298results about "Testing metals" patented technology

The invention provides a titanium plate performance analysis method and system, and relates to the technical field of metal material detection.The method comprises the steps that an optical scanner is adopted to establish a three-dimensional structure on the surface of a titanium plate, and test areas are divided; synchronously acquiring stress, hardness and conductivity data of a test point by using a multi-probe collaborative detection device; constructing a dual-branch feature extraction network, wherein the dual-branch feature extraction network comprises a surface topography feature branch and a physical feature branch; performing statistical integration on the features in the test area, calculating distribution features and determining a weight coefficient; and generating a performance analysis result through feature fusion and a multi-task output layer, and finally determining the performance grade of the titanium plate. According to the method, deep fusion of morphology information and physical characteristics is realized, and the accuracy and reliability of titanium plate performance evaluation are improved.

The invention belongs to the technical field of outer pipeline obstacle-crossing carrying robots, aims to complete the detection task of the whole circumference of the surface of an outer pipeline in a narrow working space, and discloses an outer pipeline obstacle-crossing carrying robot in a complex environment, which comprises a self-adaptive clamping unit, a middle motor joint bending obstacle-crossing unit and a combined wheel type moving unit, the self-adaptive clamping units are connected to the front portion and the rear portion of the middle motor joint bending obstacle crossing unit, the combined wheel type moving unit is connected with the self-adaptive clamping units, a connecting rod body serves as a power source for active clamping of a single-side arm through a worm and gear, and the robot conducts inchworm type axial movement through the middle motor joint bending obstacle crossing unit. Front-back movement and directional rotation are carried out through the combined wheel type moving unit. The device can adapt to space inclined and bent pipeline structures, has the capacity of treating obstacles such as pipe diameter abrupt change, pipeline hanging brackets and bosses, and has certain load capacity.

The invention discloses a test method for exploring the inhibition effect of a coating on GIL metal particles, and relates to the technical field of high-voltage transmission lines and insulation, the test is carried out in a GIL test platform, and the test method comprises the following steps: S1, selecting a coating material; s2, determining a film covering position; s3, selecting proper particles; s4, determining a particle placement position; s5, carrying out a pressurization test; and S6, observing the motion state of the particles under high voltage, recording the take-off voltage, the stop voltage and the distribution range of the particles, and analyzing the effect of the film on inhibiting the take-off of the particles. According to the test method for exploring the inhibition effect of the covering film on the GIL metal particles, the inhibition effect of the covering film on the metal particles in different shapes is observed and compared through tests, and a basis is provided for practical application of the covering film.

The invention relates to the technical field of flux-cored wires, and discloses a high-rust-resistance flux-cored wire preparation method which comprises the following steps of S1, raw material pretreatment, S2, powder adding and forming, S3, surface modification and S4, finished product inspection. Before work is started, a worker prepares raw materials including high-carbon ferrochrome, tungsten carbide, boron carbide, rare-earth metal oxide and ferromolybdenum powder, then grinding equipment is used for grinding the raw materials, then the ground powder is dried for 2-3 hours through equipment at the temperature of 100-150 DEG C, the dryness of the raw materials is guaranteed, and the raw materials are evenly mixed. The method comprises the following steps: firstly, preparing a flux-cored wire, then uniformly stirring by utilizing three-dimensional mixing equipment, and then mixing and proportioning according to different proportions according to a corrosion-resistant flux-cored wire, an acid-base-resistant flux-cored wire and a high-hardness high-temperature-resistant flux-cored wire, so that the welding wires with corresponding properties can be conveniently used according to different environments, and the maximization of the functionality of the welding wire is improved.

A method for creating a prediction model for corrosion of metals includes using as training data a plurality of label images which indicate a distribution of substances present in a corrosion process of a metal surface, in terms of a distribution of labels, in a plurality of time-series visible light images indicating the corrosion process on the metal surface to create a prediction model for corrosion of metals which predicts a future change in a corrosion state of a metal surface to be predicted from a visible light image of the metal surface. The number of the labels is set according to the number of types of the substances. The distribution of the labels is created based on a color distribution of coordinate values in color space of the visible light images.

The invention discloses a risk assessment method based on a steel structure net rack, and belongs to the technical field of building structure safety assessment, and the method comprises the steps: S10, carrying out the sampling detection of a steel material of the steel structure net rack, obtaining the performance parameters of the steel material, and enabling the performance parameters to comprise mechanical parameters; s20, geometric parameters and load parameters of the steel structure net rack are obtained based on the mechanical parameters, wherein the geometric parameters comprise the length of a rod piece, node coordinates and the span and height of the net rack; and S30, screening the performance parameters, the geometric parameters and the load parameters, and removing abnormal values of the performance parameters, the geometric parameters and the load parameters. By combining the performance parameters, the geometric parameters and the load parameters, the safety performance of the steel structure grid frame under different working conditions can be comprehensively evaluated, the collected stress data can be analyzed through a machine learning method, the stress distribution prediction model is constructed, the stress concentration area can be more accurately determined, and the safety performance of the steel structure grid frame under different working conditions is improved. Therefore, the potential risk of the structure is comprehensively evaluated.

The present application relates to the technical field of nuclear power plant performance testing and discloses a method for assessing the remaining life of a bursting disk in a large-caliber vacuum system of a nuclear power plant, comprising the following steps: S1, obtaining a first sample of a reference bursting disk after a first fatigue test, obtaining a second sample of a bursting disk to be assessed, and performing a bursting test on the first and second samples to obtain a life coefficient; S2, performing a non-metallic material state test on non-metallic debris in the first and second samples after the test, obtaining non-metallic test results of similar non-metallic materials, and obtaining a first remaining life of the bursting disk to be assessed; S3, performing a metallic material state test on metallic debris in the first and second samples after the test to obtain a second remaining life of the bursting disk to be assessed; S4, obtaining a third sample of the bursting disk to be assessed, and performing a second fatigue test to obtain a third remaining life of the bursting disk to be assessed; and S5, obtaining a final remaining life of the bursting disk to be assessed based on the life coefficient, the first, second, and third remaining lives.

The invention provides a testing device for evaluating the degradation behavior of a degradable bone fixing instrument under complex mechanical loading, and the device can simulate complex mechanical conditions and liquid environment after the degradable bone fixing instrument is implanted into a human body in vitro, and can load pressure and fluid impact force in 1-3 directions at the same time; the temperature can be regulated and controlled to realize degradation at a specific temperature, and a plurality of test samples and degradation liquid can be collected at the same time for characterization analysis due to the multi-flux design, so that the degradation condition of the degradable bone fixation instrument under the complex mechanical loading condition is evaluated. The mechanical loading device is easy and convenient to operate, low in cost, good in universality and expansibility and adjustable in parameter, and the simulation condition is closer to the in-vivo real condition. Compared with a traditional non-mechanical condition, the device can provide a new thought for in-vitro prediction in vivo and short-term prediction of degradation evaluation of the degradable bone implant, and finally facilitates promotion of marketing of the novel degradable bone implant.

The utility model discloses a metal material constant load testing device suitable for a hydrogen environment, which comprises a high-pressure gas storage bin, the high-pressure gas storage bin is hermetically connected with an upper bin cover and a lower bin cover, the upper bin cover is provided with a gas inlet pipeline, the lower bin cover is provided with a gas outlet pipeline, the high-pressure gas storage bin is filled with hydrogen, the upper bin cover is provided with an upper loading rod, and the lower bin cover is provided with a lower loading rod. The upper end of an upper loading rod is connected with a loading head, the lower end of the loading rod extends into the high-pressure gas storage bin, a load sensor is installed on the upper loading rod, a lower loading rod is arranged on the lower bin cover, the upper end of the lower loading rod extends into the high-pressure gas storage bin, the lower end of the lower loading rod is connected with a base, the lower end of the upper loading rod is provided with an upper connector, and the upper connector is connected with a lower connector. A lower connector is arranged at the upper end of the lower loading rod, a constant-load sample is connected between the upper connector and the lower connector, an extensometer is mounted on the constant-load sample, and a temperature sensor and a pressure sensor are mounted in the high-pressure gas storage bin. According to the utility model, a high-pressure hydrogen test environment can be effectively provided, and the performance test of a metal material under a constant load is realized.

The invention relates to the technical field of carbon dioxide geological utilization and storage, in particular to a sealing evaluation device and method for a low-melting-point alloy shaft plugging material, and the device comprises an observation cylinder, an outer cylinder, a simulation shaft, a gas channeling simulation mechanism, a formation pressure adjusting mechanism, a cooling mechanism, a shaft pressure adjusting mechanism and an image acquisition unit. The device is reasonable and compact in structure, alloy materials in the simulation wellbore are in an alloy melting stage, the sealing ejector pin prevents liquid alloy from flowing into the first gas injection hole, and after the alloy materials in the simulation wellbore are solidified, the sealing ejector pin is moved downwards, so that the upper end of the sealing ejector pin is located below the first gas injection hole, and the gas channeling simulation mechanism is communicated with the lower portion of the simulation wellbore; when the formation pressure adjusting mechanism works, the formation pressure adjusting mechanism is connected with the confining pressure cavity through the pressurizing hole, the simulation effect on the formation pressure around the simulation shaft can be achieved, the heating melting-cooling forming process of the low-melting-point alloy material is achieved, and the sealing capacity of the alloy plug-sleeve combination body under the actual underground working condition is evaluated.

The invention discloses a motor train unit train body service state detection method and system, and belongs to the technical field of motor train unit detection. The method comprises the following steps: a corrosion state detection stage: positioning a corrosion area, recording a corrosion range and a maximum corrosion depth, and collecting a corrosion product sample; then component testing is conducted on the corrosion product sample, corrosion product components and corrosion types are analyzed, a corrosion mechanism is generated, and a corrosion detection result is obtained; a weld joint dual-detection stage: detecting structural defects or cracks of a target weld joint area through a dye penetrant inspection method, carrying out residual stress test by using ultrasonic waves, and evaluating the use performance of the vehicle to obtain a weld joint detection result; and a fatigue strength and residual life evaluation stage: establishing a vehicle body finite element model under different vehicle conditions according to a corrosion detection result and a welding seam detection result, evaluating the residual life of the vehicle body through static strength and fatigue strength simulation, and generating a vehicle body service state. According to the invention, high-efficiency and comprehensive monitoring and evaluation are realized.

The present application relates to a kind of GH4706 alloy long time heat exposure organizational performance evaluation method, belong to high-temperature alloy performance evaluation technical field, solve the problem of not comprehensive of the performance evaluation of alloy by existing method.The method includes selecting alloy forge piece to carry out long term heat exposure test, obtains its organizational performance data and / or organizational parameter under different temperature and different heat exposure time, forms measured data set;Establish the relationship p=T(lgt+C) / 1000 between time-temperature uniform parameter and heat exposure time and heat exposure temperature, formula is substituted into by experimental data and different C value, calculate p;Through linear fitting, establish the preliminary fitting model between p and organizational performance data and / or organizational parameter;Determine the best C value;Establish the final fitting model between p and organizational performance data and / or organizational parameter;The equivalence of model is verified using p value, and performance is evaluated using final fitting model.The method of the present application is comprehensive to the performance evaluation of alloy.

A system, device, method, and program for acquiring feature data for material composition information based on artificial intelligence are disclosed. The system may include a memory configured to store a first artificial intelligence (AI) model configured to output first feature data for composition information of a material and a second AI model configured to output second feature data for structure information of the material; and a processor configured to learn the first AI model and the second AI model. The processor may be configured to learn the first AI model based on the second feature data for the structure information of the material output by the second AI model, and / or to learn the second AI model based on the first feature data for the composition information of the material output by the first AI model.

The invention relates to the technical field of metal coating detection, in particular to a full-automatic platinum load analysis device which comprises a frame and a through groove transversely formed in the frame in a penetrating mode, and further comprises a metal coating movably arranged in the through groove; the rollers are axially, symmetrically and rotationally mounted in the frame and movably abut against the bottom of the metal coating; the detection platform is movably mounted in the frame and is positioned below the metal coating; the fixed cylinder is fixedly mounted on one side of the frame; the rotating cylinder is rotationally mounted in the fixed cylinder; the notches are formed in the outer side of the rotating cylinder in an annular array mode, and the number of the notches is multiple; and the moving frame is movably mounted in the notch. According to the full-automatic platinum load analysis device provided by the invention, the beating assembly can beat and clean the bristle part of the brush plate through reciprocating swing of the beating plate, so that the cleanliness of the brush plate is ensured, and the cleaning quality of a metal coating is further improved.

The method for generating a steel sheet material prediction model according to the present application is a method for generating a steel sheet material prediction model in a steel sheet cooling device, the steel sheet cooling device including a water cooling device that cools a steel sheet by spraying cooling water on the heated steel sheet, and a temperature measuring device that measures the surface temperature of the steel sheet during cooling, wherein the method for generating a steel sheet material prediction model includes the step of generating a steel sheet material prediction model after the steel sheet passes through the cooling device by machine learning using a plurality of learning data sets that include, as input performance data, surface temperature information data sets including measured data of the surface temperature at a reference point set in advance on the steel sheet and measured data of the surface temperature at a reference point set based on the reference point, and, as output performance data, material information of the steel sheet after passing through the cooling device at a position corresponding to the reference point on the steel sheet corresponding to the input performance data.

Provided is a computer-implemented method for predicting a pharmacokinetic feature for a drug administered to a subject, such as maximum concentration or time to maximum concentration. The method includes: contacting a fluid of the subject with an electrochemical aptamer-based sensor capable of detecting the drug, receiving a series of output values of the electrochemical aptamer-based sensor over a period of time, and using the series of output values to predict the pharmacokinetic feature.

The invention relates to a method (29) and an apparatus (1) for classifying a metal powder (2). The aim of the invention of improving a characterization and classification of the metal powder (2) is achieved by means of an apparatus (1) which comprises: - an illumination unit (8) for illuminating the metal powder (2), the illumination unit (8) having a plurality of illuminants (10) located around the metal powder (2) so that the metal powder (2) can be illuminated from various horizontal angles and with various light wavelengths; - an image-capturing unit (9) for capturing image data relating to the metal powder (2) illuminated by the illumination unit (8) from the various horizontal angles and the various light wavelengths; and - a processing device (13) for processing the image data, the processing device (13) being operatively connected to the image-capturing unit (9) for signal communication, so that the processing device (13) can classify the metal powder (2) on the basis of the image data transmitted by the image-capturing unit (9).

The invention discloses preparation and application of a lithium-aluminum-magnesium alloy material with low self-corrosion efficiency. The preparation method comprises the following steps: (1) mixing an aluminum ingot, a magnesium ingot, an Al-10Fe alloy ingot and an Al-20Li alloy ingot, and smelting at high temperature to obtain alloy liquid; (2) adding sulfur powder, and uniformly stirring to obtain a melt; and (3) after casting, quenching to obtain an Al-2Li-4Mg alloy material, wherein the lithium-aluminum-magnesium alloy material comprises the following components in percentage by mass: 92.89% of Al, 4.68% of Mg, 2.04% of Li, 0.38% of Fe and 0.01% of Si. And (4) carrying out microstructure characterization, hydrogen evolution and electrochemical testing and aluminum air battery testing, and evaluating the electrochemical performance of the Al-2Li-4Mg alloy material. The lithium-aluminum-magnesium alloy material serves as an anode, the self-corrosion rate is remarkably reduced, the anode efficiency is improved to 90% from 71%, and the discharge performance is optimized by adjusting the form and distribution of the second phase Al3Fe in the bulk phase.

This invention relates to the field of enameled aluminum wire testing technology and discloses a device for testing the elongation rate of the coating after aging of enameled aluminum wire. The device includes a base and a frame fixedly mounted on the top surface of the base. A test plate is slidably mounted on the inner wall of the frame. Tooling fixtures are provided on both the inner top surface of the frame and the top surface of the test plate. A drive structure for driving the test plate is provided on the frame. Two mounting seats are symmetrically fixedly mounted on the inner top surface of the frame. This invention achieves precise adjustment of the mounting plate height through a threaded transmission structure of a threaded sleeve and an adjusting screw. Combined with the slot limiting during the movement of the rotating sleeve, it ensures that the mounting plate always corresponds to the center position of the tooling fixture during feeding. Simultaneously, the gravity traction of the counterweight and the magnetic drive of the centering component automatically center and align the enameled aluminum wire sample, avoiding premature core wire breakage due to clamping misalignment or clamping distance deviation, reducing test data errors, and accurately reflecting the actual elongation rate of the coating after aging.

The invention discloses a pretreatment method for an alloy performance test. The method comprises the following steps: determining the weight of first mixed resin and the weight of second mixed resin based on the weight ratio of the first mixed resin to the second mixed resin in a to-be-tested alloy and the weight of the required to-be-tested alloy; based on the weight of the first mixed resin, preparing the first mixed resin according to the weight ratio of the first resin to the titanium dioxide in the first mixed resin; based on the weight of the second mixed resin, preparing the second mixed resin according to the weight ratio of second resin to titanium dioxide in the second mixed resin; mixing the first mixed resin and the second mixed resin to obtain the alloy to be detected; and testing the performance of the alloy to be tested. According to the scheme provided by the invention, the process is simple and convenient, the applicability is high, the finally obtained alloy to be detected can meet the requirements of performance detection through clear weight ratio calculation and standard preparation steps, and good production application and popularization prospects are embodied.

A computer-implemented method for administering a drug to a subject is provided, the method including administering the drug to the subject using a controllable pump, contacting an electrochemical aptamer-based sensor capable of detecting the drug with a bodily fluid (e.g., in situ interstitial fluid) of the subject, receiving a series of output values ​​of the electrochemical aptamer-based sensor over a period of time, and controlling the pump using the series of output values.

A system and method for identifying working medium solidification of a liquid metal heat exchanger comprises a monitoring system, the monitoring system is installed on the liquid metal heat exchanger, temperature and pressure difference information of a working medium inlet and a working medium outlet of the liquid metal heat exchanger is obtained through the monitoring system, and therefore the working medium solidification condition of the liquid metal heat exchanger is confirmed. According to the method, the physical influence of the solidification phenomenon on the heat exchange process in the heat exchanger is combined, multi-area working medium parameters are measured, and judgment logic combining moving average, trend judgment, trend variation analysis and mutation detection is adopted, so that solidification occurrence identification based on multi-physical-parameter dynamic coupling is achieved. And meanwhile, the sudden change detection is adopted, so that the embodiment can respond to the serious rapid solidification phenomenon more rapidly, and the operation safety of the heat exchanger is further improved. According to the identification method, the operation state of the heat exchanger can be monitored in real time, the solidification phenomenon can be captured earlier, and the sensitivity and stability of early warning are both considered.

The utility model discloses a kind of plate shape detection devices, it is related to plate shape detection technical field.The device includes: base roll and flexible pressure-sensitive lining;The flexible pressure-sensitive lining is attached to the outer surface of the base roll, for real-time acquisition foil pressure distribution data;It can be convenient to collect the pressure data of different position regions of the foil needle to be detected to plate shape detection device.The scheme of the utility model, foil can be quickly and accurately detected to plate shape, provide help for ensuring the quality and performance of foil.

The application relates to the technical field of titanium alloy detection, and discloses a titanium alloy wire performance detection method, equipment and system. The method collects real-time force value displacement data of a tensile test and echo signal data of ultrasonic detection, obtains smooth force value displacement data and frequency spectrum characteristic parameters after processing, fuses yield strength and tensile strength with peak frequency and amplitude attenuation rate in a characteristic layer, and constructs a first multi-dimensional characteristic matrix; the method inputs a pre-trained deep confidence network model, predicts mechanical properties such as elongation and hardness value, compares with a preset threshold value, marks unqualified items, and generates a detection report. The method improves the comprehensiveness and accuracy of detection through multi-source data fusion and advanced algorithm processing, realizes efficient evaluation of titanium alloy wire performance, and is suitable for strict detection requirements of titanium alloy wire quality in the fields of aerospace, medical devices and the like.

The application provides a water plugging device and method for realizing visual analysis under different flow rate conditions, which comprises a plastic pipe frame, a plastic cylinder sleeve supported on the top of the plastic pipe frame through a steel pipe elbow and a steel cylinder guard frame, the plastic cylinder sleeve is connected with an air pressure tank through a rubber conduit hole and a rubber pipe, the air pressure tank is provided with a grouting opening and is used for storing special magnetic slurry, the plastic cylinder sleeve is connected with a power supply through a valve, a direct current intelligent electromagnetic flowmeter and a rubber pipe, one end of the plastic cylinder sleeve is connected with a water tank through a self-made steel frame mold and a water pipe, the other end of the plastic cylinder sleeve is provided with a magnetic self-aggregation magnetic bar, and the magnetic self-aggregation magnetic bar is connected with a pressure test pump through a rubber pipe. The water plugging device can be used for simulating the water plugging example under the water gushing condition of a real karst area tunnel, can effectively control the water gushing disaster, and avoids serious economic loss and heavy casualties.

A computer-implemented method for predicting a pharmacokinetic property, such as a maximum concentration or time to reach a maximum concentration, of a drug administered to a subject is provided. The method includes contacting a bodily fluid of the subject with an electrochemical aptamer-based sensor capable of detecting the drug, receiving a series of output values ​​of the electrochemical aptamer-based sensor over a period of time, and predicting the pharmacokinetic property using the series of output values.

A method for assessing a structure arranged in an electrolyte may include connecting an electric source between the structure and an earth, and imposing, on the structure, a primary current with at least three frequencies including a first frequency of a duration and an amplitude, a second frequency of a duration and an amplitude, and a third frequency of a duration and an amplitude, a series of currents with the first and second frequency being separated by a time gap. Fields of electric fields may be measured with an instrument having first, second, and third sensors and a positioning system. Each sensor May be configured to measure a field of an electromagnetic field along the structure for each of the frequencies. A primary field resulting from an electric current within the structure based on the measured field may be computed.

[Object] To accurately evaluate delayed fracture characteristics under an environment which is a low-temperature high-humidity and high-chloride environment. [Solution] A method for evaluating a delayed fracture characteristic of a metal material that performs a step including a step (A) and a step (B) below once or a plurality of times to evaluate the delayed fracture characteristic of the metal material having been processed. Step (A): a step that brings an aqueous solution which includes a chloride ion into contact with a surface of the metal material to cause chloride of 1000 to 100000 mg / m2 in chloride amount to deposit to the surface. Step (B): a step in which the metal material to which the chloride has deposited in the step (A) is left stationary in an air atmosphere at a temperature from -50 to 10°C and at a relative humidity higher than or equal to a deliquescence humidity of the chloride.

The invention relates to the technical field of an austenitic stainless steel sensitization process, in particular to an in-situ dynamic observation method for the austenitic stainless steel sensitization process. Aiming at the problem that dynamic precipitation of carbides on an original grain boundary cannot be clearly and continuously captured by the existing observation means, the method is realized by the following steps of: firstly, carrying out electrolytic polishing on a sample to obtain an observation surface without a deformation layer, and ensuring that only the original austenite grain boundary is shown at high temperature; secondly, executing a thermal cycle program including rapid solid solution and controllable cooling to a sensitization temperature in the HT-CLSM, and locking a precipitation process in a target isothermal stage; finally, automatic timing image acquisition is performed on the fixed field of view during an isothermal period. The method realizes clear, dynamic and visual observation of the whole sensitization process, especially initial nucleation, reveals carbide precipitation kinetics, provides an effective tool for research of a sensitization mechanism and material evaluation, and is suitable for austenitic stainless steel.

The invention discloses an intelligent positioning device for non-destructive detection of precious metal. The intelligent positioning device comprises a detection shell; the base is installed at the bottom of the detection machine shell in a sliding mode; the rotary disc assembly is mounted on the base, and the rotary disc assembly comprises a first rotary disc and a second rotary disc which are arranged in parallel up and down and can rotate independently; the two first telescopic rods are evenly arranged on the first rotary disc and the second rotary disc in the circumferential direction, and the telescopic direction of the first telescopic rods faces the radial direction of the first rotary disc and the radial direction of the second rotary disc; the first rotating seat is fixedly mounted at the extending end of the first telescopic rod, and a second telescopic rod is rotationally arranged on the first rotating seat; the second rotating seat is fixedly mounted at the extending end of the second telescopic rod; and the clamp assembly is rotationally mounted on the second rotating seat.