CN116875848A - Nickel-plated Al-Fe-B alloy conductor material and preparation method thereof - Google Patents
Nickel-plated Al-Fe-B alloy conductor material and preparation method thereof Download PDFInfo
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- CN116875848A CN116875848A CN202310051024.9A CN202310051024A CN116875848A CN 116875848 A CN116875848 A CN 116875848A CN 202310051024 A CN202310051024 A CN 202310051024A CN 116875848 A CN116875848 A CN 116875848A
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- 239000004020 conductor Substances 0.000 title claims abstract description 41
- 229910000521 B alloy Inorganic materials 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 263
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 177
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 130
- 238000007747 plating Methods 0.000 claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000005406 washing Methods 0.000 claims abstract description 90
- 239000011701 zinc Substances 0.000 claims abstract description 42
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 39
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 238000003723 Smelting Methods 0.000 claims abstract description 24
- 239000003513 alkali Substances 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000005530 etching Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 14
- 238000005238 degreasing Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 238000002791 soaking Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 92
- 238000009713 electroplating Methods 0.000 claims description 30
- 241000080590 Niso Species 0.000 claims description 16
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 claims description 16
- 238000007598 dipping method Methods 0.000 claims description 16
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims description 14
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 14
- 229940074439 potassium sodium tartrate Drugs 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 8
- 229960000956 coumarin Drugs 0.000 claims description 8
- 235000001671 coumarin Nutrition 0.000 claims description 8
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 claims description 8
- 229940081974 saccharin Drugs 0.000 claims description 8
- 235000019204 saccharin Nutrition 0.000 claims description 8
- 239000000901 saccharin and its Na,K and Ca salt Substances 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 20
- 230000007797 corrosion Effects 0.000 abstract description 19
- 238000005260 corrosion Methods 0.000 abstract description 19
- 229910052802 copper Inorganic materials 0.000 abstract description 16
- 239000010949 copper Substances 0.000 abstract description 16
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 abstract description 10
- 230000007704 transition Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract 2
- 238000009413 insulation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 53
- 238000004519 manufacturing process Methods 0.000 description 26
- 239000000203 mixture Substances 0.000 description 21
- 229910052782 aluminium Inorganic materials 0.000 description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 17
- 229910045601 alloy Inorganic materials 0.000 description 13
- 229910000640 Fe alloy Inorganic materials 0.000 description 10
- DJPURDPSZFLWGC-UHFFFAOYSA-N alumanylidyneborane Chemical compound [Al]#B DJPURDPSZFLWGC-UHFFFAOYSA-N 0.000 description 10
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 10
- 238000011161 development Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005470 impregnation Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000001476 sodium potassium tartrate Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a nickel plating Al-Fe-B alloy conductor material and a preparation method thereof, comprising an aluminum alloy and a nickel plating layer plated on the surface of the aluminum alloy, wherein the aluminum alloy comprises the following components in percentage by weight: fe:0.01 to 1.1 percent; b:0.001 to 0.4 percent; the balance of Al and impurities; the aluminum alloy rod is obtained by smelting, casting and rolling the aluminum alloy material, and then is drawn into an aluminum alloy wire, and the aluminum alloy wire blank surface is subjected to chemical degreasing, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating. And then the nickel-plated aluminum alloy wire blank is subjected to wire bundling, extrusion insulation, cabling, extrusion sheath or armor to prepare the nickel-plated aluminum alloy wire. The nickel-plated aluminum alloy conductor material greatly improves the hardness, wear resistance, toughness and corrosion resistance of the existing aluminum alloy material, particularly, a copper-aluminum transition terminal is not needed, the nickel-plated aluminum alloy conductor material can be directly connected with the existing copper terminal for installation, and the safety and the reliability of connection are greatly improved.
Description
Technical Field
The invention relates to the technical field of aluminum alloy, in particular to a nickel-plated Al-Fe-B alloy conductor material and a preparation method thereof.
Background
With the development of the technology of the aluminum alloy cable in China for more than ten years, the development of the manufacturing process, the product performance, the detection, the installation and construction and the like of the aluminum alloy cable are mature, the matched product standard and the design standard are complete gradually, and powerful guarantee is provided for the rapid development of the aluminum alloy cable in China.
Despite the rapid development of aluminum alloy cables, the vast majority of cables in the market today still use copper cores as conductor materials. However, with the increasing shortage of copper resources, the global copper price is in heavy fluctuation, and brings great operational risk to user enterprises and cable manufacturing enterprises, because the China copper cable manufacturing enterprises are almost tens of thousands of families, the competition is extremely intense, the low price competition becomes normal, and the copper price is greatly fluctuated, and great production risk is brought to the copper cable enterprises, so that the product quality is difficult to guarantee, and the conductor demand for replacing other copper core conductor materials is increasingly large. The aluminum in the metal material has good conductive effect, light weight and low price; meanwhile, in recent years, environmental awareness has been strengthened, and weight saving has been strongly demanded to improve the utilization rate of mechanical fuel. Therefore, it has been necessarily trended to replace copper cables with aluminum core cables.
The aluminum alloy cable has mature application technology in the field of 600V-35kV, and because of the active chemical property of aluminum, an oxide film with the thickness of about 0.005-0.015 mu m can be formed in the atmosphere, and the film is porous, nonuniform, discontinuous and too thin to play a role in protection, especially for places with higher saline-alkali content in coastal areas and serious corrosion of chemical plant compounds and acid and alkali, the corrosion resistance of the existing aluminum alloy cable can not meet the industrial use requirements.
And the matched installation aspect is also basically mature, as the copper price is expanded to cause the demand on the aluminum alloy cable to be larger and larger, the technology of the aluminum alloy cable is developed to the deeper field, the demand of photovoltaic power generation, wind power generation and new energy automobiles on electric wires and cables is greatly increased along with the strong development of the new energy in China nowadays, the existing aluminum alloy cable technology cannot adapt to the demands of the development of a plurality of fields such as the new energy, and the like, in particular, the aluminum alloy conductor material cannot meet the installation connection requirements in the more fields, the existing connection installation technology is designed for copper materials, the aluminum alloy material cannot be directly connected with the existing copper connection terminals, and the existing copper-aluminum transition terminal technology can solve the problem of partial copper-aluminum transition connection, but cannot adopt the copper-aluminum transition terminals for a plurality of application occasions. The modification of the connection scheme is not only a system engineering, but also the unreasonable design can affect the safety and reliability, so that the development of the conductor technology taking the aluminum alloy as the base material is suitable for the existing mature connection scheme, and is a major subject faced by the development of the aluminum alloy wire and cable, and if the problem is solved, the development of the aluminum alloy conductor material is a major historical breakthrough.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the nickel-plated Al-Fe-B alloy conductor material and the preparation method thereof, which greatly improve the hardness, the wear resistance and the toughness of the existing aluminum alloy conductor material, particularly the corrosion resistance, can be directly connected and installed with the existing terminal without a copper-aluminum transition terminal, and greatly improve the safety and the reliability of connection.
In order to achieve the above object, the present invention is realized by the following technical scheme: the nickel-plated Al-Fe-B alloy comprises an aluminum alloy and a nickel-plated layer which is plated on the surface of the aluminum alloy and is larger than or equal to 100nm, wherein the aluminum alloy comprises the following components in percentage by weight: fe:0.01 to 1.1 percent; b:0.001 to 0.4 percent; the balance of Al and impurities; the nickel plating layer consists of the following components in percentage by weight: zn: 0.001-3%; fe: 0.002-2%; cu:0.0015 to 0.95 percent; mg:0.001 to 0.8 percent; al: 0.001-3%; mn: 0.001-1%; the balance being Ni and impurities.
Preferably, the nickel plating layer further contains 0.001 to 0.9 wt% Cr.
Preferably, the nickel plating layer further contains 0.005 to 0.85 wt% of Co.
Preferably, the nickel plating layer further contains 0.03 to 30 wt% of C.
The preparation method of the nickel-plated Al-Fe-B alloy conductor material comprises the following steps:
1. the aluminum alloy material is manufactured into an aluminum alloy rod through smelting, casting and rolling procedures, and then is drawn into an aluminum alloy wire;
2. chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank.
The zinc dipping process comprises the following steps: 200-280 g/L of KOH, 20-30 g/L of ZnO, 60-80 g/L of potassium sodium tartrate and FeCl 3 20～26g/L，KNO 3 10-15 g/L, temperature: the room temperature is kept for 10 to 15 minutes.
Zinc impregnation is the key point of the process, and the quality of the zinc impregnation layer directly influences the quality of the nickel plating layer. The zinc impregnation function is as follows: (1) removing the exposed surface layer, (2) making the relative potential of the aluminum alloy conductor surface higher.
When in preparation, znO is firstly mixed into paste and added into sodium hydroxide solution, and is continuously stirred, otherwise Zn (OH) is easy to form 2 And 3, adding 3-valence Fe ions can improve the binding force between the coating and the matrix. The added potassium sodium tartrate can form a complex with 3-valent Fe ions to prevent the 3-valent Fe ions from forming Fe (OH) 3 And (5) precipitation. KNO (KNO) 3 The oxidation-reduction reaction can be promoted. Because the electrode potential of Zn is close to that of A1, the deposition speed of Zn is slow, the leaching time is too short, and a zinc layer cannot be deposited; the zinc layer is re-dissolved for too long, so that it is important to control the zinc dipping time, if the quality of the primary zinc dipping layer is poor, 100ml/L HNO can be used 3 And (5) removing the solution.
In order to enhance the binding force between the nickel plating layer and the aluminum substrate, a bright nickel plating process or a dark nickel plating process can be selected.
The bright nickel electroplating process comprises the following steps:
NiSO 4 400～600g/L，NiCl 2 100～150/L，H 3 BO 4 80-120 g/L saccharin 6-10 g/L, 1.4-butynediol 3-5 g/L coumarin 1-2 g/L, sodium dodecyl sulfate 5-15 g/L, pH 3.8-4.6 g/L, D k 6～10A/dm 2 The temperature is 45-55 ℃ and the time is 50-55 min.
The process for electroplating the dark nickel comprises the following steps:
NiSO 4 300～350g/L，KCl 30～45g/L，Na 2 SO 4 75～85g/L，D k 4～8A/dm 2 the temperature is 20-35 ℃ and the time is 40-45 min.
After zinc impregnation of the aluminum workpiece, nickel is plated as soon as possible, and in order to prevent the zinc impregnation layer from being dissolved in the nickel plating solution, the aluminum substrate is charged into the nickel plating solution. The bright plating layer can be directly plated by electroplating bright nickel, the plating layer is fine, but the internal stress of the plating layer is large, the plating layer cannot be too thick, or else the plating layer is easy to peel.
The plating layer obtained by electroplating the dark nickel has fine crystallization, good toughness, smaller internal stress and better corrosion resistance than bright nickel.
Preferably, the nickel-plated aluminum alloy material may be manufactured into a 2-class, 5-class or 6-class circular conductor, a strip-shaped conductor, or a strip-shaped conductor.
The invention has the following beneficial effects:
1. the nickel-plated Al-Fe-B alloy conductor material provided by the invention has good conductivity, tensile property and fatigue resistance, the conductivity is more than or equal to 61% IACS, the elongation at break is more than or equal to 15%, the tensile strength is more than or equal to 100MPa, and the number of fatigue bending times at 90 degrees is more than or equal to 25.
2. According to the Al-Fe-B alloy conductor material, through carrying out chemical degreasing, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc immersing, water washing, nickel plating, water washing, drying, inspection, and nickel plating of an aluminum alloy wire blank, after a whole set of nickel plating working procedures are carried out, the prepared nickel plating Al-Fe-B alloy conductor wire core has excellent corrosion resistance, the corrosion resistance is greatly superior to that of a nickel-plated aluminum alloy, the corrosion resistance is also superior to that of a copper core cable, an atmosphere corrosion test and an electrolyte solution corrosion test are carried out according to a GB 10124 uniform corrosion full immersion test method in a metal material laboratory, the corrosion rate is less than or equal to 0.05mm/a under the condition of 720 hours of a test period, the stability is good in salt fog and salt water, the problems that the salt alkalinity in coastal areas is relatively high, and chemical plant compounds and acid-alkali corrosion are relatively serious and the common aluminum alloy cable is not suitable to use are solved, and the alloy cable prepared by adopting the nickel plating Al-Fe-B alloy conductor material completely meets the requirements of severe environments in places.
3. According to the nickel-plated aluminum alloy cable provided by the invention, the hardness, the wear resistance and the toughness of the existing aluminum alloy material are greatly improved by the technology of the surface nickel plating.
4. The alloy cable prepared from the nickel-plated Al-Fe-B alloy conductor material can be directly connected with a copper terminal, so that the problems of instability caused by connection of a copper-aluminum transition terminal and unnecessary installation of supporting facilities are avoided. Because ordinary aluminum alloy cable can't be with copper terminal direct connection, because copper aluminum material is different, the two direct connection can produce electrochemical corrosion, influences the life of cable and brings the potential safety hazard, adopts copper aluminum transition terminal can solve the aluminum alloy cable and terminal's connection problem, avoids electrochemical corrosion's appearance, but adopts copper aluminum transition terminal direct connection also can produce some problems. For example, the power distribution cabinet is designed according to the standard of copper core cables, because the cost performance of the aluminum alloy cable is higher, the aluminum alloy cable is replaced when being installed, because the conductivity of the aluminum alloy cable is slightly poorer than that of copper, when the aluminum alloy cable is replaced by the aluminum alloy cable, one or two specifications of the cable are correspondingly increased, and therefore, the copper-aluminum transition terminal is correspondingly replaced by the corresponding specification, which can lead to the fact that the terminal cannot be directly installed with the power distribution cabinet. And if the joint part is not well crimped with the terminal, the aluminum alloy conductor core may have a part exposed outside, the corrosion resistance of the common aluminum alloy cable is not good, and the joint part may have corrosion conditions, so that the service life of the cable is influenced. The nickel-plated Al-Fe-B alloy aluminum alloy cable can be directly crimped with a copper terminal, and according to national standard GB/T9327 ' rated voltage 35kV (um=40.5 kV) and below ' crimping and mechanical connection fitting test methods and requirements for power cable conductors ', 1000 times of thermal cycle experiments are passed, the installation connection is stable and reliable, the risk of easy corrosion caused by exposure of conductors at joint positions is avoided, and the service life of the cable is prolonged.
5. The nickel-plated aluminum alloy conductor provided by the invention solves the problem of weldability of aluminum alloy and realizes a direct welding connection mode with matched facilities.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The specific implementation mode adopts the following technical scheme: the nickel-plated Al-Fe-B alloy comprises an aluminum alloy and a nickel-plated layer which is plated on the surface of the aluminum alloy and is larger than or equal to 100nm, wherein the aluminum alloy comprises the following components in percentage by weight: fe:0.01 to 1.1 percent; b:0.001 to 0.4 percent; the balance of Al and impurities; the nickel plating layer consists of the following components in percentage by weight: zn: 0.001-3%; fe: 0.002-2%; cu:0.0015 to 0.95 percent; mg:0.001 to 0.8 percent; al: 0.001-3%; mn: 0.001-1%; the balance being Ni and impurities.
The thickness of the nickel plating layer is 1 μm to 100 μm.
The nickel plating layer also contains 0.001 to 0.9 weight percent of Cr; preferably, the nickel plating layer further comprises 0.005 to 0.85 wt% of Co. Preferably, the nickel plating layer further comprises 0.03 to 30 wt% of C.
For matrix aluminum in the aluminum alloy, pure aluminum of industrial Al99.70 can be adopted, so that the aluminum alloy prepared by the method has the advantages of sufficient raw material supply, low cost, convenient purchase and the like; meanwhile, the aluminum base can also adopt refined aluminum or high-purity aluminum as a matrix alloy, and the aluminum base has higher quality than the common aluminum base material, and the processed product has more advantages in the aspects of electrical property and mechanical property.
In the invention, aluminum is taken as a matrix, and trace iron is added to improve the performance of the aluminum alloy, so that the iron can improve the mechanical strength and tensile property of the aluminum alloy, improve the tensile strength, yield property, heat resistance and creep resistance of the aluminum, and improve the plasticity of the aluminum alloy. And trace boron is added, so that the boron can refine grains in the aluminum alloy, improve the electrical property and improve the processing characteristics.
The Al-Fe-B alloy material of the specific embodiment is manufactured into an aluminum alloy rod through smelting, casting and rolling procedures, and then the aluminum alloy rod is manufactured into an aluminum alloy wire.
In order to prepare the nickel-plated Al-Fe-B alloy material, the specific embodiment adopts a nickel-plating process flow, and the nickel-plating process flow is as follows: the method comprises the steps of chemical oil removal of the surface of the aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc dipping, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank.
The zinc dipping process comprises the following steps:
200-280 g/L of KOH, 20-30 g/L of ZnO, 60-80 g/L of potassium sodium tartrate and FeCl 3 20～26g/L，KNO 3 10-15 g/L, temperature: the room temperature is kept for 10 to 15 minutes.
In order to enhance the binding force between the nickel plating layer and the aluminum substrate, a bright nickel plating process or a dark nickel plating process can be selected.
If the bright nickel electroplating process is adopted, the bright nickel electroplating process is as follows:
NiSO 4 400～600g/L，NiCl 2 100～150/L，H 3 BO 4 80-120 g/L saccharin 6-10 g/L, 1.4-butynediol 3-5 g/L coumarin 1-2 g/L, sodium dodecyl sulfate 5-15 g/L, pH 3.8-4.6 g/L, D k 6～10A/dm 2 The temperature is 45-55 ℃ and the time is 50-55 min.
If the process of plating the dark nickel is adopted, the process of plating the dark nickel is as follows:
NiSO 4 300～350g/L，KCl 30～45g/L，Na 2 SO 4 75～85g/L，D k 4～8A/dm 2 the temperature is 20-35 ℃ and the time is 40-45 min.
After zinc impregnation of the aluminum workpiece, nickel is plated as soon as possible, and in order to prevent the zinc impregnation layer from being dissolved in the nickel plating solution, the aluminum substrate is charged into the nickel plating solution. The bright plating layer can be directly plated by electroplating bright nickel, the plating layer is fine, but the internal stress of the plating layer is large, the plating layer cannot be too thick, or else the plating layer is easy to peel.
The plating layer obtained by electroplating the dark nickel has fine crystallization, good toughness, smaller internal stress and better corrosion resistance than the bright nickel.
The nickel-plated aluminum alloy material prepared by the procedures can be manufactured into 2-class or 5-class or 6-class circular conductors, is used for wire conductor cores of wires and cables, can be used for manufacturing power cables, can also be used for manufacturing wires or wire harness products, and is used in various fields such as new energy automobiles, photovoltaic power generation, wind power generation, wires for electrical equipment or household appliances. The nickel-plated aluminum alloy material can also be made into strip conductors or ribbon conductors for bus bars or straps, or for bus bars.
Example 1
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a nickel layer with the thickness of 0.1 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2:
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 200g/L, znO20 g/L, potassium sodium tartrate 60g/L, feCl 3 20g/L，KNO 3 10g/L, at room temperature, for 10min.
(4) The bright nickel electroplating process in the step (2) comprises the following steps:
NiSO 4 400g/L，NiCl 2 100/L，H 3 BO 4 80g/L saccharin 6g/L, 1.4-butynediol 3g/L, coumarin 1g/L, sodium dodecyl sulfate 5g/L, pH 3.8g/L, D k 6A/dm 2 The temperature is 45 ℃ and the time is 50min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 2
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 50 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2:
(3) The zinc dipping process conditions in the step (2) are as follows:
280g/L of KOH, 30g/L of ZnO, 80g/L of potassium sodium tartrate and FeCl 3 26g/L，KNO 3 15g/L, and the time is 15min at room temperature.
(4) The bright nickel electroplating process in the step (2) comprises the following steps:
NiSO 4 600g/L，NiCl 2 150/L，H 3 BO 4 120g/L saccharin 10g/L, 1.4-butynediol 5g/L, coumarin 2g/L, sodium dodecyl sulfate 15g/L, pH 4.6g/L, D k 10A/dm 2 The temperature is 55 ℃ and the time is 55min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 3
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 30 mu m on the surface of the aluminum alloy wire obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2:
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 240g/L, znO 25g/L, potassium sodium tartrate 70g/L, feCl 3 24g/L，KNO 3 13g/L, at room temperature, for 12min.
(4) The bright nickel electroplating process in the step (2) comprises the following steps:
NiSO 4 500g/L，NiCl 2 140/L，H 3 BO 4 100g/L saccharin 8g/L, 1.4-butynediol 4g/L, coumarin 1.5g/L, sodium dodecyl sulfate 10g/L, pH 4.0g/L, D k 7A/dm 2 The temperature is 50 ℃ and the time is 52min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 4
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 5 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2: (containing thickness)
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 250g/L, znO 22g/L, sodium potassium tartrate 68g/L, feCl 3 23g/L，KNO 3 14g/L, and at room temperature for 12min.
(4) The bright nickel electroplating process in the step (2) comprises the following steps:
NiSO 4 455g/L，NiCl 2 126L，H 3 BO 4 95g/L saccharin 7.6g/L, 1.4-butynediol 3.5g/L, coumarin 1.4g/L, sodium dodecyl sulfate 8.8g/L, pH 4.0g/L, D k 7A/dm 2 The temperature is 48 ℃ and the time is 52min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 5
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 100 mu m on the surface of the aluminum alloy wire obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2:
(3) The zinc dipping process conditions in the step (2) are as follows:
270g/L KOH, 26g/L ZnO, 78g/L sodium potassium tartrate and FeCl 3 22g/L，KNO 3 13g/L, at room temperature, for 14min.
(4) The bright nickel electroplating process in the step (2) comprises the following steps:
NiSO 4 550g/L，NiCl 2 145/L，H 3 BO 4 110g/L saccharin 9.4g/L, 1.4-butynediol 4.5g/L, coumarin 1.7g/L, sodium dodecyl sulfate 15g/L, pH 4.4g/L, D k 9A/dm 2 The temperature is 52 ℃ and the time is 55min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 6
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 50 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, dark nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2:
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 225g/L, znO 23g/L, potassium sodium tartrate 65g/L and FeCl 3 21g/L，KNO 3 10g/L, at room temperature, for 10min.
(4) The process for electroplating the dark nickel in the step (2) comprises the following steps:
NiSO 4 300g/L，KCl 30g/L，Na 2 SO 4 75g/L，D k 4A/dm 2 the temperature is 20 ℃ and the time is 40min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 7
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 400 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, dark nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2: (containing thickness)
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 240g/L, znO 30g/L, potassium sodium tartrate 74g/L, feCl 3 26g/L，KNO 3 15g/L, and the time is 13min at room temperature.
(4) The process for electroplating the dark nickel in the step (2) comprises the following steps:
NiSO 4 350g/L，KCl 45g/L，Na 2 SO 4 85g/L，D k 8A/dm 2 the temperature is 35 ℃ and the time is 45min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 8
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 200 mu m on the surface of the aluminum alloy wire rod obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire rod is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, dark nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2: (containing thickness)
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 235g/L, znO 23g/L, potassium sodium tartrate 68g/L and FeCl 3 24g/L，KNO 3 13g/L, at room temperature, for 12min.
(4) The process for electroplating the dark nickel in the step (2) comprises the following steps:
NiSO 4 330g/L，KCl 43g/L，Na 2 SO 4 78g/L，D k 5A/dm 2 the temperature is 28 ℃ and the time is 45min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 9
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of 160 mu m nickel on the surface of the aluminum alloy wire obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, dark nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2: (containing thickness)
(3) The zinc dipping process conditions in the step (2) are as follows:
KOH 260g/L, znO 26g/L, potassium sodium tartrate 76g/L, feCl 3 ·25g/L，KNO 3 14g/L, and 15min at room temperature.
(4) The process for electroplating the dark nickel in the step (2) comprises the following steps:
NiSO 4 335g/L，KCl 36g/L，Na 2 SO 4 80g/L，D k 7A/dm 2 the temperature is 30 ℃ and the time is 44min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Example 10
(1) Putting an aluminum-iron alloy and an aluminum-boron alloy ingot into a smelting furnace, manufacturing an aluminum alloy rod through smelting, casting and rolling procedures, and manufacturing the aluminum alloy rod into an aluminum alloy wire, wherein the alloy compositions are shown in table 1;
(2) Electroplating a layer of nickel with the thickness of 550 mu m on the surface of the aluminum alloy wire obtained in the step (1), wherein the nickel plating process flow of the surface of the aluminum alloy wire is as follows:
chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, dark nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank. The composition of the nickel plating layer is shown in table 2: (containing thickness)
(3) The zinc dipping process conditions in the step (2) are as follows:
270g/L KOH, 28g/L ZnO, 79g/L sodium potassium tartrate and FeCl 3 25g/L，KNO 3 15g/L, and the time is 15min at room temperature.
(4) The process for electroplating the dark nickel in the step (2) comprises the following steps:
NiSO 4 345g/L，KCl 42g/L，Na 2 SO 4 82g/L，D k 8A/dm 2 the temperature is 30 ℃ and the time is 45min.
The aluminum alloy prepared according to the above method and the aluminum alloy performance after the nickel plating process were tested, and the results are shown in table 3.
Table 1 shows the composition (wt%) of the aluminum alloy prepared in the examples
Table 2 Table of the components (wt%) of the Nickel plating layer prepared in the examples
Table 3 shows the Performance test data of Nickel-plated aluminum alloy prepared in examples
Table 4 Performance test data of non-Nickel-plated aluminum alloy prepared in comparative example
As a result of comparison of examples, it was found that the examples were carried out with nickel plating treatment on aluminum alloy conductor materials, while the comparative examples were not carried out with nickel plating treatment, there was no substantial difference in electric properties, tensile strength, elongation at break and fatigue bending property at 90 degrees, but the aluminum alloy without nickel plating treatment was significantly inferior to the nickel-plated aluminum alloy materials in corrosion resistance and connection property with copper terminals, and the corrosion rate of the nickel-plated aluminum alloy was +.0.05 mm/a, and after connection with copper terminals, it was able to pass 1000 thermal cycle tests.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The nickel-plated Al-Fe-B alloy is characterized by comprising an aluminum alloy and a nickel-plated layer with the surface of the aluminum alloy being larger than or equal to 100nm, wherein the aluminum alloy comprises the following components in percentage by weight: fe:0.01 to 1.1 percent; b:0.001 to 0.4 percent; the balance of Al and impurities; the nickel plating layer consists of the following components in percentage by weight: zn: 0.001-3%; fe: 0.002-2%; cu:0.0015 to 0.95 percent; mg:0.001 to 0.8 percent; al: 0.001-3%; mn: 0.001-1%; the balance being Ni and impurities.
2. The nickel-plated Al-Fe-B alloy according to claim 1, wherein the nickel-plated layer further comprises 0.001 to 0.9 wt% Cr.
3. The nickel-plated Al-Fe-B alloy according to claim 1, wherein the nickel-plated layer further comprises 0.005-0.85 wt% Co.
4. The nickel-plated Al-Fe-B alloy according to claim 1, wherein the nickel-plated layer further comprises 0.03-30 wt% C.
5. The preparation method of the nickel-plated Al-Fe-B alloy conductor material is characterized by comprising the following steps of:
(1) The aluminum alloy material is manufactured into an aluminum alloy rod through smelting, casting and rolling procedures, and then is drawn into an aluminum alloy wire;
(2) Chemical degreasing of the surface of an aluminum alloy wire blank, hot water washing, cold water washing, strong alkali etching, water washing, light emitting, water washing, zinc soaking, water washing, nickel plating, water washing, drying, inspection and nickel plating of the aluminum alloy wire blank.
6. The method for preparing a nickel-plated Al-Fe-B alloy conductor material according to claim 5, wherein the zinc dipping process is as follows: 200-280 g/L of KOH, 20-30 g/L of ZnO, 60-80 g/L of potassium sodium tartrate and FeCl 3 20～26g/L，KNO 3 10-15 g/L, temperature: the room temperature is kept for 10 to 15 minutes.
7. The method for preparing a nickel-plated Al-Fe-B alloy conductor material according to claim 5, wherein the nickel plating process adopts a bright nickel plating process or a dark nickel plating process; the bright nickel electroplating process comprises the following steps:
NiSO 4 400～600g/L，NiCl 2 100～150/L，H 3 BO 4 80-120 g/L saccharin 6-10 g/L, 1.4-butynediol 3-5 g/L coumarin 1-2 g/L, sodium dodecyl sulfate 5-15 g/L, pH 3.8-4.6 g/L, D k 6～10A/dm 2 The temperature is 45-55 ℃ and the time is 50-55 min.
8. The method for preparing the nickel-plated Al-Fe-B alloy conductor material according to claim 7, wherein the process for electroplating the dark nickel is as follows:
NiSO 4 300～350g/L，KCl 30～45g/L，Na 2 SO 4 75～85g/L，D k 4～8A/dm 2 the temperature is 20-35 ℃ and the time is 40-45 min.
9. The method for preparing a nickel-plated Al-Fe-B alloy conductor material according to claim 5, wherein the nickel-plated aluminum alloy wire blank is manufactured into a 2-class, 5-class or 6-class round conductor, a strip-shaped conductor or a strip-shaped conductor.
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