CN114082958B - Preparation method of nickel-copper bimetal composite strip - Google Patents
Preparation method of nickel-copper bimetal composite strip Download PDFInfo
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- CN114082958B CN114082958B CN202111394771.XA CN202111394771A CN114082958B CN 114082958 B CN114082958 B CN 114082958B CN 202111394771 A CN202111394771 A CN 202111394771A CN 114082958 B CN114082958 B CN 114082958B
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- 239000002131 composite material Substances 0.000 title claims abstract description 44
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000000843 powder Substances 0.000 claims abstract description 38
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000000137 annealing Methods 0.000 claims abstract description 14
- 238000005097 cold rolling Methods 0.000 claims abstract description 13
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 239000010406 cathode material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
- B22F2003/185—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers by hot rolling, below sintering temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a preparation method of a nickel-copper bimetal composite strip, which comprises the following steps: s1, manufacturing a powder sheath: sequentially filling pure nickel powder and pure copper powder into a sheath to form a nickel/copper/nickel three-layer powder system, vibrating the sheath, heating, vacuumizing, and sealing and welding the sheath to obtain a powder sheath; s2, powder sheath hot rolling: preheating a powder sheath, and then carrying out multi-pass hot rolling to roll into a plate with a required thickness; s3, intermediate annealing: removing the sheath on the surface of the hot rolled plate, and then reducing and annealing in a hydrogen reduction furnace; s4, cold rolling: and cold-rolling the annealed sheet into a nickel-copper bimetal composite strip with the required specification. According to the preparation method of the nickel-copper bimetal composite strip, a powder sheath hot rolling technology is adopted, so that impurity sources such as oxygen and nitrogen are isolated in a whole process, and the high purity of the nickel-copper bimetal composite strip is ensured.
Description
Technical Field
The invention belongs to the technical field of metal composite strip processing, and particularly relates to a preparation method of a nickel-copper bimetal composite strip.
Background
The development of the 5G communication and new energy automobiles and other emerging important fields is rapid, the performance requirements of the market on new energy batteries are continuously improved, and the energy conservation and environmental protection are the necessary trend of battery development. The conventional battery cathode material is provided with a nickel-plated steel belt, the cost is low, but the plating layer is thin, the side surface is unprotected, the rust is easy to occur, the internal resistance is high, and the weldability is general; the nickel-plated copper strip has small internal resistance, but the plating layer is thin, has general weldability, has extra high requirements on the welding process, and is easy to fall off otherwise; the pure nickel strap has good welding performance and strong oxidation resistance, but has larger internal resistance; the novel nickel-copper composite strip can reduce the internal resistance of a battery and prolong the service life of the battery, the nickel-copper composite strip is used as a negative electrode material, a nickel surface is a welding surface, and a copper surface is a conductive surface, so that the advantages of a nickel-plated copper strip and a nickel strip are combined, the performance of the negative electrode material is better, the high-performance nickel-copper composite strip in China mainly depends on import, and domestic substitutes are urgently needed in the market.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method of a nickel-copper bimetal composite strip so as to meet the market demand of the current long-life battery cathode material. The technical scheme adopted by the invention is as follows:
a method for preparing nickel-copper bimetal composite strips, wherein: the method comprises the following steps:
S1, manufacturing a powder sheath: sequentially filling pure nickel powder and pure copper powder into a sheath to form a nickel/copper/nickel three-layer powder system, applying vibration to the sheath to enable the tap density to reach 3.5-5.4 g/cm 3, heating, vacuumizing, and sealing and welding the sheath to obtain a powder sheath;
S2, powder sheath hot rolling: preheating a powder sheath, and then carrying out 7-9 times of hot rolling to obtain a plate with the thickness of 3.8-4 mm;
S3, intermediate annealing: removing the sheath on the surface of the hot rolled plate, and then reducing and annealing in a hydrogen reduction furnace;
S4, cold rolling: and (3) carrying out cold rolling processing on the annealed plate for 3-10 times to obtain the nickel-copper bimetal composite strip with the thickness of 0.02-0.5 mm.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: and the heating temperature in the step S1 is 300-600 ℃, the heating time is 3-24 hours, and the vacuum is pumped to 10 -4~10-6Pa.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: in the step S1, the average particle sizes of the pure nickel powder and the pure copper powder are 50-250 mu m.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: and the nickel/copper/nickel mass ratio of the nickel/copper/nickel three-layer powder system in the step S1 is 1:10:1-1:1:1.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: and the preheating temperature in the step S2 is 600-1000 ℃, and the preheating time is 20-120 min.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: and the annealing temperature in the step S3 is 400-600 ℃, and the annealing time is 10-60 min.
Preferably, the preparation method of the nickel-copper bimetal composite strip comprises the following steps: and the cold rolling line speed in the step S4 is 0.2-2 m/S.
The technical principle of the invention is as follows: the invention sequentially fills the sheath with the pure nickel powder and the pure copper powder to form a nickel/copper/nickel three-layer powder system, and the nickel-copper bimetal composite strip is formed by hot rolling and cold rolling after vacuumizing and seal welding. The invention has the technical advantages that the powder sheath rolling does not introduce gap element impurities such as oxygen, nitrogen and the like, avoids the pollution of air preheating oxidation to internal nickel and copper, and ensures the high conductivity of the material; nickel and copper belong to a face-centered cubic crystal structure, an inter-diffusion layer is formed between the nickel and the copper, and interface combination is good; because the grains in the powder particles are fine, the composite strip material has fine grain strengthening effect and excellent mechanical property.
The invention has the advantages that:
(1) According to the preparation method of the nickel-copper bimetal composite strip, a powder sheath hot rolling technology is adopted, so that impurity sources such as oxygen and nitrogen are isolated in a whole process, and the high purity of the nickel-copper bimetal composite strip is ensured.
(2) According to the preparation method of the nickel-copper bimetal composite strip, disclosed by the invention, the nickel and the copper have the same face-centered cubic crystal structure, an inter-diffusion layer is formed between the nickel and the copper, the interface bonding and the thermal matching performance between heterogeneous metals are excellent, the defects of holes and the like in the processing process are avoided, and the yield of the composite strip is improved.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Example 1
A method for preparing nickel-copper bimetal composite strips, wherein: the method comprises the following steps:
S1, sequentially filling pure nickel powder and pure copper powder with average particle sizes of 50 mu m into a 20# steel sheath according to the mass ratio of a nickel/copper/nickel three-layer powder system of 1:10:1, compacting the powder sheath to enable the compaction density to reach 3.5g/cm 3, heating to 600 ℃ in sheath manufacturing equipment for 3h, vacuumizing to 10 -6Pa, and sealing and welding the sheath to obtain the powder sheath;
S2, preheating the powder bag in an air heating furnace at 800 ℃ for 60min, and performing hot rolling for 7 times to obtain a plate with the thickness of 3.8mm, wherein the porosity is ensured to be less than or equal to 0.5%;
s3, machining and removing the 20# steel sleeve material on the surface layer of the hot rolled plate, and then performing intermediate annealing in a hydrogen reduction furnace at 600 ℃ for 10 min;
s4, carrying out 7-pass cold rolling on the annealed plate to obtain the nickel-copper bimetal composite strip with the thickness of 0.1mm, wherein the rolling line speed is 2 m/s.
Through detection, the composite strip has excellent surface welding performance, and the conductivity of the strip reaches 98.7% IACS.
Example 2
A method for preparing nickel-copper bimetal composite strips, wherein: the method comprises the following steps:
S1, sequentially filling pure nickel powder and pure copper powder with average particle sizes of 250 mu m into a 45# steel sheath according to the mass ratio of a nickel/copper/nickel three-layer powder system of 1:1:1, vibrating the powder sheath to enable the vibration density to reach 4.4 g/cm 3, heating to 300 ℃ in sheath manufacturing equipment for 24 hours, vacuumizing to 10 -4Pa, and sealing and welding the sheath to obtain the powder sheath;
S2, preheating the powder bag in an air heating furnace at the temperature of 1000 ℃ for 20min, and performing 8-pass hot rolling to obtain a plate with the thickness of 3.8mm, wherein the porosity is ensured to be less than or equal to 0.2%;
S3, after machining and removing the 45# steel sleeve material on the surface layer of the hot rolled plate, carrying out reduction annealing in a hydrogen reduction furnace at 400 ℃ for 60 min;
s4, carrying out 3-pass cold rolling on the annealed plate to process a nickel-copper bimetal composite strip with the thickness of 0.5mm, wherein the rolling line speed is 1 m/s.
Through detection, the composite strip has excellent surface welding performance, and the conductivity of the strip reaches 51.2% IACS.
Example 3
A method for preparing nickel-copper bimetal composite strips, wherein: the method comprises the following steps:
S1, sequentially filling pure nickel powder with the average particle size of 50 mu m and pure copper powder with the average particle size of 250 mu m into a 20# steel sheath according to the mass ratio of a nickel/copper/nickel three-layer powder system of 1:5:1, compacting the powder sheath until the compaction density reaches 5.0g/cm 3, heating to 500 ℃ in sheath manufacturing equipment for 16 hours, vacuumizing to 10 -5Pa, and sealing and welding the sheath to obtain the powder sheath;
S2, preheating the powder bag in an air heating furnace at the temperature of 700 ℃ for 30min, and performing hot rolling for 8 times to obtain a plate with the thickness of 4mm, wherein the porosity is ensured to be less than or equal to 0.3%;
S3, machining and removing the 20# steel sleeve material on the surface layer of the hot rolled plate, and then preserving heat for 40min at 550 ℃ in a hydrogen reduction furnace to perform intermediate annealing;
s4, performing 8-pass cold rolling on the annealed plate, and processing the annealed plate into a nickel-copper bimetal composite strip with the thickness of 0.3mm, wherein the rolling line speed is 1 m/s.
Through detection, the surface welding performance of the composite strip is excellent, and the conductivity of the strip reaches 83.6% IACS.
Example 4
A method for preparing nickel-copper bimetal composite strips, wherein: the method comprises the following steps:
S1, sequentially filling pure nickel powder with the average particle size of 100 mu m and pure copper powder with the average particle size of 50 mu m into a 45# steel sheath according to the mass ratio of a nickel/copper/nickel three-layer powder system of 1:8:1, compacting the powder sheath until the compaction density reaches 5.4 g/cm 3, heating to 400 ℃ in sheath manufacturing equipment for 20h, vacuumizing to 10 -5Pa, and sealing and welding the sheath to obtain the powder sheath;
S2, preheating the powder bag in an air heating furnace at 600 ℃ for 120min, and performing 9-pass hot rolling to obtain a plate with the thickness of 3.8mm, wherein the porosity is ensured to be less than or equal to 0.2%;
S3, machining and removing the 45# steel sleeve material on the surface layer of the hot rolled plate, and then carrying out intermediate annealing in a hydrogen reduction furnace at 500 ℃ for 30 min;
S4, performing 10-pass cold rolling on the annealed plate to obtain the nickel-copper bimetal composite strip with the thickness of 0.02mm, wherein the rolling line speed is 0.2 m/s.
Through detection, the composite strip has excellent surface welding performance, and the conductivity of the strip reaches 91.3% IACS.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (6)
1. A preparation method of a nickel-copper bimetal composite strip is characterized by comprising the following steps: the method comprises the following steps:
S1, manufacturing a powder sheath: sequentially filling pure nickel powder and pure copper powder into a sheath to form a nickel/copper/nickel three-layer powder system, applying vibration to the sheath to enable the tap density to reach 3.5-5.4 g/cm 3, heating, vacuumizing, and sealing and welding the sheath to obtain a powder sheath;
S2, powder sheath hot rolling: preheating a powder sheath, and then carrying out 7-9 times of hot rolling to obtain a plate with the thickness of 3.8-4 mm;
S3, intermediate annealing: removing the sheath on the surface of the hot rolled plate, and then reducing and annealing in a hydrogen reduction furnace;
S4, cold rolling: cold rolling the annealed plate for 3-10 times to obtain a nickel-copper bimetal composite strip with the thickness of 0.02-0.5 mm;
in the step S1, the mass ratio of nickel/copper/nickel in the nickel/copper/nickel three-layer powder system is 1:10:1-1:1:1.
2. The method for preparing the nickel-copper bimetal composite strip material according to claim 1, which is characterized in that: and in the step S1, the heating temperature is 300-600 ℃, the heating time is 3-24 hours, and the vacuum is pumped to 10 -4~10-6 Pa.
3. The method for preparing the nickel-copper bimetal composite strip material according to claim 1, which is characterized in that: the average particle size of the pure nickel powder and the pure copper powder in the step S1 is 50-250 mu m.
4. The method for preparing the nickel-copper bimetal composite strip material according to claim 1, which is characterized in that: in the step S2, the preheating temperature is 600-1000 ℃ and the preheating time is 20-120 min.
5. The method for preparing the nickel-copper bimetal composite strip material according to claim 1, which is characterized in that: in the step S3, the annealing temperature is 400-600 ℃, and the annealing time is 10-60 min.
6. The method for preparing the nickel-copper bimetal composite strip material according to claim 1, which is characterized in that: and the cold rolling line speed in the step S4 is 0.2-2 m/S.
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| CN202111394771.XA CN114082958B (en) | 2021-11-23 | 2021-11-23 | Preparation method of nickel-copper bimetal composite strip |
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| CN202111394771.XA CN114082958B (en) | 2021-11-23 | 2021-11-23 | Preparation method of nickel-copper bimetal composite strip |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670231A (en) * | 2016-12-13 | 2017-05-17 | 东北大学 | Preparation method for aluminum and nickel bimetal composite strip material |
| CN110527856A (en) * | 2019-09-20 | 2019-12-03 | 无锡市东杨新材料股份有限公司 | A kind of preparation method of great surface quality, high-intensity nickel alloy band |
| CN111074094A (en) * | 2019-12-30 | 2020-04-28 | 河南师范大学 | Preparation method of high-strength cube-texture copper-based alloy baseband |
| CN112474864A (en) * | 2020-10-28 | 2021-03-12 | 无锡市东杨新材料股份有限公司 | Short-process preparation method of high-purity nickel strip |
| CN113477712A (en) * | 2021-07-30 | 2021-10-08 | 安徽工业大学 | Preparation process of multilayer metal composite belt |
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2021
- 2021-11-23 CN CN202111394771.XA patent/CN114082958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670231A (en) * | 2016-12-13 | 2017-05-17 | 东北大学 | Preparation method for aluminum and nickel bimetal composite strip material |
| CN110527856A (en) * | 2019-09-20 | 2019-12-03 | 无锡市东杨新材料股份有限公司 | A kind of preparation method of great surface quality, high-intensity nickel alloy band |
| CN111074094A (en) * | 2019-12-30 | 2020-04-28 | 河南师范大学 | Preparation method of high-strength cube-texture copper-based alloy baseband |
| CN112474864A (en) * | 2020-10-28 | 2021-03-12 | 无锡市东杨新材料股份有限公司 | Short-process preparation method of high-purity nickel strip |
| CN113477712A (en) * | 2021-07-30 | 2021-10-08 | 安徽工业大学 | Preparation process of multilayer metal composite belt |
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