272 results about "Salt spray test" patented technology

The invention relates to the technical field of wind power blade material testing, and discloses a testing device and method for a salt spray corrosion test of a wind power blade composite material layer. According to the method, wind power blade composite material coating preparation parameters are obtained, and coating basic information is provided for subsequent performance evaluation; based on preset salt spray test environment control parameters, dynamic salt spray environment simulation conditions are generated so as to better fit the actual outdoor environment; then, a multi-sensor coupling monitoring network is constructed, real-time data acquisition is conducted on the corrosion process of the composite material coating, and comprehensive tracking of the corrosion process is achieved; processing real-time data by utilizing a corrosion characteristic analysis algorithm, generating a multi-dimensional corrosion characteristic index, and quantitatively representing the corrosion condition of the coating; and finally, evaluating the anti-corrosion stability of the new material coating in combination with the coating characteristic parameters and the multi-dimensional corrosion characteristic indexes. According to the method, the corrosion resistance of the coating in the actual environment can be more accurately reflected, and support is provided for research, development and application of the composite coating of the wind power blade.

The invention discloses a coating, a preparation method and application, and relates to the technical field of anticorrosive coatings. A dry film of the coating comprises 0.1 wt%-6wt% of a lamellar filler; the lamellar filler is prepared by loading magnetic nanoparticles on the surfaces of two-dimensional nanoparticles and coating a layer of high-molecular polymer. After the coating forms a film, a specific magnetic control orientation curing method is matched, so that high dispersion stability and planar orientation arrangement of the two-dimensional nano filler in a resin matrix are realized, and corrosion of water and oxygen to a base material can be effectively blocked. When the thickness of the coating dry film is only 1-2 microns, the coating dry film still has no obvious corrosion phenomenon after being subjected to a neutral salt spray test for 2000 hours. The metal base material with the thin coating thickness has heat conductivity, corrosion resistance and weather resistance, the preparation process is simple, the cost is low, and the metal base material has extremely high market application value.

The invention relates to the technical field of glass detection, in particular to a salt spray test device for optical glass performance detection and a test method of the salt spray test device. According to the technical scheme, a plurality of placement frames distributed at equal intervals are installed in a test box body, each placement frame comprises a rotatable frame body, air guide plates are arranged on the two sides of the test box body, a water absorption plate is arranged on the top face of a cover body, arc-shaped flow guide plates are installed at the corners of the cover body in a sliding mode, and the arc-shaped flow guide plates and the water absorption plates are arranged in an attached mode; a pushing piece is arranged on the arc-shaped flow guide plate, and a water diversion piece is arranged in the water absorption plate. The air deflectors and the windward groove bodies are installed on the two sides of the test box body, air is introduced, the guiding and drainage effects on salt mist are formed, rapid diffusion of the salt mist is guaranteed, in addition, when the frame body rotates, the air deflectors incline, and therefore the salt mist can be rapidly dispersed. Therefore, the changed direction can still guide the salt mist airflow to flow towards the optical glass experiment sheet in a path.

The invention belongs to the technical field of salt spray tests, and particularly relates to a test device and method for simulating hot corrosion of an engine turbine blade material, and the method comprises the following steps: after a sample is cleaned and dried, a nozzle is controlled by a mechanical arm to atomize a saturated salt solution, and the saturated salt solution is precisely sputtered to the surface of the sample preheated to 300-500 DEG C to form a uniform salt film; the sample is placed in a heating furnace at the temperature of 600-1000 DEG C to be subjected to heat preservation for 50-55 min and then cooled by compressed air for 5-10 min, and cold and hot circulation A corrosion kinetic curve is drawn based on the unit area weight increment, corrosion products are removed through a molten alkali electrolysis method, and the hot corrosion rate is calculated. The device comprises a groove type test bed with a high-temperature-resistant coating, a slit type nozzle driven by a mechanical arm, an infrared heating device and a cold and hot circulation system. According to the method, the salt film is deposited through precise position control of the mechanical arm, the cold and hot alternating working condition is simulated, the problems that a traditional salt coating method is not uniform and a salt leaching method is distorted in environment are solved by combining corrosion dynamics and microscopic characteristic analysis, and scientific evaluation of the corrosion resistance of the aero-engine blade material is achieved.

The invention discloses preparation and application of a protective anticorrosive material for components of wind power equipment and photovoltaic equipment. The material is prepared by mixing and stirring a nano composite epoxy resin matrix, graphene nanosheets, nano zinc powder and other components. During application, the coating is coated after the equipment surface is pretreated, and is cured in a suitable environment. Compared with the prior art, the coating has the advantages that under the synergistic effect of all the components, the coating is free of corrosion after a salt spray test lasts for more than 5000 hours, the anti-aging time lasts for more than 1000 hours due to the nanoparticle and cured network structure, under the synergistic effect of the graphene nanosheets, the nano white carbon black and other components, the abrasion of 100 parts of the protective anti-corrosion material is 2% or below, and the environment-friendly curing agent and the auxiliaries are adopted. The material is simple and convenient in preparation and application process, is suitable for parts such as wind power towers, blades and photovoltaic brackets, and can prolong the service life of equipment, reduce the maintenance cost and promote the development of the clean energy industry.

The invention discloses an automobile part accelerated life test method and system, and the method comprises the steps: setting an extreme temperature cycle: setting a cycle of keeping a low temperature of-40 DEG C for 30 minutes and keeping a high temperature of 180 DEG C for 30 minutes, and setting a temperature change rate of 15 DEG C / min; a multi-physics field coupling test: in an extreme temperature cycle process, synchronously carrying out a resistance test, a withstand voltage test, a turn-to-turn insulation test, a vibration test, a humidity test and a salt spray test, and comprehensively evaluating the electrical, mechanical and environmental adaptability of the parts; multi-scale numerical simulation: establishing material-level, part-level and system-level coupling models, and predicting life distribution of parts; and data-driven optimization: based on historical test data and a numerical simulation result, establishing an acceleration model, dynamically adjusting a temperature cycle parameter and a stress level, and realizing maximization of test efficiency. Based on extreme temperature circulation (-40 DEG C / 30 minutes to 180 DEG C / 30 minutes) and multi-physical field coupling strengthening stress testing, the test time is shortened by 70% or above, and the evaluation error is smaller than or equal to + / -5%.

The invention provides a long-acting anticorrosive epoxy powder coating and a preparation method thereof. The coating comprises epoxy resin, polyester resin, thiadiazole corrosion inhibitor loaded cerium-doped hydrotalcite composite particles, silane modified mica iron oxide, zinc phosphate, barium sulfate and the like. The core innovation lies in that 2-amino-5-(4-hydroxyphenyl)-1, 3, 4-thiadiazole corrosion inhibitor molecules are designed and synthesized, the molecules are loaded between cerium-doped magnesium-aluminum hydrotalcite nano container layers through an anion exchange method, corrosion environment pH responsive gradient release is achieved, a coating constructs a passive shielding, active corrosion inhibition and interface anchoring triple protection mechanism in the coating, and the corrosion resistance of the coating is improved. The neutral salt spray test resistance exceeds 2000h, and the coating is suitable for long-acting corrosion protection of iron accessories and cable bridges.

The invention discloses a salt spray test device for simulating a salt spray environment, and relates to the technical field of material analysis equipment. The device comprises a main box body, a box cover, an ultrasonic salt mist generating device, an axial flow fan, an airflow distributor, an airflow guide device, a salt mist metering device, a control device panel and the like, wherein the main box body is provided with an inner cavity and a top sealing water tank; an auxiliary box body is arranged on one side of the main box body, and the auxiliary box body is provided with an inner cavity and is communicated with the inner cavity of the main box body; the upper end of the auxiliary box body is provided with a sunken saline water tank for storing saline water; the bottom of the ultrasonic salt mist generating device is communicated with the salt water tank through a conduit. Through the innovative structure, many problems of a traditional test are solved, salt mist distribution is optimized, and uniformity is ensured; temperature and humidity are accurately controlled, and simulation is more real; an ultraviolet light source is introduced, the illumination period is precisely regulated and controlled, and the device fits the natural environment; the corrosion resistance of the material can be comprehensively and accurately evaluated, reliable test support is provided for research, development and application of the material, and product quality and reliability are improved.

The invention relates to an anodizing method suitable for a titanium alloy cylindrical part, belongs to the technical field of metal surface treatment, and solves at least one of the problems that an oxidation film formed by anodizing the titanium alloy cylindrical part is insufficient in density and hardness, is locally loosened and is easy to fall off and the like in the prior art. According to the anodizing method suitable for the titanium alloy cylindrical part, in the anodizing process, the titanium alloy cylindrical part continuously rotates in one direction along the axis in an anodizing solution, and the rotating linear speed and voltage are increased in a stepped mode. A surface oxidation film of the titanium alloy cylindrical part prepared through the method is high in compactness, the porosity is smaller than or equal to 24%, the hardness is high and ranges from 250 HV to 300 HV, the problem of local loosening and falling is almost avoided, the titanium alloy part has better wear resistance and anti-corrosion effect, according to testing of GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, after 500 hours of neutral salt spray test, the corrosion resistance of the titanium alloy cylindrical part is improved, and the corrosion resistance of the titanium alloy cylindrical part is improved. And the surface of the film layer has no corrosion sign.

The application relates to a motor shell rust spot identification method, device, equipment and computer readable medium. The method comprises the following steps: acquiring a first motor shell image before a salt spray test and a second motor shell image after the salt spray test; performing image registration on the first motor shell image and the second motor shell image to register a rust spot area in the first motor shell image and a rust spot area in the second motor shell image and obtain an effective motor shell image; performing difference detection on the effective motor shell images before and after the salt spray test, extracting a new rust spot area based on the difference detection result; constructing a rust spot identification model according to the new rust spot area and the corresponding motor shell image; identifying the rust spot type of the new rust spot area based on the rust spot identification model, and calculating the area corresponding to the new rust spot area. The application solves the problem that manual motor shell rust spot identification detection leads to low detection efficiency and accuracy.

The utility model discloses a stainless steel pipe corrosion resistance detection lifting appliance which comprises a flat hook hung on a storage rod of a salt spray testing machine, an anti-skid rubber strip is fixed on the inner side of the flat hook, a connecting frame is fixed at the lower end of the flat hook, a hook-shaped frame is rotatably connected to the bottom of the connecting frame, and a horizontal knob is fixed on the hook-shaped frame. A first locking spring arranged on the surface of the hook-shaped frame in a sleeving mode is installed between the horizontal rotary knob and the connecting frame. The flat hook which can be stably installed on the object placing rod is used for hanging, the hook-shaped frame on the lower portion can rotate around the vertical axis and is supported by the first locking spring to achieve elastic self-locking, the clamping plate clamps and fixes a stainless steel pipe through the pipe clamp, and the pipe clamp can rotate around the connecting shaft and is provided with the second locking spring to achieve elastic self-locking. According to the device, the stainless steel pipe can be stably clamped and fixed, the stainless steel pipe can be closer to the actual installation condition to be kept horizontal or vertical without shaking, the hanging stability is prevented from being influenced by salt mist liquid drops and airflow, and therefore it is ensured that the test result is more scientific and more accurate.

To provide a highly convenient repair support device or the like considering the influence of salt damage.SOLUTION: A repair support device 10 includes a processing unit 2 that specifies a salt damage area division of a position of a facility to be repaired on the basis of latitude and longitude of the facility and a salt damage map 12 indicating the salt damage area division, and calculates at least one of a construction cost when the facility is repaired and an endurance time of the facility against salt damage after the repair on the basis of the salt damage area division. The processing unit 2 calculates the endurance time of the repaired facility against the salt damage based on the endurance time of the test piece against the predetermined salt spray test corresponding to the salt damage area section.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of temperature monitoring, in particular to a salt-fog-resistant temperature sensing detector suitable for an offshore wind turbine, which solves the problems in the background technology and comprises a detector base, a shell is mounted on the detector base and detachably connected with a protective cover, a circuit board is mounted in the shell, and the protective cover is detachably connected with the shell. A temperature sensing element is installed on the circuit board, a protective layer is arranged on the surface of the circuit board, an AB component silica gel layer is arranged on the protective layer except the surface of the temperature sensing element, a through hole is formed in the protective cover, a wire penetrating hole is formed in the detector base, and a wire harness is installed in the wire penetrating hole in a penetrating mode. A dispensing layer is arranged between the threading hole and the wire harness, and stainless steel hardware is arranged on the detector base and fixed to the fan cabin wall through bolts. According to the utility model, the detector can realize excellent corrosion resistance without failure in a 100-hour neutral salt spray test in an offshore high-salt-spray environment.

This invention discloses a water-based epoxy resin coating for 6005 aluminum alloy that prevents sagging and cracking, and its preparation method. The coating is a two-component system. Component A contains water-based epoxy resin emulsion, CTBN-modified toughening resin, composite anti-rust pigments, flake-shaped shielding fillers, and compounded thixotropic rheology agents, etc. Component B is a water-based amine curing agent. This coating can solve the sagging and cracking problems of existing coatings on 6005 aluminum alloy, achieving a coating adhesion grade of 0, a neutral salt spray test of ≥900h, and VOC ≤42g / L. It meets the stringent protection requirements of 6005 aluminum alloy and has excellent prospects for industrial application.

The invention discloses a rapid evaluation method for atmospheric corrosion resistance of weathering resistant steel and application thereof, the evaluation method comprises the following steps: S1, calculating an atmospheric corrosion resistance index I of the weathering resistant steel based on chemical components of the weathering resistant steel according to the following formula: I = 26.01 Cu + 3.88 Ni + 1.20 Cr + 1.49 Si + 17.28 P-7. 29 Cu * Ni-9. 10 Ni * P-33.39 (Cu) 2, and if I is greater than or equal to 6.2, entering subsequent test evaluation; s2, performing a neutral salt spray test on the sample meeting the step S1 for 72 hours, then calculating the salt spray corrosion rate, and if the salt spray corrosion rate is less than or equal to 1.16 g / (m < 2 >. H), judging that the sample is qualified; s3, if the weathering resistant steel is used in the high-humidity atmospheric environment, a periodic infiltration test needs to be carried out, and if the periodic infiltration corrosion rate is smaller than or equal to 1.958 g / (m < 2 >. H), it is judged that the weathering resistant steel is applicable; and S4, if the weathering resistant steel is used for a typical atmospheric environment with high temperature, high humidity and serious corrosion, an atmospheric exposure test needs to be performed for 12 months, and if the stable corrosion rate is smaller than or equal to 0.031 g / (m < 2 >. H), it is judged that the weathering resistant steel is applicable. The weather-resistant steel corrosion performance evaluation system is established by analyzing the atmospheric corrosion resistance index of the weather-resistant steel and the corrosion results of different materials in different typical environments.

The invention discloses a steel rope sling anti-corrosion performance detection device convenient to operate, and relates to the technical field of steel rope sling anti-corrosion performance detection.The steel rope sling anti-corrosion performance detection device comprises a salt spray test box and a driving assembly, the driving assembly is installed on one side of the salt spray test box, and the driving assembly comprises a mounting plate fixedly installed at the top end of one side of the salt spray test box; and a bearing seat is fixedly mounted on the inner side of the notch of the mounting plate. According to the convenient-to-operate equipment for detecting the corrosion resistance of the steel rope sling, only one motor is arranged, so that torque deformation of a steel rope can be artificially produced when a driving shaft drives a front-end driving gear and a tail-end gear set I to rotate, and then a key shaft I and a transmission shaft rotate in opposite directions; a reciprocating bending application scene of the steel rope is simulated through reciprocating swing of the lower floating frame driven by the cam, a protective layer on the surface of the steel rope is damaged similar to actual service through mechanical linkage, and then it is guaranteed that a subsequent salt spray test result is close to an actual failure path of the rigging.

The utility model discloses a kind of salt fog testing machine of high sealing property, it is related to field, including testing machine box, connecting hinge, sealing cover and control box, the connecting hinge is fixedly installed in the rear end of testing machine box, the sealing cover is movably installed in the outside of connecting hinge, the control box is fixedly installed in one side of testing machine box, the top of sealing cover is fixedly installed with agitating mechanism.The utility model has realized the dynamic, even spraying of salt fog in test box space, cooperate agitating mechanism and continuously rotate in the middle of two salt fog nozzles, effectively scatter, agitate the salt fog of spraying, prevent salt fog local gathering or settling too fast, further ensure the high uniformity of salt fog concentration and distribution in entire test space, significantly improve the coverage uniformity and result reliability of salt fog test, make the corrosion environment that test sample each part suffers more consistent, test data more accurate, so that salt fog testing machine promotes salt fog distribution uniformity and test accuracy.

The application discloses a tannin acid-based epoxy resin and anticorrosive paint and relates to the technical field of paint. The tannin acid and the epoxy resin are combined through chemical reaction to generate a novel tannin acid-based epoxy resin. The tannin acid-based epoxy resin retains the function of generating chelate with iron rust, meanwhile, multiple epoxy structures in the structure generate thermosetting high-density crosslinked polymer structures after curing with a curing agent, the compactness of the paint film is greatly improved, the further corrosion of the corrosion medium is hindered, and the long-term effectiveness of the low-surface-treatment anticorrosive paint is ensured. Experimental results show that the adhesion of the tannin acid-based epoxy resin to the anticorrosive paint and the base material exceeds 13 MPa, and the neutral salt spray test reaches 4500 hours.

The utility model discloses a cyanide-free imitation gold plating layer structure of an aluminum alloy part, which comprises an aluminum alloy substrate, and a chemical zinc deposition layer, a citrate pre-nickel plating layer, a nickel-copper alloy plating layer, a bright nickel plating layer, a cyanide-free imitation gold plating layer and an electrophoretic varnish coating which are sequentially prepared on the aluminum alloy substrate from inside to outside. According to the cyanide-free gold-imitating plating layer structure of the aluminum alloy part disclosed by the utility model, the binding force of the plating layer is tested by a thermal shock method according to the GB / T 5270-2005'metal covering layer electro-deposition and chemical deposition layer adhesion strength test method on a metal matrix ', the binding force meets the standard requirement, an acetate fog test is carried out for 168 hours according to the GB / T 10125-2021'artificial atmosphere corrosion test and salt spray test', and the binding force meets the standard requirement. And no red corrosives are generated on the surface of a plated part, and the plating layer structure has good corrosion resistance.

The utility model discloses an automobile wire rod salt spray test box, and belongs to the technical field of automobile wire rod tests. The device mainly comprises a test box; sliding blocks are mounted on the guide rods in a sliding manner; a sealing block is installed on the side face of the supporting plate, and two sets of grooves are formed in the supporting plate; a sliding block is mounted on the sliding rail in a sliding manner; three clamping sets and a supporting ring are installed on the installation frame, a pressing ring is hinged to the supporting ring, butt joint plates are arranged at one end of the pressing ring and one end of the supporting ring, a notch is formed in the butt joint plate on the pressing ring, a rotating shaft is hinged to the butt joint plate on the supporting ring, and a fastener is connected to the rotating shaft. And a second clamping unit. According to the automobile wire rod salt spray test box, through the arrangement of the supporting plate, the sealing block, the guide rod, the sliding block, the groove, the sliding rail, the sliding block, the mounting frame, the supporting ring, the pressing ring, the butt joint plate and the rotating shaft, a tested automobile wire rod does not need to be manually taken out, and meanwhile the corrosion condition of the automobile wire cable is conveniently observed.

The application provides a high-low temperature composite environment sensitive fracture test system, which comprises a fracture testing machine, a high-low temperature composite salt spray test box and a main control cabinet; the test cavity of the high-low temperature composite salt spray test box is arranged in the environment sensitive fracture testing machine; a test piece is in the test cavity of the high-low temperature composite salt spray test box, a high-low temperature alternating corrosion environment is realized through a wet heat module, a low temperature module and a spraying device; a salt spray, a wet heat, a drying and a low temperature test section are set through a control system, the time and the cycle number of each test section are adjusted, a high-low temperature composite salt spray environment is formed, and the environment sensitive fracture test under a multi-factor coupling environment can be realized in cooperation with the environment sensitive fracture testing machine. The application has a flexible structure, a large adjustable range, high test efficiency, saves test space, can simulate the real service environment according to the service environment of the material test piece under different working conditions, adjust the environment test parameters, simulate the real service environment, and multi-levelly examine the environment sensitive fracture performance of the material.

This invention provides a water-based paint composition that exhibits rust-preventive properties on hot-dip galvanized surfaces even in harsh environments such as salt spray tests. [Solution] An aqueous paint composition comprising the following components (A) to (C). (A) Ingredients: (meth)acrylic emulsion (B) Ingredients: Phosphate-based rust inhibitor (C) Component: Particles having silanol groups on their surface

The utility model belongs to the technical field of salt spray test articles, and discloses a salt spray test sample placing tool which comprises a base and a supporting assembly. The base is provided with a plurality of clamping grooves, the clamping grooves obliquely extend upwards at a preset angle, and the clamping grooves are configured to be used for inserting samples. The supporting assembly comprises a first supporting piece, a second supporting piece and a third supporting piece which are all inserted into the clamping groove. A plurality of insertion holes are formed in the first supporting piece, and the insertion holes are configured to be used for insertion of samples. A plurality of bearing supports are arranged on the second supporting piece, and the bearing supports are configured to be used for bearing samples. A net-shaped structure is arranged on the third supporting piece, and the net-shaped structure is configured to be used for supporting a sample. The placing tool for the salt spray test sample can be used for placing samples with different sizes and different shapes, ensures that the samples are obliquely placed at a preset angle, and ensures the accuracy of a test result.

The invention discloses a salt spray testing machine for MC nylon wheel quality inspection. The salt spray testing machine comprises a test chamber, a salt mist generator is fixedly installed in the test room, two nylon wheel placing assemblies are symmetrically arranged with the salt mist generator as the center, and each nylon wheel placing assembly comprises a first rotating disc and a second rotating disc which are oppositely arranged; a plurality of placing rods are detachably mounted between the rotary table I and the rotary table II through locking assemblies, and MC nylon wheels are arranged on the placing rods in a sleeving manner; the MC nylon wheels are arranged on the placing rods in a sleeving mode to conduct the salt spray experiment, the salt spray experiment is very convenient, a large number of MC nylon wheels can be rapidly taken and placed at a time, the intervals of the MC nylon wheels can be mutually adjusted, overlapping does not exist between the MC nylon wheels, the test dead angles are reduced, and the test result is more accurate.

The invention discloses a preparation method of a nitrogen-reinforced high-hardness corrosion-resistant 17-4ph material. The preparation method comprises the steps of mixing, injection molding, degreasing, nitrogen sintering and heat treatment. Through in-situ nitrogen solid solution strengthening, a strengthened martensite matrix structure is obtained. The relative density of the obtained material is larger than or equal to 97%, the Hrc hardness is larger than or equal to 46, the tensile strength is larger than or equal to 1500 MPa, the yield strength is larger than or equal to 1200 MPa, the ductility is larger than or equal to 5%, the neutral salt spray test corrosion resistance time is larger than or equal to 48 h, and the material is suitable for surgical robots and other high-end medical instruments.

The utility model discloses a salt spray testing machine with a storage rack, and relates to the technical field of salt spray testing machines. The device comprises a box body, a storage rack is arranged on the lower side of the inner wall of the box body, a fixing plate is arranged on the upper side of the storage rack, a rotating rod is rotationally matched with one side of the fixing plate, a first clamping ring is arranged on one side of the rotating rod, a driving box is arranged on one side of the storage rack, and a double-end motor is arranged on one side of the inner wall of the driving box. And the upper end of the double-head motor is fixedly connected with a first driving bevel gear. According to the utility model, through the arrangement of the double-end motor, the first clamping ring and the tightening assembly, an object can be clamped through the first clamping ring and the tightening assembly, and then the double-end motor is started to drive the rotating rod and the first clamping ring to rotate, so that the object needing to be tested after being fixed is turned over; therefore, the surfaces of different parts can be uniformly eroded by salt mist, and the accuracy of atomization testing is improved.

The application discloses a potassium chloride zinc-iron alloy plating solution and a plating process, and the plating solution composition and process parameters are as follows: zinc chloride 50-70 g / L, ferrous chloride tetrahydrate 2-12 g / L, potassium chloride 180-220 g / L, boric acid 25-35 g / L, complexing agent 8-40 g / L, brightener 0.1-0.2 mL / L, auxiliary agent 20-30 mL / L, plating solution pH value 4.5-5.6, plating bath temperature 15-30 DEG C, cathode current density 1-3 A / dm 2 , and cathode moving speed 3-5 m / min. The zinc-iron alloy sample prepared by the application and sealed by trivalent chromium blue-white passivation and graphene modified sealing agent has no white rust on the surface after neutral salt spray test for 480 h according to GB / T 10125-2021 "Salt Spray Test for Artificial Atmosphere Corrosion Test", and the plating layer has excellent corrosion resistance.

The invention provides a processing method for a shell of an aerosol generating device and the aerosol generating device. The method comprises the steps that a containing part is arranged on the surface of the shell; dripping a curing medium into the accommodating part through an ink dripping process; and curing the curing medium. The curing medium is arranged in the containing part on the surface of the shell through the ink dripping technology, the curing layer is formed after the curing medium is cured, the curing layer located in the containing part is not prone to falling off and being abraded off, the surface is smooth and attractive, and therefore when a paper tape friction test, an alcohol friction test, a salt mist test, a water boiling test and other tests are conducted on the surface of the shell of the aerosol generating device, the testing efficiency is improved. And abnormal risks such as falling of a curing layer, wearing-through and base exposure are not easy to occur.

The utility model discloses a protective layer structure for coating an aluminum alloy part with electrophoretic paint. The protective layer structure comprises an aluminum alloy substrate, and a trivalent chromium passivation film and an electrophoretic paint coating which are sequentially prepared on the aluminum alloy substrate from inside to outside. The binding force is tested by a thermal shock method according to GB / T 5270-2005 Metal Covering Layer Electro-Deposition and Chemical Deposition Layer Adhesion Strength Test Method on Metal Matrix, the prepared protective layer is free of blistering and shedding, and the binding force meets the standard requirement. A neutral salt spray test is carried out for 600 h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, the surface of a sample piece is free of rust, and the prepared protective layer has good corrosion resistance. The protective layer structure for coating the electrophoretic paint on the aluminum alloy part, disclosed by the utility model, has a good market prospect.

The invention provides a high-toughness corrosion-resistant Mg-Al-Zn magnesium alloy and a preparation method thereof, belongs to the technical field of magnesium alloy materials, and solves the technical problem that in the prior art, the strength, the corrosion resistance and the formability of a traditional magnesium alloy cannot be considered at the same time. The invention relates to a high-toughness corrosion-resistant Mg-Al-Zn series magnesium alloy. The magnesium alloy comprises the following components in percentage by weight: 4.00%-6.00% of Al, 0.80%-1.00% of Zn, 1.60%-2.00% of Sc, 0.15%-0.50% of Mn and the balance of Mg and inevitable impurities. According to the Mg-Al-Zn series magnesium alloy, the 7-day neutral salt spray test weightlessness corrosion rate is 3-5 mm / y, the yield strength is 170-180 MPa, the tensile strength is 320-330 MPa, the elongation is 9-11%, and the Mg-Al-Zn series magnesium alloy has the high toughness and corrosion resistance and can be suitable for serving parts with the high strength requirement under the severe environment condition.