55 results about "Cooling curve" patented technology

The invention discloses a forward and reverse optimization design method for a steel heat treatment process. The forward and reverse optimization design method comprises the following steps: step 1, establishing a steel model; acquiring a temperature field of the steel model based on an actual heat treatment process; based on the cooling mode, obtaining a cooling curve of the steel model; 2, based on the cooling curve and the temperature field, the microstructure of the steel model after heat treatment is obtained through calculation; 3, mechanical property calculation of the steel model is conducted according to the microstructure, and forward optimization of the steel heat treatment process is achieved; meanwhile, according to the requirements of the mechanical property of the steel model, the microstructure and the heat treatment process of the steel model are reversely determined, and reverse optimization of the steel heat treatment process is achieved. According to the method, the influence rule of the heat treatment process parameters on the mechanical property can be positively calculated, and the heat treatment process parameters can be reversely and optimally designed based on the mechanical property.

The invention relates to the technical field of freeze dryer control, and discloses an automatic control method and system for a constant-temperature bottle hanging type freeze dryer. The method comprises the following steps: acquiring multi-dimensional parameter data such as temperature gradient, vacuum degree fluctuation and material ice crystal form in the freeze dryer, performing real-time synchronous calibration through a multi-source data fusion engine, and generating an environment state matrix; and constructing a freeze-drying stage dynamic division model based on the matrix, accurately identifying the switching critical points of the pre-freezing stage, the primary drying stage and the secondary drying stage, and outputting and activating a corresponding temperature control strategy and a vacuum adjustment strategy according to the model. The temperature control strategy comprises a gradient cooling curve and a heating rate constraint, and the vacuum adjustment strategy comprises a pressure threshold sequence and a leakage compensation mechanism. The deviation between the ice crystal form of the material and the preset template is monitored through the closed-loop feedback unit, control strategy execution parameters are dynamically corrected, refined intelligent control over the freeze-drying process is achieved, and the stability of a freeze-dried product is guaranteed.

The invention relates to a thermal analysis method and a measuring device for a solidification process after modification treatment of aluminum and aluminum alloy, and the thermal analysis method comprises the following steps: adding seed crystal particles into an overheated melt in a vacuum environment or an inert atmosphere through a feeding device; cooling and solidifying the overheated melt, and collecting and recording a cooling curve T-t of the seed crystal particles through a high-speed temperature collecting device; the cooling curve is subjected to derivation calculation, and thermal characteristic parameters in the melt solidification process are represented; comparing the thermal characteristic parameters, and judging the deterioration effect. According to the method, the seed crystal particles are placed into the melt, melt solidification data are collected, and efficient judgment and high-throughput screening of the seed crystal particles and the second-phase modified refined seed crystal particles in the aluminum alloy are achieved by means of the quantitative relation among the seed crystal particle characteristics, the local temperature and the supercooling degree.

The invention provides a powder material cooling device, and relates to the technical field of powder cooling. The device comprises a feeding bin, a cooling bin and a discharging bin. A feeding pipe is fixedly connected to the center of the upper side wall of the feeding bin, a reducing inner pipe is fixedly connected to the middle of the feeding pipe, and an air inlet pipe is fixedly connected to the outer side wall of the reducing inner pipe. A cooling frame is installed in the cooling bin and composed of a plurality of cooling bent plates arranged in parallel, the cooling bent plates are wavy, a plurality of rows of cooling grooves are formed in the outer side walls of the cooling bent plates, and cooling inner cavities are formed in the cooling bent plates. The discharging bin is installed on the lower side wall of the cooling bin. By optimizing the structure and layout of the cooling bent plate, the contact area and contact time of a powder material and a cooling medium are remarkably increased, and therefore efficient cooling is achieved. Meanwhile, air and powder are mixed through the arrangement of the reducing inner pipe, the flowability of powder materials is improved while precooling is conducted, blocking is prevented, and it is ensured that the materials evenly enter the cooling bin.

The present application relates to a kind of Bi-doped rare earth iron garnet body single crystal growth techniques without substrate, comprising the following steps: raw material preparation, melt preparation, melt is cooled to crystal growth temperature, after melt temperature stabilizes, slowly lower the seed crystal rod installed with seed crystal, with melt, seed crystal rotates at a certain speed;During growth, crystal growth is carried out according to the set variable speed cooling curve, and block crystal is obtained after growing for a period of time;Block crystal is pulled out from melt, and slowly cooled to room temperature, and Bi-doped rare earth iron garnet body single crystal is obtained.The present application obtains large-size block single crystal, gets rid of the dependence of existing Faraday optical rotator growth on substrate, and reduces production cost.The present application can obtain Faraday optical rotator which is thinner than existing product thickness at the same wavelength, further reducing the volume.Moreover, multiple surfaces are simultaneously grown, and larger size crystal is obtained.

The invention discloses a forging process for regulating and controlling the grain size of high-toughness non-magnetic steel, and particularly relates to the technical field of non-magnetic steel forging.The forging process comprises the steps that parameters of a forged finished product and a forging ratio interval during forging each time are set, and parameters of a forged blank are detected through a detection assembly on an equipment body; according to the finished product parameters and the blank parameters, the forging ratio of each time of forging is calculated; the method comprises the following steps: detecting the size parameters of a blank, measuring the parameters of the blank after each forging in real time, finely adjusting the forging ratio of subsequent forging according to the parameters, measuring the cooling rate of the forged blank, drawing a cooling curve, determining a rapid cooling area, and rapidly cooling the blank in the rapid cooling area. Therefore, it is guaranteed that the blank has enough deformation during forging every time, original coarse grains can be thoroughly broken, sufficient recrystallization refining is induced, a cooling area of the blank is cooled, and the broken coarse grains are prevented from growing again during recrystallization.

The invention discloses a method for evaluating macroscopic non-uniformity of a block amorphous alloy casting based on equivalent thickness, and belongs to the technical field of amorphous alloy casting determination. The method comprises the following steps: step 1, preparing a plurality of amorphous alloy reflector small wafer castings with the diameter of 3 mm and the thickness of 0.8 mm, wherein the small wafer castings achieve mirror surface smoothness; 2, the thermal history of the amorphous alloy reflector small wafer casting obtained in the step 1 in the solidification process is quantitatively recorded; 3, all parts of the casting are determined to be all-volume amorphous, and thermodynamic parameters are obtained; 4, analyzing a cooling curve based on the thermodynamic parameters in the step 3; 5, after the solidification time and the equivalent thickness value of different typical characteristic areas of the amorphous alloy casting are obtained, structure property characterization is conducted on different areas of the casting, a relation is established with the structure property characterization, and evaluation of the macroscopic non-uniformity of the block amorphous alloy casting is achieved. The method aims at the problem of measurement of the macroscopic non-uniformity of the block amorphous alloy casting.

The invention discloses a superconducting magnet cooling process fault identification method and device, and the method comprises the steps: obtaining the real-time temperature of a superconducting magnet in a cooling process, and obtaining a deviation value between a first real-time temperature and a first theoretical temperature if the first real-time temperature at a first moment deviates from the first theoretical temperature of the superconducting magnet, the first theoretical temperature is the temperature corresponding to the first moment on the cooling curve; if the deviation value is within a first preset range, executing a first fault identification strategy; if the deviation value is not within the first preset range, executing a second fault identification strategy; and based on the first fault identification strategy and the second fault identification strategy, realizing fault identification in the cooling process. According to the method, the abnormal condition in the cooling process of the superconducting magnet can be recognized in time, the possibility that the superconducting magnet is damaged due to the fact that the optimal fault recognition time is delayed is avoided to a certain extent, an operator does not need to check the whole cooling process in real time in the whole process, the operation process is optimized, and the working efficiency is improved.

The invention relates to a metallurgical quality control method for vermicular graphite cast iron. The method comprises the steps that parameters in the melt vermicularizing process are collected in real time, and a process data set is generated; establishing a dynamic differential equation set comprising four stages of dissolution, diffusion, reaction and recession, and outputting effective vermicularizing element concentration time sequence data by solving the dynamic differential equation set; differentiating a cooling curve in the process that the melt is solidified to form the casting to obtain a cooling curve characteristic value, calculating a current vermicularizing rate predicted value and a vermicularizing change rate through a thermal analysis model, calculating real-time temperature field distribution and pressure field data, and calculating a shrinkage tendency index of each area of the casting through multi-physics field coupling, and dynamically adjusting the adding amount of the vermiculizer and the electromagnetic stirring parameters according to the index and the vermicularizing change rate. According to the method, through real-time monitoring, multi-physics field coupling analysis, dynamic adjustment of technological parameters and the like, the regulation and control capacity on the melt vermicularizing process and the casting quality is improved, and effective control over the shrinkage porosity defect is achieved.

The utility model discloses annealing equipment, include: annealing furnace, air inlet pipe, fixedly inserted in the bottom of annealing furnace, the circumferential surface of air inlet pipe is equipped with multiple groups along the axial distribution's through -hole no. 2, the air inlet pipe has the screw rod of coaxial rotation and inserts, the utility model discloses the cooperation of fan, series heat exchange pipe and water tank baffle, forms multistage cooling system, and high -temperature gas is fully heat exchanged with cooling medium in heat exchange pipe, and baffle prolongs cooling medium flow path, and the heat exchange efficiency is greatly promoted, realizes the step -by -step reduction of gas temperature, simultaneously, the design of air inlet pipe screw rod and plugging piece can quantize the opening area of through -hole no. 2, and the input of low -temperature gas is controlled, thereby realizes the multi -stage cooling curve of " heat preservation slow cooling fast cooling", matches austenite decomposition, pearlite transformation etc. Phase change demand in material annealing process, effectively avoids the material performance defect caused by improper cooling.

This invention relates to a method for cooling and storing a sample. The programmed cooling method is divided into several step-by-step cooling methods corresponding to a standard ambient cooling curve. In each step-by-step cooling, it is determined whether the sample needs to be raised or lowered by determining whether the actual ambient temperature T1 is equal to the target ambient temperature w. The actual ambient temperature T1 is then adjusted to match the target ambient temperature w, and the actual ambient temperature T1 is adjusted to match the target temperature T2 of that step-by-step cooling. After the sample is cooled in each step in sequence, it finally reaches the temperature required for cryogenic storage and is stored directly in a liquid nitrogen storage box. The sample cooling and storage method of this invention can simultaneously achieve programmed cooling and sample storage, and is suitable for processing single-layer samples.

The invention belongs to the field of metal material preparation, and discloses a Cu-Zn-Ti-Si alloy synergistically strengthened by a primary phase and a hypoeutectic structure and a preparation method for regulating components and cooling speed of the Cu-Zn-Ti-Si alloy. Comprising the following steps: (1) burdening; (2) in an argon atmosphere, heating pure copper until the pure copper is molten, and sequentially adding the copper-titanium intermediate alloy and the copper-silicon intermediate alloy; (3) after the intermediate alloy is completely melted, pressing the pure zinc block wrapped by the copper foil into the melt; (4) carrying out electromagnetic stirring, then raising the temperature to a target temperature, and carrying out flaming degassing treatment; and (5) after the melt is stable, pouring the melt into a preheated copper mold, monitoring a cooling curve in real time by using a built-in thermocouple, and accurately controlling the cooling rate by adjusting the preheating temperature and the pouring speed of the mold so as to obtain a target microstructure. The invention provides an effective technical approach for solving the problems that the matrix strength is insufficient and the hard phase is easy to fall off in the traditional single strengthening mode, and has important significance on the development of novel wear-resistant brass alloy.

This invention discloses a method, system, and equipment for controlling interlayer concrete pouring based on infrared thermal imaging. The method uses an infrared thermal imaging module and an environmental information acquisition module to acquire the concrete surface temperature field and environmental parameters in real time, constructing a spatiotemporal temperature field model and plotting cooling curves. Based on a preset interlayer temperature window and internal temperature rise threshold, a dual-objective optimization decision algorithm dynamically calculates the recommended coverage time window for the upper layer of concrete, achieving intelligent early warning. A quality traceability report is automatically generated after pouring. This invention solves the problems of traditional methods relying on experience and having limited perception, achieving precise and intelligent control of the interlayer pouring time interval and full-process quality traceability.

The application discloses a kind of based on organization prediction transverse crack determination method and system, comprising the following steps: S1, real-time collection L2 system slab identification information, when finding slab cutting, from L2 system collection the production performance information of this slab;S2, according to production performance information calculation obtains cooling curve, i.e. The temperature-time curve in the process from liquid to solid state;S3, according to production performance information, cooling curve, through slab organization prediction model module carries out the prediction of slab solidification organization information;S4, based on production performance information, slab solidification organization information, through transverse crack determination model module carries out the prediction of slab transverse crack, for the slab predicted as transverse crack carries out offline processing.The application fully considers the organization characteristics and performance in production of transverse crack occurrence, can reduce misjudgment rate, is favorable for improving hot charging hot delivery rate.

This invention discloses a temperature-controlled cooling device for ceramic glaze after firing, comprising a furnace body and a furnace cover. The furnace body is equipped with a rotating frame for supporting ceramic products, a controllable air intake component for introducing external cooling air, and a turbulence component for forcing airflow circulation within the furnace. The device also includes a detection component and a control component. The control component adjusts the opening degree of the controllable air intake component based on the temperature signal fed back by the detection component. In this invention, the control component dynamically adjusts the opening degree of the controllable air intake component using a PID algorithm based on the real-time temperature signal fed back by the detection component, and, in conjunction with the variable frequency start / stop and speed control of the turbulence component, can reduce the deviation between the actual cooling curve inside the furnace and the preset multi-segment, linear, or nonlinear process curve. Compared to traditional natural cooling or simple fan cooling, this refined control can effectively match the stress release dynamics of ceramic products of different materials and shapes, thereby reducing the defect rate of the ceramic glaze surface and significantly improving the yield.

A molten salt electrolyte primary crystal temperature measuring device belongs to the technical field of molten salt electrolyte physical property testing, and comprises a high temperature furnace, a crucible, a sealing cover, a support, a conductance cell, a thermocouple, a resistance measuring instrument, a temperature measuring instrument and a computer, and the conductance cell adopts a duplex integrated structure or a single-tube split structure. According to the molten salt electrolyte primary crystal temperature measuring device, the conductance cell is used for measuring the resistance of the molten salt electrolyte, a curve of the melt resistance changing along with the temperature is drawn, when non-conductive crystals are separated out from the surface of the electrode of the conductance cell, inflection points appear on the curve of the melt resistance changing along with the temperature, and the molten salt electrolyte primary crystal temperature is measured. The temperature corresponding to the inflection point is the primary crystal temperature of the molten salt electrolyte; and meanwhile, a thermocouple is used for synchronously measuring the melt temperature of the molten salt electrolyte, a melt step cooling curve is drawn, and through mutual verification of the melt step cooling curve and a curve of melt resistance changing along with the temperature, the identification reliability of the molten salt electrolyte primary crystal temperature is further improved.

This invention discloses a method and system for determining the construction window of steel slag asphalt mixture based on its thermal conductivity, belonging to the field of road engineering technology. The method includes: determining the steel slag content and optimal asphalt content of the steel slag asphalt mixture; performing a temperature compaction test on the steel slag asphalt mixture to obtain the minimum allowable compaction temperature; determining the thermal conductivity and specific heat capacity of the steel slag asphalt mixture based on the mix proportion, and constructing a thermodynamic simulation model incorporating the thermal conductivity and specific heat capacity of the steel slag asphalt mixture; acquiring real-time environmental parameters and real-time temperature field data of the underlying layer, inputting them into the thermodynamic simulation model, and predicting the cooling curve; extracting the time point in the cooling curve where the temperature drops to the minimum allowable compaction temperature, and determining the effective construction time window based on the paving start time. This invention achieves scientific and dynamic prediction of the construction time window, significantly improving the compaction quality and durability of steel slag asphalt pavement.

The application discloses a kind of CNC machine tool feeding system full working condition thermal characteristic dynamic coupling monitoring method, including acquisition machine tool cold state data;Record the steady-state temperature of each measuring point in thermal equilibrium state and screw tail elongation;Collect the temperature of each measuring point, screw tail elongation and positioning error under variable speed, variable load experiment;After shutdown, continue to monitor the cooling curve;Based on Newton cooling law fitting thermal time constant;Range analysis and variance analysis are carried out to orthogonal experiment data of four factors and three levels of temperature, speed, load and stroke, to obtain the priority of each influencing factor;Simulation model is constructed, and experimental data and simulation data are compared point by point, to calculate the average deviation of temperature, deformation and positioning error;If deviation is out of limit, reverse optimization friction coefficient and heat transfer coefficient until high-precision simulation model is obtained;Based on high-precision simulation model, extract experimental difficult-to-measure area data, track global thermal deformation transmission path, generate thermal error compensation table, and guide heat dissipation structure optimization.

A sample cooling and storage method is provided. A method of programmed cooling is divided into a method of cooling in several stages corresponding to a standard ambient cooling curve. In each stage of cooling, whether samples need to be raised or lowered is determined by checking whether an actual ambient temperature T1 is equal to a target ambient temperature w, so that the actual ambient temperature T1 is consistent with the target ambient temperature w, until the actual ambient temperature T1 is consistent with a target temperature T2 for this stage of cooling. After each stage of cooling in sequence, samples finally reach a temperature required for cryogenic storage, and are directly stored in a liquid nitrogen storage box. The sample cooling and storage method is capable of simultaneously realizing programmed cooling and sample storage, which is convenient for treating single-layer samples.

This invention relates to the field of industrial process control technology, specifically to an adaptive control method for an air-cooled system based on a residual heat attenuation model. The method includes: filtering real-time temperature measurements of the components to output an estimated temperature and instantaneous cooling rate; constructing a phase-change-free reference model to calculate the theoretical temperature; calculating the latent heat release intensity index based on the deviation between the estimated and theoretical temperatures and the instantaneous cooling rate; calculating the cross-sectional geometric thermal inertia factor based on the component's geometric parameters; calculating a proportional gain term based on the deviation between the estimated temperature and the target cooling curve temperature; constructing a negative phase-change damping term using the latent heat release intensity index and the cross-sectional geometric thermal inertia factor; and generating a fan frequency command. This invention solves the technical problems of existing technologies failing to identify cooling misjudgments caused by latent heat of phase change and failing to achieve differentiated cooling control for workpieces with different geometric characteristics.

The utility model relates to the technical field of industrial furnace cooling, and provides an industrial furnace cooling system capable of realizing controllable cooling speed, which comprises a heat discharge port arranged in a high-temperature furnace, and a cooling component is arranged outside the high-temperature furnace. The temperature of the high-temperature furnace can be accurately and stably reduced according to a set cooling curve in the cooling process, the problem that the temperature changes too fast or too slow in a traditional method is effectively solved, and the stability and the reliability of furnace temperature control are improved; heat in the high-temperature furnace is effectively discharged by using the frequency conversion fan, and the cooling process of the high-temperature furnace can be accelerated, so that the problem that the furnace temperature is slowly reduced due to a natural heat dissipation mode is avoided, the cooling efficiency is improved, and the temperature in the high-temperature furnace is ensured to be uniformly and stably reduced; according to the utility model, during the heating and high-temperature stages of the high-temperature furnace, the sealing cover can be tightly sealed, so that heat in the high-temperature furnace is effectively locked, and the heat is prevented from leaking.

The invention provides a heat conductivity coefficient measuring method suitable for a steady-state plate method heat conductivity coefficient testing device, which estimates steady-state heat transfer power based on a cooling curve so as to calculate the heat conductivity coefficient of a sample, and comprises the following steps: when the sample is heated and reaches a steady-state temperature gradient, recording the temperature of a heating disc and the temperature of a heat dissipation disc, removing the sample, and calculating the heat conductivity coefficient of the sample; after the heat dissipation disc is directly heated to a preset temperature by the heating disc, the heating disc is rapidly removed, data of temperature change along with time in the natural cooling process of the heat dissipation disc is recorded, and a cooling curve is obtained; a section with approximately linear temperature drop is selected from the cooling curve for fitting, and the cooling slope of the initial cooling stage is obtained; and respectively calculating convective heat transfer coefficients of the top surface, the bottom surface and the side surface of the heat dissipation disc based on the geometric dimension and the temperature difference of the heat dissipation disc, calculating a correction coefficient, and correcting an original heat conductivity coefficient estimated by the initial slope of the cooling curve. The method can be used for accurately measuring the heat conductivity coefficient of the poor conductor so as to realize the improvement of teaching experiment instruments.

The application relates to a cooling crystallization particle size intelligent control method, and relates to the technical field of crystallization particle size control.The method comprises the following steps: collecting the supersaturation of a solution in a target crystallization kettle and a crystal image sequence in real time, extracting current particle size distribution characteristics, and obtaining raw material impurity monitoring values and stirrer power fluctuation coefficients; a multi-section adaptive cooling curve is constructed; the target crystallization kettle is controlled to be cooled, and the collecting, constructing and controlling steps are iteratively executed until the crystallization process is completed, so that initial crystal slurry is obtained; the particle size distribution of the initial crystal slurry is measured, solid-liquid separation and drying treatment are performed, and finally, the crystal product is obtained.The application solves the problems that the traditional crystallization control relies on experience or a fixed mode, lacks dynamic adaptation capability, is difficult to cope with various disturbances, and leads to uneven product particle size and poor quality stability.

The invention discloses a tidal current energy unit array optimization method based on a simulated annealing algorithm. The array optimization method comprises the following steps: initializing parameters and setting constraint conditions; generating and evaluating an initial layout; a simulated annealing optimization engine: randomly disturbing the position of the turbine in a continuous space to break through the limitation of a discrete grid; a Metropolis criterion is adopted, global exploration and local development are dynamically balanced, and premature convergence is avoided; an adaptive cooling strategy and an index cooling curve are applied to guarantee optimization efficiency, and stable convergence is realized; accurately modeling a wake flow field; the position of the dynamic safety constraint system is associated with the wake flow radius, dynamic influence area judgment is achieved, the safety distance is automatically expanded in a high turbulence area, and the collision risk is reduced; generating a water turbine spatial distribution diagram, and visually displaying a wake flow avoidance strategy; drawing a power-temperature hyperbolic curve, tracking an optimization process in real time, and monitoring a convergence process; and finally, the reliability of the model is confirmed through an array flow field velocity distribution diagram.

The invention discloses an automatic cooling device for a steel-plastic composite pipe, and belongs to the technical field of extrusion molding and cooling of the steel-plastic composite pipe, the automatic cooling device for the steel-plastic composite pipe comprises a cooling pond for circularly collecting cooling and cooling waste water, and a cooling curved pipe is fixedly mounted in the cooling pond; two ends of the cooling curved pipe are respectively connected with a water inlet and a water outlet for controlling a coolant to flow in and out, two groups of portal frames are slidably mounted outside the cooling pond, water inlet pipes are fixedly mounted on the portal frames, and annular conveying pipes are arranged outside the water inlet pipes in a penetrating and sleeving manner and slidably sleeve the water inlet pipes; a fixing frame is fixedly installed in the annular conveying pipe, a plurality of water outlet pipe assemblies are fixed to the fixing frame in the axis direction at equal angles, the water outlet pipe assemblies are in through connection with the annular conveying pipe, the water outlet pipe assemblies can adjust the spraying range and the distance between the water outlet pipe assemblies and the pipe, it is kept that the outer portion of the pipe can be evenly cooled, and the quality of the prepared pipe is improved.

The invention relates to the technical field of anode carbon blocks, and discloses an intelligent anode carbon block cooling and transferring system which comprises a cooling control module, a transferring management module, an intelligent optimization module, a safety monitoring module, a self-adaptive control module and a report generation module. By making multi-stage dynamic cooling strategy parameters and setting differentiated cooling curves for carbon blocks of different specifications, the cooling treatment accuracy of the carbon blocks of different batches is guaranteed, and meanwhile, the temperature monitoring unit is used for collecting surface and internal temperature distribution data of the carbon blocks in real time; whether local overheating and uneven cooling occur in the cooling process or not can be detected in real time, the stability of the cooling quality of the carbon block is guaranteed, the risk of thermal stress cracks is further reduced, when the posture is detected to be abnormal, the moving track is corrected in real time through a servo motor of the transfer execution unit and a path planning algorithm, and the stability of the carbon block is improved. And the stability and the safety in the carbon block transferring process are ensured.

The utility model relates to the technical field of device calibration, in particular to a programmed cooling simulation device, which is provided with a simulation gradient cooling box and a plurality of temperature measurement nodes which are uniformly distributed in the simulation gradient cooling box by taking a central axis as a central line at equal intervals, so that the state of a sample entering the programmed cooling box can be simulated, and the temperature measurement nodes can be used as temperature measurement nodes. The samples at all the hole sites are kept at a synchronous cooling level, and the cooling rate is consistent; a space is formed between the metal module placed at the bottom of the groove of the simulated gradient cooling box and the boss, so that the effect of slow cooling can be achieved; a temperature sensor and a data processing and communication board are installed on a circuit board arranged on a temperature measurement node, when the temperature measurement node is activated when being placed on a special interface, a computer sets the temperature sampling interval and the temperature recording time of the temperature measurement node, and collects and records a cooling curve of the program cooling simulation device placed in an ultralow temperature device. The gradient cooling rate is calculated, and the effect of the programmed cooling box can be accurately evaluated.

The invention provides rapid bright quenching oil and a preparation process thereof, and relates to the technical field of quenching oil, the quenching oil comprises the following components: 64-85% of CTL base oil, 2.5-7% of a composite antirust agent, 3-9% of a composite antioxidant, 4-9% of a thickener, 5.5-10.5% of a wetting dispersant, and 0.5-1% of oleic acid. According to the rapid bright quenching oil developed on the basis of CTL base oil, ideal balance of hardenability and deformation control is successfully achieved by precisely regulating and controlling a cooling curve, performance consistency of long-term use is guaranteed through excellent thermal stability and oxidation resistance of the rapid bright quenching oil, meanwhile, safety and environmental protection performance are remarkably improved through the characteristics of high flash point and low volatilization, and the rapid bright quenching oil is suitable for industrial production. Finally, an innovative quenching medium solution with excellent comprehensive performance, long service life and remarkable economic benefits is provided.

The invention discloses a wire rod Stelmor air cooling simulation calculation method, and relates to the technical field of finite element analysis, and the method comprises the steps: constructing a three-dimensional geometric model of wire rod stacking, calibrating a wire rod corresponding region in the three-dimensional geometric model as a region A, and calibrating a remaining region except the region A as a region B, calibrating a curved surface where the area A and the area B intersect as a surface alpha; respectively setting material attributes, boundary conditions and initial conditions of the region A, the region B and the surface alpha, and carrying out grid division to form a three-dimensional finite element model; and performing transient process calculation on the three-dimensional finite element model, and obtaining a cooling curve of the target node temperature changing along with time. According to the method, a comprehensive model of heat transfer, a flow field and surface-to-surface radiation is combined, and the problem that the number of nodes and the number of units are increased explosively due to the fact that a large number of units need to be filled in the length direction in the long and thin wire rod structure in the three-dimensional space is solved.

The application discloses a kind of alloy melt supercooling degree correction methods for electromagnetic suspension experiment, belong to material science and solidification process measurement field.The method includes: in electromagnetic suspension device, alloy melt is carried out cooling solidification experiment, obtains experimental cooling curve;Establish multi-physics field simulation model, numerical simulation cooling process;With the section before metastable liquid phase transition occurs in experimental cooling curve as benchmark, adjust specific parameters in model, make simulation cooling curve and the section accurate match, and after the matching simulation cooling curve is extended to metastable liquid phase transition until the stage before recalescence phenomenon appears, to obtain corrected simulation cooling curve;According to recalescence temperature inflection point on experimental cooling curve, determine recalescence starting time;With the time as benchmark, calibrate corrected recalescence starting temperature on simulation cooling curve, and based on the temperature, corrected supercooling degree is obtained.The application can accurately obtain the real supercooling degree of alloy melt.