270 results about "Dip-coating" patented technology

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

The invention discloses a graphene microchip dip-coating device for a PCB (Printed Circuit Board) substrate, and relates to the technical field of circuit board processing. Comprising a gantry moving frame, a plurality of treatment grooves and a mounting rod, and a plurality of clamping units distributed at equal intervals are arranged on the mounting rod; the clamping unit comprises a U-shaped frame which is erected on the mounting rod, the U-shaped frame is provided with a fixed clamping frame, the fixed clamping frame is fixedly connected with a positioning block and hinged to a movable clamping frame, and a supporting piece is fixedly connected to the side, close to the positioning block, of the movable clamping frame. The movable clamping frame is supported and limited through the supporting piece, when the base plate is clamped, the base plate only needs to be moved, the supporting piece is pushed through the base plate, the supporting piece relieves limiting of the movable clamping frame through the supporting piece, and then the base plate can be clamped and fixed, so that the step that all clamps are fastened one by one is omitted, and the clamping efficiency is improved. The probability that the substrate deflects during the clamp fastening process is reduced, the operation steps are simplified, and then the dip-coating and electroplating efficiency is improved.

The utility model discloses a dip-coating tank and an electric hot melting non-self-adhesive asphalt waterproof coiled material production device. The dip-coating tank comprises a dip-coating tank body, and a first partition plate assembly and a second partition plate assembly are arranged in a tank cavity of the dip-coating tank body. The first partition plate assembly and the second partition plate assembly divide the groove cavity into electric hot melting asphalt coating material dip-coating grooves located on the two sides and a common asphalt coating material dip-coating groove located in the middle in the width direction, and gaps for coiled materials to pass through are formed in the first partition plate assembly and the second partition plate assembly correspondingly. The structure is improved to adapt to the production and processing of the novel electric hot melting non-self-adhesive asphalt waterproof coiled material.

The invention discloses dip-coating equipment and a dip-coating method for processing impregnated decorative paper, which are used for realizing uniformity control in the impregnation process of the decorative paper and solving the problem of excessive or insufficient local glue amount in the existing impregnation mode. On one hand, the dip-coating equipment for processing the impregnated decorative paper comprises a glue tank, a paper feeding roller, an impregnating mechanism, a smearing mechanism and a glue scraping mechanism are sequentially arranged on the glue tank from one side to the other side of the glue tank, and the paper feeding roller is arranged above one side of the glue tank and can rotate in the circumferential direction of the paper feeding roller; the dipping mechanism comprises a dipping roller, and the dipping roller is arranged in the glue tank; the coating mechanism is arranged above the glue tank, the coating mechanism comprises two groups of brush rollers, the two groups of brush rollers are symmetrically arranged up and down, and the two groups of brush rollers are driven by a third power device to rotate in the circumferential direction of the brush rollers; the whole glue scraping mechanism is arranged above the glue tank, the glue scraping mechanism comprises two groups of scraping plates, and the two groups of scraping plates are symmetrically arranged up and down.

The invention relates to a zinc-aluminum-magnesium alloy coated steel plate / strip for photovoltaic structure manufacturing and a production method, and belongs to the field of metal material processing and manufacturing. The base material is composed of 0.15%-0.20% of C, 0.20%-0.3% of Si, 0.5%-0.8% of Mn, less than or equal to 0.025% of P, less than or equal to 0.015% of S, 0.03%-0.07% of Als, 0.010%-0.020% of N, 0.020%-0.040% of Ti, 0.010%-0.030% of V and the balance Fe and inevitable impurities; ti + V = (0.2-0.45) x (C + N). The method comprises the steps of hot rolling, acid pickling, cold rolling, annealing, hot dipping, air knife purging and finishing. The technology improves the stability, obdurability and surface quality of the plate. The problems that a zinc-aluminum-magnesium steel plate alloy prepared in the prior art is single in strengthening, high in cost, wide in strength range, low in ductility and large in performance fluctuation are solved.

The application discloses a kind of textile dip coating integrated equipment, the present application relates to textile processing equipment technical field, including: equipment is provided with micro-liquid film part and wedge extrusion part along the direction of textile conveying, micro-liquid film part and wedge extrusion part below are provided with floater control part, floater control part is provided with the liquid return shell of upper end opening, the liquid return shell is formed by communicating with channel guide section and box recovery section, the bottom of channel guide section is inclined to box recovery section, vertically arranged liquid baffle is fixed in box recovery section, and liquid baffle separates box recovery section into reflux cavity and drainage cavity, the equipment is provided with floater control part and floater part, so that float ball can be lifted with the change of liquid level in liquid return shell, and the flow area between second liquid inlet pipe and infusion tube is adjusted by lever arm, rotating rod and connecting rod drive valve needle to move, so that, equipment can automatically adjust the coating liquid supply amount entering micro-liquid film part according to the liquid level in liquid return shell.

This utility model discloses a fluidized bed dip coating device, including a fluidized bed body. A cover plate is hinged to the top of the fluidized bed body, and a lifting plate is connected to the top of the cover plate via a lifting mechanism. A transmission cavity is opened in the lifting plate, and a first synchronous pulley and a second synchronous pulley are arranged in the transmission cavity. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt drive. The bottom of the first synchronous pulley and the second synchronous pulley are provided with a connecting shaft that penetrates the cover plate and extends downward. The lifting mechanism can drive two mounting plates connected to the lifting plate to move vertically up and down, thereby adjusting the height between the hook and the thermoplastic powder according to the dip coating requirements of different materials, improving the adaptability of the device. A servo motor can drive the first synchronous pulley and the second synchronous pulley to rotate, thereby causing the two mounting plates to rotate, so that the material can have more complete contact with the thermoplastic powder during the dip coating process, thereby improving the dip coating efficiency and quality.

The application discloses a kind of for tape bottom layer on ultraviolet light solidification dip coating ink, the ultraviolet light solidification dip coating ink is composed of the following weight parts of component: photocuring oligomer: 30-50 parts, functional active monomer: 20-50 parts, photo initiator: 3-6 parts pigment: 5-35 parts, dispersing agent: 1-3 parts, surface auxiliary agent: 1-2 parts;The synthesis steps of the photocuring oligomer are: after epoxy E51 is mixed with octandioic acid, under the condition of nitrogen protection, temperature is controlled 115 DEG C, reaction 3-4h, when acid value is less than 10mgKOH / g, reduce reaction temperature to 85-95 DEG C, add polymerization inhibitor, slowly drop catalyst and glutaric acid-3-ethyl-3-oxetane monomethyl ester, drop adding time is controlled at 30-40min, and reaction 7-8h, when acid value is less than 10mgKOH / g, control reaction temperature to 65-75 DEG C, add isocyanatoethyl acrylate and reaction 5-6h, obtain photocuring oligomer with oxetane and acrylate structure simultaneously.The application has the characteristics of low viscosity, good leveling performance, has very good adhesion on steel tape, and solidification speed is relatively fast.

Conveyor device (112) for a workpiece treatment system (100), in particular for a dip coating system (104) for dip coating vehicle bodies (106), comprising several conveying units (120) for picking up, transporting and delivering at least one workpiece (102) and a conveying section (118) along which the several conveying units (120) are bidirectionally movable, wherein each conveying unit (120) comprises at least one receiving device (128) for releasably securing the at least one workpiece (102) to the conveying unit (120), characterized in that each conveying unit (120) is movable along a conveying section (122) of the conveying section (118) of the conveying device (112), wherein the conveying section sections (122) of at least two conveying units (120) overlap.

The invention discloses a bi-component epoxy dip-coating paint for a strong-permeation boiling-resistant water-based textile paper tube and a preparation method of the bi-component epoxy dip-coating paint, and belongs to the technical field of water-based paints. The coating is composed of a component A and a component B, wherein the component A is a composite wetting penetrant composed of a self-emulsifying submicron waterborne epoxy dispersion, dioctyl sodium sulfosuccinate and an acetylene glycol surfactant; and the component B is a quick-drying water-soluble modified polyamine curing agent added with a reactive curing accelerator. Through the cooperation of the small-particle-size epoxy dispersoid and the composite wetting penetrant, the technical problems that a traditional water-based paint is poor in permeability to paper tube fibers and weak in adhesive force are solved; meanwhile, through the synergistic effect of the quick-drying curing agent and the accelerant, the drying time is shortened. The coating has the characteristics of low VOC (volatile organic compound) content, environmental protection, safety, high permeability to paper tube base materials, high drying speed and excellent adhesive force, and a compact paint film formed after curing has saturated water vapor cooking resistance.

The application relates to the technical field of coating preparation, in particular to a nano coating for a self-cleaning polycrystalline solar module and a preparation method, wherein the coating is composed of titanium dioxide nanotubes, fluorosilane modified silica aerogel, graphene quantum dots and polyaniline-polyazole copolymer; the titanium dioxide nanotubes are prepared through a hydrothermal reaction and calcination, the aerogel is synthesized through a sol-gel method, the quantum dots are obtained through pyrolysis reduction, and the conductive polymer is obtained through oxidation polymerization; the components are dispersed in a solvent in proportion, ultrasonic dispersion is carried out after the addition of a leveling agent, the solar module is coated through a dip coating method, and the coating is formed through drying and ultraviolet curing. The self-cleaning nano coating is composed of multiple components, forms a multistage rough structure, realizes superhydrophobicity, widens a light response range, improves photocatalytic efficiency, improves electrical performance and increases photoelectric conversion efficiency.

The application relates to a kind of insulating coating slurry and preparation method for dip coating on battery shell, and relates to the technical field of battery production, the insulating coating slurry, including the following weight parts of each raw material component: 20-50 parts of inorganic precursor;10-40 parts of aqueous organic resin;5-20 parts of inorganic filler;20-40 parts of solvent;1-5 parts of auxiliary agent;The above raw material components are prepared into insulating coating slurry, and then the insulating coating slurry is dip coated on the battery shell, the inorganic precursor in the insulating coating slurry makes the insulating coating have higher hardness, better heat resistance, insulation, chemical corrosion resistance and other characteristics;Aqueous organic resin provides good flexibility and high adhesion to the substrate, during the curing process, the inorganic network and the aqueous organic resin are penetrated and bonded at the molecular scale, forming a dense and uniform hybrid structure, and the inorganic filler uses inorganic ceramic particles as a reinforcing phase, further improving the insulation, hardness, corrosion resistance, heat resistance and other properties of the insulating coating.

The present application relates to a kind of for the separation of acetone and isoprene gas in human exhaled gas Composite membrane and its preparation method, polydimethylsiloxane (PDMS) modified polymer-based hollow fiber composite membrane is prepared by dip coating method.The above-mentioned modification, while covering the macropore of base film surface, improve the adsorption capacity of functional layer to acetone gas, so as to improve the separation effect of composite membrane to isoprene / acetone.The present application has the characteristics of simple operation, gas separation effect is remarkable, gas molecule is measured quickly, accurately, efficiently etc., provides a new way of thinking for the selective separation of organic components in human exhaled gas.

Method of manufacturing a steel strip comprising the subsequent steps of hot rolling the strip into a hot rolled strip, cold rolling the hot rolled strip, and hot dip coating the cold rolled strip with a Zn-based coating by leading the strip through a bath comprising molten zinc, and wiping the strip after the coating using an air knife having a knife slot from which a wiping gas is ejected, and cold rolling the steel strip in a multi-stand cold rolling mill to a final cold rolled thickness of 0.40 mm to 1.00 mm, wherein the cold rolled and coated steel sheet comprises a steel substrate provided with a hot dip metal coating.

The utility model provides a kind of spring steel wire oiling device, belong to spring steel wire technical field.A kind of spring steel wire oiling device, characterized by, including device body, oil tank is fixedly connected in the device body middle, first support wheel is rotatably connected in the oil tank, the left side of device body above the oil tank is rotatably connected with second support wheel, the right side of device body above the oil tank is rotatably connected with third support wheel, support frame is fixedly connected on the device body between first support wheel and third support wheel, recovery mechanism is equipped on the support frame, and winding mechanism is equipped in the right side of device body.The utility model has spring steel wire and oil contact in oil tank, carries out dip coating, avoids the situation that steel wire outer surface is missed coating, after spring steel wire leaves oil tank, recovery mechanism carries out recovery to the excess oil of spring steel wire surface, avoids the advantage of causing waste.

The invention relates to hydrophilic coating equipment for an angiographic catheter and a coating method, and belongs to the technical field of interventional medical instruments. The equipment comprises a cabinet body, two solution tanks, a guide pipe dip-coating curing mechanism and a first moving module, the guide pipe dip-coating curing mechanism comprises a guide pipe dip-coating assembly, a second moving module and a curing assembly. The catheter dip-coating assembly comprises a supporting thin tube capable of extending into an inner cavity of the angiographic catheter and a blocking piece at the far end of the supporting thin tube. The curing assembly comprises an air blowing unit arranged around the angiographic catheter and a pre-curing light source. In the process that the angiographic catheter is lifted upwards from the solution tank, the air blowing unit blows air to the outer surface of the catheter, and meanwhile the pre-curing light source conducts irradiation curing. According to the method, blowing and pre-curing are combined, the sagging phenomenon of the hydrophilic solution caused by gravity is effectively restrained, and therefore the problems that the thickness of a coating is not uniform and the end of the catheter is accumulated are solved, and the uniformity and quality stability of the coating are improved.

The utility model belongs to the enamel technical field, concretely relates to a kind of automatic dip-coating equipment, including the feeding conveyor device, transfer dip-coating device, soaking device and discharging conveyor device sequentially arranged along the conveying direction;Soaking device is equipped with soaking cavity;Transfer dip-coating device includes dry lifting drive mechanism, transfer conveying mechanism and clamping mechanism;Dry lifting drive mechanism is connected to transfer conveying mechanism;Clamping mechanism is connected to dry lifting drive mechanism;The clamping end of clamping mechanism is arranged between soaking cavity and feeding conveyor device;And the clamping end of clamping mechanism is arranged between discharging conveyor device and soaking cavity.The utility model can reduce manual enamel soaking and manual feeding and discharging operation, and is favorable to ensure the completeness of enamel dip-coating;Therefore, it is favorable to improve enamel dip-coating quality and operation efficiency.

The utility model provides a kind of for big single basket coating machine processing photovoltaic support's dip coating tool, belong to dip coating tool technical field.A kind of for big single basket coating machine processing photovoltaic support's dip coating tool, characterized by, including bottom big ring, bottom small ring is equipped in the bottom big ring middle, it is fixedly connected between the bottom big ring and bottom small ring by several reinforcing ribs, several support columns are uniformly fixedly connected on the bottom big ring, first support ring is fixedly connected on the support column, several stand columns are fixedly connected on the bottom small ring, second support ring is fixedly connected on the stand column, several limit posts are uniformly fixedly connected on the second support ring.The utility model has the advantages that workpiece is vertically fixed, single processing quantity is more, tool design structure is simple, so additional solution loss is less, raw material cost is greatly reduced.

The application discloses a kind of detection under the gas tightness experimental device of multiple factors micro leakage;The device includes gas storage module, experimental body module, soap solution dip coating module, data acquisition module, dual-camera three-dimensional reconstruction module and leak point sealing module.Gas storage module includes gas compressor and pressure stabilizing vessel.Soap solution dip coating module includes hose, guide rail and soap solution container.Data acquisition module includes pressure sensor for detecting the pressure inside pressure stabilizing vessel.Camera three-dimensional reconstruction module includes first industrial camera and second industrial camera.The application uses stainless steel sheet welding to form a cubic experimental body, and different diameter, different shape leak holes are opened on the surface and weld of the experimental body, so as to simulate different gas leakage scenarios of metal shell structure, so that the growth of soap bubble of different leak holes can be studied;Further, the relationship between the shape and size of the hollow leak hole and the growth of soap bubble can be obtained, and the accuracy of detecting leakage according to the soap bubble method is improved.

The application discloses a kind of hanging chain type workpiece coating systems, including hanging chain device, spraying device, paint dipping device and at least two baking devices;Hanging chain device includes chain conveying mechanism, two workpiece lifting mechanisms and multiple suspension mechanisms.The hanging chain type workpiece coating system utilizes each suspension mechanism to hang workpiece, and is transported in assembly line by chain conveying mechanism, so that multi-angle stereo sound paint spraying operation can be carried out on workpiece, ensure the comprehensiveness of workpiece coating paint spraying, reduce the workload of manual paint repair in later period, enhance the coating processing quality of workpiece;Utilize paint dipping device can be cooperated with hanging chain device, so as to realize dip coating, compared with the existing carrying trolley and spraying mode has better coating comprehensiveness, ensure the coating quality of workpiece;Utilize spraying device can carry out surface cleaning before workpiece is dipped in paint, ensure the coating quality of workpiece.

The plastic dipping equipment with the air draft device comprises a soaking pool, a lifting assembly is fixedly installed on the outer surface of one side of the soaking pool, and an air draft assembly is fixedly installed at the upper end of the soaking pool. A connecting pipe is fixedly installed on the outer surface of the rear end of the air draft assembly. The lifting assembly comprises an air cylinder, a piston rod, a lifting rod, a connecting plate and a transverse connecting plate. According to the plastic dipping equipment with the air draft device, the lifting assembly and the air draft assembly are arranged, so that clothes hangers needing to be soaked can be rapidly placed in the soaking pool for dip-coating, the surfaces of liquid smeared on the clothes hangers are uniform and tidy, and the clothes hangers are more attractive in appearance after being air-dried; and moreover, a conical shielding cap is arranged, moisture around the clothes hanger can be extracted in a concentrated mode, the air drying effect is improved, the overall production efficiency is improved, and a better use prospect can be brought.

The invention relates to the field of material science and surface engineering, particularly discloses a preparation method of an antibacterial coating on the surface of a sanitary product, and aims to solve the technical problem that an existing antibacterial coating is difficult to synergistically realize high adhesive force, long-acting broad-spectrum antibacterial property and cleaning and wear resistance on multiple types of substrates. The method comprises the following steps: carrying out acid-base etching and plasma composite pretreatment on a ceramic, stainless steel or engineering plastic base material; preparing a multifunctional composite sol containing a silane coupling agent, nano titanium dioxide, a silver-zinc composite oxide and fluorinated acrylate; a wet film is formed through gradient dip-coating, and a three-dimensional cross-linked network is constructed through segmented thermocuring; and surface hydrophobic enrichment and silver ion migration are induced through low-energy electron beam irradiation, so that a double-function gradient structure with hydrophobic outside and slow release inside is formed. According to the technical scheme, strong adhesion, super-hydrophobicity, broad-spectrum antibacterial performance and excellent durability of coatings on various bathroom base materials are achieved, the process is compatible with normal-pressure continuous production, and the industrial applicability is remarkably improved.

The application discloses a preparation method of an interpenetrating phase ceramic dental material and belongs to the technical field of biomedical materials. The application is based on the porous foam structure and cavity tissue of bird skeletons for biomimetic design, two kinds of biomimetic bird bone structures combining the characteristics of annular hyoid structures and cavity tissues are established, and according to the bird skull cooperative damping mechanism, a mortise and tenon structure with the characteristics of cooperative bearing and buffering is constructed, the structure has more excellent mechanical bearing performance and deformation stability compared with a traditional structure. The zirconium oxide-hydrogel interpenetrating phase material prepared by a photo-crosslinking method, the composite design of the soft phase and the hard phase material not only significantly improves the energy absorption characteristics of the material, but also effectively improves the fracture toughness of the dental material. On this basis, a functional coating is constructed on the surface of the material by using a sol-gel dip coating process, and the problems of insufficient corrosion resistance and wear resistance of the dental material in the oral environment are further solved.

The application discloses a kind of strong penetration cooking-resistant type water-based textile paper tube two-component epoxy dip coating and preparation method thereof, belong to water-based paint technical field.The coating is composed of A component and B component, A component uses the composite wetting penetrant that self-emulsifying submicron water-based epoxy dispersion and sulfobutane acid dioctyl sodium salt, acetylene glycol surfactant are composed of;B component selects fast-drying water-soluble modified polyamine curing agent, adds reactive curing accelerator.By the synergy of small particle size epoxy dispersion and composite wetting penetrant, the technical problem that traditional water-based paint is poor in paper tube fiber permeability, weak adhesion is solved;At the same time, through the synergistic effect of fast-drying curing agent and accelerator, the drying time is shortened.The coating has the characteristics of low VOC content, environmental protection safety, strong penetration to paper tube substrate, fast drying speed, excellent adhesion, and the dense paint film formed after curing has the performance of saturated water vapor cooking resistance.

The invention relates to the technical field of water treatment membrane production, and particularly discloses water treatment membrane production equipment and a production line thereof.The water treatment membrane production equipment comprises an unwinding device used for supplying a to-be-coated base membrane, a first coating device, a transfer device, a second coating device and a curing device; a pre-curing reaction box body and a rinsing box body are respectively arranged outside the first coating device, and the first coating device comprises a dip-coating box body and a slit coating mechanism; the curing device comprises a drying box body and a curing box body, one end of the drying box body is aligned with one end of the curing box body, the second coating device is arranged between the drying box body and the curing box body, a transfer device is arranged between the first coating device and the second coating device, and the drying box body is arranged outside the transfer device; continuous and automatic production is effectively achieved, and the problems that traditional equipment is dispersed in working procedure, tedious in operation, single in coating mode and unstable in coating quality can be solved.

The utility model discloses a clamping and assembling integrated robot clamp which aims at solving the problems that traditional sand core processing is low in efficiency and poor in precision. The fixture comprises a robot mounting disc, a main body bracket, an electric control main box and two groups of symmetrically arranged clamping mechanisms, each group of mechanism is driven by a lifting air cylinder to vertically move, a push-pull air cylinder is controlled to horizontally slide, and an elastic expansion sleeve and a sand core positioning rod are matched to realize lossless clamping of a sand core; the limiting assembly accurately controls the stroke of the air cylinder through a magnetic sensor and a limiting block, and action consistency is ensured. The fixture integrates the functions of clamping, deburring, coating dip-coating and assembling, the whole-process treatment of the sand core can be completed through coordination of the electric control main box and multi-cylinder linkage and single operation, and compared with a traditional process, the time consumed in the working procedure is reduced, and the production efficiency and the casting yield are remarkably improved. The device has the characteristics of high precision and modularization, and is suitable for a large-scale casting automatic production line.

The utility model discloses chemical paint fading equipment for airplane components. The chemical paint fading equipment comprises an equipment outer cover, and a dip coating tank, a curtain coating tank, a reaction tank, a washing and air drying tank, a paint fading agent storage tank and a single-arm gantry manipulator which are arranged in the equipment outer cover, the dipping and coating groove is used for dipping and coating a paint fading agent in the dipping and coating groove; the curtain coating groove is used for curtain coating of a paint fading agent in the curtain coating groove, and a spraying pipe is arranged in the curtain coating groove; a spraying pipe in the curtain coating tank is connected with a liquid outlet of the paint fading agent storage tank through a spraying pump, and a liquid outlet of the spraying pipe is also connected to a waste liquid inlet of the paint fading agent storage tank, so that a circulating spraying system is formed; the reaction tank is used for carrying out paint fading reaction on the aircraft component treated by the dip coating tank or the curtain coating tank; a spraying air-drying pipe is arranged in the washing air-drying tank and is used for washing and water-cutting air-drying the airplane parts subjected to the paint fading reaction; and the single-arm gantry manipulator is used for driving the aircraft parts to move into the grooves for treatment.

The present application belongs to the technical field of enamel coating preparation, and particularly relates to a preparation method of an enamel coating with an angle-dependent color metal luster, an aluminum powder pigment used in the preparation method and a preparation method of the aluminum powder pigment. The preparation method of the enamel coating comprises (1) substrate pretreatment; (2) preparation of an enamel glaze containing the aluminum powder pigment; (3) primary dip coating; after the primary dip coating is completed, gradient temperature rising drying and solidification are adopted to obtain a metal substrate with a primary dip coating layer; (4) spray coating; after the spray coating is completed, first firing is performed; (5) secondary dip coating; after the secondary dip coating is completed, second firing is performed; and cooling to room temperature, the enamel coating with the angle-dependent color metal luster is prepared and formed on the metal substrate. The preparation method solves the problems of uneven distribution of aluminum powder in the aluminum-doped enamel coating and yellowing caused by oxidation, so that the enamel coating has a uniform metal texture, and the high-temperature resistance, corrosion resistance and weather resistance of the enamel coating are greatly improved.