37 results about "Chromium coating" patented technology

A cooktop according to one embodiment of the present disclosure may include a cooktop body, a ceramic glass disposed on the upper part of the cooktop body and having a through-hole formed in a part thereof, a bracket disposed on the through-hole, a glass member coupled to the bracket so as to be disposed within the through-hole, and a display device disposed on the lower side of the glass member. The bracket may include a metal member and a chrome coating layer coated on the metal member.

The invention discloses a method for preparing a hydrophobic coating on an electroplated chromium surface, which comprises the following steps: adding dispersion liquid of nano particles into chromium plating liquid to obtain composite chromium plating liquid, and electroplating a workpiece by using the composite chromium plating liquid to obtain a chromium plating layer, the nano particles are at least one of silicon dioxide, silicon carbide or silicon nitride, silica sol and silicon-fluorine-containing resin are sequentially applied to the chromium plating layer, and the hydrophobic coating is obtained after drying. According to the invention, the nano particles are doped with the electroplated chromium, the chromium plating layer contains Si, so that Si-OH bonds are formed on the surface of the electroplated chromium, silica sol is used as a silicon transition layer, the lower part of the silica sol can form Si-O-Si chemical bonds with Si-OH in the chromium plating layer, and the upper part of the silica sol can form Si-O-Si chemical bonds with Si-OH bonds in silicon-containing fluorine resin; and the binding force of the hydrophobic coating and the chromium plating layer is greatly improved.

The present application discloses a chromium coating modified on the basis of V2O5 and a preparation method therefor. Components of a solid-phase diffusion agent used are: Cr: 30-50%; V2O5: 2-7%; SiC: 30-50%; NH4Cl: 1-5%; La2O3: 0-5%; and Y2O3: 2-5%. The chromium coating prepared in the present application has a uniform structure, a moderate thickness, sufficient diffusion of Cr atoms, and good metallurgical bonding between a diffusion layer and a substrate, is suitable for austenitic steel and high-temperature alloy components which are used in large boilers, oil and gas field transportation pipelines and other workpieces having a large aspect ratio and various complex shapes, and achieves excellent industrial mass production benefits.

The invention discloses a chromium coating crack repairing method and device based on high-pressure water repellent filling, and the method comprises the steps: selecting high-pressure gas according to the working or testing pressure of a part, and extruding a water repellent into a crack gap of a chromium coating by using the selected high-pressure gas; in the extrusion process of the water repellent, the water repellent is driven to reciprocate on the surface of the chromium layer of the part, and dynamic infiltration is achieved; after the crack gap is filled with the water repellent, curing of the water repellent on the surface layer and the root is accelerated in a heating mode, the water repellent is prevented from flowing out, and blocking of the crack gap is achieved; and honing the surface of the chromium layer by using a honing device, removing the water repellent on the surface, and improving the surface roughness. Therefore, the water repellent can permeate into the air hole or the root of the crack to fill the whole crack, so that the compactness of the chromium layer and the qualified rate of the air tightness test of the chromium layer are effectively improved.

The utility model relates to the technical field of rubber balls, and discloses a high-temperature-resistant and wear-resistant vibrating screen rubber ball which comprises a solid ball center, a rubber ball body is connected to the outer surface of the solid ball center, and a wear-resistant mechanism is arranged on the rubber ball body. The wear-resistant mechanism comprises a chloroprene rubber coating, a polyacrylate resin coating, a waterborne polyurethane resin coating, an aluminum oxide ceramic coating, a tungsten carbide ceramic coating, a polytetrafluoroethylene coating and a chromium coating, and the chloroprene rubber coating is connected to the outer surface of the solid ball center. The waterborne polyurethane resin coating has good flexibility, wear resistance and water resistance, can adapt to deformation of the rubber ball in the vibration process, and is not prone to cracking, falling off and other problems at high temperature. And reactive groups can be introduced for crosslinking or compound modification, so that the mechanical property and chemical resistance of the material are further improved.

The utility model relates to a through type position lamp and a vehicle. The through type position lamp comprises a lampshade and a lamp shell. The lampshade comprises a light-transmitting cover and a light shielding cover fully covering the outer surface of the light-transmitting cover. The outer surface of the light shield is provided with a chromium plating layer, and the front side face of the light shield is provided with a narrow-strip-shaped hollowed-out hole extending in the length direction, so that a narrow-strip-shaped light-transmitting area is formed in the hollowed-out hole of the light-transmitting cover. An inserting groove is formed in the side, facing the lampshade, of the lamp shell, the light-transmitting cover extends backwards to be provided with an inserting-connecting extending part exceeding the coverage range of the light-transmitting cover, and the inserting-connecting extending part is embedded into the inserting groove. According to the scheme, the chromium plating layer and the hollowed-out holes are arranged on the light shield, so that the lampshade integrates functions and appearance decoration, the lampshade can serve as an outer part when not turned on and serve as a functional part when turned on, and the delicacy of the whole vehicle and the competitiveness of the product are synchronously improved on the premise of meeting functional requirements.

The invention relates to the technical field of semiconductors, and discloses a chromium coating for a photomask substrate, a preparation method of the chromium coating, a photomask and a semiconductor element, the chromium coating is a pure chromium coating and has a single microstructure or a composite microstructure; wherein the single microstructure comprises any one of an amorphous state, a polycrystalline state and an amorphous-nanocrystalline mixed state; the composite microstructure comprises at least two of an amorphous state, a polycrystalline state and a mixed state; and the mixed state is a transition state microstructure of amorphous polycrystalline transformation. By regulating and controlling the microstructure of the pure chromium target, the chromium coating for the photomask substrate can meet the design target of optical density of unit thickness at the wavelength of 193nm under the condition of ultra-thin thickness, so that the three-dimensional mask effect caused by a thick chromium layer is avoided, and the contradiction of insufficient shading of the thin chromium layer is solved. Meanwhile, the mode based on the pure chromium material assisted by magnetron sputtering current regulation and control does not need a complex reaction gas system, the process window is wide, the reproducibility is good, and the method is suitable for industrial batch production.

The utility model discloses a hydraulic cylinder with good corrosion resistance, and relates to the technical field of hydraulic cylinders. Comprising an outer-layer cylinder barrel, an inner-layer cylinder barrel is installed in the outer-layer cylinder barrel, a closed end cover and a through hole end cover are installed on the two sides of the outer-layer cylinder barrel respectively, and a plurality of fixing rods with threads on the two sides are installed between the closed end cover and the through hole end cover; anti-corrosion sealing assemblies are arranged between the outer-layer cylinder barrel and the inner-layer cylinder barrel and the closed end covers on the two sides and between the inner-layer cylinder barrel and the through hole end covers on the two sides. Through the design that the anti-corrosion medium is filled between the outer-layer cylinder barrel and the inner-layer cylinder barrel, an additional anti-corrosion guarantee is provided for the inner-layer cylinder barrel, even if the piston rod works in a severe environment for a long time, the anti-corrosion performance of the cylinder body can be ensured, and the requirement for working in a complex environment for a long time is met; layer-by-layer protection is realized from the primer to the finishing coat to the chromium plating layer, so that the corrosion resistance is greatly improved, and the problem that the coating is easy to wear and fall off is effectively solved.

The application relates to the technical field of electroplating, and discloses a chromium electroplating process for improving the hardness of a connector terminal, which comprises the following steps: performing surface pretreatment on the connector terminal, removing surface impurities through ultrasonic cleaning and micro-etching treatment; performing heating treatment on the connector terminal; performing electroplating treatment on the connector terminal by using an electroplating solution comprising trivalent chromium salt, boron nitride nanoparticles, ferroferric oxide nanoparticles, nickel ions, sodium dichromate and chromium alloy additives, so as to form a chromium plating layer; performing passivation treatment on the plating layer; performing low-temperature treatment on the plating layer; and spraying a protective layer on the chromium plating layer. Through the trivalent chromium salt and the sodium dichromate, the trivalent chromium salt is used to reduce hexavalent chromium ions into trivalent chromium, the toxicity of the hexavalent chromium is reduced, the sodium dichromate is used to provide a stable chromium source, the deposition of chromium elements in the electroplating process is ensured, the pollution of hexavalent chromium to the environment and the harm of hexavalent chromium to the health of operators are solved, and the environmental protection and safety of the electroplating process are improved.

The utility model provides a sealing nail welding dust hood, relates to the technical field of welding dust hoods, and solves the problems of welding defects and insufficient negative pressure dust collection effect caused by high surface roughness and residual welding ash of the conventional dust hood. The welding dust removal cover comprises a welding dust removal cover body, a welding dust removal cavity is formed in the welding dust removal cover body, and a bonding layer and a smooth surface layer are sequentially arranged on the inner wall of the welding dust removal cavity. The smooth surface layer is a chromium-plated layer, the bonding layer is a sand blasting treatment layer, the surface roughness Ra of the chromium-plated layer is 0.4-0.8 [mu] m, and the thickness of the chromium-plated layer is 5-15 [mu] m. The utility model has the beneficial effects that the welding ash residue is obviously reduced, and the cleaning efficiency is improved.

The present invention relates to a quality inspection system for chromium coating layer of enhanced accident tolerant fuel for nuclear power plants, the quality inspection system allowing rapid transport and inspection of objects to be inspected, and classifying and automatically and separately loading the inspected objects according to the results of the inspection. The quality inspection system according to the present invention comprises an apparatus for feeding objects to be inspected, a rotary transport apparatus, a sorting and loading apparatus, and a control apparatus, wherein the rotary transport apparatus comprises a base unit, first and second rotary transport units, a power generation unit, a power transmission shaft, and a support unit for objects being inspected.

According to the high-erosion-resistance steam turbine blade and the preparation method thereof, nickel-chromium-aluminum-yttrium alloy on the bottom layer is tightly combined with the surface of a base material, and the thermal stress difference between a coating and the base material can be effectively buffered; the middle layer is compounded with titanium carbide through nickel-chromium-aluminum-yttrium alloy, so that smooth performance transition from the bottom layer to the surface layer is realized, the overall toughness of the coating is enhanced, and interlayer cracking is avoided; the composite structure of the tungsten carbide on the surface layer and the nickel-chromium-aluminum-yttrium alloy endows the coating with extremely high hardness, wear resistance and erosion resistance, can enduringly resist erosive wear of water drops and solid particles in steam, prevents pits, pits and cracks from being formed on the surface of the blade, and maintains the integrity of the aerodynamic appearance. Multidirectional upsetting and step-by-step isothermal forging are combined, base material grains are refined, and the structure uniformity is improved; the microstructure is optimized through solid solution aging treatment, and the strength and toughness of the base material are enhanced; according to the composite coating prepared through the atmosphere plasma spraying technology, the binding force of all the layers is excellent, and the defects that a traditional chromium plating layer is prone to stripping, and the binding force of a spraying layer is insufficient are effectively overcome.

The utility model discloses a flexible steel roller, which comprises a roller body and roller shafts, the paired roller shafts are respectively and fixedly arranged at the centers of the two ends of the roller body, the surface of the roller body is coated with a rubber layer, the surface of the rubber layer is coated with a steel belt layer, the surface of the steel belt layer is coated or permeated with a chromium plating layer, and the chromium plating layer is coated or permeated with the rubber layer. The steel roller has the advantages that the rubber layer and the steel belt layer are sequentially arranged on the surface of the roller body, the steel belt layer on the surface guarantees rigidity of the steel roller, the rubber layer on the inner side of the steel belt layer enables the steel roller to have certain flexibility, when the steel roller is used, the steel roller with certain flexibility can well protect materials, especially film materials, and the service life of the steel roller is prolonged. And in addition, the steel roller can be protected to a certain degree, and deformation damage to the steel roller is prevented.

The application relates to a roller repairing chromium plating strength testing device and relates to the field of roller repairing devices, which comprises a table plate, two vertical plates are slidably connected on the table plate and arranged along the length direction of the table plate, the height of the vertical plates is telescopic, control assemblies for clamping rollers are arranged on the two vertical plates, power members for controlling the movement of the two vertical plates are further arranged on the table plate, cleaning assemblies for cleaning the side walls of the rollers are further arranged on the table plate, the cleaning assemblies are located on one side of the control assemblies, the testing device further comprises a cutting assembly, the cutting assembly comprises a blade, the blade is located on one side of the control assemblies, and the blade and the cleaning assemblies are symmetrically distributed on the two sides of the control assemblies. The application has the effect of improving the detection efficiency of the roller chromium plating layer.

The application belongs to the field of transistor devices, and discloses an organic field effect transistor device and a preparation method thereof. The preparation method comprises the following steps: preparing a covalent triazine organic framework nanosheet dispersion liquid by electrochemical exfoliation of a covalent triazine organic framework material, and standing; injecting the covalent triazine organic framework nanosheet dispersion liquid drop by drop onto the liquid surface of ultrapure water, and passing a SiO2 / Si substrate through the interface between the covalent triazine organic framework nanosheet and the ultrapure water to obtain a SiO2 / Si substrate containing triazine covalent organic framework nanosheets; and sequentially evaporating a chromium layer and a gold layer on the SiO2 / Si substrate containing triazine covalent organic framework nanosheets by using a vacuum thermal evaporation coating machine to obtain the organic field effect transistor device. The application is conducive to widening the application range of the organic field effect transistor device prepared according to the covalent triazine organic framework material.

The invention provides electroplating liquid of an electrochemical deposition trivalent chromium coating doped with rare earth elements, a preparation method and a use method of the electroplating liquid and a bathroom product. The electroplating liquid comprises the following components in parts by mass: 1000 parts of water, 20-60 parts of trivalent chromium salt, 0.1-1 part of a rare earth element doping agent, 0.5-5 parts of a transition metal element doping agent, 50-80 parts of a complexing agent, 40-75 parts of conductive salt, 30-60 parts of boric acid, 1-5 parts of a metal cation blackening agent and 0.5-2 parts of a nonionic surfactant. A chromium layer obtained by electroplating a product through the electroplating liquid remarkably improves the corrosion resistance of the product.

The utility model relates to the technical field of chromium plating fixture for metal product production, concretely is a kind of chromium plating fixture for metal product production, including sliding frame, sliding slot, at least two sliding blocks, mounting bracket and clamping assembly, clamping assembly is installed in the bottom of mounting bracket, the clamping assembly includes sliding column, support plate, lift plate and limiting component, metal product parts are fixed on fixture by clamping assembly, when part is clamped, pull sliding column, the movement of sliding column will drive lift plate to move, since part is fixed on lift plate, so the movement of lift plate will gradually immerse part in chromium plating liquid, avoid fixture body contact chromium plating liquid and be plated, chromium plating layer is only deposited on the surface of part, also avoid the oblique or impact type immersion caused by traditional manual holding fixture, ensure that chromium plating layer is evenly attached along the surface of part.

The invention discloses a preparation method of a high velocity oxy-fuel spraying chromium carbide-nickel chromium coating on the surface of a soluble fracturing ball seat, and belongs to the technical field of preparation of wear-resistant and corrosion-resistant coatings by a thermal spraying method. Comprising the following steps: (1) preparation before spraying: drying chromium carbide-nickel chromium powder for thermal spraying in a drying oven; (2) cleaning a substrate: wiping and cleaning a spraying area and an adjacent area of the soluble fracturing ball seat by adopting absolute ethyl alcohol or acetone; (3) sand blasting treatment is conducted, specifically, 30-50-mesh white corundum sand is adopted for conducting sand blasting treatment on the soluble magnesium alloy under the pressure of 0.4-0.6 MPa; (4) high velocity oxy-fuel spraying is conducted, specifically, the chromium carbide-nickel chromium coating is finally prepared through an intermittent and multiple spraying method. The prepared high velocity oxy-fuel chromium carbide-based coating has the characteristics of high hardness, low porosity, wear resistance, erosion resistance and the like, has certain corrosion resistance, can meet the normal service of the soluble fracturing ball seat during fracturing operation, and has certain application value.

The invention relates to a cutting element (1) for a tool chain, comprising a main body (2) and a cutting tooth (3) formed on the main body (2), wherein the cutting tooth (3) at least partially has a chromium coating (10), wherein the chromium coating (10) has a crack density of ≤ 300 cracks per centimeter. The invention also relates to a method for producing a cutting element (1) for a tool chain. The invention further relates to a tool chain and a chain tool.

The utility model provides an alloy fastening screw for automotive trim, which relates to the field of fastening screws for automotive trim, and comprises a head component, a screw rod component, an umbrella-shaped head, a cross-shaped groove, a planar notch and a round hole, the cross-shaped groove and the planar notch are used for being matched with different mounting tools, the round hole is formed in the bottom of the umbrella-shaped head, and the screw rod component comprises a screw rod and a thread positioned at the lower end of the screw rod. The screw rod assembly adopts an aluminum alloy matrix, and the surface of the screw rod assembly is compounded with a chromium plating layer and a nickel plating layer; the aluminum alloy base body is adopted in the screw rod assembly, the chromium plating layer and the nickel plating layer are composited on the surface of the aluminum alloy base body, the chromium plating layer and the nickel plating layer have good corrosion resistance, the screw can be prevented from rusting and corrosion in the environment of automotive trim, the service life of the screw is prolonged, and the gasket assembly comprises the anti-skid pad, the rubber pad, the installation groove, the rod sleeve and the anti-skid lines. The contact area of the screw and the installation face is increased, the friction force is improved through the anti-skid lines, the screw can be prevented from loosening through the combined action, and the stability of the screw after installation is guaranteed.

The invention provides a defect inspection method for a chromium coating zirconium alloy cladding and an oxidation device thereof.The defect inspection method comprises the following steps that S1, a whole chromium coating zirconium alloy cladding pipe to be inspected is subjected to pre-oxidation treatment, so that a zirconium matrix located below microcracks in a chromium coating is subjected to local preferential oxidation, and then the chromium coating zirconium alloy cladding pipe is subjected to oxidation treatment; volume expansion and density difference are formed; and S2, scanning the whole pre-oxidized chromium coating zirconium alloy cladding tube by adopting high-resolution industrial CT (Computed Tomography), ultrasonic or eddy current detection, identifying an abnormal low-density region caused by local oxidation, and positioning the position of a penetrability defect in the original coating. According to the invention, through full-process detection of pre-oxidation amplification-CT identification, microscopic defect detection on the macro scale is realized, the detection sensitivity and reliability are improved, and the strict requirements on quality control of key parts in anti-accident fuel research and development are met.

The utility model relates to a high-temperature alloy chromium plating clamp, which is suitable for chromium plating of inner spherical surfaces of small complex parts, and comprises a cathode clamping bush component, a cathode clamping bush component, a high-temperature alloy clamping bush component and a high-temperature alloy clamping bush component, wherein the cathode clamping bush component is used for sealing and clamping a plurality of parts in the vertical direction and is used as a cathode to be electrically connected with a cathode end of a chromium plating device; the pictographic anode fixing seats are used for mounting an anode bar, one end of the anode bar is electrically connected with an anode end of a chromium plating device, and the pictographic anode fixing seats are respectively arranged on the top surface and the bottom surface of the cathode clamping bush assembly and are placed in a solution tank of the chromium plating device so as to perform chromium plating on the inner spherical surface of a part; the binding force problem of peeling and falling of the chromium coating of the high-temperature alloy small complex part is solved, and the problem of accurate control over the thickness of the chromium coating is solved.

The invention discloses a defect repairing device for a chromium plating layer of a cold rolling roller, and relates to the technical field of metal rolling equipment. Comprising a working rack, a first supporting roller, a carrying roller, a second supporting roller, a cold rolling roller, a repairing device and a protective cover. The repairing device comprises a support, a groove, a driving motor, a screw rod, a groove block and a composite repairing executing mechanism. The support is fixed to the side portion of the cold roller and can drive the composite repairing executing mechanism to move in the radial direction through the driving motor. The composite repair executing mechanism is integrated with three supporting structures capable of synchronously and axially moving, the three supporting structures bear the online detection module, the laser cleaning head and the cold spraying deposition head correspondingly, and each supporting structure is provided with a loading assembly capable of automatically adjusting the angle. During repairing, the repairing executing mechanism is close to the cold roller, the defects are scanned and recognized, and the laser cleaning head and the cold spraying deposition head are driven to conduct cleaning and deposition repairing on the defects in sequence. According to the method, online and automatic repairing of the cold roller is achieved, the maintenance time is shortened, and the continuity of rolling production is guaranteed.

The present invention relates to a chromium-coated zirconium cladding tube supply device with a rotary encoder, the device allowing accurate measurement of rotation of the object to be inspected due to the encoder installed so as not to be affected by the thickness of a chromium plating layer. To this end, the chromium-coated zirconium cladding tube supply device with a rotary encoder comprises a cladding tube feed unit, a position alignment unit, and a rotation detection unit.

The invention relates to a cutting element (1) for a tool chain with a base body (2) and a cutting tooth (3) formed on the base body (2), wherein the cutting tooth (3) has at least a partial chrome coating (10), wherein the chrome coating (10) has a crack density of ≤ 300 cracks per centimeter. The invention further relates to a method for manufacturing a cutting element (1) for a tool chain. The invention further relates to a tool chain and a chain tool.

The utility model belongs to the technical field of injection molds, and particularly relates to a HEPA ring injection mold convenient for quick demolding, which comprises an upper fixing plate, a female mold plate is fixedly mounted on the left side of the upper fixing plate through screws, a male mold plate is arranged on the side surface of the female mold plate, and an ejection mechanism and a cooling mechanism are arranged in the male mold plate. According to the HEPA ring injection mold convenient to quickly demold, on one hand, the surface of the additionally arranged vibrating plate is subjected to hard chromium plating treatment, and a chromium plating layer of 20-50 microns not only enhances wear resistance, resists friction loss and prolongs the service life by virtue of high hardness, but also reduces the friction coefficient with a HEPA ring by virtue of high smoothness, and improves the demolding efficiency and the product quality; and the performance of the vibrating plate is stabilized by good corrosion resistance. And on the other hand, a spring I and a spring II in the ejection mechanism act together, so that an elastic sheet group triggers a vibration plate to vibrate, the adhesion problem of the HEPA ring and the mold is solved, product damage is avoided, and the vibration plate is matched with the male mold core in shape, so that demolding is smoother.

The utility model provides an inner shuttle frame of a rotating shuttle, which comprises an inner shuttle frame body, the inner shuttle frame body comprises a guide rail which is arranged on the inner shuttle frame and is partially or completely plated with a DLC coating, and the surface of the part of the guide rail, which is completely or at least matched with a guide groove of an outer shuttle frame, is provided with a DLC coating. The inner shuttle frame body further comprises an outer wall which is completely plated with a chromium coating except for the guide rail; or the inner shuttle frame body is at least provided with a chromium-plated coating on the wire winding and passing surface part. According to the utility model, the DLC coating is plated on the guide rail, and the other parts are plated with chromium, so that the hardness is ensured, and meanwhile, the off-line is convenient.

The application discloses a kind of cold-rolled roller chrome plating layer defect repair devices, it is related to metal rolling equipment technical field.The device includes workbench, first supporting roll, load roll, second supporting roll, cold-rolled roller, repair device and shroud;Repair device includes support, recess, driving motor, screw rod, slot block and composite repair execution mechanism.Support is fixed to the side of cold-rolled roller, and composite repair execution mechanism can be moved radially by driving motor.Three load-bearing structures that can move synchronously in axial direction are integrated in composite repair execution mechanism, respectively carrying online detection module, laser cleaning head and cold spraying deposition head, and loading assembly that can automatically adjust angle is arranged on each load-bearing structure.It is close to cold-rolled roller when repairing, scanning and identifying defects, and driving laser cleaning head and cold spraying deposition head to clean and deposit repair defects in turn.The application realizes the online, automatic repair of cold-rolled roller, shortens maintenance time, and guarantees the continuity of rolling production.

A motor vehicle bodywork element comprising a body made of a transparent material comprising an internal face and an external face and a light source placed behind the internal face of the body, wherein the internal face is covered by a layer of metal deposit, said layer of metal deposit being covered by a layer of an opaque material, both layers being etched so as to form a pattern visible from the external face of the body, wherein the layer of opaque material is a second layer of metal deposit darker than the metal of the first layer.

The utility model relates to the technical field of accessories of zip-top can conveying equipment, in particular to a one-way machine air plate for manufacturing zip-top cans, which comprises an air plate body, a first inclined air hole area is arranged on the air plate body, the first inclined air hole area is U-shaped, a second inclined air hole area is arranged on the lower portion of the inner side of the first inclined air hole area, and the second inclined air hole area is U-shaped. An air exhaust area is arranged on one side of the second inclined air hole area, a plurality of inclined air outlet holes are formed in the first inclined air hole area and the second inclined air hole area, a plurality of air exhaust holes are formed in the air exhaust area, and a chromium plating layer is arranged on the surface of the side, close to the air outlet ends of the inclined air outlet holes, of the air plate body. According to the air plate of the one-way machine, air conveying can be conveniently carried out on a tank body, the chromium plating layer arranged on the surface of the air plate body can improve the abrasion resistance and hardness of the contact face, in the contact conveying process of the chromium plating layer and the tank body, the phenomenon of rapid scraping is prevented, the service life is prolonged, the frequency of replacing the air plate is reduced, and the working efficiency is improved.