CN114921840B - Large-size cathode roller and manufacturing method thereof - Google Patents
Large-size cathode roller and manufacturing method thereof Download PDFInfo
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- CN114921840B CN114921840B CN202210528775.0A CN202210528775A CN114921840B CN 114921840 B CN114921840 B CN 114921840B CN 202210528775 A CN202210528775 A CN 202210528775A CN 114921840 B CN114921840 B CN 114921840B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
- C25D17/12—Shape or form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Electrochemistry (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrolytic Production Of Metals (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a large-size cathode roller and a manufacturing method thereof, wherein the large-size cathode roller comprises a roller body, a conductive steel core and a supporting copper ring, wherein the conductive steel core penetrates into the roller body and is connected with the roller body through the supporting copper ring, the roller body is of a regular prism structure, and the end surface of the roller body is open; the roll body comprises a roll surface and a support frame, and each roll surface is an independent module. According to the invention, the copper plate is directly connected with the titanium plate, so that the requirements of large current input and uniform conductivity can be met, the roller body support structure can be used for manufacturing the cathode roller with super-large width and large diameter, so that the size requirements of different types of lithium battery copper foils can be met, the titanium support is connected with the surface of the roller body through the titanium screw, the side surface of the roller body is of an open structure, and the maintenance and the replacement are simple.
Description
Technical Field
The invention relates to the field of titanium material processing, in particular to a large-size cathode roller and a manufacturing method thereof.
Background
The electrolytic copper foil is one of basic materials for manufacturing electronic products such as copper clad laminates, printed circuit boards, lithium ion batteries and the like, and with the high-speed development of new energy, communication and chip packaging industries, the demand on upstream electrolytic copper foil is increased year by year, and especially the requirements on the quality and the quality of the copper foil are higher and higher. The demand of the cathode roller, which is the core equipment for producing the copper foil, is greatly increased year by year, and particularly, the demand of the large-size titanium cathode roller with high electrolytic efficiency is increased year by year.
At present, the cathode roller manufacturing process mainly comprises two forming modes of spinning and welding: the spinning process titanium cylinder is processed by the process steps of sponge titanium vacuum smelting, ingot splitting, punching, hole expanding, ring rolling, spinning and the like, the process is complex, the material utilization rate is low (the rate of finished products is low), the processing cost is high, and the cost for manufacturing spinning equipment and dies for large-size diameter cylinder sleeves is too high. The welding manufacturing process has the advantages of low cost, high production efficiency, no influence of the diameter on the manufacturing of the titanium sleeve and the like. In actual production, because the welded cathode roll can meet production requirements of large current input, uniform conductivity and the like, along with the continuous emphasis on cost and efficiency, the welded cathode roll has an extremely important position in the aspect of manufacturing large-diameter titanium cathode rolls. In addition, in the use process of the two processes, the phenomena of partial reduction of the conductivity of the cathode roller, local heating of the roller surface, heating of the shaft end, mottling of the copper foil and the like occur, the quality of the copper foil is seriously influenced, and the maintenance is needed. The maintenance method comprises the following steps: firstly, the contact position of the conductive shaft of the cathode roller is ground, and the conductive quantity is enhanced. And secondly, punching holes on the end plates on the two sides, and reconnecting the copper flexible connection to enhance the electric conductivity of the end plate of the cathode roller. And thirdly, replacing the titanium cylinder again. In any mode, the maintenance and production cost is high, and the maintenance period is long.
In summary, the roller body structure of the two current manufacturing process methods is cylindrical, and the production of large-size cathode rollers is mainly limited by factors such as a spinning machine, a heat treatment process, a tool die and the like. The problems of uneven conduction, local heating and the like occur in the using process, the quality of the copper foil is influenced, and the maintenance and modification cost is high.
Aiming at the problems that the large-size cathode roller is difficult to manufacture by the existing production process method and the later maintenance cost is high, the process method for manufacturing the ultra-large-size cathode is provided, and the maintenance and manufacturing cost is reduced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a large-sized cathode roll and a manufacturing method thereof.
The technical scheme includes that the large-size cathode roller comprises a roller body, a conductive steel core and a supporting copper ring, wherein the conductive steel core penetrates into the roller body and is connected with the roller body through the supporting copper ring, the roller body is of a regular prism structure, and the end face of the roller body is open; the roller body comprises a roller surface and a support frame, and each roller surface is an independent module.
Preferably, the inside of the roller body is supported by multiple connecting copper rings, the support frame further comprises a titanium support, the titanium support is arranged in parallel along the axial direction of the conductive steel core and is connected with the multiple connecting copper rings to form the support frame with a prism structure, and the roller surface is arranged on the surface of the support frame.
Preferably, the roller surface is a copper-titanium explosive composite plate, the titanium surface of the copper-titanium explosive composite plate faces outwards to serve as a working roller surface, the copper surface faces towards the titanium support and serves as a conductive roller surface, the copper surface is welded with the connecting copper ring, and the copper surface is fastened with the titanium support through a titanium screw.
Preferably, the inner ring of the supporting copper ring is connected with the conductive steel core, and the outer ring of the supporting copper ring is connected with the connecting copper ring through a copper rivet.
Preferably, two end faces of the roller body are provided with titanium side plates, the titanium side plates are of an annular structure, and the middle of the titanium side plates is of a hollow open structure.
As a further preference, the joint of the supporting copper ring and the connecting copper ring is provided with a notch.
Preferably, the conductive steel core is of a copper-clad steel structure and comprises a steel core and a copper sleeve, and the steel core and the copper sleeve are in interference fit.
A method for manufacturing a large-size cathode roller comprises the following steps:
A. the steel core is in interference fit with the copper sleeve to form a conductive steel core;
B. processing a supporting copper ring, cutting and molding a copper plate, and milling the surface of the copper plate to ensure the flatness of the surface;
C. processing a titanium support, performing assembly welding on the orthopedic titanium strip and the multiple-connection copper ring, clamping and annealing by a tool after the assembly welding, milling an installation plane of the titanium support, drilling a threaded hole, and performing secondary annealing after the quality inspection of the flatness to eliminate processing residual stress;
D. repeatedly rolling the titanium surface of the copper-titanium explosive composite plate on a plate rolling mill, performing integral annealing after the grade of the grain size is reached, processing the copper-titanium explosive composite plate to a specified size according to the flatness and the straightness on a boring and milling machine, and performing secondary annealing to meet the requirement of the raw foil of the titanium plate;
E. the conductive steel core is in interference fit with the supporting copper ring, the supporting copper ring is connected with the connecting copper ring through a copper rivet, and the copper-titanium explosive composite plate is fastened with the mounting plane of the titanium support through a titanium screw;
F. and finally, mounting the titanium side plate.
The invention has the beneficial effects that: the copper-titanium explosion composite board is adopted, and the copper plate is directly connected with the titanium plate, so that the requirements of large-current input and uniform conductivity can be met, and the produced copper foil is more uniform in texture. The support structure of the roller body can be used for manufacturing the cathode roller with super-large width and large diameter, and the size requirements of different types of lithium battery copper foils are met. The titanium support is connected with the surface of the roller body through titanium screws, and the side face of the roller body is of an open structure, so that the maintenance and the replacement are simpler.
Drawings
Fig. 1 is an external structural view of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Description of reference numerals:
1: rolling surface; 2: a titanium side plate; 3: connecting a copper ring; 4: supporting the copper ring; 5: a notch; 6: an electrically conductive steel core; 7: a titanium stent; 8: a titanium screw; 9: copper rivets.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1 and 2, the large-size cathode roll comprises a roll body, a conductive steel core 6 and a supporting copper ring 4, wherein the conductive steel core 6 penetrates into the roll body and is connected with the roll body through the supporting copper ring 4, the roll body is of a regular prism structure, and the end surface of the roll body is open; the roll body include roll surface 1 and support frame, every piece of roll surface 1 is independent module, can make things convenient for the change in later stage.
In this embodiment, the inside of the roller body is supported by the multiple-connection copper ring 3, the support frame further comprises a titanium support 7, the titanium support 7 is arranged in parallel along the axial direction of the conductive steel core 6 and is connected with the multiple-connection copper ring 3 to form a support frame with a prism structure, and the roller surface 1 is arranged on the surface of the support frame.
In this embodiment, the roll surface 1 is a copper-titanium explosive composite plate, the titanium surface of the copper-titanium explosive composite plate faces outward to serve as a working roll surface 1, the copper surface faces a titanium support 7 to serve as a conductive roll surface 1, the copper surface is welded to the connecting copper ring 3, and the copper surface is fastened to the titanium support 7 through a titanium screw 8. By adopting the copper-titanium explosive composite board, the copper board and the titanium board are combined in a metallurgical type, no gap exists between the copper board and the titanium board, the combination is tighter, the electric conduction is more uniform, and the texture of the produced copper foil is more uniform.
In this embodiment, the inner ring of the supporting copper ring 4 is connected to the conductive steel core 6, and the outer ring is connected to the connecting copper ring 3 via a copper rivet 9.
In this embodiment, two end faces of the roller body are provided with titanium side plates 2, the titanium side plates 2 are in an annular structure, and the middle of the titanium side plates is in a hollow open structure.
In this embodiment, a gap 5 is provided at the joint of the supporting copper ring 4 and the connecting copper ring 3. The purpose of this notch is to allow air to circulate to dissipate heat as current passes through the copper plate.
In this embodiment, the conductive steel core 6 is a copper-clad steel structure, and includes a steel core and a copper sheath, where the steel core and the copper sheath are in interference fit, and can be installed by a hot-fitting method.
A method for manufacturing a large-size cathode roller comprises the following steps:
A. the steel core is in interference fit with the copper sleeve to form a conductive steel core 6;
B. processing a supporting copper ring 4, cutting and forming a copper plate, and milling the surface of the copper plate to ensure the flatness of the surface; the connecting copper ring can be directly cut and formed and can be welded in a connecting way, the purpose of connecting the copper ring is to connect and conduct, and two connecting welding seams have little influence on the conductive effect;
C. processing a titanium support 7, performing assembly welding on the reshaped titanium strip and the multiple-connection copper ring 3, clamping and annealing by a tool after the assembly welding, milling an installation plane of the titanium support 7, drilling a threaded hole, and performing secondary annealing after the quality inspection flatness to eliminate processing residual stress;
D. the copper-titanium explosive composite plate repeatedly rolls the titanium surface on a plate rolling mill, so that the copper plate and the titanium plate can be more tightly combined, and the copper-titanium explosive composite plate is integrally annealed after reaching the grain size grade; the grain size is a microscopic representation of the material, the higher the grain size is, the better the copper foil is, and the grain size grade required to be achieved can be determined according to the production requirements of actual products; processing the titanium plate to a specified size according to the flatness and the straightness by using a boring and milling machine, and then carrying out secondary annealing to meet the requirement of the titanium plate on foil generation;
E. the conductive steel core 6 is in interference fit with the supporting copper ring 4, the supporting copper ring 4 is connected with the connecting copper ring 3 through a copper rivet 9, and the copper-titanium explosive composite plate is fastened with the mounting plane of the titanium bracket 7 through a titanium screw 8;
F. and finally, installing the titanium side plate 2, wherein the titanium side plate 2 is arranged for blocking liquid, and the titanium measuring plate 2 is connected with the titanium support 7 through titanium welding.
In the description of the present invention, it should be understood that the terms "inner ring", "outer", "middle", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and the like are to be construed broadly, e.g., as meaning fixedly attached, detachably attached, or integrally formed; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A large-specification cathode roll is characterized in that: the roller comprises a roller body, a conductive steel core (6) and a supporting copper ring (4), wherein the conductive steel core (6) penetrates into the roller body and is connected with the roller body through the supporting copper ring (4), the roller body is of a regular prism structure, and the end surface of the roller body is open; the roller body comprises a roller surface (1) and a support frame, wherein each roller surface (1) is an independent module; the interior of the roller body is supported by a multiple connection copper ring (3), the support frame further comprises a titanium support (7), the titanium support (7) is arranged in parallel along the axial direction of the conductive steel core (6) and is connected with the multiple connection copper ring (3) to form a support frame with a prism structure, and the roller surface (1) is arranged on the surface of the support frame; the roller surface (1) is a copper-titanium explosive composite plate, the titanium surface of the copper-titanium explosive composite plate faces outwards to serve as a working roller surface, the copper surface faces towards the titanium support (7) to serve as a conductive roller surface, the copper surface is welded with the connecting copper ring (3), and the copper surface is fastened with the titanium support (7) through a titanium screw (8); the inner ring of the supporting copper ring (4) is connected with the conductive steel core (6), and the outer ring of the supporting copper ring is connected with the connecting copper ring (3) through a copper rivet (9); two end faces of the roller body are provided with titanium side plates (2), the titanium side plates (2) are of annular structures, and the middle of each titanium side plate is of a hollow open structure; a gap (5) is arranged at the joint of the supporting copper ring (4) and the connecting copper ring (3); the conductive steel core (6) is of a copper-clad steel structure and comprises a steel core and a copper sleeve, wherein the steel core and the copper sleeve are in interference fit.
2. The method of manufacturing a large format cathode roll of claim 1, comprising the steps of:
A. the steel core is in interference fit with the copper sleeve to form a conductive steel core (6);
B. processing a supporting copper ring (4), cutting and forming a copper plate, and milling the surface of the copper plate to ensure the flatness of the surface;
C. processing a titanium support (7), performing assembly welding on the reshaped titanium strip and the multiple connection copper ring (3), clamping and annealing by a tool after the assembly welding, milling a mounting plane of the titanium support (7), drilling a threaded hole, performing secondary annealing after the quality inspection of the flatness to eliminate processing residual stress;
D. repeatedly rolling the titanium surface of the copper-titanium explosive composite plate on a plate rolling mill, performing integral annealing after the grade of the grain size is reached, processing the copper-titanium explosive composite plate to a specified size according to the flatness and the straightness on a boring and milling machine, and performing secondary annealing to meet the requirement of the raw foil of the titanium plate;
E. the conductive steel core (6) is in interference fit with the supporting copper ring (4), the supporting copper ring (4) is connected with the connecting copper ring (3) through a copper rivet (9), and the copper-titanium explosive composite plate is fastened with the mounting plane of the titanium support (7) through a titanium screw (8);
F. and finally, installing the titanium side plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210528775.0A CN114921840B (en) | 2022-05-16 | 2022-05-16 | Large-size cathode roller and manufacturing method thereof |
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| CN202210528775.0A CN114921840B (en) | 2022-05-16 | 2022-05-16 | Large-size cathode roller and manufacturing method thereof |
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| CN114921840A CN114921840A (en) | 2022-08-19 |
| CN114921840B true CN114921840B (en) | 2023-04-11 |
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| CN116240592B (en) * | 2022-12-12 | 2024-02-20 | 西安航天动力机械有限公司 | Cathode roller for electrolytic copper foil production and manufacturing method thereof |
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| JP3207973B2 (en) * | 1993-06-10 | 2001-09-10 | ティーディーケイ株式会社 | Electroplating method and split type insoluble electrode for electroplating |
| WO2011130433A1 (en) * | 2010-04-13 | 2011-10-20 | Microvast, Inc. | Continuous prismatic cell stacking system and method |
| JP2016195239A (en) * | 2015-03-31 | 2016-11-17 | 株式会社カネカ | Surface treatment device, method of manufacturing board with conductive layer, method of manufacturing solar cell, and method of manufacturing organic el device |
| KR102402804B1 (en) * | 2015-12-11 | 2022-05-27 | 히타치 긴조쿠 가부시키가이샤 | Electrode device and method for manufacturing metal foil using same |
| CN206127452U (en) * | 2016-10-28 | 2017-04-26 | 灵宝华鑫铜箔有限责任公司 | Electrolytic copper foil is with negative pole roller that prevents ablation |
| CN107937940A (en) * | 2017-12-12 | 2018-04-20 | 西安泰金工业电化学技术有限公司 | A kind of cathode roll internal conductive structures |
| CN114369851B (en) * | 2021-12-13 | 2022-10-18 | 西安泰金工业电化学技术有限公司 | Large-width wide cathode roller for producing high-strength ultrathin copper foil |
| CN114411207B (en) * | 2021-12-27 | 2022-08-12 | 西安泰金工业电化学技术有限公司 | Cathode roller convenient to replace and low in cost |
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