216 results about "Electroplated nickel" patented technology

The invention relates to the technical field of semi-gold-nickel plating and processing, in particular to a floating connector terminal continuous semi-gold-nickel plating process which comprises the following preparation steps: S1, a floating connector terminal to be electroplated is put into degreasing fluid for degreasing treatment, and then the degreased terminal is put into activating fluid for activating treatment; s2, nickel electroplating is conducted on the activated floating connector terminal through a nickel plating solution, a nickel cake serves as an anode, the pH value of the nickel plating solution is controlled to be 3.5-5.5 through weak acid in the electroplating process, the electroplating current is controlled to be 0.4-0.8 A / dm < 2 >, the temperature is controlled to be 50-60 DEG C, cleaning is conducted, and the nickel-plated floating connector terminal is obtained; and S3, the nickel-plated floating connector terminal is put into the gold plating solution to be electroplated, the electroplating temperature is 40-50 DEG C, the current density is 0.1-2 A / dm, a finished product is obtained, and the floating connector terminal can still keep high conductivity, low contact resistance, high abrasion resistance and high corrosion resistance under the complex environments of high temperature, vibration, salt mist and the like through the technology.

The present invention discloses a composite electroplating nickel-cobalt cathode hydrogen evolution catalyst and a preparation method thereof, wherein a double-sided sandblasted nickel mesh degreased with alkali solution is pickled and washed with water, then immersed in electrolytes of different concentrations, electroplated for a period of time under a three-electrode system, and after the electroplating is completed, it is washed three times with deionized water and calcined at high temperature to obtain a hydrogen evolution electrode catalyst with multiple active sites. Through the above manner, the present invention discloses a composite electroplating nickel-cobalt cathode hydrogen evolution catalyst and a preparation method thereof, and adopts a composite electroplating nickel-cobalt alloy method to prepare an electrocatalyst material with multiple active sites, which can not only effectively reduce production costs, but also can utilize the nickel-cobalt electrolyte to play a pore-forming role to increase the specific surface area of ​​the catalyst material, thereby increasing the active point of the catalyst and improving the catalytic activity of the catalyst.

The invention discloses a TOPCon electroplated cell and an edge passivation method for reducing cutting damage of the TOPCon electroplated cell, and relates to the technical field of solar cells. The method comprises the following steps: growing a layer of aluminum oxide film on the surfaces and edges of a plurality of small battery pieces formed by laser slicing, and then sintering, annealing and carrying out light injection to obtain passivated small battery pieces; and coating the edge of the passivated small battery piece with a layer of UV glue, and then carrying out ultraviolet radiation, acid pickling, water washing and drying to obtain the edge-passivated small battery piece. Edge passivation is completed before nickel, copper and tin are electroplated to manufacture the grid line, the effect of repairing cutting damage is achieved, a high-temperature process is not needed subsequently, the adhesive force of the electroplated grid line can be guaranteed, and the efficiency of the cut battery is improved.

The invention discloses a vacuum diffusion bonding method for a nickel-based superalloy and MoNbTaW series refractory alloy, and aims to solve the problem that the quality of a welding joint is affected due to the fact that the welding joint of the nickel-based superalloy and the MoNbTaW series refractory alloy can generate a Cr-rich brittle phase. The vacuum diffusion method comprises the following steps: 1, polishing the nickel-based high-temperature alloy and the MoNbTaW series refractory alloy; secondly, nickel sulfate, nickel chloride, nickel borate, sulfuric acid, lauryl sodium sulfate and water are mixed, an electroplating solution is obtained, the nickel-based superalloy is electroplated, an electroplated nickel grain layer is obtained, and the MoNbTaW series refractory alloy and the nickel-based superalloy are jointed; thirdly, the to-be-welded part is placed in a vacuum diffusion furnace; and 4, performing vacuum diffusion bonding. According to the method, the electronickelling grain layer is used, connection is conducted at the relatively low temperature and the relatively low pressure, only interdiffusion of the electronickelling grain layer and refractory alloy in a small range exists on a connector interface, a Cr-rich brittle phase is not generated, and cracks are prevented from being generated in the connector.

The preparation method comprises the following steps: preparing a stainless steel plate, grinding and polishing, and forming a mirror surface effect on the surface of the stainless steel plate; electroplating nickel on the stainless steel plate to form a nickel layer; photoetching a holographic image on the nickel layer to enable the stainless steel plate to form a mother set; coating the mother set with UV photosensitive glue, and then covering the mother set with a PET film; drying, transferring the holographic image on the nickel layer to the PET film, forming an image which is the same as the holographic image on the nickel layer on the PET film, and stripping the PET film transferred with the image from the mother set to obtain a sub-set; coating UV photosensitive glue on the sub-plate, then laying a sheet material, and after drying, transferring an image on the PET film onto the sheet material to form an image which is the same as that on the PET film on the sheet material; and stripping the sheet with the transferred image from the sub-plate, and cutting the sheet to obtain the finished vamp material. The method does not need printing and adding dye, is more environment-friendly, and can be directly applied to shoes.

The invention relates to an auxiliary cathode design for preparing a uniform nickel-phosphorus alloy resistive film by electroplating, which aims at the edge polarization effect generated by electroplating the nickel-phosphorus alloy resistive film, changes the distribution of electric field lines by adding an auxiliary cathode, and improves the uniformity of a plating layer by adjusting the width of a copper sheet, the front-back distance and the like. And the edge polarization effect caused by electroplating can be effectively solved. The method is suitable for aerospace, electronic circuit and other industries.

The invention discloses a profiling anode tool for electronickelling and a welding manufacturing method of the profiling anode tool, and belongs to the technical field of aerospace. The profiling anode tool for nickel plating is manufactured through the welding technology, in order to avoid the influence of the tool on a nickel plating layer of a product in the electroplating process, a tool body structure is made of a pure nickel plate, and meanwhile the portion, connected with an electroplating anode, of the tool body structure is made of a pure copper plate so that good conductivity can be guaranteed; therefore, the profiling anode tool relates to welding of homogeneous and heterogeneous materials of the nickel plate and the copper plate. At present, the structure mainly adopts an argon tungsten-arc welding process, copper and nickel can form a low-melting-point eutectic phase with impurity elements during welding, pores and cracks are easily generated, a weld joint is easily invalid under the action of large restraint stress, and the surface of the weld joint is easily oxidized. In order to reduce the problems, the welding process is controlled through surface and groove treatment, reasonable selection of welding wires, welding parameters, gas protection and the like, and the reliability of the welding quality is guaranteed. The method has the characteristics of high practicability and wide application range.

The invention provides a gradient composite graphene electrolysis electrode plate and an in-situ preparation method thereof. The electrode plate comprises a metal conductive base material (such as titanium alloy), a porous ceramic skeleton layer (Al2O3-40% ZrO2, the porosity of which is 30 + / -5%), a chemical copper plating layer for filling pores, an electroplated nickel-ruthenium alloy catalytic layer (Ni: Ru = 9: 1) and 3-5 graphene functional layers (ID / IG is less than or equal to 0.08) grown in situ, wherein the porous ceramic skeleton layer (Al2O3-40% ZrO2) is laser-cladded on the surface of the porous ceramic skeleton layer (Al2O3-40% ZrO2). The preparation method comprises the following steps: performing laser cladding on a ceramic skeleton, wherein the power density is 300-500W / mm < 2 >, and sintering at 1600 DEG C to form metallurgical bonding; gradient plating: electroless copper plating (containing nano-diamond enhancement) and pulse electroplating of Ni Ru (duty ratio is 1: 5); and performing directional CVD growth: after reducing the catalyst layer by H2 at 1050 DEG C, introducing CH4 / H2 (the volume ratio is 1: 4) in a pulse manner, and realizing full coverage of the inner wall of the mesh by vortex air intake. The technical effects are as follows: (1) the overpotential of chlorine evolution in saturated salt water at 80 DEG C is as low as 268mV (1A / cm < 2 >); (2) strong acid environment service life gt; the time is 100 thousand hours (12 times that of the national standard); (3) the production cost is lt; and 620 / m < 2 > (90% lower than that of a traditional ruthenium-iridium coating). The problems of graphene transfer damage and special-shaped electrode covering are solved.

The utility model discloses an electroplating nickel sulfate recovery processing device, which relates to the technical field of electroplating liquid recovery and comprises a processing barrel, a partition plate is fixedly arranged in the middle of the inner side of the processing barrel, a fixing sleeve is fixedly arranged in the middle of the partition plate, and an inserting rod is inserted into the fixing sleeve. The partition plate is arranged in the treatment barrel, the interior of the treatment barrel can be divided into two parts through the partition plate, the two parts can achieve absorption of nickel ions by resin and regeneration and reduction of the resin respectively, the fixing sleeve is arranged in the middle of the partition plate, and the rotatable inserting rod is arranged in the fixing sleeve in an inserted mode. A storage box is arranged at the top end of the insertion rod through a supporting plate and a movable rod, resin can be stored in the storage box, and switching of the resin between the nickel ion absorption state and the regeneration reduction state can be achieved by switching the position of the storage box in the treatment barrel, so that continuous recovery treatment of the device on electroplated nickel sulfate can be achieved.

The invention relates to the field of electroplating of threaded couplings, in particular to an electroplating nickel-tungsten alloy process for a threaded coupling. The nickel-tungsten alloy electroplating technology for the threaded coupling comprises the following steps that S1, activating treatment is conducted; s2, nickel pre-plating treatment; s3, copper plating treatment; s4, nickel-tungsten alloy plating treatment; s5, tinned copper treatment; and S6, passivating treatment is conducted. According to the composite electroplating technology for the threaded coupling, the abrasion resistance and corrosion resistance of the threaded part are improved through multi-stage coating superposition. Bottom-layer metal nickel is formed through nickel pre-plating treatment, and the binding force of a base body and a plating layer is enhanced; the copper plating layer can improve the ductility of the plating layer and reduce internal stress; the nickel-tungsten alloy layer improves the hardness and high-temperature stability of the plating layer; the tinned copper layer further prevents extrusion deformation of the threads, reduces the friction coefficient and prevents thread gluing; a compact oxidation film is formed through passivating treatment, and the color change phenomenon on the surface is prevented. And the service life of the coupling under the working conditions of high pressure and high friction is obviously prolonged.

The application discloses a brazing method of magnesium / aluminum dissimilar metals, which comprises the following steps: pre-electroplating nickel on a magnesium alloy base material, connecting the prepared magnesium alloy with a nickel plating layer and an aluminum alloy by using an ultrasonic-assisted brazing method, and using a brazing filler metal SAC305. The method prevents the generation of Mg-Sn intermetallic compounds (IMCs) in the process of magnesium / aluminum dissimilar metal low-temperature brazing using a Sn-based brazing filler metal. After welding, the position of the original nickel plating layer is changed into a Cu-Ni solid solution, and no large block-shaped Mg2Sn IMC is found in the brazing seam. Compared with a joint without a plating layer, the shear strength of the magnesium / aluminum dissimilar metal brazing joint based on the nickel plating layer is greatly improved, and the joint strength is strengthened by the diffusion of the nickel element into the brazing seam in the welding process. In addition, the corrosion resistance of the magnesium alloy can be improved by plating nickel on the surface of the magnesium alloy, and the service life of the magnesium / aluminum component is prolonged.

The invention discloses a method for manufacturing a roller female die, which comprises the following steps of: providing a front roller which comprises a cylinder and a photoresist layer formed on the outer surface of the cylinder; a sputtering type nickel layer is formed on the photoresist layer towards the front roller, and the sputtering type nickel layer covers the photoresist layer and is in a circular tube shape; forming an electroplated nickel layer on the sputtering type nickel layer formed on the front roller through electroplating, wherein the electroplated nickel layer is fully distributed on the sputtering type nickel layer in a gapless manner so as to form a roller female die together with the sputtering type nickel layer; and separating the roller female die from the front roller. Therefore, according to the manufacturing method of the roller female die, a silver plating layer formed through a silver mirror reaction in the prior art is omitted through the sputtering type nickel layer formed in the nickel sputtering step, and then related problems derived from the silver plating layer are effectively avoided.

A layered structure includes a silicon-based substrate comprising a substrate surface; a titanium-copper seed layer arranged on the substrate surface, wherein the titanium-copper seed layer comprises a titanium layer and a copper layer, wherein the titanium layer is arranged on the substrate surface such that covalent bonds are formed between the titanium layer and silicon of the silicon-based substrate, and wherein the copper layer is arranged directly on the titanium layer, such that the titanium layer is arranged between the substrate surface and the copper layer; and a nickel-iron plating layer arranged directly on the copper layer of the titanium-copper seed layer such that the titanium-copper seed layer is arranged between the silicon-based substrate and the nickel-iron plating layer.

The invention relates to a method for continuously producing an electroplated nickel composite coating steel strip at a high speed, and belongs to the technical field of electroplating. The method comprises the following steps: sequentially carrying out chemical alkali washing, first scrubbing, electrolytic alkali washing, second scrubbing, first rinsing, chemical acid washing and second rinsing on a steel strip; the steel strip subjected to second rinsing is subjected to nickel pre-plating treatment in a first nickel electroplating solution; performing third rinsing on the steel belt subjected to nickel pre-plating treatment; the steel strip subjected to third rinsing is subjected to semi-bright nickel plating treatment in a second nickel electroplating solution; and the steel strip subjected to semi-bright nickel plating treatment is subjected to bright nickel plating treatment in a third nickel electroplating solution, and the nickel electroplating composite coating steel strip is obtained. Through the methods of optimizing the technological process, optimizing the components of the electroplating solution, improving the structure of the titanium basket and the like, high-speed, high-efficiency, high-quality and environment-friendly production of the electroplated nickel steel strip is effectively realized.

The invention discloses an energy-saving and efficient electroplating nickel-copper-containing wastewater treatment device, relates to the technical field of wastewater treatment, and aims to solve the problem that the adsorption efficiency is influenced by local loss caused by non-uniform particle size distribution of resin in a resin adsorption process. On one hand, automatic compaction of resin particles under the pressure difference is realized by the compaction moving assemblies which are arranged in the adsorption tank body and the exchange column in parallel, and the purpose of adsorbing and purifying the electroplating nickel-copper-containing wastewater and forming tight contact between the resin particles and achieving uniform particle size distribution is achieved; the resin particles can complete adsorption replacement from the whole to local concentration in the adsorption treatment process, and continuous collection and supplement of the invalid resin particles are realized; and under the combination of the two, the resin particles are automatically replaced and supplemented under the non-stop state, so that the sealing operation reliability in the electroplating nickel-copper-containing wastewater treatment process is achieved, and the adsorption efficiency is improved.

The present application belongs to the technical field of cold spraying of composite coating, and provides a cold spraying method for electroplating nickel-coated micro-sized tungsten carbide particle reinforced aluminum-based composite coating. First, a nickel layer is electroplated on the surface of 1-3 mu small-sized tungsten carbide particles in a constant-temperature water bath, to obtain nickel-coated tungsten carbide particles. Then, the electroplated nickel-coated tungsten carbide particles and aluminum powder are subjected to low-energy ball milling by using a ball mill, so that the electroplated nickel-coated tungsten carbide particles are uniformly distributed in the aluminum powder, to obtain a mixed powder. By using 1-3 mu micro-sized tungsten carbide particles as raw materials, compared with large-sized tungsten carbide particles, the small-sized tungsten carbide particles can obtain greater acceleration in the cold spraying process, and by plating nickel on the surface, the loss of small-sized tungsten carbide particles in the cold spraying process can be reduced, and the arc-shaped impact effect generated when reaching the surface of the substrate can be reduced, so that the small-sized tungsten carbide particles are more easily retained in the coating.

The present invention relates to a zinc-based alloy wire suitable for arc spraying and a preparation method thereof. In a protective atmosphere, zinc and aluminum are melted in proportion to form a molten metal, and a zinc-aluminum alloy wire is obtained through processes such as cooling, aging treatment, and drawing. After surface treatment, a layer of pure copper and pure nickel is electroplated on the surface of the wire in succession, and finally a nickel-plated arc sprayed zinc-based alloy wire is obtained. The present invention electroplates nickel on the surface of the zinc-aluminum alloy wire through a certain process. After multiple studies and comparative verifications, the prepared alloy wire has a dense structure and a strong coating bonding force, which can meet the conditions for arc spraying. Compared with similar alloy wires, the alloy wire preparation cost of the present invention is greatly reduced, and the corrosion resistance of the arc spray coating is significantly improved.

The invention relates to a method for electroplating a nickel-zinc alloy on the surface of uranium metal fuel. The method comprises the following steps: removing an oxide layer on the surface of the uranium metal fuel; the uranium metal fuel with the oxide layer removed is placed in a ferric trichloride solution to be etched and activated; and the etched and activated uranium metal fuel serves as a cathode and is placed in an electrolyte containing zinc ions and nickel ions for electroplating, and the nickel-zinc alloy coating is obtained on the surface of the uranium metal fuel. The nickel-zinc alloy coating obtained on the surface of the uranium metal fuel through the method has the advantages of being bright in appearance, low in toxicity, small in hydrogen embrittlement, good in toughness, good in weldability and the like, the surface protection performance and corrosion resistance of the uranium metal fuel are remarkably improved, then the service life of the uranium metal fuel is prolonged, and the safety of the uranium metal fuel is improved; the uranium metal fuel is suitable for being stored and used in severe industrial atmosphere and harsh marine environment, and the method has the advantages of simplified preparation process, high production efficiency and low production cost, so that further development of the uranium metal fuel in the fields of national defense and nuclear energy is promoted.

The invention belongs to the technical field of printed circuit boards, and discloses a printed circuit board manufacturing method and a printed circuit board, and the method comprises the steps: covering the surface of a plated circuit board with a positive dry film, and forming a circuit board with the positive dry film; wherein the positive dry film is provided with a pattern to be plated with nickel and gold, and the pattern to be plated with nickel and gold is a pattern which coincides with a pre-designed circuit pattern and is compensated and pre-enlarged; performing exposure, development and micro-etching treatment on the circuit board with the positive dry film to form a circuit board with a concave position to be plated with nickel and gold; carrying out nickel and gold electroplating treatment on the circuit board with the concave position to be plated with nickel and gold, and removing a film to obtain a circuit board with a nickel and gold plating layer; covering a negative dry film on the surface of the circuit board with the nickel-gold plating layer to form a circuit board with a negative dry film; performing exposure, development, acid etching and film stripping on the circuit board with the negative dry film to obtain a printed circuit board; according to the invention, the quality and reliability of the printed circuit board can be remarkably improved while the nickel-gold saving ratio is effectively improved.

The invention provides a zero-discharge treatment process for nickel electroplating wastewater. The zero-discharge treatment process comprises the following steps: S1, carrying out physicochemical treatment on the nickel electroplating wastewater to enable metal ions to form precipitates; s2, removing slag through a fine filtration system; s3, performing reverse osmosis treatment in a membrane treatment system, and recovering clear liquid; s4, concentrated liquor obtained after reverse osmosis treatment enters an electrodialysis system to be concentrated; and S5, carrying out evaporation curing treatment on the concentrated solution to realize zero discharge of wastewater. According to the zero-discharge treatment process for the electronickelling wastewater, the treated clear liquid can be recycled, the discharged waste is in a solid state, and zero discharge of the electronickelling wastewater is realized.

The utility model discloses a kind of electroplating nickel anode copper bar hydraulic pressure quick breaking locking device, it is related to power supply locking equipment technical field.The utility model includes clamp, clamp outside is equipped with clamping frame, two titanium blue copper bars are installed between clamping frame one end and clamp, and two rectifier copper bars are installed between another end and clamp, clamp one end is equipped with jack locking part, jack locking part is used to control the locking state of rectifier copper bar, titanium blue copper bar by clamp.The utility model is installed clamp between two groups of rectifier copper bar and titanium blue copper bar, clamping frame is installed outside in clamp middle part, lockable jack locking part is installed in clamp one end, the opening and closing of clamp is controlled by jack locking part, in turn, the clamping state of two groups of copper bar is controlled, artificial installation bolt is avoided, and electroplating efficiency is indirectly improved.

The invention provides a zirconium alloy nickel plating method based on a multi-element gradient transition layer and a nickel-plated zirconium alloy workpiece, and relates to the technical field of surface treatment.The method comprises the steps that the zirconium alloy workpiece is pretreated; the pretreated zirconium alloy workpiece is immersed in fused salt electroplating liquid, stepped electro-deposition and vacuum annealing treatment are conducted on the pretreated zirconium alloy workpiece, a multi-element gradient transition layer with components changing from zirconium-rich nickel alloy to nickel-rich zirconium alloy in a gradient mode is formed on the surface of the zirconium alloy workpiece, and an intermediate zirconium alloy workpiece is generated; and the intermediate zirconium alloy workpiece is subjected to activating treatment, the intermediate zirconium alloy workpiece subjected to activating treatment is placed in an electroplating nickel solution to be subjected to electroplating nickel treatment, and the nickel plating layer is obtained. The bonding performance of the surface nickel plating layer is improved.

Rolling guide supporting devices are arranged on the outer walls of the periphery of the upper end of a nickel plating tank, the upper ends of the rolling guide supporting devices are fixedly connected with the bottom edge of the corresponding side of a swinging frame, and supporting bases are fixed to the middles of the upper end faces of the two wide sides of the swinging frame. The end part of the hanging rod for hanging the electroplated workpiece is matched with the supporting seat at the corresponding end; a swing driving device is arranged on one wide edge side of the nickel plating tank, an action part of the swing driving device is connected with the corresponding side of the swing frame, and the swing driving device drives the swing frame and the electroplated workpieces on the swing frame to swing in a reciprocating mode in the length direction, the width direction and the height direction of the nickel plating tank under supporting of the rolling guide supporting device. According to the invention, the multi-direction swinging motion of the swinging frame is realized to optimize the flowing state of the plating solution, the purposes of efficient separation of bubbles on electroplated workpieces and uniform deposition of plating layers are achieved, the workpiece loading flexibility and the production efficiency are improved, and the defects of non-uniform permeation of the plating solution and residual bubbles in the nickel electroplating process are overcome.

The utility model discloses a thick copper wire bonding structure which comprises a substrate, the substrate is arranged at the bottommost layer, four groups of bonding pads are arranged on the substrate, the bonding pads are distributed on two sides of the substrate in pairs, the substrate is sequentially provided with silver paste, an insulating layer and a dielectric layer from bottom to top, four groups of chemical gold plating are arranged on the dielectric layer, and the bonding pads are arranged on the substrate. A thick copper wire is welded on the bonding pad, and the other end of the thick copper wire is welded on the electroless plating gold. By arranging the dielectric layer, the side wall of the thick copper wire is well protected from being affected by the environment and attacked by other substances, good product performance is ensured, original supplied materials are replaced by electro-coppering and electro-nickeling, needed Au is reduced in a large area, cost is saved, and production efficiency is improved. And as the Cu side wall of the RDL is easily influenced by the environment and other substances, the performance of the product is reduced, and the reliability faces the challenge of failure.

This invention relates to a nickel-plated steel sheet with excellent corrosion resistance for battery casings and a method for manufacturing the same. In one specific embodiment, the nickel-plated steel sheet comprises: a base steel sheet; a nickel plating layer formed on at least one surface of the base steel sheet; and a nickel-iron diffusion layer formed between the base steel sheet and the nickel plating layer. The nickel plating layer and the nickel-iron (Ni-Fe) diffusion layer are formed by heat treatment after forming an electroplated nickel layer on the base steel sheet and a chemically plated nickel layer on at least a portion of the surface of the electroplated nickel layer. The nickel plating layer contains one or more vacancy elements selected from phosphorus (P), boron (B), tungsten (W), cobalt (Co), molybdenum (Mo), and copper (Cu) on its surface.

A method of producing a flexible nickel phosphorus coating on a substrate. The substrate includes a dielectric material having a copper layer thereon. The method comprises the steps of: (1) activating the substrate with a palladium activation solution to catalyze the substrate, and 2) contacting the activated substrate with an electroless nickel phosphorus plating bath comprising: (i) a source of nickel ions; (ii) a hypophosphite ion source; (iii) at least one metal complexing agent; and (iv) an organic flexible additive. The nickel-phosphorus plating layer deposited on the substrate shows a columnar grain structure.

The invention discloses a nickel-zinc-containing waste liquid environment-friendly treatment process, which belongs to the technical field of electroplating waste liquid treatment, and comprises the following steps: collecting electroplating nickel-zinc-containing waste liquid, and adjusting the pH value to 6-9 to obtain pretreated nickel-zinc-containing waste liquid; adding modified charcoal and a hydrogen peroxide solution into the pretreated nickel-zinc-containing waste liquid, and stirring to react for 1-2 hours under the irradiation of an ultraviolet lamp, so as to obtain an oxidized nickel-zinc-containing waste liquid after the reaction is finished; the oxidized waste liquid containing nickel and zinc is introduced into a reduction pool, an unreacted hydrogen peroxide solution is reduced, a precipitator is added, stirring is conducted for 10-20 min, then a flocculant is added, stirring is conducted for 30-60 min, standing is conducted for 2 h, solid-liquid separation is conducted, solid sludge and filtrate are obtained, and the filtrate is to-be-discharged water; according to the invention, the modified biochar realizes synergistic interaction through an activation-complex breaking-capture mechanism; the multi-stage collaborative strategy effectively solves the problem of poor treatment effect of the nickel-zinc-containing waste liquid in the traditional Fenton process, and an innovative solution is provided for treatment of the nickel-zinc-containing waste liquid.

The utility model discloses a high temperature resistant diamond wire equipment electro-nickel plating bead cleaning device which comprises a cleaning frame and a spiral stirring barrel arranged above the cleaning frame, the top of the cleaning frame is fixedly connected with a fixing frame, one side of an inner cavity of the fixing frame is fixedly connected with a driving motor speed reducer, and the other side of the inner cavity of the fixing frame is fixedly connected with a driving motor. The utility model relates to the technical field of electronickelling bead cleaning. According to the nickel electroplating bead cleaning device for the high-temperature-resistant diamond wire equipment, a driving motor speed reducer drives a rotating rod to rotate, the rotating rod drives a spiral stirring barrel to rotate through a first gear and a second gear, the spiral stirring barrel can conduct rolling cleaning on internal nickel electroplating beads, and meanwhile water is pumped into a plurality of cleaning pipes through a circulating water spraying pump; the multiple water spraying holes in the multiple cleaning pipes spray water downwards to clean the electroplated nickel beads, so that the electroplated nickel beads can be conveniently cleaned, manual cleaning is not needed, use is more convenient, and the cleaning efficiency of the electroplated nickel beads is improved.

The utility model discloses metal electronickelling drying equipment which comprises a drying box body used for metal electronickelling, an inlet and an outlet are formed in the two sides of the drying box body respectively, a conveying assembly is installed in the drying box body, and a console is installed on one side of the drying box body. An air inlet is formed in the top of the drying box body, a fan is installed on the air inlet, the bottom of the air inlet is connected with an air channel assembly, the tail of the air channel assembly is connected with a heat exchanger, and turbulent flow fans are installed on the upper side and the lower side of an inlet in one side of the drying box body. According to the utility model, the air duct assembly adopts the spiral air duct, so that hot air can be uniformly blown to a metal electroplated part on the conveying assembly from multiple directions, and each part of the electroplated part can be fully and uniformly dried; the turbulent flow fan can enable the hot air entering the drying box body to generate turbulent flow, so that the convective heat exchange effect between the hot air and the surface of the plated part is further enhanced; the heat exchanger can recycle waste heat of hot air exhausted in the drying process.

The present disclosure relates to a nickel plated steel sheet for a battery case having excellent corrosion resistance and a method for manufacturing the same. In one embodiment, the nickel plated steel sheet comprises: a base steel sheet; a nickel plating layer formed on one or more surfaces of the base steel sheet; and a nickel-iron (Ni—Fe) diffusion layer formed between the base steel sheet and the nickel plating layer; wherein the nickel plating layer and the nickel-iron (Ni—Fe) diffusion layer are formed by forming an electro-nickel plating layer on the base steel sheet and an electroless nickel plating layer on at least a portion of the surface of the electro-nickel plating layer, followed by heat treatment, and the nickel plating layer includes one or more co-deposited elements selected from phosphorus (P), boron (B), tungsten (W), cobalt (Co), molybdenum (Mo), and copper (Cu) on its surface.