361 results about "Saline mist" patented technology

The invention belongs to the technical field of material and coating corrosion tests, and relates to a whole sea area atmospheric environment comprehensive simulation test system, which adopts an integrated structural design, and performs integrated coupling of various environmental test simulation capabilities on the basis of a single-function test box. The device has the test capabilities of metal material corrosion acceleration test, organic composite material and coating aging evaluation and the like, can simulate the global marine atmospheric environment and coupling of multiple factors such as air temperature, humidity, salt mist and ultraviolet irradiation, can perform comprehensive test evaluation on the whole-sea-area marine atmospheric environment of typical materials, avoids the problem of inconvenient operation of corrosion tests, and has a wide application prospect. The device can be used for corrosion and ultraviolet aging tests of conventional marine atmospheric environment corrosion media, polar regions, tropical regions and other extreme marine atmospheric environments, and material corrosion tests for simulating marine splash zones, tidal range zones and the like. The device is simple in structure and convenient to operate, and coupling of multiple factors of high and low temperature, humidity, salt mist, ultraviolet illumination and periodic infiltration can be achieved.

The invention discloses a film material surface defect detection method and system based on machine vision, and relates to the technical field of machine vision. Joint modeling is carried out by utilizing a local reflectivity difference value Ploc (x, y) of a pixel coordinate (x, y), a local stacking disturbance index S (x, y) of the pixel coordinate (x, y) and a local gray variance Wvar (x, y) of the pixel coordinate (x, y) in a film material image irradiated by a dual-angle light source, and the detection sensitivity of asymmetric optical disturbance caused by trace salt mist deposition is enhanced. Compared with the current situation that a traditional visual detection method is insufficient in response to early corrosion spots, the method has the advantages that a light reflection subsurface corrosion map can be effectively formed through quantitative combination of two factors of reflection anomaly and structural disturbance in the image, and rapid positioning and early warning of the membrane material salt spray corrosion initial stage are achieved.

The invention relates to the field of radiator testing, in particular to a radiator salt spray test data intelligent processing method and system.The method comprises the steps that test data in the salt spray test process are obtained and preprocessed, and fitting curves of salt spray concentration data and corrosion current density data are generated respectively; acquiring a peak point of the fitting curve of the salt mist concentration data as a segmentation point, matching the two curves through a dynamic time warping algorithm, and calculating a matching degree to determine the segmentation point on the fitting curve of the corrosion current density data; and calculating a correlation value based on the time difference of the matching point pairs and the shortest path distance, dynamically determining weight distribution of the salt mist concentration data and the corrosion current density data in a forgetting gate formula, correcting the forgetting gate formula, and performing test data prediction by using the corrected LSTM model. According to the method, the correlation values of the corresponding segments of the two curves are calculated, and the weights of the salt mist concentration data and the corrosion current density data in the forgetting gate are dynamically adjusted, so that the adaptability of the model to complex data and the prediction accuracy are improved.

The invention discloses corrosion resistance test equipment for a skylight cross beam, relates to the technical field of cross beam tests, and aims to solve the technical problems that a corrosion test of a static placement cross beam sample cannot reflect the influence of dynamic stress on corrosion cracks in the cross beam, and particularly whether stress corrosion cracking can be caused in a salt spray environment or not. Comprising a salt spray testing machine, the salt spray testing machine comprises a test box body, a plurality of test rack assemblies are arranged in an inner cavity of the test box body, each test rack assembly comprises a static test rack and a dynamic test rack, each dynamic test rack comprises a rhombic movable rack, and each rhombic movable rack comprises an upper pressing block, a lower falling block, two symmetrically-arranged bearing blocks and four movable rods. A jolting pressing assembly is arranged at the bottom of the upper pressing block. The device has the advantages that the cross beam sample is in a dynamic stress state in a salt spray corrosion test, the stress condition of the cross beam in actual use is truly simulated, and the test environment is highly close to the actual working condition.

The invention discloses salt spray environment test equipment for environment test, and belongs to the technical field of environment test. The device comprises a test box, a spraying assembly is installed in the test box, a plurality of fans are fixedly installed in the test box, a plurality of heaters are fixedly connected in the test box, a test rack is placed in the test box, a clamping assembly is installed on the test rack, and a simulation assembly is further installed on the test rack. The simulation assembly comprises a shielding assembly, an impact assembly and a friction assembly, the shielding assembly comprises a supporting frame, and a hydraulic cylinder is fixedly installed on the supporting frame. In the circulating corrosion test process, the hydraulic cylinder can be started, atomized saline water is prevented from falling on a sample, and the shielding time can be manually set, so that a control test is formed, that is, one part of the sample is shielded, the other part of the sample is not shielded, and different shielding time can be set on different samples, so that the accuracy of the control test is improved. And test results are enriched.

The invention discloses a corrosion resistance detection device and detection method for corroded foil processing, and relates to the technical field of material corrosion detection.The corrosion resistance detection device comprises a detection box, an exhaust mechanism is arranged at the upper end of the detection box, an ultraviolet lamp is arranged at the top of the inner wall of the detection box, and a traction mechanism is arranged on one side of the detection box. The atomized corrosive liquid is closer to corrosive media such as acid rain and salt mist in natural atmosphere, a complex corrosive environment can be simulated more truly, the superimposed effect of multiple corrosion mechanisms such as photo-oxidation corrosion and damp and hot corrosion can be researched through the synergistic effect of illumination, humidity and the corrosive liquid, the atomized corrosive liquid is close to a complex scene in practical application, and the application prospect is wide. By comparing the corrosion rate under the illumination condition or not, the promotion effect of ultraviolet rays on material corrosion, such as photocatalytic oxidation, corrosion foil on a corrosion swing frame mechanism and corrosion foil on a corrosion diffusion mechanism, can be determined, and the influence of different humidity levels on corrosion types, such as pitting corrosion and crevice corrosion, can be analyzed.

The invention discloses a multifunctional geotechnical mechanical testing system for controlling temperature, humidity and salinity in an extreme environment, and relates to the technical field of ocean geotechnical engineering and geotechnical engineering. The system integrates a high-precision temperature and humidity and salinity control system, can accurately simulate the influence of complex environments such as extreme temperature and humidity, salt spray corrosion and the like on the mechanical properties of geotechnical materials, supports a direct shear test, a pull-out test, a soil body single-particle crushing test and a geosynthetic material stretching and puncturing test, can distinguish static, dynamic and long-term creep test modes, and can be used for testing the mechanical properties of the geotechnical materials. Comprising creep mechanical property testing under cyclic direct shear and continuous load. A visual monitoring assembly is additionally arranged, so that the microscopic deformation and damage process of the sample can be recorded in real time. Through multifunctional integration, temperature, humidity and salinity joint control, visual monitoring and dynamic and static coupling test devices, the technical bottlenecks of single function, environment simulation limitation and microcosmic observation deficiency of traditional equipment are solved, and high engineering application value and popularization potential are achieved.

The invention discloses a salt spray test box, which belongs to the technical field of corrosion resistance testing, and comprises a salt spray test box body, and an anti-blocking mechanism is arranged in the salt spray test box body; according to the salt spray test box, the anti-blocking mechanism is arranged, so that the problem that the salt spray test box is easily blocked by salt particles in the long-time operation process is effectively solved, the anti-blocking mechanism adopts matched work of a cleaning brush, a scraper blade and a reset spring, continuous cleaning of a filter screen and a conveying pipe is ensured, and specifically, after a salt-water mixture enters the conveying pipe, the salt-water mixture is prevented from entering the conveying pipe; the transmission system drives the support to rotate, the support rotates to drive the reset spring to rotate and push the supporting plate and the cleaning brush to move, the cleaning brush is tightly attached to the surface of the filter screen, automatic cleaning is carried out, undissolved salt particles are prevented from entering the conveying pump and the spray head, and it is ensured that salt water can be evenly and cleanly conveyed to a test sample; and equipment faults caused by salt particle blockage are avoided.

The invention discloses a high-temperature-resistant sealing agent and a preparation method thereof, and relates to the technical field of chemical assistants, and the high-temperature-resistant sealing agent is characterized by comprising the following components in parts by weight: 25-32 parts of acidic nano silica sol, 56-65 parts of a cosolvent, 8-12 parts of a hydrolysis inhibitor, 9-12 parts of a silane coupling agent A, 5.5-6.8 parts of a silane coupling agent B and 0.01-0.015 part of a wetting agent. The high-temperature-resistant sealing agent has the effects that the high-temperature-resistant sealing agent is not yellowed, decomposed and dropped after being baked for 2 hours in an oven at the temperature of 250 DEG C, and is not corroded after being corroded by salt mist for 1000 hours.

The invention discloses a processing process fault prediction method for essential oil production, and relates to the technical field of essential oil processing, and the method comprises the steps: constructing an environment equipment coupling model, and drawing an electrical equipment insulation resistance attenuation curve through a salt mist deposition experiment; environment disturbance variables are introduced into the generative adversarial network, and an anomaly detector capable of recognizing salt spray corrosion characteristics and humidity condensation characteristics is trained; capturing time-space correlation between temperature mutation and quality fluctuation through a self-attention mechanism; calculating a probability density function of the residual service life of the equipment in real time, and automatically correcting a temperature over-limit threshold value based on the residual service life distribution; calculating the contribution degree of each node to the fault through intervention simulation; and constructing a digital twinborn model containing thermodynamic and hydrodynamic characteristics. Through environment dynamic modeling, causal reasoning and digital twinning methods, the key problems of low fault prediction precision, poor traceability efficiency and lack of quantitative support in decision making in essential oil production are solved.

In order to simulate the extreme ocean atmospheric environment on the surface of an enveloping naval vessel and the surface of ocean service equipment, the utility model provides a broad-spectrum salt mist artificial simulation system, a double-order saturation barrel is adopted to progressively adjust the airflow temperature within the range of (room temperature + 5 DEG C)-90 DEG C, and a first-order saturation barrel enables airflow and heated pure water to be mixed to generate first-order hot airflow; then conveying to a second-order saturation barrel to be mixed with heated saline water to generate second-order hot air flow, finally mixing the second-order hot air flow with a saline solution with the pH value of 2.0-7.0, and atomizing through a nozzle to generate neutral or acidic broad-spectrum salt mist with the temperature of (room temperature + 5 DEG C)-90 DEG C.

The utility model provides an electronic device which comprises a first structural member and a second structural member, the first structural member comprises a first metal matrix, the second structural member comprises a second metal matrix and a decoration layer arranged on one side of the second metal matrix, and the first metal matrix is electrically connected with the second metal matrix. The corrosion potential of the first metal matrix is lower than that of the second metal matrix; an insulating layer is further arranged on the side, away from the second metal base body, of the decorative layer, the insulating layer is a transparent or semitransparent layer, and the impedance of the insulating layer is larger than or equal to 2000 ohms. The insulating layer is arranged on the decorative layer on the second metal matrix with high corrosion potential, so that a potential difference caused by a closed loop formed between the metal matrixes with different chemical activities can be prevented in a sweat environment or a salt mist environment, and the probability of electrocorrosion of the first metal matrix with low corrosion potential is further reduced; and the long-term use requirement of the electronic equipment is well met.

The invention relates to the technical field of coating detection, in particular to salt mist simulation experiment equipment for coating detection. The salt mist simulation experiment equipment for paint detection comprises a barrel body and a top cover, the barrel body and the top cover are combined to form a corrosion space, and the corrosion space is used for containing corrosion liquid; a heating assembly used for heating is arranged in the barrel body. The mist generator is used for atomizing the corrosive liquid in the barrel body, a cavity ring is arranged on the barrel body, a nozzle is arranged on the inner wall of the barrel body, the nozzle is communicated with the cavity ring, and the mist generator is communicated with the inner bottom of the barrel body and the cavity ring. And the clamping frame is provided with a plurality of clamping units for fixing the coating sample wafer. And the rotation driving piece is in transmission connection with the clamping frame and used for driving the clamping frame to rotate. Under the action of stirring, centrifugal force and air flow in the barrel body, non-uniform corrosion caused by accumulation of liquid drops on the coating sample sheet is avoided, and the uniformity of a corrosion experiment and the objectivity of detection are improved.

The invention discloses a method for monitoring the heat dissipation performance of a module in a salt mist environment, and belongs to the technical field of material performance monitoring, and the method comprises the steps: carrying out the continuous spectrum data collection of the heat dissipation surface of the module in the salt mist environment, obtaining original multispectral data, carrying out the background correction, generating multispectral imaging data, and recognizing an action region; analyzing the spectral response attribute of the action area, obtaining a characteristic spectral fingerprint, carrying out physical parameter inversion, obtaining heat dissipation related physical parameters, and combining heat flow distribution data during the operation of the synchronous acquisition module to establish a related mapping relationship; and carrying out quantitative evaluation on the influence degree and the degradation trend of the salt mist environment on the heat dissipation performance of the module by combining the related mapping relationship to obtain a performance evaluation report. According to the method, the technical means of combining multispectral imaging analysis and heat flow data modeling is adopted, and quantitative diagnosis and trend prediction of heat dissipation performance degradation can be achieved.

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 relates to the technical field of coatings, in particular to a nano anticorrosive coating. The invention provides a nano anticorrosive coating which comprises a component A and a component B. The component A comprises 40-100 parts by weight of bisphenol A epoxy resin, 0.3-5 parts by weight of cerium dioxide modified hexagonal boron nitride nanosheets and 60-85 parts by weight of lamellar structure zinc-aluminum alloy powder. And the component B comprises 20-40 parts of a polyamide curing agent. The zinc-aluminum alloy particles can enhance the toughness of the coating, and the cerium dioxide and hexagonal boron nitride are added to improve the hardness and wear resistance of the coating. And cerium dioxide and hexagonal boron nitride are added, so that the impedance modulus value of the coating is remarkably improved, the corrosion current density is reduced, and the corrosion resistance of the coating is enhanced. In a salt spray test, the modified coating shows better salt spray resistance, and a coating stripping area is not expanded.

The utility model discloses a salt spray test chamber energy-saving water replenishing device which comprises a workbench, a control cabinet is installed on the left side of the top wall of the workbench, a chamber body is fixedly installed on the left side of the top wall of the workbench, a controller is installed on the front wall of the control cabinet, a water replenishing assembly is installed in the control cabinet, and a placing assembly is installed in the chamber body. An atomization assembly is mounted on the inner bottom wall of the box body. The salt spray test box disclosed by the utility model relates to the technical field of salt spray test boxes. According to the energy-saving water supplementing device for the salt spray test box, the L-shaped placing frame drives the placing plate and the inclined plate to be placed in the box body to be attached to the blocking strip, and the concentration of salt spray in the box body is detected through the concentration sensor, so that when a salt spray corrosion resistance test is carried out, products to be detected can be firstly placed in a classified mode, and multiple batches of tests can be carried out at the same time; the salt solution on the surface of the sample cannot drip to the surfaces of other samples on the lower portion, and when the salt solution is insufficient, water can be automatically supplemented without additional manual intervention.

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 utility model discloses a uniform humidifying device for a salt spray test box, and relates to the technical field of test boxes. Comprising a test box, the outer wall of the test box is fixedly connected with a control box, the top of the test box is rotatably connected with an upper cover body, the upper cover body is of an inverted V-shaped structure, rectangular grooves are symmetrically formed in the outer wall of the top of the upper cover body, the inner walls of the rectangular grooves are fixedly connected with PVC plates, and the inner wall of the upper cover body is provided with a humidifying assembly; the humidifying assembly comprises two triangular supports, a ring pipe is arranged between the two triangular supports, and the outer wall of the ring pipe is fixedly connected with a positioning block. Installation conditions are provided for the ring pipe and the flow guide pipe through the tripod, the water pipe and the ring pipe are communicated through the flow guide pipe, during testing, after the cover body is covered and saline water is introduced into the ring pipe, the atomizing nozzles on the ring pipe are distributed in an equidistant array mode, and when the saline water is atomized through the atomizing nozzles on the ring pipe, the internal environment of the test box can be evenly humidified.

The invention relates to the technical field of material performance testing, and discloses a multi-parameter simulation salt spray environment test system and method, and the system comprises a multi-parameter cooperative control module, a bionic fog drop generation and salt spray adjustment module, an energy recovery and resource circulation module, a salt spray environment adaptive compensation module, and a test data intelligent analysis module. The modules are in closed-loop communication through an industrial Ethernet; the method comprises the steps of test preparation, model initialization, dynamic simulation and compensation, energy resource circulation and data processing ending, specifically, a salt mist concentration-temperature-humidity-wind speed coupling model is constructed, uniform salt mist is generated through bionic atomization and electrostatic adsorption, self-adaptive compensation is achieved in combination with partition sensing and corrosion current detection, and the salt mist concentration-temperature-humidity-wind speed coupling model is obtained. And heat is recovered, and condensate water and non-atomized saline water are recycled. The problems of multi-parameter coupling interference, resource waste and low data value in the prior art are solved, the simulation precision and the resource utilization rate are improved, and the method is suitable for multi-field material corrosion resistance testing.

The invention relates to the technical field of salt spray corrosion tests, in particular to cable assembly salt spray corrosion resistance testing equipment which comprises a box body and a cable clamping seat arranged in the box body. When the cable assembly salt spray corrosion resistance testing equipment is used, a driving mechanism drives a rotating frame to rotate around a center shaft of the rotating frame, and a plurality of salt spray nozzles are driven to rotate synchronously; all-around and dead-corner-free wrapping type spraying from top to bottom and from outside to inside is realized, and each surface of a sample can be uniformly covered by salt mist; the deflection nozzle is driven by the swing mechanism to perform periodic reciprocating swing, and swing airflow can effectively blow the surface of a cable sample, so that a heavy liquid film on the surface of the sample can be thinned and disturbed, unreal flowing caused by the gravity action is prevented, and the state of the liquid film is closer to the effect of wind and rain in the natural environment; and a weak dead angle possibly existing in spraying of the enhanced rotating frame can be supplemented, so that the distribution uniformity of salt mist and the severity of testing are further improved, and the authenticity and the accuracy of environment simulation are remarkably improved.

The invention relates to the technical field of cables, provides an environment-friendly marine cable, and aims to solve the technical problem that an existing marine cable is insufficient in comprehensive protection capability. The cable sequentially comprises a cable core conductor, an insulating layer, an inner protective layer, a viscoelastic damping and stress decoupling layer, a dual-function sacrificial hydrogel layer and a high-durability environment-friendly outer sheath from inside to outside. By the adoption of the technical scheme, integrated cooperative protection of the structure and materials can be achieved, dual active protection on moisture and salt mist is provided, the cable is endowed with excellent mechanical stress tolerance, and high environmental protection performance and long-period durability of the cable are guaranteed.

The invention relates to the technical field of detection, in particular to an anchor chain corrosion-resistant coating performance detection device which comprises a box body, a box cover is hinged to the box body, the lower end of the box body is fixedly connected with a base, and a salt mist spraying assembly used for anchor chain corrosion resistance detection is arranged in the box body; a containing box is arranged in the box body, a threaded rod is rotationally connected to the box body through a sealing bearing, a moving block is connected to the threaded rod in a threaded and penetrating mode, a moving plate is fixedly connected to the moving block, a sliding edge strip is fixedly connected to the moving plate, and a limiting groove is formed in the inner wall of the box body. The sliding ribs are arranged in the limiting grooves in a sliding mode. According to the invention, the detection accuracy can be improved.

The invention relates to the technical field of TOM diaphragm testing, in particular to a weather resistance testing device for automobile TOM diaphragm production, which comprises a box body, a box door and the like, and the box door is hinged to the front side of the box body. According to the invention, saline water can be sprayed onto the TOM membrane through the atomizing nozzle for salt spray test, clear water can be sprayed onto the TOM membrane for simulating humidity change in the natural environment, the ultraviolet lamp can irradiate the TOM membrane for simulating illumination in the natural environment, and the bidirectional temperature controller can control the temperature in the cylinder and the temperature in the rotating cylinder. The temperature change in the natural environment is simulated, various climates can be tested through one device, the TOM membrane does not need to be transferred frequently, the workload of workers can be reduced, the TOM membrane can be prevented from being interfered by the outside, and the accuracy of the test result is ensured.

A low-temperature salt spray corrosion system belongs to the technical field of polar environment salt spray tests and can be used for low-temperature salt spray environment corrosion tests of equipment and materials. The corrosion system comprises a low-temperature environment box, a salt spray test box, an electric heating system, salt spray spraying equipment, a water tank and an air pump. The anti-freezing liquid pipeline system has heat preservation and heating functions and is matched with the gas path system to complete conveying of a salt solution in a low-temperature environment; 2) a nozzle system with heat preservation and electric heating functions and adjustable particle size ensures low-temperature spraying of mist salt mist liquid drops; (3) an anti-freezing drainage system with a heating function ensures low-temperature drainage of deposition liquid in the box body; and 4) an electric heating function anti-freezing observation window system ensures the observation function of the box body at low temperature. Through the targeted low-temperature anti-freezing design, the low-temperature corrosion capability verification of the equipment material is realized, and the low-temperature freezing problem of the conventional salt mist box is solved.

The invention provides a high-low temperature composite environment sensitive fracture test system. The high-low temperature composite environment sensitive fracture test system comprises a fracture testing machine, a high-low temperature composite salt spray test box and a host control cabinet, a test cavity of the high and low temperature composite salt spray test box is arranged in the environment sensitive fracture testing machine; a test piece is located in a test cavity of the high-low-temperature composite salt spray test box, and a high-low-temperature alternating corrosion environment is achieved through the damp and hot module, the low-temperature module and the spraying device. Salt mist, damp and hot, dry and low-temperature test sections are set through a control system, the time and the cycle index of each test section are adjusted, a high-low temperature composite salt mist environment is formed, and an environment sensitive fracture test in a multi-factor coupling environment can be achieved in cooperation with an environment sensitive fracture testing machine. The device is flexible in structure, large in adjustable range and high in test efficiency, test space is saved, and according to service environments of material test pieces under different working conditions, the environment sensitive fracture performance of materials can be examined in a multi-level mode by compositing multiple test environments, adjusting environment test parameters and simulating a real service environment.

The utility model relates to the technical field of salt-spray corrosion tests, in particular to an antirust paint salt-spray corrosion test device which can remove water drops on a box cover and observe the rusting condition of a sample, does not affect the test progress and is good in practicability. Comprising a box body and a box cover, the box cover is hinged to an opening in the upper end of the box body, and the box cover is made of transparent materials; the shaft tube is horizontally and movably inserted into the side wall of the box cover and is parallel to the middle ridge line of the box cover, the handle is installed at the outer end of the shaft tube and located outside the box cover, the two frameworks are oppositely installed at the inner end of the shaft tube, the two scrapers are installed on the upper end faces of the two frameworks respectively, and the two scrapers are arranged on the upper end faces of the two frameworks respectively. The two scraping pieces scrape the two sides of the inner wall of the top of the box cover respectively.

The invention relates to the technical field of hole sealing reagents, in particular to a medium-temperature nickel-free hole sealing agent and a preparation method and application thereof. The invention provides a nickel-free hole sealing treatment fluid, which comprises the following components by mass concentration: 0.1-30 g / L of a main hole sealing agent; 0.01 to 30 g / L of polyol fatty acid ester; 0.1 g / L to 10 g / L of an accelerant; a pH buffer agent is 0.05 to 5 g / L; wherein the main hole sealing agent comprises alkali metal salt and / or alkaline earth metal salt and lays a hole sealing core foundation; the polyol fatty acid ester is used as a coalescing agent and can form an organic film on the outer surface of a film layer to further obstruct a medium and improve the smoothness; the accelerant can further improve the corrosion resistance and the color fixing property; and the pH buffering agent ensures that the functions of all the components are fully exerted. All the components of the treating fluid cooperate with one another, so that the hole sealing quality, the salt mist tolerance and the color fixing performance of the treating fluid can be comparable with those of a commercially available nickel-containing hole sealing agent, and the treating fluid shows excellent comprehensive performance.

The present invention relates to the field of detection technology, and in particular to a device for testing the corrosion resistance of anchor chains. The device comprises a housing, a housing cover hingedly connected to the housing, a base fixedly connected to the lower end of the housing, a salt spray spray assembly for testing the corrosion resistance of anchor chains disposed within the housing, a placement box disposed within the housing, a threaded rod rotatably connected to the housing via a sealed bearing, a movable block threadedly connected through the threaded rod, a movable plate fixedly connected to the movable block, a sliding rib fixedly connected to the movable plate, a limiting groove provided on the inner wall of the housing, and the sliding rib slidably disposed within the limiting groove. The present invention can improve the accuracy of detection.

The invention relates to a multi-factor artificial accelerated aging test device and method.The multi-factor artificial accelerated aging test device comprises a test box, an ultraviolet radiation system, a humidity control system, a temperature control system, a salt mist generation system, a compression loading system and a control system.The test box forms a test cavity, and the test cavity is provided with a sample clamping assembly used for clamping a test sample; the ultraviolet radiation system, the temperature control system and the compression loading system are arranged in the test cavity, the ultraviolet radiation system is used for controlling the ultraviolet radiation intensity of the test, the humidity control system is used for controlling the humidity of the test cavity, the temperature control system is used for controlling the temperature of the test cavity, and the salt mist generation system is used for controlling the salt mist concentration of the test cavity. The compression loading system is used for compressing a test sample to a preset compression ratio; a controller of the control system is used for controlling the operation of the ultraviolet radiation system, the humidity control system, the temperature control system, the salt mist generation system and the compression loading system. The test device can effectively carry out a multi-factor aging test.