163 results about "Corrosion testing" patented technology

The invention discloses a scanning electrochemical microscope in-situ stress corrosion testing device and method, and belongs to the technical field of material stress corrosion testing, and the device comprises a base, a power transmission module, a clamping module, a corrosion module, a signal acquisition module and a scanning electrochemical microscope module. Slow strain rate stretching of a sample is achieved through a servo motor, a planetary gear speed reducer and a transmission mechanism, the clamping module is integrated with a force sensor to monitor loads in real time, the corrosion module provides a temperature-controllable corrosion environment, and the scanning electrochemical microscope module achieves electrochemical scanning of the surface of the sample. The device can synchronously obtain a load-deformation curve, corrosion morphology and microcell electrochemical information under stress-corrosion-temperature multi-field coupling, and provides an effective technical means for deeply researching a stress corrosion mechanism of a material. The method comprises the steps of sample installation, corrosion solution preparation, electrode arrangement, tensile test, electrochemical scanning and the like, and has the advantages of simplicity and convenience in operation, comprehensive data, high precision and the like.

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 storage tank bottom plate corrosion risk prediction method based on electrochemical testing, and relates to the technical field of oil and gas storage and transportation monitoring, and the method comprises the steps: obtaining an external soil sample and an internal deposited water sample of a to-be-predicted storage tank, and obtaining the original environment parameters of the samples; the method comprises the following steps: respectively constructing a soil simulation solution and a deposition water simulation solution based on an out-tank soil sample and an in-tank deposition water sample, and respectively adding a standard metal sample made of the same material as a bottom plate of a to-be-predicted storage tank into the soil simulation solution and the deposition water simulation solution so as to realize an external corrosion test and an internal corrosion test, obtaining a corresponding corrosion test result; and inputting the original environmental parameters, the corrosion test result and the bottom plate information of the to-be-predicted storage tank into a preset corrosion risk assessment model to perform corrosion risk level prediction on the bottom plate of the to-be-predicted storage tank, and outputting the corrosion leakage risk level of the bottom plate of the to-be-predicted storage tank. And the bottom plate can be effectively inspected and predicted without periodically opening the tank.

The invention relates to the technical field of corrosion tests, in particular to a deep soil environment simulation corrosion test device and method.The deep soil environment simulation corrosion test device comprises a test box, a plurality of opening air channels vertically distributed in soil in a penetrating mode and a heating unit composed of a circumferential heating part and an internal heating part vertically inserted into the soil. Gas is directly introduced into the soil through the perforated gas channel to adjust the oxygen content, the humidity and the chemical environment, the soil temperature is cooperatively adjusted through the heating unit, and dynamic closed-loop control is carried out based on feedback of the sensor. The environment regulation and control actuator is directly implanted into the soil, so that the problems of slow response, large gradient and incapability of simulating the deep low-oxygen compact soil environment caused by external regulation and control in the traditional method are solved, and accurate, rapid and uniform simulation and accelerated experiment on the deep soil corrosion environment are realized.

The invention discloses automobile terminal fretting corrosion testing equipment, and relates to the technical field of automobile terminal testing. The device comprises a high-strength device shell, a folding groove is formed in the position, close to one side corner, of the front end of the high-strength device shell, a terminal testing assembly is arranged at the position, close to the folding groove, of the bottom end of the interior of the high-strength device shell, and a high-precision resistance meter is arranged at the position, close to the terminal testing assembly, of the bottom end of the interior of the high-strength device shell. A turnover assembly is arranged on the inner wall of the side, close to the folding groove, of the high-strength equipment shell, the turnover assembly comprises a U-shaped supporting block, and the side end of the U-shaped supporting block is fixedly connected with the high-strength equipment shell; the two terminal fixing plates and the third supporting block are arranged to be detachable, the terminal fixing plates of different models can be conveniently replaced, the requirement for testing the automobile terminals of different models is met, the automobile terminal testing device can be compatible with the use conditions of most automobile terminals, and the application range of the device is expanded.

The present application relates to the technical field of material corrosion test, and particularly relates to a simulated deep-sea environment flowing seawater scouring corrosion electrochemical in-situ test device, which comprises a pressure tank and a hydraulic cylinder, the top end of the pressure tank is provided with a sealing cover, the moving end of the hydraulic cylinder is connected with the sealing cover, and the lower part of the outer lateral wall of the pressure tank is provided with a drain valve; the device further comprises a test assembly, an electrode assembly, a pressure control device, a cooling device, a motor, a hollow rotating shaft, a rotating disc, a positioning piece and an electrochemical workstation, the motor is installed on the top end sealing cover of the pressure tank, the top end of the hollow rotating shaft is rotatably installed on the inner lateral wall top of the sealing cover, the output end of the motor is connected with the top end of the hollow rotating shaft, the positioning piece is arranged on the top end of the rotating disc, and the lower part of the hollow rotating shaft extends into the positioning piece; the device can accurately and effectively simulate the corrosion conditions of metal materials under different hydrostatic pressures and different seawater flow rates, and can realize real-time electrochemical test under high rotating speed, thereby improving the test efficiency and convenience.

The invention discloses a metal material surface corrosion resistance testing device and method, and relates to a metal material corrosion resistance testing technology, the metal material surface corrosion resistance testing device comprises a testing machine body and a lifting stand column fixedly mounted at the rear of the top surface of the testing machine body; the test mechanism is arranged above the test machine body, the test mechanism comprises a test platform, test cone hoppers are arranged on the front side and the rear side of the interior of the test platform, and the test cone hoppers are used for limiting corrosive liquid to the interior so as to realize corrosion test; the bottom of the test platform is provided with a recovery mechanism, and the recovery mechanism comprises a recovery sliding plate. According to the device and the method for testing the surface corrosion resistance of the metal material, the double-station testing platform drives the testing cone hopper to perform corrosion testing on the metal material, and dust before testing and corrosive liquid after testing are collected, so that subsequent corrosion condition observation is facilitated; the convenience and the accuracy of the metal material in the testing process are improved.

The present application relates to the technical field of material performance testing, and discloses a material corrosion testing device and testing method for simulating ocean acidification environment, comprising: a closed simulation testing cabin, which is internally divided into a top-down salt mist simulation cabin, a wet heat simulation cabin and a high-pressure immersion simulation cabin by horizontally arranging openable and closable upper and lower insulation boards, and is provided with a cabin door with a sealing structure at the top; through the independent modular design of the salt mist simulation cabin, the wet heat simulation cabin and the high-pressure immersion simulation cabin, and the automatic switching function of the rotatable lifting sample holder, the present device realizes precise coupling and seamless switching of corrosion environments such as salt mist spraying, high temperature and high humidity, and deep sea high pressure, and the sample can complete the whole cycle corrosion behavior research of the marine atmospheric zone, the splash zone, the tidal zone and the full immersion zone on the same platform, and eliminates the interface effect caused by the traditional multiple equipment series connection testing.

The invention relates to the technical field of metal material service behavior testing, in particular to a stress corrosion testing device and a stress corrosion testing method for a solid-phase additive manufacturing joint micro-size sample. The device comprises a micro clamping module for realizing automatic centering and stable clamping; the micro-volume corrosion tank with the volume of 1-20 mL is used for forming a local corrosion environment and can be observed in situ; the external medium circulation and environment control system is used for providing liquid, gas or liquid / gas combined media and rapidly switching the environment; and the loading detection system is used for loading and recording force-displacement data according to a constant strain rate. The gauge length section of the sample is arranged in the corrosion tank, and the two ends are arranged on the clamping module and are accurately centered through the positioning groove and the pin. The micro-volume corrosion tank can quickly establish a corrosion environment, and the external medium circulation and environment control system can regulate and control the temperature, the flow velocity and the atmosphere, so that quick switching of different media is realized. According to the invention, high-precision stress corrosion testing can be realized on a micro additive interface, and the local area sensitivity evaluation capability is improved.

The invention belongs to the technical field of stress corrosion, and particularly relates to a testing device for in-situ local electrochemical corrosion of a pipeline steel crack tip in a multi-axial stress state. According to the technical scheme, the multi-axis stress corrosion testing device comprises a multi-axis stress corrosion testing box, a multi-axis stress corrosion testing assembly, motors, tension sensing receivers, an electrochemical workstation and a constant-temperature solution supply system, wherein one motor and one tension sensing receiver are connected into a group; a tension control mechanism and a shear force control mechanism of the multi-axial stress corrosion test box are respectively connected with two groups of motors and tension sensing receivers; the multi-axial stress corrosion test assembly is arranged in the multi-axial stress corrosion test box; and the multi-axis stress corrosion testing assembly is connected with the electrochemical workstation and the constant-temperature solution supply system. The test conditions are accurate and controllable, the automation degree of the device is high, the stress condition suffered by the pipeline in the operation process can be simulated by applying different forms of loads to the stress corrosion sample, and the stress condition is close to the real operation state of the pipeline.

The utility model discloses a sealing corrosion testing device for a corrosion-resistant magnetic fluid, and relates to the technical field of testing devices. The sealing corrosion testing device for the corrosion-resistant magnetic fluid comprises a testing cylinder, and the interior of the testing cylinder is filled with the magnetic fluid; the spraying assembly comprises a rotating rod which is rotationally arranged on the inner top wall of the testing cylinder and extends to the upper surface of the testing cylinder, and a cylindrical cavity is formed in the rotating rod. By arranging the spraying assembly and the pressurizing box, when the device is used for testing the corrosion resistance of the magnetofluid, the magnetofluid can be more fully contacted with a salt mist solution containing copper ions in the testing process, and the salt mist solution containing the copper ions, which contains 5 percent (+ / -0.5 percent) sodium chloride and 0.26 g / L (+ / -0.02 g / L) copper chloride, can induce corrosion, so that the corrosion resistance of the magnetofluid is improved, and the corrosion resistance of the magnetofluid is improved. The corrosion speed is eight times higher than that of a common salt mist solution, so that the test period is effectively shortened, and the test efficiency is improved.

The utility model relates to material performance detection test technical field, concretely relates to a tooling lifting appliance for stress corrosion test, for suspending test tooling in test container, include: two supports, with the opposite mode fixed on the inner wall of test container and distance test container bottom surface certain height, every support includes the mounting portion for with test container inner wall connection, the support forms the vertical positioning groove on its upper end. The utility model through setting up support in the inner wall of test container, the interlocking fixed between support and crossbeam, and between crossbeam and test tooling, connect through the tooling connecting structure that constitutes by sliding seat and connecting assembly, after test, put net solution directly dismounts crossbeam from support, can disposablely smoothly take out together with test tooling, can effectively eliminate the shaking brought by the rope, when taking out test tooling, natural vertical stability, not easy to sway and knock the inner wall of test container.

The application discloses a kind of air cooling island flow accelerated corrosion simulation test system and method, main loop subsystem, including high-purity water tank, main loop outlet pipe, electrode flow cell and main loop return pipe;The water outlet of high-purity water tank is connected with the one end of main loop outlet pipe, the other end of main loop outlet pipe is connected with the water inlet of electrode flow cell, the one end of main loop return pipe is connected with the water outlet of electrode flow cell, the other end of main loop return pipe is connected with the backwater of high-purity water tank;Dosing subsystem is used to add alkali agent or oxidizing agent to main loop outlet pipe;Flow accelerated corrosion test subsystem includes test electrode and corrosion tester;Test electrode is placed in electrode flow cell, and test electrode is connected with the input end of corrosion tester by wire;The material of test electrode is the same as the material of the equipment to be simulated air cooling island;The application realizes the real simulation of air cooling island equipment, meets the simulation of high flow rate and anaerobic condition, and the error of simulation test result is small.

Embodiments of the present disclosure relate to the technical field of testing corrosion resistance of materials, and specifically to a system and method for performing a supercritical CO2 corrosion test. The system for performing a supercritical CO2 corrosion test includes a sample loading device, a pressure regulating valve, and an auxiliary pressure regulating member. The sample loading device is configured to have a sample chamber for accommodating a sample, where the sample chamber is further configured to receive a supercritical CO2 fluid so that the sample in the sample chamber undergoes a corrosion test under a supercritical CO2 atmosphere. The pressure regulating valve is disposed downstream of the sample chamber along a flow direction of the supercritical CO2 fluid to regulate a pressure inside the sample chamber so that the sample in the sample chamber is tested under a first preset pressure. The auxiliary pressure regulating member is configured to increase a pressure at an outlet of the pressure regulating valve. According to embodiments of the present disclosure, by providing the auxiliary pressure regulating member, the pressure difference between the inlet and outlet of the pressure regulating valve is reduced, ensuring a precise regulation of the pressure inside the sample chamber by the pressure regulating valve.

The invention discloses a cyclic load and electrochemistry collaborative testing device and a testing method, and belongs to the technical field of material corrosion and mechanical property testing. The device comprises a load applying unit, an electrochemical testing unit, a sample clamp and corrosion pool unit and a data synchronization control module. The test method comprises the steps of sample preparation, device assembly, static electrochemical test and electrochemical collaborative test under cyclic load. The core of the invention lies in that through the data synchronization control module, the electrochemical test is accurately controlled to be triggered when the cyclic load reaches a peak value, and in-situ and synchronous coupling of a dynamic stress field and a corrosion environment is realized. According to the method, the defect that fatigue and corrosion tests are separated in the prior art is overcome, the complex working condition of the material in actual service can be truly reduced, the acceleration or inhibition effect of cyclic stress on the surface corrosion behavior of the material is accurately represented, and the research and evaluation precision of the corrosion fatigue performance and failure mechanism of the material is remarkably improved.

The embodiment of the present application discloses a kind of stress corrosion test fixture and test method.The fixture includes stress simulation component and stress adjusting component.Stress simulation component includes needle valve unit, spring seat and telescopic spring, both sides of spring seat are respectively connected with telescopic spring and needle valve unit, the side of needle valve unit away from spring seat is used to be mutually abutted with test piece.Stress adjusting component includes fixture shell and stress loading unit connected on fixture shell, fixture shell and stress loading unit form the cavity of containing stress simulation component, stress loading unit includes sliding mechanism and positioning mechanism.The fixture provides preload according to stress simulation component, and controls telescopic spring telescopic feed quantity by stress adjusting component, to ensure that test piece is subjected to always stable preload, guarantee the consistency and accuracy of stress corrosion test.The method can accurately and effectively evaluate the stress corrosion resistance of valve seat and valve sleeve welding assembly of oil sprayer.

The invention belongs to the technical field of new material detection, and discloses an orthodontic correction arch wire friction corrosion test system, which comprises a controller, a mechanical excitation device and an electrochemical workstation, and is characterized in that the controller controls the electrochemical workstation to apply polarization pulses to form an ion sheath for neutralizing friction charges; the method comprises the following steps: firstly, carrying out mechanical damage and electrochemical response on the surface of a material, then controlling a mechanical excitation device to apply single instantaneous mechanical scratch, immediately triggering an electrochemical workstation after the scratch is finished, and recording an electrochemical relaxation transient process of spontaneous repassivation of the surface of the material in a static environment without mechanical interference. The technical problem that the dynamic repairing capacity of the material cannot be accurately evaluated due to signal aliasing in an existing continuous friction test is solved, and the obtained data is no longer a fuzzy average value but a clear dynamic fingerprint containing rich physical mechanisms.

The invention belongs to the technical field of corrosion resistance testing, and particularly relates to a corrosion resistance testing system for a multi-layer composite armored grounding device, which comprises an environment simulation module used for firstly constructing a soil simulation environment and then performing gas simulation in the soil simulation environment; the corrosion factor control module is used for controlling soil acidity and alkalinity, stray current and microbial corrosion; and the data monitoring and acquisition module is used for detecting corrosion degree, performance parameters and environmental parameters. A soil simulation environment is constructed through the environment simulation module, the gas simulation unit is arranged, meanwhile, the corrosion factor control module is used for simulating various factors such as soil acidity and alkalinity, stray current and microbial corrosion, and the synergistic effect of various corrosion factors in complex environments such as a chemical industry park can be comprehensively simulated.

The utility model provides a saline-alkaline corrosion resistance testing device for a road base material, and relates to the technical field of coal ash material testing. Mutually symmetrical rectangular grooves are formed in the bottom of the test box; a stabilizing groove is formed in the bottom of an inner cavity of the testing box. Saline-alkali liquid in a saline-alkali pipeline is used for carrying out corrosion test on a blocky fly ash material in a test box, the erosion effect of a saline-alkali environment in an actual road environment on the material is simulated so as to evaluate the corrosion resistance of the material, then a test head is used for carrying out pressing test on the fly ash material below, and the hardness and compressive strength of the fly ash material are measured. It is ensured that the material has enough mechanical stability when bearing vehicle loads and base layer pressure, and the problems that the coal ash material needs to be tested when being laid on a road base layer, and the hardness of a blocky coal ash material subjected to a salt and alkali test needs to be tested again, so that the cost is low are solved. Otherwise, the coal ash material cannot be directly paved on the road base.

The invention discloses an energy-saving high-temperature ammonia corrosion test and analysis system coupled with solar energy. The system comprises a solar heating module, a liquid ammonia tank, an evaporator, a first filter, a buffer tank, a second filter and a test unit, the solar heating module provides heat energy for the evaporator by utilizing photovoltaic power generation and heat collection, and liquid ammonia is gasified by the evaporator, sequentially passes through the first filter and the buffer tank, and enters the second filter for multi-stage purification; the second filter adopts an adsorption and buffer composite structure and is combined with filter layers made of different materials, so that the ammonia gas purity is improved; a plurality of sections of spiral coils with different intensities are arranged in the test unit and are matched with an external induction coil for heating. According to the device, energy consumption is remarkably reduced through solar driving and ammonia gas recycling, meanwhile, the accuracy and applicability of corrosion testing are improved through the multi-layer filtering and segmented temperature control design, ammonia corrosion environments under different high-temperature conditions can be simulated, and the device has the advantages of being efficient, capable of saving energy, accurate in testing, high in automation degree and the like.

The invention belongs to the technical field of pipeline detection, and particularly relates to water supply pipe corrosion resistance testing equipment which comprises a rack and a driving assembly, and the driving assembly is arranged on the rack and used for driving a water supply pipe to transversely move; the rotating assembly is arranged on the driving assembly and used for driving a water supply pipe to rotate; the fixing assembly is arranged on the rotating assembly and used for expanding and fixing the water supply pipe; the detection assembly is fixedly mounted right above the rack and is used for detecting the corrosion resistance of the water supply pipe; and the control assembly is fixedly installed at the upper end of the rack, and the driving assembly, the rotating assembly, the fixing assembly and the detection assembly are all electrically connected with the control assembly.

The utility model belongs to a casting blank spray corrosion testing device in the technical field of casting blank spray corrosion testing. The corrosion tank cover (3) is arranged on the upper portion of the corrosion tank (1), one side of the corrosion tank cover (3) is movably connected with the corrosion tank (1), the side face of the corrosion tank cover (3) is connected with the opening and closing air cylinder (4), the spraying component (5) is arranged in the corrosion tank (1), a plurality of nozzles are arranged on the spraying component (5), and the spraying component (5) is communicated with the acid storage tank (2). The casting blank spray corrosion testing device is simple in structure, automatic operation of casting blank spray corrosion testing can be achieved, closed corrosion is achieved, contact between acid gas and a human body is eradicated, corrosive liquid (acid liquid) is sprayed more evenly, meanwhile, the corrosive liquid is recycled, and waste is reduced.

This application discloses a corrosion resistance testing method, equipment, and system, belonging to the field of corrosion testing technology. In this application, firstly, the polarization curve of the electrode under test is differentiated to obtain a differential curve. Then, a linear interval is determined based on the polarization curve and the differential curve. Finally, the curve data of at least one of the polarization curve and the differential curve within the linear interval are analyzed to obtain the corrosion resistance test result of the electrode under test. Therefore, in this application, the linear interval is determined by combining the common characteristics of the polarization curve and the differential curve. Compared to directly finding the linear interval on the polarization curve, the addition of the constraint of the differential curve allows for faster and more accurate location of the linear interval, thereby improving the accuracy of the obtained linear interval and ultimately improving the corrosion resistance test result of the electrode under test.

The application relates to the technical field of anti-corrosion material testing devices, and discloses an anti-corrosion material testing device for an SCAL type intercooling system and a use method, the testing device comprising a water tank, a corrosive water sample preparation unit, a corrosive water sample testing unit, an online sampling unit and a water quality purification unit; the water outlet of the water tank is connected with the pipeline of the corrosive water sample preparation unit; the corrosive water sample preparation unit; the corrosive water sample testing unit comprises a plurality of test pipe fittings with bending angles, and is used for simulating the performance of the test pipe fittings in the bending shape to the corrosion working condition; the corrosive water sample preparation unit is also connected with the pipeline of the online sampling unit and the water quality purification unit respectively; the water quality purification unit is connected with the water inlet of the water tank, and is used for purifying the corrosive water sample flowing back to the water tank. The device solves the problems of the missing of the bending pipe corrosion test and the insufficient of the multi-water quality monitoring, simulates the corrosion working condition of the bending section, and the online sampling unit tracks the water quality fluctuation.

The invention provides a reinforcing steel bar corrosion testing method, system and equipment, and relates to the field of reinforcing steel bar corrosion tests.According to the method, a testing body formed by testing assemblies corresponding to a to-be-tested reinforcing steel bar is utilized, long-term stable loading can be conducted on the to-be-tested reinforcing steel bar in a tension self-balance state, and therefore reinforcing steel bar corrosion testing in the loading state is achieved; the tension change value of the to-be-tested steel bar can be subjected to long-term statistics, and the steel bar corrosion testing precision is greatly improved.

The invention discloses anti-corrosion testing equipment for building concrete, and relates to the technical field of concrete testing. The building concrete anti-corrosion testing equipment comprises a testing bin, and the interior of the testing bin is rotationally connected with a rotating shaft with damping; and the concrete placing disc is assembled on the side surface of the rotating shaft. According to the anti-corrosion testing equipment for the building concrete, the building concrete is placed on the concrete placing disc, corrosive hot air is fed through the hot air pipe, and the building concrete can intermittently rotate by a certain angle in cooperation with a first rotating rod, a wind wheel, a first bevel gear, a torsional spring rod, a second bevel gear, a rotating disc, a torsional spring block, a limiting block and a gear; under the condition of long-time testing, corrosive hot air is prevented from continuously blowing to a certain fixed point of the building concrete for a long time, and the accuracy of the whole testing result of the building concrete under the condition is improved.

This invention discloses a corrosion testing method adapted to the corrosion intensity of domestic passenger vehicles in the field of automotive material corrosion evaluation technology. The method involves washing, wiping, drying, scratching, masking, and weighing the passenger vehicle sample before placing it in a cyclic corrosion test chamber. A composite corrosion solution is then prepared using deionized water, sodium chloride, calcium chloride dihydrate, magnesium chloride hexahydrate, anhydrous sodium sulfate, sodium nitrate, ammonium chloride, sodium bicarbonate, and iron-manganese-sulfur-nitrate-silicon complex corrosion-promoting microspheres. Subsequently, the sample undergoes a series of cyclic treatments including salt spray deposition, wet heat penetration, hot air drying, and room temperature rehumidification. The corrosion performance of the corroded sample is then tested. This invention can simulate the chloride salt, wet heat, and alternating wet-dry corrosion environments experienced by domestic passenger vehicles in service, improving the adaptability and discriminative power of corrosion intensity evaluation.

The utility model discloses an oil pipe anti-corrosion testing tool which comprises a base body and a plurality of outer testing rings made of different materials, and the two ends of the base body are connected with two oil pipes respectively. An anti-corrosion layer is arranged on the surface of the substrate; and the plurality of outer test rings are sequentially arranged outside the base body at intervals from top to bottom. According to the utility model, the plurality of outer test rings made of different materials are sequentially arranged outside the base body with the anti-corrosion performance at intervals from top to bottom, so that the corrosion rates of various materials under a single well can be simultaneously tested, and meanwhile, the oil well exploitation is not influenced.

The invention relates to the technical field of corrosion tests and equipment, in particular to a tidal range natural acceleration device and a test method.Seawater liquid level changes are monitored in real time through a liquid level sensor, the natural rising tide frequency a and falling tide frequency b of the previous day are obtained, a sample frame is controlled to execute up-down reciprocating motion at N times of frequency, and N is the acceleration rate; and after a plurality of test periods, respectively measuring the corrosion rates of the accelerated test and the naturally exposed sample, calculating the acceleration ratio, and constructing a gray prediction model based on the relationship between the acceleration ratio and time for extrapolating and predicting the natural corrosion behavior of the material in a longer period. According to the invention, a mechanical lifting system capable of being accurately controlled is constructed in a natural seawater tidal range region, so that the frequency of a material drying and wetting alternation process is enhanced, and the corrosion process is obviously accelerated on the premise of not changing the authenticity of a marine environment; the double problems that a traditional indoor acceleration test is poor in correlation with the actual service environment and the natural exposure test period is too long are solved.

This invention discloses a smart meter durability testing device, belonging to the field of meter testing technology. It includes a test stand, on which a simulation test unit, a tightening variable control unit, and a data observation unit for detecting test results are installed. This invention uses high and low temperature testing, damp heat cycling testing, and salt spray corrosion testing modules in the simulation test unit to simultaneously simulate multiple extreme environments, accurately assessing the durability of the meter under complex operating conditions. Through a magnetically controlled connector combined with a tightening motor, the tightening stroke and pressure of the terminal screws can be precisely controlled, thereby exploring the impact of different tightening forces on the durability of the smart meter's terminals. A digital display power monitor synchronously records power consumption with the smart meter, directly comparing the test data with the actual value to quickly identify metering deviations. A camera periodically captures data from the display screen, tracking the meter's performance changes at different test stages and accurately locating the time point of failure.