An electric field assisted rolling device and an electrically conductive apparatus

Abstract

This invention discloses an electric field-assisted rolling apparatus and a conductive device, relating to the field of current-assisted rolling. The electric field-assisted rolling apparatus is used for rolling n-type metal strip. The apparatus includes: a conductive device and a work roll arranged sequentially along the rolling direction of the n-type metal strip. The n-type metal strip includes: a first strip region and a second strip region that are parallel to each other. The conductive device includes: a first energizing module and a second energizing module, wherein the first energizing module is connected to the positive terminal of a power supply, and the second energizing module is connected to the negative terminal of a power supply. During the rolling process, the first energizing module and the second energizing module respectively contact the first strip region and the second strip region to apply a current flowing from the first strip region to the second strip region to the n-type metal strip. The work roll is used to roll the n-type metal strip after the applied current. This electric field-assisted rolling apparatus is beneficial for improving the forming performance and microstructure uniformity of the strip.

Description

Technical Field

[0001] This invention relates to the field of current-assisted rolling, and more particularly to an electric field-assisted rolling apparatus and a conductive device. Background Technology

[0002] As China's high-end manufacturing technology accelerates towards intelligence and precision, the quality requirements for metal strips in many cutting-edge fields have risen to a whole new level. For example, in the field of computer chip manufacturing, in order to ensure high-precision etching and packaging at the nanometer level and to ensure the stability and consistency of chip performance, high-purity metal strips with atomic-level surface roughness and submicron-level thickness tolerance are required.

[0003] Traditional methods of producing sheet metal result in problems such as poor formability at room temperature, high residual stress, uneven microstructure, and susceptibility to edge cracking, severely hindering the development of high-tech manufacturing. Existing research indicates that energy field-assisted rolling, particularly electric field-assisted rolling, can, to some extent, solve the problems of sheet metal formability and microstructure uniformity.

[0004] For example, integrating a pulsed electric field into the rolling process of carbon steel strip can improve its plastic deformation performance while reducing the deformation resistance of the carbon steel strip. The pulsed current also makes the grains continuously refined and their distribution more uniform.

[0005] There are currently two common methods for applying an electric field during the rolling process. Please refer to [link / reference]. Figure 1 and Figure 2 , Figure 1 A schematic diagram of the method of applying an electric field in strip rolling provided by the prior art of this application. Figure 1 ; Figure 2 A schematic diagram of the method of applying an electric field in strip rolling provided by the prior art of this application. Figure 2 .

[0006] like Figure 1 As shown, the upper and lower working rolls are connected to the two ends of the power supply respectively. During the strip rolling process, when the strip moves to the roll gap, the working rolls contact the strip, realizing the circuit closure, so that the strip obtains a current in the rolling deformation zone that is parallel to the line connecting the centers of the upper and lower working rolls.

[0007] However, this method only applies current to the strip in the rolling deformation zone, resulting in a small energized area and short energization time. For metals that are difficult to deform, the effect of this electric field assistance is poor. Furthermore, in practical applications, the energization structure is complex, requiring modification of the entire rolling mill.

[0008] Furthermore, such as Figure 2As shown, the power supply is applied to the strip on both sides of the inlet and outlet of the rolling mill, forming a closed loop. However, in actual application, it is necessary to lift the work roll, wait for the roll gap to open, pass the strip through the roll gap, and then adjust the work roll to press down to the target position.

[0009] However, during the pressing process of the work roll, the strip is only subjected to the pressure of the work roll. The large deformation resistance of difficult-to-deform metals places high requirements on the rolling mill pressing system and can easily damage the pressing system.

[0010] Therefore, how to solve the problems of small energized area and short energization time in the existing technology, improve the forming performance and microstructure uniformity of metal strips rolled by electric field-assisted devices, and avoid the high requirements of the rolling mill reduction system on the large resistance of difficult-to-deform metals has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0011] In view of the above-mentioned technical status, the present invention provides an electric field-assisted rolling device and a conductive device to solve the problems of small energized area and short time of strip during rolling, improve the forming performance and microstructure uniformity of metal strip rolled by the electric field-assisted device, and avoid damage to the pressing system caused by the downward pressing of the work roll.

[0012] To achieve the above objectives, the present invention provides the following technical solution:

[0013] An electric field-assisted rolling apparatus is disclosed for rolling n-type metal strip. The apparatus comprises: a conductive device and a work roll arranged sequentially along the rolling direction of the n-type metal strip; the n-type metal strip includes: a first strip region and a second strip region that are parallel to each other; the conductive device includes: a first energizing module and a second energizing module, wherein the first energizing module is connected to the positive terminal of a power supply, and the second energizing module is connected to the negative terminal of a power supply; during the rolling process, the first energizing module and the second energizing module respectively contact the first strip region and the second strip region to apply a current flowing from the first strip region to the second strip region to the n-type metal strip; the work roll is used to roll the n-type metal strip after the applied current is applied.

[0014] In one optional embodiment of this application, the n-type metal strip further includes: a closed strip region located at the ends of the first strip region and the second strip region; in the initial stage of rolling, the closed strip region is located on the side close to the conductive device.

[0015] In one optional embodiment of this application, the first energizing module includes: a first lower energizing block and a first upper energizing block; the second energizing module includes: a second lower energizing block and a second upper energizing block; during the rolling process, the first lower energizing block and the first upper energizing block respectively contact the lower surface and the upper surface of the first strip area; the second lower energizing block and the second upper energizing block respectively contact the lower surface and the upper surface of the second strip area.

[0016] In one optional embodiment of this application, the conductive device further includes: an upper base, a lower base, a first linkage mechanism, and a second linkage mechanism; the upper base is provided with the first linkage mechanism and the second linkage mechanism mounted side by side facing the n-shaped metal strip, and the ends of the first linkage mechanism and the second linkage mechanism are respectively provided with the first upper energizing block and the second upper energizing block; the lower base is provided with the first lower energizing block and the second lower energizing block mounted side by side facing the n-shaped metal strip.

[0017] In one optional embodiment of this application, the first lower energizing block, the first upper energizing block, the second lower energizing block, and the second upper energizing block are composed of a support layer, an insulating layer, and a conductive layer connected in sequence; wherein the conductive layer is in contact with the n-type metal strip.

[0018] In one alternative embodiment of this application, the surface of the work roller is covered with a ceramic coating.

[0019] Compared with the prior art, the electric field-assisted rolling device provided by the present invention, by sequentially designing conductive devices and work rolls along the rolling direction to roll n-type metal strips, enables the first and second energizing modules of the conductive devices to always contact the first and second strip areas of the n-type metal strip, forming a current flowing from the first strip area to the second strip area. This ensures that the n-type metal strip always has current in the rolling process, realizing online annealing of the n-type metal strip, which is beneficial to improving the strip forming performance and microstructure uniformity.

[0020] Furthermore, the circuit structure of this electric field-assisted rolling device is simple. It only requires adding conductive devices, including a first energizing module and a second energizing module, to the existing rolling mill to ensure that the n-type metal strip always has current during rolling. This eliminates the need for large-scale modifications to the rolling mill itself, which helps save rolling costs and improves rolling mill efficiency. In addition, the electric field-assisted rolling device can avoid the problem of the work roll being unable to press down during the pressing process and causing damage to the pressing system if the metal strip is passed through the roll gap in advance.

[0021] This application also provides a conductive device applied to the above-mentioned electric field-assisted rolling apparatus for energizing the n-type metal strip before the work roll rolls roll the n-type metal strip. The device includes a first energizing module and a second energizing module, wherein the first energizing module is connected to the positive terminal of a power supply, and the second energizing module is connected to the negative terminal of a power supply. The n-type metal strip includes a first strip region and a second strip region that are parallel to each other. During the rolling process, the first energizing module and the second energizing module respectively contact the first strip region and the second strip region to apply a current flowing from the first strip region to the second strip region to the n-type metal strip through the first energizing module and the second energizing module.

[0022] Compared with the prior art, the beneficial effects of the conductive device provided by the present invention are the same as those of the electric field-assisted rolling device described in the above technical solution, and will not be repeated here. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0024] Figure 1 A schematic diagram of the method of applying an electric field in strip rolling provided by the prior art of this application. Figure 1 .

[0025] Figure 2 A schematic diagram of the method of applying an electric field in strip rolling provided by the prior art of this application. Figure 2 .

[0026] Figure 3 This is a structural diagram of an electric field-assisted rolling apparatus provided in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of a metal strip structure provided in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the conductive device structure provided in an embodiment of this application.

[0029] Figure 6 A schematic diagram of a linkage mechanism provided in an embodiment of this application.

[0030] Figure 7 This is a schematic diagram of the upper energized block structure provided in an embodiment of this application.

[0031] Figure 8 This is a schematic diagram of the lower energized block structure provided in an embodiment of this application.

[0032] Figure label:

[0033] Rolling mill body-101, power supply-102, n-type metal strip-103, conductive equipment-104, work roll-105, first strip area-201, second strip area-202, closed strip area-203, first energizing module-301, first lower energizing block-3011, first upper energizing block-3012, second energizing module-302, second lower energizing block-3021, second upper energizing block-3022, upper base-303, lower base-304, first linkage mechanism-305, second linkage mechanism-306, fixed rod-401, first angle adjustment rod-402, second angle adjustment rod-403, first follower rod-404, second follower rod-405, mounting rod-406, spring-407, support layer-501, insulation layer-502, conductive layer-503. Detailed Implementation

[0034] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] To address the shortcomings of existing technologies and improve the forming performance and microstructure uniformity of strips, this application provides an electric field-assisted rolling apparatus and a conductive device, which will be described in detail in the following embodiments.

[0040] This application first provides an electric field-assisted rolling apparatus, please refer to... Figure 3 , Figure 3 This is a structural diagram of an electric field-assisted rolling apparatus provided in an embodiment of this application.

[0041] like Figure 3 As shown, the electric field-assisted rolling device includes: a rolling mill body 101, a power supply 102, a conductive device 104 and a work roll 105 arranged sequentially along the rolling direction of the n-shaped metal strip 103.

[0042] The purpose of the electric field-assisted rolling apparatus provided in this application is to keep the n-type metal strip constantly energized before and during the rolling process.

[0043] The following combination Figure 4 and Figure 5 This paper provides a detailed introduction to n-type metal sheets and strips and conductive equipment, including... Figure 4 This is a schematic diagram of a metal strip structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of the conductive device structure provided in an embodiment of this application.

[0044] The metal strip includes: a first strip region 201 and a second strip region 202 that are parallel to each other.

[0045] The conductive device includes a first power-conducting module 301 and a second power-conducting module 302, wherein the first power-conducting module 301 is connected to the positive terminal of the power supply and the second power-conducting module 302 is connected to the negative terminal of the power supply.

[0046] The first power-on module 301 is in contact with the first strip area 201, and the second power-on module 302 is in contact with the second strip area 202. Thus, through the two power-on modules, current flowing from the first strip area 201 to the second strip area 202 is applied to the n-type metal strip.

[0047] During the rolling process, after the first energizing module 301 and the second energizing module 302 apply current to the n-type metal strip, the n-type metal strip first passes through the conductive device along the rolling direction. The conductive device applies current to the entire rolling process of the n-type metal strip. After that, the current-energized n-type metal strip passes through the roll gap between the work rolls to complete the rolling.

[0048] In one alternative embodiment of this application, the n-type metal strip further includes a closed strip region 203 located at the ends of the first strip region 201 and the second strip region 202, so as to connect the first strip region 201 and the second strip region 202.

[0049] In this embodiment, the n-type metal plate can be obtained by welding two metal plates, wherein the two metal plates serve as the first strip area 201 and the second strip area 202, respectively, and the welded part serves as the closed strip area 203; or it can be obtained by cutting grooves in a metal strip.

[0050] In practical applications, the material of n-type metal strips can be any one of carbon steel, aluminum and aluminum alloys, magnesium and magnesium alloys, tantalum and tantalum alloys, copper and copper alloys, and titanium and titanium alloys.

[0051] In the rolling process, in order to ensure that the rolling of the first strip area 201 and the second strip area 202 of the n-type metal strip is synchronized, and at the same time to facilitate the rolling of the n-type metal strip by the work roll, the closed strip area 203 is located on the side close to the conductive equipment, so that the closed strip area 203 can enter the roll gap of the work roll first after passing through the conductive equipment.

[0052] For further details, please refer to... Figure 5 The first power-on module 301 includes a first lower power-on block 3011 and a first upper power-on block 3012; the second power-on module 302 includes a second lower power-on block 3021 and a second upper power-on block 3022.

[0053] During the rolling process, the first lower energized block 3011 and the first upper energized block 3012 contact the lower and upper surfaces of the first strip region 201, respectively; the second lower energized block 3021 and the second upper energized block 3022 contact the lower and upper surfaces of the second strip region 202, respectively.

[0054] In practical applications, to ensure that the conductive device can continuously energize the n-type metal strip, it is necessary to fix the conductive device on the rolling mill. Therefore, in one optional embodiment of this application, the conductive device further includes: an upper base 303, a lower base 304, a first linkage mechanism 305, and a second linkage mechanism 306.

[0055] The first linkage mechanism 305 and the second linkage mechanism 306 are mounted side by side on the upper base 303 facing the n-shaped metal strip. The ends of the first linkage mechanism 305 and the second linkage mechanism 306 are respectively equipped with the first upper energizing block 3012 and the second upper energizing block 3022.

[0056] The upper base 303 and lower base 304 are respectively fixed on the upper and lower vertical sides of the n-type metal strip rolling direction. The upper base 303 and lower base 304 are fixed to the mill stand, with the upper base 303 installed above the roll gap of the work rolls and the lower base 304 installed below the roll gap. In practical applications, the upper base 303 and lower base 304 can be installed by screws or welding; this application does not impose any restrictions on this.

[0057] The first linkage mechanism 305 and the second linkage mechanism 306 have the same structure and are used to adjust the distance between the upper and lower energizing blocks according to the thickness of the n-type metal strip, so that the upper and lower energizing blocks can contact the n-type metal strip.

[0058] Therefore, the conductive module provided in this application can be installed on a rolling mill, enabling the n-type metal strip to maintain current throughout the rolling process, compared to existing technologies (such as...). Figure 1 The method of energizing the strip in the rolling deformation zone by modifying the work rolls in this application does not require modification of the rolling mill itself, which is beneficial to saving rolling costs.

[0059] For further details, please refer to... Figure 6 , Figure 6 A schematic diagram of a linkage mechanism provided in an embodiment of this application.

[0060] like Figure 6 As shown, the first linkage mechanism 305 and the second linkage mechanism 306 include: a fixed rod 401, a first angle adjusting rod 402, a second angle adjusting rod 403, a first follower rod 404, a second follower rod 405, a mounting rod 406, and a spring 407.

[0061] In practical applications, the fixing rods 401 of the first linkage mechanism 305 and the second linkage mechanism 306 are fixed on the upper base 303. The end of the mounting rod 406 is used to install the energized block. In the hinge system formed by the linkage mechanism, the mounting rod 406 only moves up and down in the vertical plane to adjust the position of the energized block.

[0062] The spring is in a contracted state so that during the rolling process, the spring releases a rebound force toward the n-shaped metal strip, ensuring that the energized block is always in contact with the n-shaped metal strip.

[0063] For further details, please refer to... Figure 7 and Figure 8, Figure 7 This is a schematic diagram of the upper energized block structure provided in an embodiment of this application; Figure 8 This is a schematic diagram of the lower energized block structure provided in an embodiment of this application.

[0064] like Figure 7 As shown, Figure 7 Specifically, it is either the first upper energizing block 3012 or the second upper energizing block 3022 (both have the same structure), which consists of a support layer 501, an insulating layer 502 and a conductive layer 503 connected in sequence.

[0065] Figure 8 and Figure 7 similar, Figure 8 Specifically, it is either the first lower energizing block 3011 or the second lower energizing block 3021 (both have the same structure), which consists of a support layer 501, an insulating layer 502 and a conductive layer 503 connected in sequence.

[0066] In addition, whether Figure 7 The upper power block shown is still Figure 8 The lower energized block shown in the figure has conductive layer 503 in contact with the n-type metal strip.

[0067] The insulating layer can be any one of silicon nitride ceramic coating, PPO polyphenylene ether engineering plastic, aluminum nitride coating, or alumina ceramic layer; the conductive layer can be any one of copper, copper alloy, graphite, copper-graphite composite material, or tungsten-copper cermet.

[0068] Furthermore, the surface of the work roll is covered with a ceramic coating.

[0069] The insulating layer 502 and the ceramic coating covering the surface of the work roll are used to separate the n-type metal strip from the mill body during the energization process, thereby ensuring the correct direction of the current.

[0070] In practical applications, during the rolling process of n-type metal strip, current is applied to the n-type metal strip through the first and second energizing modules, so that the n-type metal strip is fed into the gap of the work rolls after being energized for rolling deformation. Moreover, the part of the n-type metal strip after rolling deformation still has current, thereby realizing the online electric annealing of the n-type metal strip.

[0071] Understandably, the rolled n-type metal strip is not the final product used in industry, but rather an intermediate process. In the electric field-assisted rolling process, the n-type strip is designed primarily to achieve continuous current application and online electric annealing, thereby improving the strip's formability and microstructure uniformity. After rolling, the head and tail of the n-type metal strip need to be removed, resulting in two independent metal strips for application in relevant industrial scenarios. For example, the computer chip manufacturing industry requires high-purity metal strips with atomic-level surface roughness and submicron-level thickness tolerances.

[0072] It should be noted that regardless of the rolling process used, the rolling force is not stable at the head and tail of the metal strip. Therefore, after the metal strip is rolled, head and tail removal operations are required. Since the closed strip region 203 of the n-type metal strip provided in this embodiment is located at the ends of the first and second metal strips, performing head and tail removal operations to obtain two identical metal strips does not increase the complexity of the process due to the removal operations.

[0073] Furthermore, in practical applications, according to the rolling principle, during the rolling and stretching deformation of the strip, the stretching deformation is mainly along the rolling direction, limited by the friction of the work rolls and the three-phase force state at the edges, with a relatively small lateral width expansion. Therefore, to avoid short circuits caused by the lateral expansion of the strip, it is only necessary to set the spacing between the first and second strips according to the width expansion characteristics of the strip material.

[0074] For example, for materials with strong scalability (such as aluminum-magnesium alloys), the spacing needs to be designed to be larger, while for materials with weak scalability (such as titanium alloys), the spacing can be set to be smaller.

[0075] Furthermore, in the case where n-type metal strip is obtained by welding two identical strips, in actual industrial production, rolling mills have various specifications and roll widths. A standard rolling mill of the appropriate specification can be selected based on the total width of the n-type metal strip (the width of the first strip area, the width of the second strip area, and the sum of the distance between the first and second strip areas), and the conductive equipment can be installed. There is no need to specially design a rolling mill for n-type metal strip.

[0076] For example, for an AZ31B magnesium-aluminum alloy strip with initial dimensions of 10m in length, 1000mm in width, and 10mm in thickness, under a preset reduction of 50% (5mm thickness after rolling), its maximum width expansion is approximately 25mm. Therefore, the strip spacing can be designed to be 100mm. This spacing is sufficient to accommodate the width expansion of two metal strips, with ample margin. For the aforementioned n-type magnesium-aluminum alloy strip, with a single strip width of 1000mm and a spacing of 100mm, the total width is 2100mm. In industrial production, a standard four-high reversible rolling mill with a roll thickness of 2500mm can be used.

[0077] For example, for a 6061 aluminum alloy strip with initial dimensions of 6m in length, 600mm in width, and 80mm in thickness, under a preset reduction of 20% (resulting in a rolled thickness of 6.4mm), its maximum width expansion is approximately 7.2mm. Therefore, the strip spacing can be designed to be 40mm, resulting in a total width of 1240mm for the 6061 aluminum alloy n-type strip. In industrial production, a standard two-high reversible rolling mill with a roll face width of 1600mm can be selected.

[0078] In addition, during the testing process, the electric field-assisted rolling device provided in this application was used to roll tantalum alloy n-type metal strips with a reduction rate of 80% as the experimental group, while the electric field-assisted rolling device provided in the prior art was used to roll conventional metal strips with a reduction rate of 80% as the control group. The final inverse pole figure of the experimental group showed that the grain uniformity of the inverse pole figure of the control group was significantly better than that of the inverse pole figure of the control group.

[0079] Therefore, it can be seen that the forming performance and microstructure uniformity of the rolled metal strip produced by the electric field-assisted rolling device provided in this application embodiment are superior to those of the electric field-assisted rolling device in the prior art. That is, by increasing the size of the energized area of ​​the metal strip and extending the energizing time through the electric field-assisted rolling device provided in this application, the forming performance and microstructure uniformity of the metal strip can be further improved.

[0080] In summary, the electric field-assisted rolling apparatus provided in this application, by sequentially designing conductive devices and work rolls along the rolling direction to roll n-type metal strips, enables the first and second energizing modules of the conductive devices to always contact the first and second strip areas of the n-type metal strip, forming a current flowing from the first strip area to the second strip area. This ensures that the n-type metal strip always has current during the rolling process, realizing online annealing of the n-type metal strip, which is beneficial for improving the strip's forming performance and microstructure uniformity.

[0081] Furthermore, the circuit structure of this electric field-assisted rolling device is simple. It only requires adding conductive devices, including a first energizing module and a second energizing module, to the existing rolling mill to ensure that the n-type metal strip always has current during rolling. This eliminates the need for large-scale modifications to the rolling mill itself, which helps save rolling costs and improves rolling mill efficiency. In addition, the electric field-assisted rolling device can avoid the problem of the work roll being unable to press down during the pressing process and causing damage to the pressing system if the metal strip is passed through the roll gap in advance.

[0082] This application also provides a conductive device for energizing the n-type metal strip before rolling it with work rolls. The device includes a first energizing module and a second energizing module, wherein the first energizing module is connected to the positive terminal of a power supply, and the second energizing module is connected to the negative terminal of a power supply. The n-type metal strip includes a first strip region and a second strip region that are parallel to each other. During the rolling process, the first energizing module and the second energizing module respectively contact the first strip region and the second strip region to apply current flowing from the first strip region to the second strip region to the n-type metal strip.

[0083] The conductive device provided in this embodiment and the electric field-assisted rolling device provided in the embodiment of this application belong to the same application concept. For technical details not described in detail in this embodiment, please refer to the specific content of the electric field-assisted rolling device provided in the above embodiment of this application, which will not be repeated here.

[0084] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. An electric field-assisted rolling apparatus, characterized in that, Used for rolling n-type metal sheets and strips; The electric field-assisted rolling device includes: a conductive device and a work roll arranged sequentially along the rolling direction of the n-type metal strip; the conductive device is fixed on the rolling mill. The n-type metal strip includes: a first strip area and a second strip area that are parallel to each other; The conductive device includes: a first power-on module and a second power-on module, wherein the first power-on module is connected to the positive terminal of the power supply, and the second power-on module is connected to the negative terminal of the power supply; During the rolling process, the first energizing module and the second energizing module respectively contact the first strip area and the second strip area to apply current flowing from the first strip area to the second strip area to the n-type metal strip through the first energizing module and the second energizing module; The work roll is used to roll an n-type metal plate after the current is applied. The n-type metal strip further includes: a closed strip region located at the ends of the first strip region and the second strip region; in the initial stage of rolling, the closed strip region is located on the side close to the conductive device; The first power-on module includes: a first lower power-on block and a first upper power-on block; the second power-on module includes: a second lower power-on block and a second upper power-on block; During the rolling process, the first lower energized block and the first upper energized block are in contact with the lower and upper surfaces of the first strip area, respectively; the second lower energized block and the second upper energized block are in contact with the lower and upper surfaces of the second strip area, respectively; after the n-type metal strip is rolled and deformed, current still exists in the part, realizing the online electric annealing of the n-type metal strip; The conductive device further includes: an upper base, a lower base, a first linkage mechanism, and a second linkage mechanism; The first linkage mechanism and the second linkage mechanism are mounted side by side on the upper base facing the n-shaped metal strip, and the first upper energizing block and the second upper energizing block are respectively mounted on the ends of the first linkage mechanism and the second linkage mechanism. The first lower energizing block and the second lower energizing block are mounted side-by-side on the lower base facing the n-shaped metal strip.

2. The electric field-assisted rolling apparatus according to claim 1, characterized in that, The first lower energizing block, the first upper energizing block, the second lower energizing block, and the second upper energizing block are each composed of a support layer, an insulating layer, and a conductive layer connected in sequence; wherein the conductive layer is in contact with the n-type metal strip.

3. The electric field-assisted rolling apparatus according to claim 1, characterized in that, The surface of the work roll is covered with a ceramic coating.

4. A conductive device, characterized in that, An electric field-assisted rolling apparatus according to any one of claims 1 to 3, used to energize the n-type metal strip before the work rolls roll the n-type metal strip, comprising: A first power-on module and a second power-on module, wherein the first power-on module is connected to the positive terminal of the power supply, and the second power-on module is connected to the negative terminal of the power supply; The n-type metal strip includes: a first strip area and a second strip area that are parallel to each other; During the rolling process, the first energizing module and the second energizing module contact the first strip area and the second strip area respectively, so as to apply current flowing from the first strip area to the second strip area to the n-type metal strip through the first energizing module and the second energizing module.

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