Rolling device under heavy continuous casting

Abstract

The application provides a roller pressing device under continuous casting heavy pressure, which comprises a pressing roller and a support, and is characterized in that the pressing roller is rotationally connected to the inner side of the support, and the two ends of the pressing roller are detachably provided with roller pressing baffle plates, and the outer side wall of the pressing roller and the roller pressing baffle plates at the two ends of the pressing roller form a roller pressing groove; the two ends of the pressing roller are fixedly provided with connecting shafts, the side wall of the connecting shaft is provided with an installation groove, and the roller pressing baffle plate is fixedly provided with an installation block corresponding to the installation groove; the inner side of the support is provided with a plurality of pressing rollers, and the roller pressing grooves of two adjacent pressing rollers form a roller pressing channel for roller pressing of a casting blank. The application has the beneficial effects that the casting blank bending error under continuous heavy pressure is eliminated, the casting blank core structure is improved, the crack is reduced, the casting blank quality is improved, the stability of continuous casting is improved, the processing accident time is reduced, and the yield is increased.

Description

Technical Field

[0001] This invention belongs to the field of continuous casting roll pressing technology, and in particular relates to a roll pressing device under heavy pressure in continuous casting. Background Technology

[0002] In the continuous casting industry, especially in the continuous casting of square and rectangular billets, the quality of the core and sharp corners of the billet directly affects the performance and machinability of the final product. Improving the quality of the core and sharp corners of the billet and enhancing the stability of continuous casting are research topics for various parties. In the existing technology, by optimizing casting process parameters, such as pouring temperature and pouring speed, the solidification process of the billet can be controlled, thereby improving the core microstructure. At the same time, by improving the design of the crystallizer and optimizing the crystallizer cooling system, efforts are made to reduce the temperature gradient at the sharp corners and slow down the solidification rate, thereby avoiding possible defects and improving the quality of the sharp corners.

[0003] However, the above-mentioned technologies only focus on the casting process in the continuous casting process. It is difficult to improve the casting process, and the existing casting process is relatively perfect and difficult to improve. The roller pressing device used in the existing technology is a multi-flat roller structure. The flat rollers are affected by continuous heavy pressure during the rolling process, resulting in a large bending error of the bar. Summary of the Invention

[0004] In view of this, the present invention aims to provide a roller pressing device under heavy continuous casting pressure, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A rolling device for continuous casting under heavy pressure includes a pressure roller and a support. The pressure roller is rotatably connected to the inner side of the support. Roller baffles are detachably provided at both ends of the pressure roller. The outer wall of the pressure roller and the roller baffles at both ends of the pressure roller form a rolling groove.

[0007] The two ends of the pressure roller are fixedly provided with connecting shafts, and the side walls of the connecting shafts are provided with mounting grooves. The roller pressure baffle is fixedly provided with mounting blocks corresponding to the mounting grooves.

[0008] The bracket has multiple pressure rollers on its inner side, and a pressure channel for rolling the casting blank is formed between the pressure grooves of two adjacent pressure rollers.

[0009] Furthermore, the roller baffle includes an outer plate and an inner plate. The outer plate has an annular groove at one end near the pressure roller, and the inner plate is located inside the annular groove. The inner plate is interference-fitted with the annular groove.

[0010] The roller baffle is a ring structure, and the axis of the roller baffle coincides with the axis of the pressure roller.

[0011] Furthermore, both the outer and inner panels are composed of semi-circular structural components spliced ​​together, and the two semi-circular structural components that make up the outer panel are connected by a connecting block located on the outer side wall of the outer panel.

[0012] A positioning block is fixed on the inner side wall of the outer plate, and positioning grooves matching the positioning block are opened at both ends of the pressure roller.

[0013] Furthermore, the inner plate has an inner chamfer on the side near the pressure roller, and the tangents at both ends of the inner chamfer coincide with the outer wall of the pressure roller and the end face of the annular groove near the pressure roller, respectively.

[0014] The inner chamfer on the inner plate serves as the chamfer between the pressure roller and the outer plate. Depending on the stress requirements of different casting blank edges, the outer and inner plates of different sizes are replaced, and the internal shape of the roller pressing groove is changed.

[0015] Furthermore, the support includes a housing and a bearing, the bearing being located inside the housing, and rotating shafts being fixed at both ends of the pressure roller, the rotating shafts being inserted into the inner side of the bearing and having an interference fit with the bearing.

[0016] Furthermore, a sealing ring is provided between the housing and the rotating shaft. The inner wall of the sealing ring is pressed against the rotating shaft, and the outer wall of the sealing ring is in contact with the housing. A roller is provided on the housing, and the roller is pressed against the outer wall of the sealing ring.

[0017] Furthermore, a cooling channel is provided inside the housing, which is adjacent to the bearing and connected to an external water channel.

[0018] Compared with the prior art, the roller pressing device under heavy pressure in continuous casting described in this invention has the following beneficial effects:

[0019] In the continuous casting process of square billets and rectangular billets, when the billet is under heavy pressure, the deformation energy of the billet in width and thickness is constrained between the roller pressure baffles at both ends and works perfectly with them, eliminating the bending error of the billet under continuous heavy pressure caused by the original flat roller structure.

[0020] Furthermore, under heavy pressure, deformation is transferred to the core of the casting, improving the core structure of the billet; and the rounded corner design of the perforated roller improves the stress at the four corners of the billet, reduces cracks, improves the quality of the billet, enhances the stability of continuous casting, reduces the time for handling accidents, and increases production. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1This is a schematic diagram of the overall structure of a roller pressing device under heavy continuous casting pressure according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the pressure roller and roller baffle as described in an embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the pressure roller and roller baffle portion described in an embodiment of the present invention;

[0025] Figure 4 This is a partial structural diagram of the pressure roller described in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the inner plate of the roller pressing baffle according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the front structure of the outer plate of the roller pressing baffle according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the back structure of the outer plate of the roller pressing baffle according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Pressure roller; 101. Connecting shaft; 102. Mounting groove; 103. Positioning groove; 104. Rotating shaft; 2. Roller baffle; 201. Mounting block; 202. Connecting block; 203. Positioning block; 204. Inner chamfer; 3. Bracket; 301. Housing; 302. Bearing; 303. Roller; 304. Cooling channel; 4. Sealing ring. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] A rolling device under continuous casting pressure includes a pressure roller 1 and a support 3. The pressure roller 1 is rotatably connected to the inner side of the support 3. Roller baffles 2 are detachably provided at both ends of the pressure roller 1. The outer wall of the pressure roller 1 and the roller baffles 2 at both ends of the pressure roller 1 form a rolling groove.

[0034] The two ends of the pressure roller 1 are fixed with connecting shafts 101, and the side wall of the connecting shaft 101 is provided with mounting grooves 102. The roller baffle 2 is fixed with mounting blocks 201 corresponding to the mounting grooves 102.

[0035] The bracket 3 has multiple pressure rollers 1 on its inner side, and a pressure channel for pressing the casting billet is formed between the pressure grooves of two adjacent pressure rollers 1.

[0036] The roller baffle 2 includes an outer plate and an inner plate. The outer plate has an annular groove at one end near the pressure roller 1. The inner plate is located inside the annular groove and is interference-fitted with the annular groove.

[0037] The roller baffle 2 is a ring structure, and the axis of the roller baffle 2 coincides with the axis of the pressure roller 1.

[0038] Both the outer and inner panels are composed of semi-circular structural components spliced ​​together. The two semi-circular structural components that make up the outer panel are connected by a connecting block 202 located on the outer side wall of the outer panel.

[0039] A positioning block 203 is fixed on the inner side wall of the outer plate, and positioning grooves 103 matching the positioning block 203 are opened at both ends of the pressure roller 1.

[0040] The inner plate has an inner chamfer 204 on the side near the pressure roller 1. The cut surfaces at both ends of the inner chamfer 204 coincide with the outer wall of the pressure roller 1 and the end face of the annular groove near the pressure roller 1, respectively.

[0041] The inner chamfer 204 on the inner plate serves as the chamfer between the pressure roller 1 and the outer plate. Depending on the stress requirements of different casting blank edges, the outer and inner plates of different sizes are replaced to change the internal shape of the roller pressing groove.

[0042] In the continuous casting process of square billets and rectangular billets, when the billet passes through the pressure roller 1 under heavy pressure, the deformation energy of the billet in width and thickness is constrained between the roller pressure baffles 2 at both ends and works perfectly with them, eliminating the bending error of the billet under continuous heavy pressure caused by the original flat roller structure.

[0043] Furthermore, under heavy pressure, deformation is transferred to the core of the casting, improving the core structure of the billet; and the rounded corner design of the perforated roller improves the stress at the four corners of the billet, reduces cracks, improves the quality of the billet, enhances the stability of continuous casting, reduces the time for handling accidents, and increases production.

[0044] The bracket 3 includes a housing 301 and a bearing 302. The bearing 302 is located inside the housing 301. Rotating shafts 104 are fixed at both ends of the pressure roller 1. The rotating shafts 104 are inserted into the inner side of the bearing 302 and are interference-fitted with the bearing 302.

[0045] A sealing ring is provided between the housing 301 and the rotating shaft 104. The inner side wall of the sealing ring is pressed against the rotating shaft 104, and the outer side wall of the sealing ring is in contact with the housing 301. A roller 303 is provided on the housing 301. The roller 303 is pressed against the outer side wall of the sealing ring to prevent foreign objects on the casting billet from entering the device.

[0046] The housing 301 has a cooling channel 304 on its inner side. The cooling channel 304 is adjacent to the bearing 302 and is connected to the external water channel to provide cooling water to the device and reduce the temperature of the device.

[0047] Those skilled in the art will recognize that the units and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0048] In the several embodiments provided in this application, it should be understood that the disclosed methods and systems can be implemented in other ways. For example, the division of units described above is merely a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The aforementioned units may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention according to actual needs.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rolling device for continuous casting under heavy pressure, comprising a pressure roller (1) and a support (3), characterized in that: The pressure roller (1) is rotatably connected to the inner side of the bracket (3). Roller baffles (2) are detachably provided at both ends of the pressure roller (1). The outer wall of the pressure roller (1) and the roller baffles (2) at both ends of the pressure roller (1) form a roller groove. The two ends of the pressure roller (1) are fixedly provided with connecting shafts (101), and the side wall of the connecting shaft (101) is provided with mounting grooves (102). The roller baffle (2) is fixedly provided with mounting blocks (201) corresponding to the mounting grooves (102). The bracket (3) has multiple pressure rollers (1) on its inner side, and a roller pressing channel for roller pressing the casting billet is formed between the roller pressing grooves of two adjacent pressure rollers (1). The roller baffle (2) includes an outer plate and an inner plate. The outer plate has an annular groove at one end near the pressure roller (1). The inner plate is located inside the annular groove and is interference-fitted with the annular groove. The roller baffle (2) is a ring structure, and the axis of the roller baffle (2) coincides with the axis of the pressure roller (1); The inner plate has an inner chamfer (204) on the side near the pressure roller (1), and the cut surfaces at both ends of the inner chamfer (204) coincide with the outer wall of the pressure roller (1) and the end face of the annular groove near the pressure roller (1), respectively. The inner chamfer (204) on the inner plate serves as the chamfer between the pressure roller (1) and the outer plate. Depending on the stress requirements of different casting blank edges, the outer plate and inner plate of different sizes are replaced to change the internal shape of the roller pressing groove. Both the outer and inner panels are composed of semi-circular structural components spliced ​​together. The two semi-circular structural components that make up the outer panel are connected by a connecting block (202) located on the outer side wall of the outer panel. A positioning block (203) is fixed on the inner side wall of the outer plate, and positioning grooves (103) matching the positioning block (203) are opened at both ends of the pressure roller (1).

2. The roller pressing device under heavy pressure in continuous casting according to claim 1, characterized in that: The bracket (3) includes a housing (301) and a bearing (302). The bearing (302) is located inside the housing (301). The pressure roller (1) has a rotating shaft (104) fixed at both ends. The rotating shaft (104) is inserted into the bearing (302) and is interference-fitted with the bearing (302).

3. The roller pressing device under heavy pressure in continuous casting according to claim 2, characterized in that: A sealing ring is provided between the housing (301) and the rotating shaft (104). The inner sidewall of the sealing ring is pressed against the rotating shaft (104), and the outer sidewall of the sealing ring is in contact with the housing (301). A roller (303) is provided on the housing (301), and the roller (303) is pressed against the outer sidewall of the sealing ring.

4. The roller pressing device under heavy pressure in continuous casting according to claim 2, characterized in that: The housing (301) is provided with a cooling channel (304) on the inner side. The cooling channel (304) is adjacent to the bearing (302) and is connected to the external water channel.

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