52 results about "Nickel electroplating" patented technology

The invention relates to the technical field of electronic component manufacturing, and discloses a method for improving the anti-aging capability of an inductance magnetic core, which comprises the following steps: pretreatment and bottom layer electroplating: performing oil removal and acid pickling activation on the inductance magnetic core, performing nickel electroplating treatment after cleaning, and forming a bottom nickel layer on the surface of the end of the magnetic core; chemical densification deposition: adopting the plating solution in the first aspect, immersing the magnetic core treated in the step (1) into the heated plating solution, and reacting under the condition of not applying impressed current, a Ni-P-B-W barrier layer is deposited on the surface of a bottom nickel layer, an amorphous-nanocrystalline composite structure is constructed on the surface of an electrode through a combined process of bottom nickel electroplating, middle chemical deposition of the Ni-P-B-W compact barrier layer and surface tin electroplating, the barrier layer utilizes the co-deposition effect of phosphorus, boron, tungsten and nickel, the grain boundary defect is eliminated, and the performance of the electrode is improved. And a mutual diffusion path of bottom layer metal and surface layer tin and a permeation channel of an external corrosive medium are effectively blocked.

The invention belongs to the technical field of plating processes, and particularly relates to a high-binding-force diamond aluminum plating process. The method comprises the following specific steps: S1, composite nickel plating: carrying out composite nickel plating on a pretreated diamond aluminum composite material; s2, palladium activation, wherein the diamond-aluminum composite material obtained after composite nickel plating is put into palladium salt to be soaked, and then the diamond-aluminum composite material is taken out to be cleaned; s3, chemical nickel plating; s4, sensitization is carried out; s5, palladium activation; and S6, chemical nickel plating, nickel electroplating, annealing treatment and drying are sequentially conducted on the diamond aluminum composite material, and the plating process is completed. According to the plated diamond aluminum, a plating layer does not peel, swell and discolor under the gold-tin soldering condition, diamond particles do not fall off, the overall wettability is good, the stability is high, the cost is low, operation is easy, and the condition of batch production can be met.

The invention provides a preparation method of a nickel-plated BC solar cell silicon substrate, a BC solar cell and a photovoltaic module, and relates to the technical field of solar cells. The preparation method comprises the following steps: taking a BC cell silicon substrate as a cathode, enabling the to-be-electroplated surface of the BC cell silicon substrate to be in contact with nickel electroplating liquid, carrying out flash plating treatment, and then carrying out main plating treatment to obtain a nickel-plated BC solar cell silicon substrate. According to the preparation method of the nickel-plated BC solar cell silicon substrate, flash plating is firstly carried out, a layer of extremely thin nickel can be rapidly covered on a patterned area of the silicon substrate, and a sealing bottom layer which is firm in attachment and low in porosity is constructed; the current distribution is more uniform, and nickel ions are favorably diffused and deposited towards the deep part and the central area of the pattern, so that better deep plating capability and overall thickness uniformity are obtained, and finally, the adhesive force, the uniformity and the reliability are comprehensively improved.

The invention discloses a pre-rolling anti-cracking surface treatment method for a large-section titanium alloy square billet, and belongs to the technical field of titanium alloy surface treatment. The method comprises the following steps: S1, sequentially carrying out surface grinding and oil removal treatment on a titanium alloy square billet; s2, the pretreated square billet is subjected to nickel electroplating, and an initial nickel plating layer is formed; s3, the nickel-plated square billet is heated and subjected to heat preservation under the vacuum condition; s4, secondary nickel electroplating is conducted on the square billet after stress relief, and a thickened nickel plating layer is formed; and S5, the secondary nickel-plated square billet is rolled after being subjected to uniform-temperature heating and heat preservation. A uniform and compact nickel plating layer is formed on the surface of the large-section titanium alloy square billet through electroplating, the temperature reduction rate of the surface layer of the square billet after the square billet is discharged from a furnace can be reduced, the temperature gradient between the surface and the interior of the billet is remarkably reduced, and the rolling plasticity of the billet in the rolling starting link is guaranteed; the technical problem that the large-section titanium alloy square billet is prone to cracking in the rolling process can be effectively solved.

The invention relates to a nano nickel electroplating process used after secondary zinc deposition of an aluminum alloy. The nano nickel electroplating process comprises two steps of preparing a plating solution and electroplating. A nano nickel agent A and a nano nickel agent B are added into the plating solution, and the nano nickel agent A comprises, by mass, 5%-9% of nickel sulfate, 6%-10% of sodium propargyl sulfonate, 5%-9% of sodium hypophosphite monohydrate and 72%-84% of deionized water; and the nano nickel B agent comprises the following components in percentage by mass: 5-9% of butynol alcohol ether sodium propane sulfonate, 6-10% of sodium propargyl sulfonate, 5-9% of sodium hypophosphite monohydrate and 72-84% of deionized water. Sodium propargyl sulfonate is coordinated with Ni < 2 + > in a high-activity area of a workpiece through electrostatic adsorption and coordination so as to inhibit deposition of Ni < 2 + >; the surface energy of a low-activity area of the workpiece is low, Ni < 2 + > deposition is basically not affected, negatively-charged propargyl sulfonate radicals can be attracted by weak positive charges in the area, and continuous generation of new crystal nucleuses is promoted. The sodium hypophosphite monohydrate can prevent Ni < 2 + > from being oxidized through reaction with oxygen. Butynol alcohol ether sodium propane sulfonate inhibits overgrowth of crystal grains and refines the crystal grain structure through adsorption and steric hindrance effect.

The invention provides a portable nickel electroplating device and method for in-situ repair, and relates to the technical field of electroplating repair. According to the nickel electroplating device, firstly, in-situ fixing and repairing of the nickel plating layer of the damaged workpiece by the nickel electroplating device are achieved through the vacuum fixing module, the cost caused by disassembly of the damaged workpiece and secondary damage caused by movement of the damaged workpiece are avoided, and portability is achieved; then, a replaceable customized electroplating mold module is adopted, directional repair is achieved for damaged areas of different shapes, and the application range is wider; and finally, the electroplating liquid storage module and the nickel electroplating device are integrally designed, the electroplating liquid is directly pressed into the customized electroplating mold module through the electroplating liquid injection module, and the nickel electroplating technological process is simplified.

The application provides a method for analyzing nickel in a zinc-nickel electroplating solution. The method comprises: performing standard coulometric titration on a sodium thiosulfate standard solution to calculate an actual molar concentration c 标准 ; adding an oxidizing agent solution and a sodium hydroxide solution to the zinc-nickel electroplating solution to obtain a high-nickel hydroxide precipitate, then adding a KI solution and sulfuric acid to obtain a sample solution; adding a second part of the sodium thiosulfate standard solution and a second part of a KI electrolyte to an electrolytic cup to perform sample coulometric titration and calculate the molar concentration c 镍 of nickel in the zinc-nickel electroplating solution. The application uses the change in the valence state of nickel hydroxide, combines a redox reaction with an indirect coulometric titration method, and obtains a cyanide-free coulometric titration method for quantitatively determining the content of nickel in a zinc-nickel electroplating solution. The method does not need to prepare a standard solution, indirectly determines nickel by using electrically generated iodine in a high-concentration zinc metal ion background, realizes high selectivity, high precision, and online determination of the content of nickel, and can significantly improve the detection efficiency.

This utility model relates to the field of anode racks for electroplating, and discloses an anode rack for zinc-nickel electroplating, including a support column, an upper disk, a lower disk, a sliding block, a moving rod, a fixed rod, an arc-shaped groove, a stud, and an operating wheel. In use, the operating wheel is first rotated clockwise to move the stud and the moving rod away from the fixed rod, causing the arc-shaped groove on the fixed rod to disengage from the support column, thus releasing the support column's constraint. Then, the distance between the upper and lower disks is adjusted according to the size of the workpiece to be electroplated. After adjustment, the operating wheel is rotated counterclockwise to move the stud and the moving rod closer to the fixed rod until the fixed rod and the moving rod are tightly abutted. At this point, the two arc-shaped grooves form a semi-circular groove that fits tightly against the outer wall of the support column, confining and fixing the support column within the arc-shaped groove. This utility model has the advantages and effects of ensuring a stable connection between the upper disk and the support column, effectively preventing shaking and detachment, and improving the safety and efficiency of subsequent electroplating.

Provided is a nickel plating solution in which a ceramic substrate is less likely to be eroded. The plating solution of the present invention contains a nickel ion supply source, a sulfonic acid represented by formula 1: R-SO3H (R is an alkyl group or a hydroxyalkyl group having 1 to 5 carbon atoms) or a salt thereof, sodium hydroxide, and a pH buffer.

The present invention relates to the technical field of metal materials, and discloses a pre-nickel-plated steel for battery shells and a preparation method thereof. The method includes hot rolling, coiling, pickling, cold rolling, nickel electroplating and continuous annealing; the nickel electroplating process includes: preparing nickel sulfate, nickel chloride, cobalt sulfate, boric acid, sodium lauryl sulfate, citric acid, pre-treated filler, nano-titanium dioxide particles and cerium salt into an electroplating solution, and then placing the steel substrate obtained after cold rolling in the electroplating solution for electroplating, wherein the concentration of the pre-treated filler is 1.2-1.5 g / L, the concentration of the nano-titanium dioxide particles is 0.5-1.0 g / L, and the concentration of the cerium salt is 0.1-0.2 g / L. The pre-nickel-plated steel for battery shells prepared by this method has excellent corrosion resistance, high hardness, good stamping performance, strong bonding between the nickel plating layer and the steel substrate, and low surface iron exposure rate.

The utility model discloses an acidic zinc-nickel electroplating reaction device, and relates to the technical field of workpiece electroplating. The acidic zinc-nickel electroplating reaction device comprises an electroplating bath, a plurality of anode bars and a semi-permeable membrane. Electroplating liquid can be contained in the electroplating bath; the plurality of anode bars are positioned in the electroplating bath and can be at least partially immersed in the electroplating liquid, the interior of each anode bar is provided with an accommodating space through which the anode liquid can flow, and a zinc anode immersed in the anode liquid is also arranged in the accommodating space. The semipermeable membrane covers the outer side of the anode bar and is used for isolating the anolyte from the electroplating solution, and the semipermeable membrane can permeate zinc ions in the anolyte and isolate nickel ions in the electroplating solution. By adopting the technology provided by the utility model, the phenomenon of zinc anode dissolution blocking caused by zinc-nickel replacement can be effectively avoided.

The invention relates to a nickel electroplating bath for depositing a decorative nickel coating on a substrate to be treated, characterized in that the electroplating bath comprises at least one source of nickel ions, at least one amino acid and / or at least one carboxylic acid other than an amino acid; wherein the total concentration of the amino acids is in the range of from 1 to 10 g / l, and wherein the total concentration of carboxylic acids, not amino acids, is in the range of from 10 to 40 g / l; wherein the electroplating bath is free of boric acid; wherein the total concentration of the nickel ions is in the range of 55 to 80 g / l; and wherein the nickel electroplating bath has a chlorine content in the range of 7.5 to 40 g / l. The invention also relates to a method for depositing a nickel coating on a substrate to be treated; and the use of such a nickel electroplating bath according to the invention for depositing bright, semi-bright, satin, matte or non-conductive particle-containing nickel coatings by carrying out this method.

The invention discloses a preparation method of a nickel-cobalt alloy hydrogen evolution catalytic electrode with a micro-nano composite structure, and the method comprises the following steps: S1, preparing a nickel electroplating solution, immersing a copper substrate into the nickel electroplating solution, and preparing a nickel coating on the surface of the copper substrate by adopting a direct current electrodeposition method; s2, preparing a nickel-cobalt electroplating solution, transferring the copper substrate subjected to nickel plating into the nickel-cobalt electroplating solution, and depositing a nickel-cobalt alloy plating layer on the surface of the nickel plating layer by adopting the direct-current electrodeposition technology again; and S3, the obtained nickel-cobalt alloy coating is subjected to surface activation treatment in an activation solution, and the nickel-cobalt alloy hydrogen evolution catalytic electrode is obtained after cleaning and drying. According to the method, the nickel-cobalt alloy hydrogen evolution electrode with the micro-nano composite structure can be constructed on the surface of the copper matrix, and the nickel-cobalt alloy hydrogen evolution electrode has efficient hydrogen evolution catalytic performance.

The invention provides a preparation method of a copper-nickel composite coating carbon fiber reinforced epoxy resin composite material, and belongs to the technical field of electromagnetic shielding materials, and the preparation method comprises the following steps: pretreating the surface of carbon fiber; the pretreated carbon fiber serves as a cathode, a nickel plate serves as an anode, and spherical nickel-plated layer carbon fiber is obtained through electroplating in nickel electroplating liquid; immersing the nickel-plated carbon fiber into a copper plating solution for copper plating to obtain copper-nickel composite plated carbon fiber; the copper-nickel composite coating carbon fiber is immersed in KH550 hydrolysate to be modified, and modified copper-nickel composite coating carbon fiber is obtained; placing the modified copper-nickel composite coating carbon fiber in a mold, and infiltrating the modified copper-nickel composite coating carbon fiber by using a carboxylated carbon nanotube doped epoxy resin matrix; and curing and demolding the infiltrated modified copper-nickel composite coating carbon fiber to obtain the copper-nickel composite coating carbon fiber reinforced epoxy resin composite material. According to the preparation method of the copper-nickel composite coating carbon fiber reinforced epoxy resin composite material provided by the invention, the prepared material is wide in electromagnetic shielding frequency band coverage and good in mechanical property.

The invention discloses a manufacturing method of a thick copper circuit board, and discloses the thick copper circuit board, and the manufacturing method of the thick copper circuit board comprises the following steps: 1, obtaining a substrate, and carrying out the full-board electroplating processing of the substrate, so as to form a thick copper layer on the substrate; 2, manufacturing a local gold plating pattern on the thick copper layer through dry film pasting, exposure and development in sequence; 3, the whole thick copper layer serves as a conductor, and nickel electroplating and gold electroplating are sequentially carried out on the position of the local gold electroplating pattern; 4, the thick copper layer is subjected to film stripping through alkaline film stripping liquid; 5, etching the thick copper layer by adopting an etching solution, and manufacturing an inner layer circuit on the thick copper layer; the whole thick copper layer is used as a conductor to carry out nickel electroplating and gold electroplating, so that the requirement of designing and removing a gold electroplating lead on the copper layer in the traditional process is avoided, the mechanical damage of the circuit board, which is easily caused when the lead is removed, is avoided, and the yield of the circuit board is remarkably improved.

The application discloses a preparation method of a Ni-Al gradient coating capable of improving the hardness of low-carbon steel, and the method comprises the following steps: performing surface oil removal and rust removal pretreatment on a low-carbon steel sample; performing nickel electroplating on the surface of the low-carbon steel substrate; and performing solid powder embedding aluminizing on the surface of the sample after the nickel plating. The application combines the nickel electroplating process and the solid powder embedding aluminizing process well by improving the coating raw material formula and the preparation process, and then a Ni-Al functional gradient coating with good combination, high hardness, no surface defects and not easy to fall off is prepared on the surface of the low-carbon steel, so as to meet the application requirement of high hardness of the low-carbon steel surface.

The utility model relates to the technical field of zinc-nickel electroplating, in particular to a vertical lifting circulating zinc-nickel electroplating device which comprises a frame and a box body, the outer wall of the left side of the box body is fixedly connected with a first motor through a support, and an output shaft of the first motor is connected with a double-end stud through a reduction gearbox. And the two sides of the double-end stud are rotationally connected with the box body through bearings. After the quota of the adjusting mechanism and the plate body is adjusted, the bolt is rotated reversely to fix the positions of the two block bodies, in this way, the contact position of the plate body and the metal plate is increased by adjusting the positions of the block bodies, the metal plate is fixed more stably, and therefore the working limitation is reduced; by means of the mode, the position of electroplating the zinc and the nickel on the metal plate can be accurately controlled according to the position of electroplating the zinc and the nickel on the metal plate, and therefore the working quality is improved.

The application discloses a method for improving surface tension of a neodymium-iron-boron product after electroplating of nickel-copper-nickel, and relates to the technical field of sintered neodymium-iron-boron magnetic materials, aiming at solving the problem that the surface tension of the neodymium-iron-boron product after electroplating of nickel-copper-nickel cannot meet the requirements and the product consistency is poor. The method comprises the following steps: performing plasma cleaning on the neodymium-iron-boron product after electroplating of nickel-copper-nickel, so as to improve the surface tension of the product without damaging the salt mist resistance of the plating layer, and make the surface tension of the product consistent. More preferably, the neodymium-iron-boron blank is processed into a certain size, and then is subjected to surface treatment of pickling and ultrasonic cleaning or laser cleaning before electroplating of nickel-copper-nickel, so that the surface tension of the final product can be improved more easily. The method effectively improves the problem of low surface tension caused by traditional electroplating of nickel-copper-nickel, greatly improves the product consistency, and almost has no difference between products of the same batch, and has no obvious influence on the salt mist resistance of the nickel-copper-nickel layer of the product.

The application provides a method for comprehensive treatment of titanium dioxide waste acid and electroplating nickel recovery liquid, comprising the following steps: S1. treating the titanium dioxide waste acid to separate sulfuric acid; S2. treating the electroplating nickel recovery liquid to separate nickel salt; S3. reacting the sulfuric acid obtained in step S1 with the nickel salt obtained in step S2 to obtain nickel sulfate. The titanium dioxide waste acid and the nickel-containing recovery liquid are comprehensively treated for the first time, the sulfuric acid obtained by treating the titanium dioxide waste acid is used as a raw material for treating the nickel-containing recovery liquid, resources are saved, waste utilization is realized, the pressure of treating the waste acid in the titanium dioxide factory is reduced, and better economic and environmental benefits are obtained.

The application provides a ceramic relay shell secondary metallization electroplating nickel pretreatment process, which comprises the following steps: S1, pretreatment: a micro-etching solution is used to perform immersion micro-etching on the surface of the shell to form a metal rough surface; S2, activation: the shell treated in S1 is activated by immersion in an acid; S3, pre-plating nickel: the shell treated in S2 is pre-plated in a pre-plating nickel solution; and S4, soft nickel electroplating: nickel plating is performed in a nickel plating system. By performing pretreatment before conventional electroplating, a dense nickel layer with strong deep plating capacity is plated, and the subsequent welding blistering problem is effectively solved.

The application provides a soft gold electroplating impurity treatment method and a soft gold electroplating process, which comprises the following steps: performing activated carbon treatment on nickel electroplating solution in a nickel tank; installing a first electrolytic plate and a first filter element in the nickel tank; removing the first electrolytic plate and the first filter element after a first current is applied to a rectifier for a first duration; installing a second electrolytic plate and a second filter element; removing the second electrolytic plate and the second filter element after a second current is applied to the rectifier for a second duration, wherein the second current is greater than the first current, and the second duration is less than the first duration. According to the technical scheme of the embodiment, impurities can be filtered through activated carbon treatment, long-time electrolytic adsorption of impurities can be performed by using the characteristics that a small current has a good gathering effect, short-time electrolytic adsorption of residual impurities can be performed by using the characteristics that a large current has a strong adsorption capacity, impurities in the nickel tank can be effectively reduced, the composition parameters of the soft gold can be optimized, and the yield of the substrate can be improved.

Nickel electroplating compositions containing thiourethanes deposit rough nickel on substrates. The rough nickel can be electroplated over wide current density ranges. The rough nickel deposits enable improved adhesion to other metal layers in contrast to many conventional nickel deposits.

The application discloses a magnesium alloy fluoridation plating solution and relates to the technical field of fluoridation plating solutions.The magnesium alloy fluoridation plating solution comprises the following components in mass fractions: 4-8 parts of nickel salt, 10-20 parts of a complexing agent, 1-5 parts of a fluoride, 5-12 parts of a reducing agent, 0.05-0.1 parts of a stabilizing agent, 0.5-1 parts of a promoting agent and 2-6 parts of a composite wetting agent.The magnesium alloy fluoridation plating solution can realize chemical nickel plating on a magnesium alloy substrate, and after nickel plating, electroplating nickel or subsequent surface treatment such as silver plating and gold plating can be carried out, and there is no problem of binding force, and after nickel plating, the magnesium alloy substrate is not corroded and oxidized on the surface, and the technical problem of nickel plating on the magnesium alloy substrate is effectively solved; the promoting agent is an alkyl compound of thiophene pyrrole carboxylic acid, and the coverage effect of nickel on the magnesium alloy is achieved; the composite wetting agent aims to improve the protection of the substrate at the bottom of the plating layer; the wetting agent can protect the plating layer in advance through adsorption, and the corrosion of water molecules and nickel ions is inhibited.

The invention discloses a method for extracting and separating nickel from a nickel electroplating sludge sulfuric acid leaching solution, which comprises the following steps: carrying out cross-flow extraction on a mixed organic phase and the nickel electroplating sludge sulfuric acid leaching solution to obtain an iron-nickel-cobalt-magnesium-copper-aluminum loaded organic phase; carrying out cross-flow washing on cobalt, magnesium, copper and aluminum in the iron-nickel-cobalt-copper-aluminum loaded organic phase by adopting sulfuric acid to obtain an iron-nickel organic phase; performing cross-flow reverse extraction on nickel in the iron-nickel organic phase by using hydrochloric acid to obtain a nickel solution and an iron organic phase; and the iron organic phase is subjected to cross-flow reverse extraction by oxalic acid, is fully washed by deionized water, and is returned for recycling. According to the method, efficient extraction separation of main metal nickel and multiple coexisting impurity metal ions in the nickel electroplating sludge sulfuric acid leaching solution can be achieved, operation is easy, and the separation efficiency is high.

The invention discloses a deep hole electroplating nickel-plating solution and a nickel-plating process thereof, and relates to the field of electroplating. The nickel plating solution for deep hole electroplating comprises a water-soluble nickel salt, a complexing agent, a deep hole agent, polyethylene glycol, butynediol dipropoxy ether, a water-soluble conducting salt, dibenzenesulfonimide and water, wherein the complexing agent comprises glycine / aminopropionic acid, sulfamate, malic acid, etidronic acid and sodium citrate. According to the deep hole electroplating nickel-plating solution, nickel ions in a system can be stabilized, the reduction deposition efficiency of nickel is controlled, the nickel deposition process is stable and controllable, meanwhile, the penetration and dispersion capacity of the electroplating nickel-plating solution to a deep hole area is high, a zinc alloy substrate can evenly plate deep holes with the depth being 1 cm or above, and the electroplating quality of the deep holes is improved. Therefore, fine, uniform and compact nickel layers can be stably deposited inside and outside deep holes of the zinc alloy substrate, and the corrosion resistance can be improved.

The present invention provides a method for preparing a solar cell with local passivation contact and a solar cell, and specifically relates to the technical field of solar cell preparation. The method for preparing a solar cell with local passivation contact comprises the following steps: immersing a silicon substrate with patterned grooves in a nickel electroplating solution, forming a nickel metal layer by segmented current electroplating, and finally forming a metal electrode to obtain a solar cell. The present invention controls the growth process of the nickel metal layer by segmented current electroplating, first generating dense and refined nickel grains, which are discontinuously and evenly distributed; then electroplating a silicon oxide layer in the area without nickel grains, thereby reducing the direct contact between the subsequently generated nickel metal layer and silicon, thereby reducing the reverse saturation current J0; finally, generating a complete nickel metal film layer, completing the preparation of the nickel metal layer, and realizing local passivation contact between the metal electrode and the silicon substrate.

The present invention belongs to the field of electroplating wastewater treatment technology, and in particular, is a nickel electroplating wastewater treatment device with sludge removal. In view of the fact that electroplating sludge is easily mixed with the upper layer of electroplating wastewater during cleaning, thereby reducing the chemical precipitation effect of the electroplating wastewater, the following scheme is proposed, including a treatment box, the bottom of which is fixedly connected to a second motor, and the output shaft of the second motor is connected to a screw through a coupling, the top of the screw is fixedly connected to a limit plate, the outer wall of the screw is provided with a partition plate, and the outer wall of the partition plate is in contact with the inner wall of the treatment box, and the top of the partition plate is provided with two mounting openings. The nickel electroplating wastewater treatment device with sludge removal disclosed by the present invention can separate the electroplating sludge during the treatment of the electroplating wastewater to avoid mixing of the electroplating sludge with the upper layer of electroplating wastewater during cleaning, thereby improving the chemical precipitation effect of the electroplating wastewater and improving the treatment efficiency of the electroplating wastewater.

The invention discloses a crown spring nickel plating method, and belongs to the technical field of crown spring nickel plating, and the crown spring nickel plating method comprises the following steps: S1, putting a to-be-plated part and a plating accompanying object steel ball into a roller together, then putting into a pure water tank for cleaning, then putting into an alkaline degreasing tank for ultrasonic cleaning, and finally putting into the pure water tank for cleaning; s2, putting the roller into a sulfuric acid concentration activation tank; s3, the roller is put into an electroplating nickel tank to be electroplated; s4, the roller electroplated with the bottom nickel is taken out and put into a pure water tank to be cleaned; s5, the roller in the previous step is put into a sulfuric acid concentration activation tank to be subjected to activation treatment, and nickel plating in the next step is facilitated; s6, putting the roller in the previous step into an electroplating semi-bright nickel bath for electroplating, wherein the thickness of a nickel layer is 7-11 microns at the moment; and S7, the roller is put into pure water to be cleaned for 28-32 S, then the roller is put into pure water to be subjected to ultrasonic cleaning for 58-65 S, after ultrasonic cleaning, the part is taken out to be cleaned, oil dirt is removed, and after blow-drying, the part is put into a drying oven to be dried at the temperature of 75-85 DEG C.

A solid oxide fuel cell (SOFC) system includes high thermal conductivity materials such as copper to increase thermal energy transfer by thermal conduction. The copper is protected from oxidation by nickel electroplating and protected from thermal damage by providing oxidation resistant liners inside combustion chambers.

The device comprises an OT aluminum terminal and a copper ring, one end of the OT aluminum terminal and the copper ring are fused into a whole through an ultrasonic welding machine to form a copper / aluminum composite crimping terminal, and a nickel electroplating layer is arranged on the surface of the copper ring; the other end of the OT aluminum terminal is connected with an aluminum wire in a crimping mode through a servo crimping machine to form a conductive carrier, a PVC adhesive tape is wound outside the conductive carrier, and a double-wall heat shrink tube is assembled outside the PVC adhesive tape. According to the aluminum-attached copper terminal crimping aluminum wire device and process provided by the invention, the aluminum terminal and the copper ring are subjected to ultrasonic welding to realize a copper-to-aluminum structure, and the aluminum wire crimping is realized by adopting ultrasonic welding and physical crimping modes, so that the product cost is reduced while the protection requirement is met; the problems of electrochemical corrosion, aluminum thermal expansion, loosening and failure, oxidability, creep property, stress relaxation and the like caused by copper and aluminum electric connection are solved, and the method can be applied to the field of large-current wire electric connection of whole vehicle high-voltage wiring harnesses and unmanned aerial vehicle high-voltage wiring harnesses.