781results about "Investigating phase/state change" patented technology

The invention relates to the technical field of new energy aluminum alloy precision casting multi-modal quality monitoring, in particular to a new energy aluminum alloy precision casting multi-modal quality monitoring device and method. According to the technical scheme, the new energy aluminum alloy precision casting multi-mode quality monitoring device comprises a quality monitoring device body, an infrared thermal imager probe, a germanium single crystal protection lens, an integrated spectrometer probe debugging port, an acoustic detection microphone array and a honeycomb acoustic shielding cover. An infrared thermal imager probe is arranged on one side of the quality monitoring device main body, and a germanium single crystal protection lens is arranged on the outer side of the infrared thermal imager probe; synchronous acquisition and fusion analysis of multi-physical field data are realized by integrating six modes of spectrum, infrared thermal imaging, vibration, machine vision, acoustics and pressure deformation, and meanwhile, when the shrinkage risk is predicted by the infrared thermal imaging, a die-casting process compensation mechanism is automatically triggered to kill defects in the germination stage, so that the defect rate is greatly reduced.

The invention relates to the technical field of medium phase state determination, in particular to a PVT analyzer and method suitable for multi-component fluid medium phase state determination, and the PVT analyzer comprises a determination assembly, a test cylinder, a balance cylinder, a pressurization cylinder, a gas distribution pipeline, a first driving mechanism and a second driving mechanism. The structure is reasonable and compact, combination of gas with various components can be achieved through the multiple gas cylinders and the gas distribution pipeline, mixing of the gas according to the set ratio can be achieved by adjusting the gas distribution valve, the multiple gas cylinders can inject the gas into a rodless cavity of the pressurization air cylinder through the gas distribution valve and the gas distribution pipeline, and the gas injection efficiency is improved. The second driving mechanism drives the piston rod of the pressurizing air cylinder to continuously input gas in the rodless cavity of the pressurizing air cylinder into the rodless cavity of the balance air cylinder through the pressurizing pipeline and the one-way valve, so that the pressure of the rodless cavity of the balance air cylinder can be increased; and the precise gas distribution and gas pre-pressurization functions of multi-component gas can be realized.

The invention provides a shale oil pyrolysis adsorption oil and free oil correction method based on a nuclear magnetic experiment, and belongs to the field of exploration and development of unconventional oil and gas fields. According to the method, on the basis of a shale rock physical experiment and a shale nuclear magnetic resonance experiment, the occurrence space and content of adsorbed oil are determined by using multi-state nuclear magnetic resonance experiments such as original sample, saturated oil, washing oil and different temperatures, so that a nuclear magnetic adsorbed oil model is constructed, and the content of the adsorbed oil is determined by further combining a different-temperature-order parallel crushed sample lithologic pyrolysis experiment-nuclear magnetic combined measurement experiment. The content of the free oil and the content of the adsorbed oil are calculated through the two-dimensional nuclear magnetism T1-T2 spectrum semaphore, the content of the free oil and the content of the adsorbed oil are compared and analyzed, the difference between the nuclear magnetism adsorbed oil and the pyrolysis adsorbed oil is matched with a free hydrocarbon curve to achieve adsorbed oil correction, and the free oil and the adsorbed oil are obtained.

The invention relates to the technical field of oil product detection, in particular to a full-automatic condensation point determinator and a determination method.The full-automatic condensation point determinator comprises a base and a test tube, the top of the base is fixedly connected with a mounting base, the surface of the base and the surface of the mounting base are provided with a test bath mechanism and a supporting mechanism, and the test bath mechanism enables a motor to drive a test bath to rotate; the rotation angle of the motor is controlled through a preset program, precise positioning is achieved, the tedious operation of hole-by-hole adjustment of the original structure is avoided, the rotating shaft is locked through mechanical clamping, angle deviation in the testing process is prevented, then manual adjustment is replaced by the motor and the electric push rod, and the test efficiency is improved. The double locking effect is achieved, accidental displacement can be prevented, and precision and efficiency are improved; according to the clamping mechanism, the four arc-shaped clamping plates apply uniform radial pressure through the first springs to clamp the outer wall of the test tube, the inner diameters of the clamping plates are gradually increased from top to bottom, and the clamping mechanism is compatible with test tubes with different outer diameters.

The invention provides a method for on-line detection of spheroidization rate and shrinkage porosity index of nodular cast iron, which comprises the following steps: pouring molten iron subjected to spheroidization into a thermal analysis sample cup, recording the change rule of the temperature of the molten iron in the thermal analysis sample cup along with time, and drawing a cooling curve of solidification time-temperature; according to the shape of the cooling curve, determining which of a hypoeutectic solidification mode, a near-eutectic solidification mode and a hypereutectic solidification mode the solidification mode of the spheroidized iron liquid belongs to; different calculation formulas are adopted for predicting the nodularization rate and the shrinkage porosity index of the nodular cast iron according to the three different solidification modes. The method comprises the following steps: drawing a cooling curve between solidification time and temperature of molten iron, carrying out numerical differential treatment on the curve to obtain a temperature value of a feature point, and judging which solidification mode of the molten iron belongs to a hypoeutectic solidification mode, a near-eutectic solidification mode and a hypereutectic solidification mode according to the shape of the cooling curve. And further calculating the spheroidization rate and shrinkage index of the spheroidized molten iron through a formula.

The invention discloses a method for testing a melt index. The method comprises the following steps: preheating a melt charging barrel to a preset temperature, and carrying out heat preservation for a first preset time; feeding to be measured is loaded into a containing cavity of a melting charging barrel, a piston rod is inserted into the melting charging barrel, a mass piece with the first weight is added to the piston rod, the feeding to be measured is melted into molten feeding under the pressure of the piston rod and is compacted, and therefore falling materials with the preset length are exposed out of a discharging opening of the melting charging barrel; switching the weight of the mass piece on the piston rod from the first weight to the second weight, so that the to-be-detected feed flows out of the discharge port under the pressure of the piston rod and is cut to obtain a plurality of sections of first to-be-detected samples, and calculating the melt index of the to-be-detected feed; the range of the first weight is 2.16 kg to 10 kg, and the range of the preset length is 1 cm to 30 cm. Therefore, the air in the melt charging barrel can be exhausted, the components of the to-be-tested feed are more uniform, the uniformity of the first to-be-tested sample is improved, the fluctuation of the tested melt index is reduced, and the accuracy of the test result is improved.

The invention relates to the technical field of optical-mechanical system glue application, and discloses a system and a method for testing glue curing shrinkage stability of an optical-mechanical system of a laser machine. The system comprises a pressing and fixing device which comprises a spring, a pull rod, a needle gauge, a pressing piece and a fixing block, and position switching of the needle gauge between the inner surface and the outer surface of the fixing block is achieved by rotating the pull rod head corresponding to the pull rod; the glue curing unit comprises a UV curing device, a precise temperature control heating platform and a moisture curing environment generator; the light source unit comprises a laser light source and a stable support structure with a clearance fit hoop; the optical machine gluing unit comprises a mirror base and a reflecting mirror; the pressing and fixing device is rigidly connected with the optical platform through the aluminum profile portal frame; the data acquisition unit comprises a CCD (charge coupled device) sensor, a three-dimensional adjustable fixing device and an analysis module, and the analysis module generates a multi-dimensional stability index by resolving the time sequence data of the coordinates of the reflected light spots acquired by the CCD sensor in real time so as to complete the glue curing shrinkage stability test.

The invention discloses a thermal insulation pipe fitting thermal insulation performance detection device, and particularly relates to the technical field of thermal insulation performance detection devices.The thermal insulation pipe fitting thermal insulation performance detection device comprises an outer frame, a detection assembly is slidably installed on the upper portion of the left side wall and the upper portion of the right side wall of the inner surface of the outer frame jointly, and a limiting assembly is fixedly installed on the lower portion of the outer surface of the detection assembly; an observation assembly is fixedly installed on the lower portion of the left side wall and the lower portion of the right side wall of the inner surface of the outer frame. According to the thermal insulation performance detection device for the thermal insulation pipe fitting, through the arranged detection assembly, in the using process, the detection assembly can be matched with the hydraulic cylinder to move downwards, then thermal insulation performance detection is conducted on the thermal insulation pipe fitting, meanwhile, the detection assembly is matched with the limiting assembly, and the thermal insulation pipe fitting can be limited; and after being limited, the limiting component is matched with the observation component, so that rotary thermal insulation performance detection on a plurality of thermal insulation pipe fittings is realized, the detection process of the whole device is relatively short, and sampling detection on the thermal insulation pipe fittings is convenient to realize.

The invention relates to the technical field of material testing, and discloses a phase change temperature calibration method and system for a phase change material, and the method comprises the steps: collecting the surface temperature distribution data and crystal structure parameters of the phase change material based on a bimodal synchronous monitor, and building a temperature-structure incidence matrix; when the parameters of the crystal structure suddenly change, determining surface temperature distribution data corresponding to a sudden change moment based on the temperature-structure incidence matrix, and calculating an initial phase change temperature interval; constructing a nonlinear mapping model of the initial phase-change temperature interval and the heating rate, and performing dynamic compensation on the initial phase-change temperature interval based on the nonlinear mapping model to obtain a corrected phase-change temperature; inputting the corrected phase change temperature into a gradient temperature control module containing a standard sample; and comparing the offset of the actual phase change position and the theoretical position of the reference material, and reversely correcting and correcting the phase change temperature based on the offset to obtain the final calibration temperature. The calibration accuracy of the phase change temperature of the phase change material can be improved.

The invention discloses a coal ash characteristic intelligent regulation and control method and system based on big data analysis, and relates to the technical field of coal ash characteristic regulation and control, and the method comprises the steps: obtaining coal ash parameter information, obtaining coal ash fusion characteristic temperature information based on a coal ash fusibility test according to the coal ash parameter information, and obtaining a coal ash viscosity-temperature characteristic curve based on the coal ash parameter information. According to the method, the fusibility of the coal ash is accurately analyzed by testing the fusibility of the coal ash cone, the fusibility of the coal ash in the actual production environment is accurately evaluated through the coal ash fusibility characteristic temperature, the accuracy of coal ash characteristic regulation and control is ensured through the coal ash characteristic regulation and control node, the coal ash characteristic regulation and control efficiency is improved, and the method is suitable for industrial production. The coal ash characteristic regulation and control mode is specifically limited through the coal ash regulation and control reagent proportion information, the situation that the coal ash characteristic regulation and control accuracy is affected by the superposition effect of different regulation and control reagents is avoided, and the coal ash characteristic regulation and control stability is improved.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention relates to the technical field of gas hydrate phase equilibrium tests, in particular to a gas hydrate phase equilibrium condition testing device and method under the normal pressure condition, and the testing device adopts a core framework integrating hydrate synthesis and phase equilibrium testing under the normal pressure into the same reaction kettle unit. And aiming at the functional difference of phase balance test under synthesis and normal pressure, independent high and low temperature control subsystems and pressure control modules are respectively arranged, so that the efficiency of a high-pressure synthesis stage is guaranteed, and the precision requirement of a low-pressure test stage is met. According to the testing method, a constant-volume gradual heating decomposition method is adopted, high-precision micro-pressure change monitoring is combined, and the phase equilibrium point of the hydrate under the low-pressure condition can be accurately captured. The problem that hydrate phase equilibrium experiment data in the area near the normal pressure is deficient is solved, and key data support can be provided for model verification and safety design.

The invention belongs to the technical field of heat exchangers, and particularly relates to a testing system of a phase change energy storage heat exchanger. The test system comprises a water storage unit, a heating unit, a cooling unit and a phase change energy storage heat exchanger unit. The test system can quickly test multiple alternate cooling and heating circulation working conditions such as same-direction, reverse and horizontal flow of the cooling and heating loop. In addition, the outlet temperature of the fluid working medium of the phase change energy storage heat exchanger can be accurately obtained in real time, and the heat storage capacity of the phase change energy storage heat exchanger can be accurately verified. Besides, basic data are provided for engineering design of the phase-change energy storage heat exchanger, the design condition of the phase-change energy storage heat exchanger can be evaluated, the optimization direction of application of the phase-change energy storage heat exchanger in the aerospace field is fully known and mastered, design errors of the phase-change energy storage heat exchanger are reduced, and the design efficiency is improved. And the technical development of application of the phase change energy storage heat exchanger to the high-power space load is promoted.

The invention relates to the technical field of phase change heat transfer, and particularly discloses a multi-field coupling enhanced phase change heat transfer visualization experiment research device which comprises a vacuum cavity provided with a heat exchange block mounting hole, an auxiliary cooling device mounting hole, first to fifth thermocouple mounting holes, a wire mounting hole, an electric field, a magnetic field mounting position and an electromagnetic wave incident port. The heat exchange block is mounted in the heat preservation sleeve; the auxiliary cooling device is mounted in the auxiliary cooling device mounting hole; a heating rod mounting hole is formed in the bottom of the end cover; the heating rod is mounted in the heating rod mounting hole; the heat preservation sleeve is installed in the heat exchange block installation hole and provided with an ultrasonic oscillation generating device installation position. The electric field-magnetic field generating device is provided with an electric field generating device and a magnetic field generating device. The influence of the superheat degree and the supercooling degree on enhanced thin liquid film boiling heat transfer and enhanced condensation heat transfer can be researched by changing the heating rod and the heat exchange fluid flow.

The present invention relates to the field of material testing technology and discloses a method and system for calibrating the phase change temperature of a phase change material. The method comprises: collecting surface temperature distribution data and crystal structure parameters of the phase change material using a dual-modal synchronous monitor and establishing a temperature-structure correlation matrix; determining the surface temperature distribution data corresponding to the mutation moment based on the temperature-structure correlation matrix when the crystal structure parameters undergo a sudden change, and calculating the initial phase change temperature range; constructing a nonlinear mapping model between the initial phase change temperature range and the heating rate, and dynamically compensating the initial phase change temperature range based on the nonlinear mapping model to obtain a corrected phase change temperature; inputting the corrected phase change temperature into a gradient temperature control module containing a standard sample; comparing the offset between the actual phase change position of the reference material and the theoretical position, and reversely correcting the corrected phase change temperature based on the offset to obtain a final calibration temperature. The present invention can improve the accuracy of phase change temperature calibration of phase change materials.

The invention relates to the technical field of pour point and condensation point measurement, in particular to a pour point and condensation point precise measurement method, system and equipment. The method comprises the following steps of: determining a condensation tendency index according to a temperature data sequence fluctuation characteristic, a humidity data sequence change trend and a coupling difference characteristic between temperature and humidity data sequences; a control redundancy index is determined according to the continuous working time of the fan, the condensation tendency index and the numerical deviation characteristics between the power and humidity data sequences; according to the instantaneous change characteristics of adjacent data points in the humidity data sequence, the temperature data sequence and the power data sequence of the current time window, determining a collaborative benefit index; determining a comprehensive evaluation score according to the collaborative benefit index and the control redundancy index; controlling the fan to execute a corresponding operation strategy according to the comprehensive evaluation score and a preset mapping relation between the score and the operation strategy; the operation strategy is repeatedly adjusted until the pour point and the condensation point of the sample are determined, and therefore the fan power responds to environment changes in real time.

The utility model relates to the technical field of concrete and mortar detection, in particular to a concrete and mortar mixture setting time measuring device which comprises a base, and a stand column is fixedly connected to one side of the base. The electric control box is arranged on the base, and a supporting platform is formed at the top of the electric control box; the moving assembly is arranged on the supporting platform at the top of the electric cabinet, the moving assembly comprises a first guide rail and a second guide rail, and the first guide rail is perpendicular to the second guide rail; a plurality of test mold cups are arranged, the test mold cups are arranged on a moving assembly, and the test mold cups are driven by the moving assembly to move; the load applying assembly is fixed to the top of the stand column; and the probe assembly is installed at the output end of the load applying assembly, and the load applying assembly drives the probe assembly to move up and down. According to the utility model, the working efficiency and the accuracy of test results can be improved.

The invention discloses a cold region coating concrete critical freeze-thaw frequency estimation and service life prediction method and system, and the method comprises the steps: firstly obtaining a plurality of groups of indoor rapid freeze-thaw test data to construct a sample data set; and constructing a damage model for representing the relationship between the freezing and thawing cycle times and the freezing and thawing damage degree of the coating concrete. And then on the basis of the constructed sample data set, an optimization algorithm is adopted to search for a global optimal model parameter combination capable of enabling an output result of the damage model to be optimal, an optimal damage model is constructed on the basis of the searched global optimal model parameter combination, and a quantitative relation between the damage degree and the freezing and thawing cycle number is established. And finally, according to a damage degree threshold value specified by the coating concrete to be estimated, performing inversion calculation through the optimal damage model, accurately estimating the indoor critical freeze-thaw times required by attenuation of the coating concrete to the damage degree threshold value, and providing a basis for subsequent accurate prediction of the service life of the coating concrete.

The invention provides a method for determining the spontaneous combustion evolution process of end slope coal of a strip mine, and belongs to the field of geotechnical engineering geological disaster prevention and control and the field of mine safety and environmental protection. Updating the porosity, the permeability and the range of the combustion space area in the pre-established three-dimensional geologic model by adopting the three-dimensional distribution of the porosity of the bending subsidence zone, the permeability of the fissure zone, the permeability of the caving zone and the porosity of the caving zone in the combustion space area; performing coal fire evolution simulation again according to the updated pre-established three-dimensional geologic model to obtain a coal fire development range, an updated real-time temperature field range and a gas concentration field; and if the combustion cannot be continued, outputting a final coal fire development range and an updated real-time temperature field range. According to the method, the efficiency and accuracy of open-pit mine end slope coal fire treatment are effectively improved.

The application discloses a kind of phase change material heat storage performance testing device and testing method thereof, the testing device is by vacuum measurement box, heat flow meter I, data acquisition instrument, cold end pipeline, cold water tank, hot water tank, circulating pipeline, circulating pump I, bottom plate, hot end pipeline, circulating pump II, heat flow meter II, pressure relief button, lever support, top cover lever, vacuum pump and the like part composition, the testing method is by preparing sample to be measured, initialization testing device, setting experimental gas pressure, setting test temperature and preheating device, start heat storage performance test, restore initial state and read test data 7 step composition.The application structure is simple, easy and fast to operate, test principle is clear, test is accurate and cost is lower, can efficiently carry out heat storage performance test to phase change material and directly reflect the specific parameters of phase change material heat storage performance through test, suitable for application and popularization in actual production.

The invention discloses a method for identifying coal spontaneous combustion tendency and a low-temperature oxidation critical point based on potential signals, which comprises the following steps: heating different types of coal samples to obtain potential signals on the surfaces of the coal samples, and calculating to obtain fractal dimension width delta alpha and spectral shape width delta fm of the coal samples; then, the change conditions of the fractal dimension width delta alpha and the spectral shape width delta fm in the heating process are obtained, the temperature value corresponding to the initial sudden change of the fractal dimension width delta alpha is determined as the low-temperature oxidation critical point of the different types of coal, and then the temperature value corresponding to the extreme point of the spectral shape width delta fm of the different types of coal is obtained; and the fractal dimension width delta alpha is suddenly changed from the first time and continuously forms the width of an abnormal zone, so that the spontaneous combustion tendency of different types of coal is judged. According to the method, on the premise that the low-temperature oxidation critical points of different types of coals are accurately recognized, the spontaneous combustion tendentiousness of different types of coals can be sorted, meanwhile, operation is easy, consumed time is short, and the working efficiency of determining the low-temperature oxidation critical points of different types of coals is effectively improved.

The invention relates to the technical field of high-temperature experiment earth science, in particular to a sulfide standard sample and a preparation method thereof. The method comprises the following steps: preparing a raw material of a sulfide standard sample based on a target element component in a target natural sulfide and the content of the target element component; a quartz tube with one open end and one closed end is filled with first predetermined height quartz powder, a raw material of a sulfide standard sample, second predetermined height quartz powder or a quartz column, elemental sulfur, and third predetermined height quartz powder and / or a quartz column in sequence; sealing the filled quartz tube; and performing heat treatment on the raw materials of the sulfide standard sample in the sealed quartz tube to obtain the sulfide standard sample. According to the method, high-resolution analysis of micro-area information can be realized by utilizing the in-situ standard sample, so that irreplaceability is realized, in-situ analysis does not need a complicated pretreatment process, and a solid sample can be directly analyzed and measured.

The invention is suitable for the technical field of heat pipe experiment systems, and provides a heat pipe experiment system and method based on visual visualization and dual-seal temperature control, and the system comprises a visual heat pipe, a temperature adjustment module, a data collection module, a liquid injection module and a glass temperature monitoring feedback module. The visual heat pipe adopts an aluminum alloy cover plate, visual glass and a copper substrate to form a double-sealing structure. The system integrates a glass temperature monitoring and feedback mechanism, prevents the observation window from fogging, prevents the temperature of the observation window from being too high, and guarantees high-definition visual observation. And the data acquisition module synchronously records the thermal parameters and the dynamic image of the condensed liquid drop, and quantitatively analyzes the behavior of the liquid drop through an image processing technology. The system can realize high-definition observation, high-precision temperature control and quantitative analysis of the internal condensation process of the flat heat pipe at different inclination angles and under different working conditions, and is suitable for in-depth research of a phase-change heat exchange mechanism and heat pipe performance.

The utility model provides a concrete setting time detection device. The concrete setting time detection device comprises a box body, a constant temperature system, a sample bearing system and a test cleaning system, the box body is provided with a top cover which can be opened and closed, the sample bearing system and the constant temperature system are arranged in the box body, the sample bearing system comprises a bearing disc which is provided with a sample groove and can rotate, and the constant temperature system is located above the sample bearing system. On the other hand, the sample is covered when the test is not performed. The test cleaning system comprises a translation module and a lifting module which are used for driving the probe to move, and the probe enters a cleaning water tank to be cleaned and subsequently dried after being tested. The device is simple in structure and high in automation degree, and the detection efficiency is greatly improved.

The invention provides a modified engineering plastic melt index real-time monitoring method which comprises the following steps: determining a melt index difference value of adjacent monitoring points by acquiring a melt index value of each section of an extrusion production line; obtaining the number of shearing cycles of the extrusion production line, identifying the fiber shearing damage degree of each section according to the melt index difference and the number of shearing cycles to obtain fiber damage distribution, and determining the fiber fracture position according to the fiber damage distribution; the melt index difference value corresponding to the fiber fracture position is analyzed by obtaining the melt index of the fiber fracture position, and the monitoring point interval is dynamically adjusted through the melt index difference value; and obtaining the melt index value and the fiber shortening amplitude after the interval adjustment of the monitoring points, and comparing the melt index change and the fiber length loss of each monitoring point to obtain the corresponding distribution of the fiber shortening amplitude and the melt index value.

The invention provides a method for identifying early strength of concrete based on piezoelectric active sensing, which comprises the following steps of: monitoring sensing signals of all piezoelectric ceramic sensors belonging to a piezoelectric ceramic sensing array embedded in a concrete structure, identifying solidification characteristic information in the concrete structure through thermal infrared, and identifying the early strength of the concrete based on the solidification progress characteristic information. Effective sensing signals associated with the concrete in the early stage are screened, and it is guaranteed that the sensing signals accurately and truly reflect the structural mechanics condition of the concrete in the whole early stage; based on the spatial distribution information of the piezoelectric ceramic sensing array, the effective sensing signal is converted into three-dimensional pressure distribution information in the concrete structure; strength change characteristic information of the concrete structure is obtained through evolution analysis of three-dimensional pressure distribution information, so that a strength abnormal area in the concrete structure is identified, discrete strength data in the concrete structure is subjected to association processing, and overall strength evolution representation in the concrete structure is realized. And the identification credibility of the early strength of the concrete is improved.

The invention belongs to the field of material microstructure research and analysis, and particularly relates to a quantitative statistics and analysis method for precipitated phases in nickel-based superalloy. Aiming at the defects of the traditional image analysis method for the precipitated phase in the nickel-based superalloy in the aspect of processing a complicated, multi-scale and multi-phase coexisting microstructure, the method comprises the following steps: detecting a nickel-based alloy sample by adopting an energy dispersion spectrometer, analyzing a detection map by adopting Image J, Image pro plus and Origin software, and analyzing the analysis result by adopting a spectrograph; and judging the regulation and control capability of a certain set process parameter on the precipitated phase in the nickel-based alloy sample according to an analysis result. When plt; when the p value is 0.05, it is indicated that a certain set technological parameter has the preliminary regulation and control capacity on the precipitated phase, refining and homogenization of the size of the precipitated phase can be promoted in a limited mode, and the smaller the p value is, the higher the regulation and control capacity is; when plt; when the time is 0.01, a certain set process parameter has a remarkable regulation and control effect on the precipitated phase, and the precipitated phase is homogenized in statistical significance.

The invention discloses a method for evaluating the high-temperature metallurgical performance of sintered ore, which comprises the following steps: carrying out a molten drop experiment on the sintered ore, obtaining various soft-melting dropping performance index parameters of the sintered ore in a soft-melting zone, comparing the soft-melting dropping performance index parameters with a reference level, and if the soft-melting dropping performance index parameters of the sintered ore all meet the requirements of the reference level, judging that the sintered ore is in the high-temperature metallurgical performance. If yes, the dripping temperature of the dripping object is obtained, and the corresponding temperature when the dripping object of the soft melting belt reaches the first weight value is obtained and defined as the middle-stage dripping temperature; calculating a difference value between the mid-term dripping temperature and the dripping temperature, comparing the difference value with a first preset value, and judging that the high-temperature metallurgical performance of the sintered ore is suitable for blast furnace production according to a comparison result, or judging that the high-temperature metallurgical performance of the sintered ore is not suitable for blast furnace production according to the comparison result. According to the method for evaluating the high-temperature metallurgical performance of the sinter, the difficulty degree of slag-iron separation of the sinter in the soft melting dripping process can be evaluated, and the application of the detection index of the high-temperature metallurgical performance of the sinter in production is enhanced.

The invention discloses a test device and method for freezing and thawing cycle indoor simulation of a seasonal frozen river slope, and belongs to the technical field of river dynamics. The device comprises a test box body, an environment temperature adjusting assembly and a plurality of data acquisition assemblies; a soil body layer for simulating a side slope and a water body for simulating a river are accommodated at the inner bottom of the test box body; the environment temperature adjusting assembly is arranged at the top of the test box body, and a water inlet pipe and a water outlet pipe which extend into the box body are arranged on the test box body; the plurality of data acquisition assemblies are distributed in the soil body layer, in the water body, in the sample box body and / or outside the test box body; the bottommost part of the soil body layer extends below the water body; a waterproof heating piece is arranged on the contact interface of the soil body layer and the bottom of the water body; the heating piece and the environment temperature adjusting assembly are independently adjusted. In the water body freezing stage and the stable freezing stage, the heating piece can start heating. According to the invention, the freezing and thawing cycle process of the seasonal frozen river slope can be accurately simulated.

The invention provides a method for simulating and measuring phase volume fraction change in a metal material additive manufacturing process. The method comprises the following steps: preparing a sample; mounting the sample to an experimental device; performing cyclic heat treatment on the sample to simulate an additive manufacturing process, and acquiring synchrotron radiation X-ray two-dimensional diffraction patterns of the sample at different moments; converting the two-dimensional diffraction pattern into a one-dimensional diffraction pattern; and refining the one-dimensional diffraction pattern by using a Rietveld method to obtain a change chart of the volume fraction of each phase of the sample along with time. According to the method, the heating process of a lower-layer material in the additive manufacturing process is simulated by conducting cyclic heat treatment on the material, the phase change of the material is detected through synchrotron radiation X-rays, and the complex unbalanced solid-state phase change of the lower-layer material in the additive manufacturing process of a metal material can be researched in situ; and then the additive manufacturing process is optimized in an auxiliary mode, and the alloy performance is regulated and controlled.