quantity, and every drive assembly all includes pneumatic cylinder 903 and side pressure underframe 904, and side roller 905 is installed on side pressure underframe 904, and pneumatic cylinder 903 and side pressure underframe 904 are connected in the drive.
That is, one drive unit is attached to each side roll 905, and the reduction amounts of the side rolls 905 are independent of each other, so that the same or different pressures can be applied to different positions of the same casting product, and the casting product can be produced more flexibly.
In another embodiment, the two driving assemblies are symmetrically arranged on two sides of the casting block, each driving assembly comprises a hydraulic cylinder 903 and a side pressure lower frame 904, a plurality of side rollers 905 positioned on the first side of the casting block are arranged on one side pressure lower frame 904, a plurality of side rollers 905 positioned on the second side of the casting block are arranged on the other side pressure lower frame 904, and each hydraulic cylinder 903 is in driving connection with the corresponding side pressure lower frame 904.
The plurality of side rolls 905 positioned on the same side of the casting blank are all arranged on the same side pressure lower frame 904, and the side pressure lower frame 904 is driven by the corresponding hydraulic cylinders 903, so that the rolling reduction of the plurality of side rolls 905 is consistent, and the problem of casting blank deflection is avoided.
Preferably, each of the hydraulic cylinders 903 in the above two embodiments is provided with a displacement sensor and a hydraulic control valve. The displacement sensor is provided, and a hydraulic control valve having a soft-pressing function is provided, so that accurate control of the displacement and pressure of the hydraulic cylinder 903 can be achieved.
Further, as shown in fig. 1, the lateral pressure straightening and withdrawal machine in the embodiment of the present invention further includes a frame 901, which is a rectangular structure, a lower guide 902 is disposed at the lower side of the frame 901, an upper guide 906 is disposed at the upper side of the frame 901, and a hydraulic cylinder 903 is fixedly disposed at the corresponding side of the frame 901.
The frame 901 can ensure the installation stability of each component, and the frame 901 can protect each component.
It should be noted that, in order to save space, the embodiment of the present invention provides a side pressure withdrawal and straightening machine without a driving device, that is, the side roll 905 is not provided with a device for driving the side roll to rotate. Of course, a driving device may be added to drive the side roller 905 to rotate according to different requirements.
As shown in fig. 2, the utility model also provides a continuous casting machine, including the pans 1, immersion nozzle 2, crystallizer 3, crystallizer vibrating device 4, movable section 5, fixed segment 7, vertical compression withdrawal and straightening unit 8, side pressure withdrawal and straightening unit 9, flame cut unit 10 and knockout roll table 11 that set gradually, side pressure withdrawal and straightening unit 9 is foretell side pressure withdrawal and straightening unit 9.
Molten steel flows into a tundish 1 from a ladle and then enters a crystallizer 3 through a submerged nozzle 2, after a casting blank 6 is solidified into a blank shell in the crystallizer 3, the casting blank 6 descends to enter a movable section 5 and then enters a fixed section 7, and then enters a direct-pressure withdrawal and straightening machine 8 and a lateral-pressure withdrawal and straightening machine 9, a flame cutting machine 10 is arranged behind the direct-pressure withdrawal and straightening machine 8 and the lateral-pressure withdrawal and straightening machine 9, and a blank discharging roller way 11 is arranged below the flame cutting machine 10.
Preferably, the number of the direct-pressure withdrawal and straightening machines 8 and the number of the lateral-pressure withdrawal and straightening machines 9 are multiple, the multiple direct-pressure withdrawal and straightening machines 8 and the multiple lateral-pressure withdrawal and straightening machines 9 are alternately arranged along the advancing direction of the casting blank to form withdrawal and straightening sections, and the tail part of each withdrawal and straightening section is the direct-pressure withdrawal and straightening machine 8 and is used for pressing the casting blank when a dummy ingot is removed.
The vertical reduction and the lateral reduction of the casting blank 6 are alternately performed through the alternate reduction of the direct-pressure tension leveler 8 and the lateral-pressure tension leveler 9, so that the internal stress of the casting blank 6 is optimized, four surfaces of the casting blank 6 are all subjected to reduction, the internal quality of the casting blank 6 is improved, and the risk of generating intermediate cracks when the vertical reduction and the straightening are performed simultaneously is reduced.
As shown in fig. 3, the direct-pressure withdrawal and straightening machine 8 is composed of a direct-pressure frame 801, a lower roller 802, an upper roller 803, a screwdown 804, a direct-pressure driving device 805, and the like, and the structure and the installation arrangement of the direct-pressure withdrawal and straightening machine 8 are the same as those of a conventional direct-pressure withdrawal and straightening machine, and the details thereof are not repeated here.
The embodiment of the utility model provides an in the basic arc radius of conticaster be R10000 ~ 17000mm, casting blank section 200 x 200mm ~ 410 x 530 mm.
The utility model also provides a continuous casting method adopts foretell conticaster to go on, and the continuous casting method includes:
step 10, enabling the casting blank to sequentially pass through the movable section 5 and the fixed section 7 from the crystallizer 3 to move to the head position of the pulling and straightening section;
step 20, alternately carrying out vertical reduction and lateral reduction on the casting blank in the withdrawal and straightening section;
and step 30, the casting blank passing through the pulling and straightening section passes through a fire cutting machine 10 and a discharging roller way 11 to be discharged.
The continuous casting method can realize the alternative reduction of the square billet in the vertical direction and the lateral direction, and by adopting the technology, the uniformity in the casting blank can be improved, the quality of the casting blank can be improved, and the middle cracks of the casting blank can be reduced.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the vertical reduction and the lateral reduction of the casting blank 6 are alternately performed through the alternate reduction of the direct-pressure tension leveler 8 and the lateral-pressure tension leveler 9, so that the internal stress of the casting blank 6 is optimized, four surfaces of the casting blank 6 are all subjected to reduction, the internal quality of the casting blank 6 is improved, and the risk of generating intermediate cracks when the vertical reduction and the straightening are performed simultaneously is reduced.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and the technical scheme, all can the independent assortment use between technical scheme and the technical scheme.
Claims (9)
1. A side pressure withdrawal and straightening machine is characterized by comprising:
the guide device is provided with at least one sliding groove group, and the extending direction of each sliding groove group is perpendicular to the advancing direction of the casting blank;
at least one group of side roller sets, which are arranged in the sliding groove groups in a sliding manner, wherein the number of the side roller sets corresponds to that of the sliding groove groups, and each group of side roller sets can be abutted against the side surface of the casting blank;
and the driving assembly is in driving connection with the side roller sets and can drive the side roller sets to slide in the corresponding sliding groove groups.
2. The side pressure withdrawal straightening machine according to claim 1, characterized in that the guide device comprises an upper guide device (906) and a lower guide device (902), the upper guide device (906) and the lower guide device (902) are arranged at intervals in the vertical direction, each slide groove group comprises an upper slide groove arranged on the upper guide device (906) and a lower slide groove arranged on the lower guide device (902), and the upper slide groove corresponds to the lower slide groove.
3. The side pressure withdrawal and straightening machine as claimed in claim 2, wherein each side roller set comprises two side rollers (905) with the same structure, the two side rollers (905) are symmetrically arranged at intervals along the horizontal direction, a space for accommodating the casting blank is formed between the two side rollers (905), the upper end of each side roller (905) is connected with the corresponding upper sliding groove, and the lower end of each side roller (905) is connected with the corresponding lower sliding groove.
4. The side tension leveler of claim 3, wherein the number of the driving assemblies corresponds to the number of the side rollers (905), each driving assembly comprises a hydraulic cylinder (903) and a side tension lower frame (904), the side rollers (905) are mounted on the side tension lower frame (904), and the hydraulic cylinders (903) are in driving connection with the side tension lower frame (904).
5. The side pressure withdrawal and straightening unit as claimed in claim 3, wherein the two driving assemblies are symmetrically arranged on two sides of the casting block, each driving assembly comprises a hydraulic cylinder (903) and a side pressure lower frame (904), a plurality of side rollers (905) on the first side of the casting block are arranged on one side pressure lower frame (904), a plurality of side rollers (905) on the second side of the casting block are arranged on the other side pressure lower frame (904), and each hydraulic cylinder (903) is in driving connection with the corresponding side pressure lower frame (904).
6. The lateral pressure tension leveler of claim 4 or 5, wherein each of the hydraulic cylinders (903) is provided with a displacement sensor and a hydraulic control valve.
7. The lateral pressure withdrawal straightening machine according to claim 6, characterized in that the lateral pressure withdrawal straightening machine further comprises a frame (901) in a rectangular structure, the lower guide (902) is arranged at the lower side of the frame (901), the upper guide (906) is arranged at the upper side of the frame (901), and the hydraulic cylinder (903) is fixedly arranged at the corresponding side of the frame (901).
8. A continuous casting machine, which comprises a tundish (1), a submerged nozzle (2), a crystallizer (3), a crystallizer vibration device (4), a movable section (5), a fixed section (7), a straight-pressing withdrawal and straightening machine (8), a side-pressing withdrawal and straightening machine (9), a flame cutting machine (10) and a knockout roller way (11) which are arranged in sequence, and is characterized in that the side-pressing withdrawal and straightening machine (9) is the side-pressing withdrawal and straightening machine (9) as claimed in claim 1.
9. Continuous casting machine according to claim 8, characterized in that the number of the vertical compression straightening machines (8) and the number of the lateral compression straightening machines (9) are plural, and plural numbers of the vertical compression straightening machines (8) and plural numbers of the lateral compression straightening machines (9) are alternately arranged in the traveling direction of the cast slab and form a withdrawal section, and the tail position of the withdrawal section is the vertical compression straightening machine (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020727611.7U CN212310798U (en) | 2020-05-06 | 2020-05-06 | Side pressure withdrawal and straightening machine and continuous casting machine thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020727611.7U CN212310798U (en) | 2020-05-06 | 2020-05-06 | Side pressure withdrawal and straightening machine and continuous casting machine thereof |
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| CN212310798U true CN212310798U (en) | 2021-01-08 |
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| CN202020727611.7U Active CN212310798U (en) | 2020-05-06 | 2020-05-06 | Side pressure withdrawal and straightening machine and continuous casting machine thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375737A (en) * | 2020-05-06 | 2020-07-07 | 中冶京诚工程技术有限公司 | Side pressure withdrawal and straightening machine, continuous casting machine and continuous casting method |
| CN113399632A (en) * | 2021-06-24 | 2021-09-17 | 重庆钢铁股份有限公司 | Process for preventing billet head bending during casting or recasting of continuous casting square billet |
-
2020
- 2020-05-06 CN CN202020727611.7U patent/CN212310798U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375737A (en) * | 2020-05-06 | 2020-07-07 | 中冶京诚工程技术有限公司 | Side pressure withdrawal and straightening machine, continuous casting machine and continuous casting method |
| CN113399632A (en) * | 2021-06-24 | 2021-09-17 | 重庆钢铁股份有限公司 | Process for preventing billet head bending during casting or recasting of continuous casting square billet |
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