81 results about "Electrogalvanization" patented technology

The invention discloses a porous copper-graphene composite current collector for a lithium battery, and also discloses a preparation method of the composite current collector, and the preparation method comprises the following steps: preparing an electroplating copper electrolyte, adding graphene into the electroplating copper electrolyte, and uniformly dispersing the graphene to obtain an electroplating copper-graphene electrolyte; placing a copper foil in the electrocoppering-graphene electrolyte for electroplating treatment to obtain a Cu-Gr foil of which the surface is uniformly coated with a copper-graphene composite layer; the Cu-Gr foil is placed in an electrogalvanizing electrolyte for electrogalvanizing treatment, on the basis of the copper-graphene composite layer, a zinc layer is coated, and the Cu-Gr / Zn foil of a double-layer structure is obtained; carrying out solution treatment on the Cu-Gr / Zn foil to obtain a porous copper precursor; and carrying out dealloying treatment on the porous copper precursor, and dissolving zinc in the porous copper precursor to obtain the porous copper-graphene composite current collector. The composite current collector has a cross-scale synergistic distribution pore structure, and the binding force between the graphene and the copper substrate is strong.

The invention provides a tungsten filament cold drawing surface pretreatment method, and relates to the technical field of diamond wire bus electroplating, the pretreatment method comprises the following steps: S1, providing a tungsten filament, and carrying out alkali washing and acid washing on the tungsten filament; s2, sequentially electroplating a nickel layer, a copper layer and a zinc layer on the acid-washed tungsten filament; s3, performing thermal diffusion on the tungsten filament subjected to zinc layer electroplating to obtain a tungsten filament with a copper-zinc alloy layer; and S4, the tungsten filament with the copper-zinc alloy layer is subjected to acid pickling, water washing and air drying, and the tungsten filament subjected to the pretreatment method can adapt to the cold drawing process.

A high-strength, high-ductility electrolytic zinc-coated steel sheet with excellent bending capacity and a method for its production are provided. The high-strength, high-ductility electrolytic zinc-coated steel sheet comprises an electrolytic zinc coating on the surface of a base steel sheet. The base steel sheet has a predetermined component composition and a steel microstructure in which the total area percentage of one or two of either martensite containing a carbide having an average particle size of 50 nm or less and bainite containing a carbide having an average particle size of 50 nm or less is 90% or more throughout the steel microstructure.the percentage of total area of ​​one or two of the martensite containing a carbide having an average particle size of 50 nm or less and the bainite containing a carbide having an average particle size of 50 nm or less is 80% or more in a region extending from the surface of the base steel sheet to a depth of 1 / 8 of the thickness of the base steel sheet, and the total perimeter of individual carbide particles having an average particle size of 50 nm or less in the martensite containing a carbide having an average particle size of 50 nm or less and the bainite containing a carbide having an average particle size of 50 nm or less present in the region is 50 µm / mm2 or more, in which the amount of diffusible hydrogen in the steel is 0.20 ppm by mass or less.

The invention relates to the technical field of bending devices, in particular to a multi-point synchronous bending device for an electro-galvanized steel plate center console framework and a using method.The multi-point synchronous bending device comprises a bottom plate and a driving assembly, a bending assembly is installed at the front end of the driving assembly, a positioning assembly is installed on the inner side of the bending assembly, a movable assembly is installed on the inner side of the positioning assembly, and a fixed assembly is installed at the upper end of the bottom plate; the bending assembly comprises a push plate, a first bending mold is fixedly connected to the front end of the push plate, a rail groove is formed in the inner side of the push plate, the movable assembly comprises a first spring, a transverse rod is fixedly connected to one side of the first spring, a rail block is fixedly connected to the top end of the transverse rod, a second bending mold is fixedly connected to the other side of the transverse rod, and the fixed assembly comprises a base. The device can accurately bend the middle and the two ends of a galvanized frame blank, prevents a plating layer from cracking and falling off due to stress stretching during bending, guarantees the bending stability, and ensures the structural strength and the use reliability of the electro-galvanized steel plate center console framework.

This invention belongs to the field of secondary utilization technology of metal resources, specifically relating to a method for treating waste liquid from electroplating zinc-nickel alloys. The method includes the following steps: S1, mixing the waste liquid from electroplating zinc-nickel alloys, oxygen, and a catalyst, and performing an oxidation reaction to obtain an intermediate liquid and nitrogen; the oxidation reaction temperature is ≥220℃; S2, adjusting the pH of the intermediate liquid to 13.0-13.5, performing a first filtration separation to obtain nickel hydroxide sludge and filtrate 1; S3, adjusting the pH of filtrate 1, performing a second filtration separation to obtain zinc hydroxide sludge and filtrate 2. This invention first degrades COD to obtain zinc and nickel ions; adjusting a specific pH value generates nickel hydroxide sludge, with zinc ions existing in the system as polyhydroxy zinc anions, achieving separation of nickel and zinc; further adjusting the pH separates zinc from the system as zinc hydroxide sludge precipitate. The operation is simple, with high separation efficiency and high purity.

The invention discloses a sectional type current self-adaptive control method and system for a bolt electrogalvanizing process, which are applied to a bolt electrogalvanizing production line and aim at optimizing the quality of a zinc coating through sectional type current self-adaptive control. The method comprises the following steps: acquiring a process parameter sequence in a bolt electrogalvanizing process, wherein the process parameter sequence comprises current intensity characteristics of each segmented electroplating bath and segmented electroplating time characteristics; calculating a current time matching degree according to the current intensity characteristics and the segmented electroplating time characteristics; determining a current adaptability score of the segmented electroplating process based on the current time matching degree; and when the current adaptability score is higher than a preset segmentation score threshold, adaptively adjusting the current parameter of each segmented electroplating bath according to the score deviation degree and a preset adjustment rule, and generating an optimized galvanization control result. Through sectional current control and self-adaptive adjustment, the thickness uniformity and the process stability of a zinc coating are ensured, the bolt electrogalvanizing quality is remarkably improved, and the method is suitable for industrial production requirements.

The utility model provides an air knife device for removing foreign matters at an inlet of an electro-galvanizing production line, which relates to the technical field of electro-galvanizing production and comprises two supports mounted at a steel structure in front of a tension roller of the electro-galvanizing production line, fixed bases are welded on the supports, and a removing device is mounted on the fixed bases on two sides; the removing device comprises a removing support and a nozzle. According to the air knife device for removing the foreign matters at the inlet of the electrogalvanizing production line, the fan-shaped nozzles are arranged above the strip steel, so that the foreign matters fall off from two sides after being purged, the cost is low, the installation is simple and convenient, a roller system is not damaged, the foreign matters of electrogalvanizing raw materials can be removed under the condition of ensuring continuous production of a unit, and the production efficiency is improved. And the unit operation efficiency, the production rate and the contract delivery rate are improved.

The invention belongs to the technical field of magnesium alloy surface treatment, and discloses a Zn and Al composite coating electroplating method suitable for a magnesium alloy, which comprises the following steps: step 1, zinc electro-deposition of the magnesium alloy; step 2, preparing electroplating aluminum ion liquid; 3, the magnesium alloy subjected to zinc electroplating is directly subjected to aluminum electroplating; step 4, cleaning; and 5, detecting the binding force. The technology of direct aluminum plating after magnesium alloy electrogalvanizing is adopted, the technology is simplified, the stability and controllability are high, the cost is low, the plating layer binding force is excellent, and bubbling, falling and even peeling are avoided after 200 DEG C-2h room temperature water quenching and a cross-grid test can be resisted. And meanwhile, successful deposition can be performed on the two magnesium alloys AZ31B and AZ91D, so that the process is less affected by a base material, and the process has a very good commercial application prospect.

The invention provides a preparation method for electroplating a Zn / Zr-Al composite coating on the surface of an aluminum alloy, and relates to the technical field of composite coatings. The composite coating structure comprises a zirconium-aluminum alloy coating and a zinc middle layer from outside to inside. The method comprises the following steps: firstly, inserting a pretreated aluminum alloy and a pretreated zinc sheet which serve as a cathode and an anode into a zinc ion electrolyte to electroplate a zinc intermediate layer; mixing a metal salt and an organic matter in an inert atmosphere to prepare an ionic liquid; an aluminum sheet serves as an anode, the galvanized aluminum alloy is inserted into ionic liquid electrolyte to be electroplated into Zr-Al alloy, and the Zn / Zr-Al composite coating is prepared; and finally, the corrosion resistance and the mechanical performance of the composite coating are verified through electrochemical and mechanical tests. According to the Zn / Zr-Al composite coating prepared through the method, the layers are designed to have similar lattice structures, and the binding force between the composite coatings is effectively enhanced; the obtained coating has the characteristics of high hardness, wear resistance, corrosion resistance and the like, and the hardness and the polarization resistance respectively reach 268HV and 478Komega.cm <-2 >.

The invention provides a method for producing a hot-dip galvanized sheet. A double-roller cast-rolled thin strip is used as a raw material, the roughness difference in the plate surface edge of the thin strip raw material is improved by designing the roller surface roughness distribution of a texturing roller of a fifth acid rolling rack, and the edge color difference problem after the thin strip raw material is galvanized is solved. The raw material components of each coil of thin strip are combined, and the combination of a zinc layer and a thin strip substrate is effectively improved by formulating an annealing furnace dew point adjustment scheme and performing reasonable production scheduling, so that the problem of coating falling is solved; the increase of the silicon content of the plating solution caused by the high-silicon-component thin strip substrate along with the increase of the working time is fully considered, and the zinc pot components are balanced in time by formulating a zinc pot component adjusting scheme, so that the generation and aggregation of zinc pot slag substances are reduced, and the surface slag defect problem is improved. And finally, stable production of the cast-rolled thin-strip hot-dip galvanized sheet is achieved, and the surface quality requirement of the galvanized sheet of a household appliance is met. The surface quality of a finished product reaches the FB level, the yield strength is 230-270 MPa, the tensile strength is 340-380 MPa, the ductility is larger than or equal to 32%, and the hot-dip galvanized steel plate for the commercial household appliances belongs to a hot-dip galvanized steel plate for the commercial household appliances.

The utility model relates to the field of electro-galvanized parts, and discloses an electro-galvanized part drying device which comprises an air cylinder and a side plate, the side plate is arranged on the left side of the side plate, a top plate is fixed to the top end of the side plate, two sets of rotating bases are movably assembled in the top plate, and a set of rotating assembly is arranged above each rotating base. The rotating assembly comprises a group of air cylinders fixed to the top of the rotating assembly, the bottom of a piston rod of each air cylinder is fixedly connected with a stepping motor, an output shaft of each stepping motor is fixedly connected with a driving shaft, and the bottom end of each stepping motor is fixedly connected with a lifting plate. According to the drying equipment for the electro-galvanized parts, the rotating assembly is arranged, double-channel drying is adopted, rapid, continuous and efficient drying is achieved through double-channel drying, it is guaranteed that each set of electro-galvanized parts can be fully attached to the drying assembly, the direction of the electro-galvanized parts does not need to be manually rotated, the drying uniformity is improved, and the drying efficiency is improved. The problem that manual steering is needed is solved.

The utility model relates to a repairing device for a galvanized layer of a galvanized pipeline, the repairing device comprises adsorption cotton for adsorbing and locking an electrogalvanizing solution and a rectifying mechanism for electrifying and adjusting current, the rectifying mechanism is provided with a positive electrode and a negative electrode, a zinc net is arranged in the adsorption cotton, a first wire is arranged on the zinc net, and a second wire is arranged on the first wire. One end of the first wire is connected with the zinc net, the other end of the first wire is connected with a positive electrode of the rectifying mechanism, a negative electrode of the rectifying mechanism is electrically connected with the galvanized pipeline, and in actual operation, the adsorption cotton with the zinc net inside is soaked into an electrogalvanizing solution and then taken out, and then the adsorption cotton with the zinc net wraps a to-be-repaired galvanized layer; the zinc net electrically connected with the positive electrode of the rectifying mechanism serves as the positive electrode, the galvanized pipeline electrically connected with the negative electrode of the rectifying mechanism serves as the negative electrode, the rectifying mechanism is powered on, the current is adjusted to be appropriate, and then galvanization treatment can be achieved at the position of the to-be-repaired galvanized layer.

Provided is a zinc-containing liquid using iron-making dust as a starting material, which can be used for producing an electrogalvanized steel sheet having a beautiful and bright appearance. The present invention is characterized by comprising: a zinc leaching step in which iron-making dust is brought into contact with an acidic aqueous solution, and zinc contained in the iron-making dust is leached into the acidic aqueous solution; a first impurity precipitation step in which impurities are precipitated in a state in which the pH of the first treatment liquid obtained in the zinc leaching step is 4.0-6.0; a second impurity precipitation step for adding 0.10 g / L or more of a chelating agent to the second treatment liquid obtained in the first impurity precipitation step in a pH of 4.0-6.0 to precipitate impurities; and a solid-liquid separation step in which the third treated liquid obtained in the second impurity precipitation step is subjected to solid-liquid separation to obtain a zinc-containing liquid.

The application provides a method for solving surface color difference of electro-galvanized steel plate, and belongs to the technical field of steel rolling. The method comprises the following steps: in the heating stage, the slab is subjected to segmented heating at a set temperature for a set time, so that the surface and middle temperature of the slab are stabilized; and in the finishing rolling stage, the slab is subjected to finishing rolling at a set finishing rolling inlet temperature and a set finishing rolling rolling speed, so that the pure rolling time in the finishing rolling stage is reduced. The method is scientific, effective, simple to operate and high in economy, and can easily solve the surface strip-shaped color difference of low-IF steel after electro-galvanizing without increasing equipment.

The invention belongs to the technical field of hot-rolled electro-galvanized automobile sheet production, and particularly relates to a low-temperature production method of a hot-rolled electro-galvanized automobile sheet, which comprises the following steps: 1) the rolling period is 6-30km; centrally discharging an electro-galvanized substrate with the temperature of an output furnace being less than or equal to 1200 DEG C; high-speed steel rollers are used as working rollers F1-F4; 2) controlling the heating temperature according to the lower limit of the target heating temperature; the tapping temperature of the plate blank is controlled to be 1160-1220 DEG C; the sum of the second heating section time and the soaking section time is 60-115 min; the total in-furnace time is less than or equal to 210 minutes; (3) high-pressure water for rough rolling and finish rolling is normally input, double rows of high-pressure water are input for rough descaling, and a 3 + 3 rolling mode is adopted for rough rolling; and 4) layer cooling and coiling: controlling the finish rolling temperature at 910 + / -15 DEG C, and controlling the coiling temperature at 635 + / -15 DEG C. The method has the advantages that the process is simple, the product quality is ensured, the filiform spot defect rate is smaller than or equal to 1%, and the high-grade automobile outer plate production requirement is met.

The application discloses a magnesium alloy zinc electroplating method and belongs to the technical field of magnesium alloy surface treatment. The method comprises the following steps: 1. substrate pretreatment: AZ31B magnesium alloy is polished by sandpaper and then is washed by anhydrous ethanol and dried; 2. alkali washing: the micro specific surface area of the substrate is increased, and the mechanical bite effect of the coating and the substrate is strengthened; 3. acid washing activation: a protective film is formed on the surface of the magnesium alloy, so that the alloy is not corroded in the electroplating solution; 4. pre-plating zinc: an initial zinc layer with uniformity, compactness and strong adhesion is rapidly established on the surface by adopting impact current; and 5. zinc electroplating: the magnesium alloy with the initial zinc layer is electroplated. The zinc coating of the magnesium alloy is uniform and compact and is silver-white. The process is synergistically controlled by pretreatment and impact current pre-plating, the coating is uniform and compact, is bright silver-white, is firmly combined with the substrate and is not easy to peel off, and the obtained zinc coating has excellent corrosion resistance and welding adaptability.

The invention discloses an electrogalvanizing method for a bolt, which comprises the following steps: placing the bolt subjected to degreasing, rust removal and acid etching activation in a plating solution for electrogalvanizing, and then carrying out post-treatment, the plating solution is prepared from the following components in concentration: zinc oxide, sodium hydroxide, inositol hexaphosphate, a rare earth lanthanum-chitosan complex, polydopamine nano microspheres and modified fatty alcohol polyoxyethylene ether phosphate. According to the method, the weather resistance of the bolt can be improved, the hydrogen embrittlement risk can be remarkably reduced, the safety is effectively improved, and the service life is effectively prolonged.

A high-strength steel sheet according to the present invention is composed of 0.30-0.50 mass% C, 0-1.50 mass% Si, 0.10-3.50 mass% Mn, 0-0.020 mass% P, 0-0.010 mass% S, 0.001-1.000 mass% Al, 0-0.30 mass% Cr, and 0.08%-0.15 mass% Ti, the remainder being Fe and unavoidable impurities. The proportion of martensite structure in the total metal structure is 95 area% or more, and the tensile strength is 1700 MPa or more.

The invention discloses a three-dimensional tower-shaped zinc negative electrode for a water-based zinc ion battery as well as a preparation method and application of the zinc negative electrode, and relates to the technical field of water-based zinc ion batteries. The preparation method comprises the following steps: taking a copper foil as a working electrode and a zinc sheet as a counter electrode, placing the working electrode and the counter electrode in an electroplating solution for electroplating, and forming a zinc coating on the surface of the copper foil after electroplating is completed, so as to obtain the three-dimensional tower-shaped zinc negative electrode for the water-based zinc ion battery, the electroplating liquid is composed of conductive salt, zinc salt, isomaltitol and water. According to the method, the copper foil serves as a working electrode, the zinc sheet serves as a counter electrode, electroplating liquid composed of conducting salt, zinc salt and isomaltitol is adopted, a zinc layer is electroplated on the surface of the copper foil through the electroplating technology, the zinc layer is of an obvious three-dimensional'tower-shaped 'structure, stable sites can be provided for deposition / dissolution of zinc, volume changes can be buffered, and the zinc plating effect is improved. And dendritic crystal growth and corrosion are inhibited from the structure and chemical aspects, so that the cycling stability and safety performance of the aqueous zinc ion battery are improved.

The utility model provides an anti-storm-surge integrated monitoring marker structure, which belongs to the technical field of anti-storm-surge monitoring markers and comprises an electro-galvanized steel pipe, a foundation structure, a heat dissipation case, a communication component and a rotatable support, the electro-galvanized steel pipe is fixed at the top of the foundation structure, the heat dissipation case is fixed at the bottom of the foundation structure, and the rotatable support is fixed at the bottom of the foundation structure. The foundation structure is fixed in an existing foundation; the rotatable bracket is fixed on the electro-galvanized steel pipe through a bidirectional hoop and is used for keeping stable under the action of external force; the heat dissipation case is fixed on the electro-galvanized steel pipe, the outer layer of the heat dissipation case adopts a shutter structure and is used for preventing water, ventilating and balancing internal and external air pressure, and the interior of the heat dissipation case adopts a separated cabin isolation design; the utility model provides an anti-storm surge integrated monitoring marker structure which can solve the problems that an existing monitoring marker is prone to loss and short in service cycle, and parts are fixedly arranged, replaced and maintained difficultly.

The invention belongs to the technical field of aluminum-based composite material reinforcement, and discloses an electro-galvanized stainless steel lattice reinforced aluminum-based composite material and a preparation method thereof.The preparation method comprises the steps that firstly, a stainless steel lattice lattice structure is prepared; secondly, after the stainless steel lattice structure is cleaned, activating treatment is conducted; thirdly, the activated stainless steel lattice structure is galvanized; uniformly mixing aluminum-based powder, copper powder, magnesium powder and AlSi10Mg powder to obtain aluminum-based mixed powder, and paving the aluminum-based mixed powder into a graphite mold; the aluminum-based powder is aluminum powder or aluminum alloy powder; fourthly, the galvanized stainless steel lattice lattice structure is placed in the aluminum-based mixed powder laid in the graphite mold, the aluminum-based mixed powder continues to be injected into the graphite mold, and the aluminum-based mixed powder is made to be higher than the galvanized stainless steel lattice lattice structure; and fifthly, after the galvanized stainless steel lattice structure injected with the aluminum-based mixed powder is subjected to vacuum hot pressing sintering, cooling is conducted, and the electro-galvanized stainless steel lattice reinforced aluminum-based composite material is obtained.

Provided is a zinc-containing substance which can be used for producing an electrogalvanized steel sheet having a beautiful and bright appearance. The method comprises: a zinc leaching step in which iron-making dust is brought into contact with an acidic aqueous solution to leach zinc contained in the iron-making dust into the acidic aqueous solution; a first impurity precipitation step in which impurities are precipitated in a state in which the pH of the first treatment liquid obtained in the zinc leaching step is 4.0-6.0; a second impurity precipitation step for adding 0.10 g / L or more of a chelating agent to the second treatment liquid obtained in the first impurity precipitation step in a pH of 4.0-6.0 to precipitate impurities; a first solid-liquid separation step for performing solid-liquid separation on the third treatment liquid obtained in the second impurity precipitation step; a zinc precipitation step in which a zinc-containing substance is precipitated in a state in which the fourth treatment liquid obtained in the first solid-liquid separation step has a pH of 8.0-12.0; and a second solid-liquid separation step for separating the fifth treated liquid obtained in the zinc precipitation step into a zinc-containing substance and a raffinate.

The invention relates to a high-corrosion-resistance alloy composite coating of a fastener and a manufacturing method of the high-corrosion-resistance alloy composite coating, and belongs to the technical field of metal coatings of fasteners. The problems that an existing fastener surface coating cannot meet the requirement for the service life of a zinc-aluminum-magnesium alloy coating steel plate workpiece engineering structure after fixing and connecting, and a hot dipping process suitable for a fastener zinc-aluminum-magnesium coating lacks are solved. A high-corrosion-resistance alloy composite coating of a fastener comprises an inner layer and an outer layer, the inner layer is an electrogalvanizing layer which is tightly attached to the outer surface of a fastener base body and has the thickness of 2-5 micrometers, and the outer layer is a zinc-aluminum-magnesium alloy coating tightly attached to the outer surface of the inner layer. The novel composite coating which is excellent in corrosion resistance and completely matched with the engineering structure of the zinc-aluminum-magnesium alloy coated steel plate workpiece can be prepared without changing the existing fastener hot galvanizing process, process and equipment.

To provide a high-strength steel plate with a tensile strength of 1700 MPa or more and good flatness. [Solution] A high-strength steel sheet containing C: 0.30% to 0.50% by mass, Si: 0% to 1.50% by mass, Mn: greater than 0.10% to 3.50% by mass, P: 0% to 0.020% by mass, S: 0% to 0.010% by mass, Al: 0.001% to 1.000% by mass, Cr: greater than 0% to 0.30% by mass, Ti: 0.08% to 0.15% by mass, B: 0.0001% to 0.0050% by mass, with the remainder being Fe and unavoidable impurities, having a martensitic structure proportion of 95% or more in the total metallic structure, and a tensile strength of 1700 MPa or more.

A high-strength steel sheet having a prescribed composition, a steel structure in which a MA fraction is higher than 0% and 15.0% or less, a fraction of soft α phase structure is 0% or more and 50% or less, and a standard deviation of an equivalent circle diameter of residual austenite is greater than 0.155 μm, in terms of an area ratio in the entire steel structure.

The invention relates to the technical field of surface testing, in particular to an electro-galvanized steel sheet coating pulverization detection method which comprises the following steps: cutting an electro-galvanized sheet into a square sample; the sample is clamped between the female dies, the male die conducts upward stamping, and stamping is stopped until the sample cracks; the movement displacement of the male die is gradually reduced until the sample does not crack; observing the state of the sample, and marking the sample as an effective sample and an invalid sample; selecting a plurality of samples, measuring the chromatic values of the surfaces of the samples by using a colorimeter, and stamping by using the gradually reduced displacement of the male die; respectively measuring the chromatic values of the outer surfaces of the stamped samples; and calculating the average value of chromatic aberration before and after stamping to reflect the pulverization degree of the galvanized surface of the electro-galvanized steel plate before and after deformation. According to the method, colorimeter analysis and mechanical property testing are combined, and errors caused by manual interpretation of a single detection method are avoided.

The invention relates to the technical field of metal processing, and particularly discloses a sheet metal processing forming process of a lower bracket of a chef machine. The raw materials of the product comprise an SPCC cold-rolled steel sheet, argon and carbon dioxide mixed gas for welding, an electroplating solution, an alkaline degreasing solution, a sulfuric acid solution, a trivalent chromium passivator and a water-based acrylic resin sealing agent. The preparation method comprises the following steps: selecting raw materials, uncoiling and flattening, carrying out punch forming after laser cutting and blanking, carrying out bending forming and welding assembly for multiple times, removing welding slag and burrs, and sequentially carrying out surface treatment such as electrolytic degreasing, pickling and activating, electrogalvanizing, passivating and sealing. The lower support of the chef machine can be used for supporting the whole chef machine and has the advantages of being stable in structure and good in corrosion resistance. In addition, according to the preparation method, through cooperation of all working procedures, the machining stress is reduced, the machining precision is improved, and the preparation method has the advantages of being reasonable in process and controllable in operation.

The utility model relates to the technical field of electrogalvanizing equipment, in particular to an auxiliary material circulating and supplementing device which comprises an electroplating tank, a circulating assembly, a filtering assembly, a sealing assembly and a stirring assembly, the circulating assembly comprises two circulating pumps, a liquid inlet pipe, a liquid outlet pipe, a liquid supplementing tank and a partition plate, the two circulating pumps are fixedly connected with the electroplating pool and located on the outer side of the electroplating pool, the liquid inlet pipe is fixedly connected with the circulating pumps and penetrates through the electroplating pool, and the liquid outlet pipe is fixedly connected with the circulating pumps and penetrates through the electroplating pool; the liquid supplementing tank is fixedly connected with the circulating pump and located on the outer side of the electroplating pool, the partition plate is fixedly connected with the liquid supplementing tank and located in the liquid supplementing tank, the filtering assembly and the sealing assembly are connected with the electroplating pool, and the stirring assembly is connected with the sealing assembly. And the problem that large-batch metal is inconvenient to galvanize is solved.