736 results about "Cooling time" patented technology

The invention provides an intelligent toy injection molding process optimization method which comprises the following steps: aiming at a key temperature control area, calculating an optimized cooling time value and a cooling water temperature set value through a correlation model of thermodynamic attribute parameters of toy materials, cooling time and cooling water temperature, and issuing the cooling time value and the cooling water temperature set value to an injection molding machine control system, meanwhile, according to the temperature fluctuation amplitude of the key area, the forming pressure value is finely adjusted, so that the temperature fluctuation of the key area is reduced; in the injection molding process, temperature data of multiple positions on the surface of the mold are collected in real time and transmitted to the central processing unit, the central processing unit conducts filtering and denoising on the collected temperature data and then judges whether the temperature data exceed the optimized temperature control range or not, if yes, an alarm mechanism is triggered, and meanwhile operation parameters of the injection molding machine are automatically adjusted. And the time for deviating from the temperature control range is shortened to the minimum.

The invention relates to the technical field of alloy die-casting, and particularly discloses an alloy die-casting temperature field control method and system capable of reducing hot cracks, temperature gradients of different areas of a die are adjusted in real time according to flowing and solidification characteristics of alloy liquid, so that the surface temperature distribution of the die is matched with the solidification rate of the alloy liquid, and the alloy die-casting temperature field is controlled. Utilizing a machine learning algorithm to predict a risk area where hot cracks are generated on the basis of historical data and real-time monitoring data, and dynamically adjusting the flow velocity of a cooling system, the heating power of a die or die-casting process parameters according to a prediction result; through dynamic temperature gradient control, intelligent prediction and feedback control, a cooling strategy, a stress release mechanism and a real-time monitoring and optimizing process, thermal stress concentration can be effectively reduced, the possibility of generation of thermal cracks is reduced, the yield of castings is improved, the cooling time of the castings can be shortened through the cooling strategy, and therefore the production efficiency is improved, and the production cost is reduced. And reworking and scrapping of castings are reduced.

The invention provides a split type direct-current charging pile liquid cooling heat dissipation system, and belongs to the technical field of direct-current charging piles, a closed liquid cooling circulation system is constructed through equipment such as a liquid cooling circulation pump, a radiator assembly and a temperature sensor array, and active temperature control is realized by adopting a temperature pre-adjusting module as a core. The system firstly collects power and temperature data to establish a power heat effect function to describe a power-temperature relationship, and extracts temperature time sequence characteristics through a heat situation sensing model by adopting an improved time sequence convolutional network to configure a self-adaptive receptive field adjustment mechanism to capture different time scale change modes; and constructing a double-layer optimization framework in combination with a temperature control game model to solve a Nash equilibrium solution, and calculating an optimal cooling adjustment vector including advanced cooling time and cooling power parameters. And a change curve is generated through real-time monitoring and dynamic correction and is converted into a control instruction, the frequency converter is controlled to adjust the rotating speed of the circulating pump and the opening of the flow valve, and advanced adjustment before temperature change is achieved to eliminate response lag.

The invention belongs to the field of production control, and particularly discloses a control method of a thick-wall optical product precision injection molding hot runner system, which comprises the following steps of: acquiring mold geometric data of local thickness distribution in a mold-containing cavity along a melt flowing direction, calculating theoretical cooling time constants of each region by combining material thermophysical parameters, and calculating the cooling time constant of each region; establishing a thickness-cooling rate mapping relation model; predicting the time when the melt reaches each area and the effective cooling time according to an injection time sequence; solving a temperature compensation value of a heating area corresponding to the hot runner by taking the minimum final temperature variance when the key area is ejected as a target; and finally, dynamically applying a compensation value according to a time sequence before the melt arrives, and withdrawing / adjusting after region filling is completed or a pressure maintaining stage is entered. The invention can balance the temperature field of the mold cavity, reduce the refractive index gradient and shrinkage defect, improve the optical performance and yield of the product, and is suitable for precise injection molding of the thick-wall optical product.

The invention discloses a conformal cooling device for die-casting die temperature intelligent control and a regulation and control method. The conformal cooling device comprises a die body, an embedded conformal cooling runner network, a multi-mode temperature sensing array, a partition flow regulation and control valve group, a central cooperative controller and a cooling medium circulation supply unit. Through the combination of shape follow-up runner design and partition dynamic regulation and control, a cooling blind area is effectively eliminated, the surface temperature uniformity of a cavity is remarkably improved, and the cooling time of a hot spot area is shortened, so that the defects of shrinkage cavities, hot cracks and the like are inhibited, and the defect rate of castings is reduced. And under the cooperation of multi-mode sensing and intelligent control, the system response is accelerated, the energy consumption is reduced, the die-casting rhythm is shortened, and the synchronous optimization of the production efficiency and the energy utilization efficiency is realized.

According to the multi-path cooling control method for the non-adjustable flow of the cooling spray box after hot plate rolling, the mode that an annular rail is combined with a trolley is adopted, the trolley bears a sample through a sample bearing table to do annular motion, the annular rail is an oval rail comprising two parallel linear segments and two semicircular segments, and at least one cooling spray box is arranged along the linear segment rail; the cooling area can be infinitely lengthened at any workpiece speed; according to the cooling starting temperature, the water cooling speed, the cooling stopping temperature, the cooling stopping time between the cooling areas and the production line cooling spray box layout of the N cooling areas determined by the experiment, the experiment device is configured according to different spray box opening modes, the cooling experiment is carried out, and spray box opening mode parameters corresponding to the optimal cooling speed of the N cooling areas are obtained; carrying out cooling control after rolling on corresponding sample production; besides, the method is implemented under the condition basically consistent with the actual working condition of the production line, so that the product design output and the production line process control are more accurate and efficient, the product research and development speed can be effectively increased, the process control precision is improved, and the production line trial-manufacturing cost is reduced.

The invention belongs to the technical field of material processing, and discloses a magnesium alloy casting semi-solid injection molding method and application, and the method comprises the following steps: checking and adjusting a semi-solid injection machine, a casting mold and other equipment to be in a normal state, and placing magnesium alloy particles in a designated area of a hopper; putting a long nozzle of the semi-solid injection platform into the center of a mold sprue; setting the temperature of each section of a mold temperature controller, a charging barrel and a nozzle; preserving heat for a period of time after the temperature of the charging barrel reaches a set value, so that the temperature of materials in the charging barrel is uniform; setting the injection rate, the cooling time, the material return distance and the melt pressure of the semi-solid injection machine; and after a release agent is quantitatively sprayed to the mold, a semi-solid injection program is started, and a casting is obtained. The AS41B magnesium alloy particles with good heat resistance are adopted as the raw material, the semi-solid injection molding method is combined, a melting furnace is not needed, only heating to the semi-solid state is needed, the melt temperature is low, energy is saved, the service life of a mold is prolonged, protective gas is not needed, and the manufactured casting is good in mechanical property and high in heat resistance.

The invention relates to a pre-cooling regulation and control method and device of an air conditioner, electronic equipment and a storage medium. Comprising the steps that an air conditioner demand response is obtained, and the air conditioner demand response comprises an air conditioner starting moment; obtaining indoor and outdoor environment temperature change conditions based on the air conditioner demand response, and determining a PMV index range and a corresponding user comfortable temperature range according to a preset user thermal comfort model based on the indoor and outdoor environment temperature change conditions; according to the user comfort degree range, the target load reduction amount and the preset temperature adjustment amount, a target air conditioner pre-cooling regulation and control strategy is determined, and the target air conditioner pre-cooling regulation and control strategy comprises a pre-cooling target temperature and a pre-cooling time window; and according to the target air conditioner pre-cooling regulation and control strategy, before the air conditioner is started, the current set temperature of the air conditioner is adjusted in the pre-cooling time window to meet the pre-cooling target temperature. Therefore, the problem that in the prior art, due to the fact that large-scale infrastructure transformation or user behavior change is needed, certain difficulty and cost exist in implementation is solved.

The utility model discloses a laser lettering automatic feeding mechanism which comprises a bearing plate, and a conveying belt is installed on the inner side of the bearing plate. According to the laser engraving machine, an object to be subjected to laser engraving can be placed in a groove reserved in the bearing frame, then the bearing frame is placed on the conveying belt, the conveying belt can drive the bearing frame to move to the position under the laser engraving machine, and in the moving process, the bearing frame can be clamped into the inner side of the calipers; the air cylinder can drive the first motor and the bearing frame to move upwards, the first motor can drive the movable frame to rotate reversely, so that an object on the bottom face is exposed under the laser carving machine, the second motor can remove the movable frame from the position below the laser carving machine after two-face carving is completed, and the number of single-time laser carving is increased; and moreover, the time of single-time laser etching can be prolonged, the overall speed of an assembly line can be increased, the carved objects and the bearing frame can have enough cooling time, and the problem that hands are scalded when follow-up packaging operators take the objects is solved.

The invention provides a preparation method of deformed steel bar and the deformed steel bar prepared by the preparation method, and relates to the technical field of metallurgy. The preparation method comprises the following steps: 1) converter smelting: controlling the content of converter tapping elements; (2) continuous casting is conducted, specifically, molten steel smelted through a converter is poured into square billets; (3) rolling: heating the square billet, preserving heat, and rolling the square billet into a reinforcing steel bar; (4) after the rolling technology is conducted, through-water cooling treatment is conducted, the water pressure of through-water cooling ranges from 0.6 MPa to 0.88 MPa, and the cooling time ranges from 15 seconds to 30 seconds; and 5) performing high-frequency induction heating treatment on the deformed steel bar subjected to water cooling, and controlling the high-frequency induction frequency to be 150-250kHz and the heat preservation time to be 0.02-0.05 second. According to the method, the performance of the deformed steel bar is effectively improved, the production cost is reduced, closed-loop martensite can be effectively eliminated, and meanwhile, the oxidation resistance of the deformed steel bar is improved.

The invention discloses a stable transportation control method of an extrusion-injection molding integrated device, which comprises the following steps of: adjusting the pushing speed v2 of an injection molding plunger or an injection molding screw, recording the pushing time length delta t1 of the injection molding plunger or the injection molding screw, and the pressure maintaining and cooling time lengths delta thold and delta tcool of an injection molding assembly, and combining the sizes of an extrusion screw and an extrusion nozzle, so as to control the stable transportation of the extrusion-injection molding integrated device. And calculating the conditions met by the actual rotating speed of the extrusion screw, so that stable transportation of the melt can be realized. According to the invention, 'cutoff-accumulation 'oscillation of the melt can be effectively avoided, and stability and high efficiency of the melt transportation process are realized.

The present disclosure relates to a system and method for monitoring an injection molding process which may calculate injection time and packing time by attaching an acceleration sensor to an injection molding mold with bolts and measuring an amplitude change of a vibration signal of a mold during injection molding, detect mold closing and opening signals of the mold using a magnetic hall sensor, and monitor the injection molding process by measuring cycle time and cooling time, thereby simplifying installation and maintenance and reducing installation costs.

The present invention discloses a method for automatically controlling the feeding of steel plates with changed heating processes into a heat treatment furnace, belonging to the technical field of metallurgical automation. The method generates a production mark for process change by program judgment when the set furnace temperature of the last steel plate in the furnace is different from that of the steel plate to be loaded. Steel plates with the production mark for process change are not allowed to be automatically fed into the furnace. At the same time, according to the real-time position of the steel plate in the furnace in the heating zone, the function of automatically setting the temperature of each heating zone is realized, and the time required for the heat preservation zone of the heat treatment furnace to reach the set temperature is calculated based on the heating and cooling rates of the heat treatment furnace. By comparing the heating and cooling time with the time for the steel plate to be loaded to reach the heat preservation zone, the feeding time of the steel plate with the changed heating process is automatically judged, and the automatic control of the feeding of the steel plate with the changed heating process is realized. This method can effectively avoid the situations of slow production rhythm and energy waste caused by untimely manual furnace temperature setting, misjudgment of the manual loading time, delay, etc.

The invention discloses an injection molding process parameter initial setting method based on cavity pressure curve characteristic analysis, and relates to the field of injection molding process parameter setting. According to the method, pressure curve data in a mold cavity and a product appearance detection result are collected in real time in the mold testing process, key feature point information including a pressure building starting point, a pressure sudden change point, a V / P switching inflection point, a pressure maintaining platform interval and a cooling end point is recognized, and association rules of technological parameters and quality defects are established; and key parameters such as injection speed, injection pressure, dwell pressure, dwell time, cooling time and the like are sequentially adjusted, so that systematic setting of initial process conditions is realized. The method has the advantages of being high in data driving performance, clear in debugging process, high in interpretability and the like, the injection molding parameter adjusting efficiency can be effectively improved, dependence on historical sample data or complex modeling is avoided, the method is suitable for mold testing scenes of products of different structures and multiple types, the mold testing period is short, the trial and error cost is low, and good engineering practicability and application and popularization value are achieved.

The invention relates to the technical field of laser control, in particular to a laser grinding control method and system for a platform, which comprises the following steps: comparing a target depth value with an actual depth value, extracting a convex region and a concave region in combination with a surface image, calculating the volume, quantifying the space distribution and material quantity difference of various types of regions in a to-be-ground platform, and calculating the size of the to-be-ground platform. The precision loss caused by blind machining is avoided, the mutual matching degree between the convex area and the concave area is analyzed by integrating parameters such as the position relation and the volume matching degree between the areas, so that the feasibility and efficiency of transferring of the material between the convex area and the concave area during heating are quantitatively represented, and a grinding path is generated based on the mutual matching degree; heating and cooling time sequences are distributed in combination with thermal characteristics of materials and are converted into execution instructions of laser grinding equipment, so that the motion path of a laser beam is reasonable, energy output is precise, idle stroke and thermal deformation are reduced, thermal stress is controlled through periodic cooling, and meanwhile the grinding efficiency and the grinding effect of the platform are improved.

The invention discloses a method, a device, equipment and a medium for determining parameters of a heat affected zone of a circumferential weld of a pipeline, which are applied to the technical field of computers, and the method comprises the following steps: acquiring an experimental welding joint and a simulation forming part of a to-be-tested annular pipeline under the same working condition; determining the width of the heat affected zone at the center line of the cross section of each welding layer in the experiment according to the heat affected zone range of each welding layer in the experiment welding joint; determining the temperature range of the heat affected zone of the simulated forming part according to the width of the heat affected zone at the center line of the cross section of each welding layer in the experiment; determining the width of the heat affected zone according to the temperature range of the heat affected zone; and the peak temperature and the cooling time t8 / 5 are obtained according to the thermal cycle data in the width range of the heat affected zone. According to the method, simulation results based on different process parameters can be analyzed to obtain the change rule of the parameters of the heat affected zone under the different process parameters, and certain guidance is provided for further optimizing the process parameters and improving the welding quality.

The utility model discloses a water segregator capable of adjusting water flow, which relates to the technical field of hot stamping forming, and comprises a main body, a water inlet hole is inwards formed in one side of the main body, water outlet holes extending to the outside are formed in two sides of the water inlet hole, and cooling water flows in through the water inlet hole and flows out through the water outlet holes into each mold cavity. The interior of the main body is hollow to form the water diversion cavity; cooling water flows into the water diversion cavity through the water inlet hole and flows out through each group of water outlet holes; the adjusting mechanism is movably mounted at the water outlet hole; the adjusting mechanism is rotated to shield the water outlet hole to increase or decrease the water outlet hole so as to control the cooling water flow; according to the water segregator, the flow of the water outlet is uniform by controlling the flow of the water diversion outlet, so that the cooling speed of each mold cavity tends to be consistent, the stability of the size performance of parts is ensured, the uniform flow can ensure the uniform cooling time, the situation that the cooling time of the whole mold is prolonged due to the slow cooling speed of individual cavities is avoided, and the whole production takt is optimized.

The invention relates to the technical field of sliding bearing machining, and discloses sliding bearing inner and outer wall cutting equipment which comprises a base, a clamping assembly and a cutting assembly are arranged on the base, and feeding of the cutting assembly is controlled through a motor; the cutting assembly comprises a cutting seat, a switching motor and a cutting disc, the switching motor and the cutting disc are fixed to the cutting seat, and a cutter seat is movably connected into the cutting disc. The cutter seat can be controlled to slide integrally through the switching motor, only one cutter is used for cutting, and after a period of time, the cutter seat can be driven to rotate; the switching motor can adjust the cutter base to slide towards the other side, at the moment, the other cutter can abut against the bearing to replace the previous cutter for cutting, so that the cutting cutters are automatically and frequently switched, certain cooling time is provided for the cutters and a workpiece, and the situation that the surface temperature of the workpiece is too high, so that the surface is burnt, and the surface hardness and abrasion resistance are reduced can be effectively avoided. And due to the switching of the cutters, the abrasion consumption of the cutters can be greatly reduced.

To provide a cooling capacity evaluation device which can evaluate the cooling capacity of a coolant against grinding heat generated in a processing target part by grinding.SOLUTION: A cooling capacity evaluation device 3b, which evaluates a cooling capacity in a processing target part of a workpiece ground while supplying a cooling liquid by a grinder, comprises: a first estimation part 81 for estimating a transformation point temperature of the processing target part and a cooling time required for a tissue of the processing target part having reached the transformation point temperature to turn into a tissue providing a grinding burning; a second estimation part 82 for estimating temperature transition at a depth position of the grinding burning generated in the processing target part from the transformation point temperature, the cooling time, and a processing condition; a burning depth acquisition part 80 for acquiring the burning depth; a calorific power estimation part 85 for estimating a calorific power generated in the processing target part by grinding on the basis of the processing condition or grind energy required for grinding the processing target part; and a cooling volume estimation part 86 for estimating a cooling volume of the processing target part by the cooling liquid on the basis of the burning depth, the calorific power, and the temperature transition estimated by the second estimation part.SELECTED DRAWING: Figure 3

The invention discloses a furnace temperature uniformity online detection method and structure in the technical field of furnace temperature uniformity detection. The method comprises the following steps: S1, opening a temperature measurement hole preset in a furnace top; s2, a temperature measuring suspender provided with a thermocouple is inserted into the furnace chamber from top to bottom through a temperature measuring hole; s3, fixing the temperature measurement suspender, and enabling the thermocouples to be distributed at the center position and eight vertex angle positions of the cuboid in the furnace chamber; s4, sealing a gap between the temperature measuring suspender and the temperature measuring hole; s5, collecting uniform measurement data through a paperless recorder electrically connected with the thermocouple; and S6, drawing out the temperature measuring suspender and plugging the temperature measuring hole. According to the invention, the cooling time and the heating time of the furnace chamber are saved, the detection efficiency of the furnace temperature uniformity is improved, the in-furnace operation of workers is avoided, and the potential safety hazard is reduced.

The invention discloses a composite heating furnace which comprises a heating area, a constant temperature area and a cooling area, the heating area is provided with a feeding port and a first conveying mechanism, the constant temperature area is provided with a lifting mechanism for circularly lifting, and the cooling area is provided with a discharging port, a second conveying mechanism and a descending mechanism for circularly descending. The cooling area is located above the heating area, the cooling area and the heating area are adjacent to the front of the constant-temperature area, a carrier enters the heating area from the feeding port and is heated to the preset heating temperature, the bottom automatic door is opened, the first conveying mechanism conveys the carrier to the constant-temperature area, and the lifting mechanism grabs the carrier and lifts the carrier from the bottom to the top within the preset heat preservation time; and the top automatic door is opened, the translation mechanism transfers the carrier to the top of the cooling area, the descending mechanism drives the carrier to descend to the bottom within the preset cooling time, and then the carrier flows out from the discharging port through the second conveying mechanism. Through cooperation of the automatic door, the conveying mechanism and the chain conveying mechanism, seamless circulation of the carriers in heating, heat preservation and cooling areas is achieved, and linkage of multiple systems is achieved.

The invention discloses an electric power fitting forming device, and particularly relates to the technical field of metal casting. Through the stabilizing ring frame and the die-casting machine, a plurality of dies are arranged on the top of the stabilizing ring frame, an alternate assembly is arranged between the stabilizing ring frame and the dies, and the alternate assembly comprises a flowing frame fixedly connected to the bottom ends of the dies and a flowing ring rotationally connected to the interior of the stabilizing ring frame; through the arrangement of the alternate assembly and the dies, alternate operation of the dies between the stabilizing ring frame and the die-casting machine can be achieved, through the design, when one die is in a working state, the other die obtains sufficient cooling time, and therefore the die-casting machine can be cooled more stably, the die-casting efficiency is improved, and the die-casting efficiency is improved. And therefore, the shutdown time caused by die replacement is effectively shortened, the overall production time consumption of the die castings is reduced, and the die casting production efficiency of the device is remarkably improved.

The utility model discloses an arc-shaped injection mold for processing a plastic handrail of a treadmill, which relates to the technical field of injection molds and comprises a male mold in sliding connection with a female mold. The male die and the female die are respectively provided with a water cooling device; according to the utility model, after heat exchange, cooling liquid is gathered from the water inlet to the circulation seat and then enters the cold radiator shell, the water channels and the fins are regularly arranged in the cold radiator shell, so that the contact area between the cooling liquid and air is increased, and meanwhile, the fan accelerates air flow, so that heat in the cooling liquid is dissipated out; an efficient water cooling circulation system is matched with a water channel, fins and a fan in the cold row shell, heat in a mold can be quickly dissipated out, the cooling time of the plastic handrail is shortened, the injection molding period is shortened, and the production efficiency is improved. And the production efficiency is improved.

The utility model relates to a high-temperature industrial waste salt flaking device which comprises a first cooling roller, a second cooling roller, a secondary cooling roller, a first scraper, a second scraper and a third scraper, wherein the first cooling roller, the second cooling roller and the secondary cooling roller are rotationally arranged in a machine shell, and the first scraper, the second scraper and the third scraper are arranged in the machine shell and abut against the first cooling roller, the second cooling roller and the secondary cooling roller respectively. The second cooling roller and the first cooling roller are symmetrically arranged, a material passing gap is formed between the second cooling roller and the first cooling roller, and the material passing gap and the feeding port are oppositely arranged; the secondary cooling roller is positioned below the material passing gap and is used for cooling the high-temperature industrial waste salt falling from the material passing gap; the driving device is arranged on the machine shell and connected with the first cooling roller, the second cooling roller and the secondary cooling roller. The spiral conveyor is arranged at the bottom of the machine shell. According to the flaking device, the high-temperature industrial waste salt is secondarily cooled by arranging the secondary cooling roller, the cooling time is short, the efficiency is high, and the service life of the spiral conveyor is prolonged.

The application discloses a steel bar production line intelligent scheduling system based on artificial intelligence. In the application, the dynamic adaptation problem of multi-specification steel bar mixed production is solved through a virtual-real fusion decision mechanism. In view of the demand of alternate rolling of screw thread steel and bright round steel, the system analyzes order parameters in real time, dynamically optimizes the matching logic of roll gap adjustment sequence and cold bed stepping rhythm, and ensures that the steel bars with different surface characteristics reduce transition waste during process switching. Through equipment health degree prediction and material mechanics simulation, the peak value of the main drive of the rolling mill is automatically reduced and the cooling time is prolonged when high-strength steel bars are rolled, so that the roll peeling or internal cracks of the steel bars caused by stress mutation are avoided. For small batch orders, the system intelligently compresses the shutdown window of die and groove changing, pre-adjusts the process parameters by using the idle gap of the equipment, and significantly reduces the production capacity breakpoint caused by specification switching.

The utility model discloses a foamed plastic product forming device, which relates to the field of foamed plastic, and comprises a fixed frame and a movable frame, a concave mold is arranged in the fixed frame, a convex mold is connected in the movable frame in a sliding manner, the side end of the movable frame is connected with a fixed frame, and the fixed frame is connected with a movable mold. A telescopic air cylinder is connected into the fixing frame, and heating wires are arranged in the fixing frame and the male die. By arranging the heating wire, the heating wire is electrified to generate heat, so that the fixed frame and the convex mold can be preheated, the temperature balance between the mold and a product is favorably kept, the imbalance phenomenon caused by temperature difference is reduced, and the precision and the quality of the processed product are ensured; after a foamed plastic product is formed, heat absorption and cooling can be performed on the fixed frame and the convex mold, and heat in the mold can be quickly taken away, so that the cooling time is shortened, and the production efficiency is improved.

The application provides a cooling device of a cloth bag dust collector and belongs to the technical field of cloth bag dust collectors. The cooling device of the cloth bag dust collector comprises a base and a dust collector body, the dust collector body is fixedly connected to the base, the lower end of the dust collector is provided with an air inlet pipeline, the upper end of the dust collector body is provided with an air outlet pipeline, the base is fixedly connected with a cooling box, the cooling box is provided with a conveying channel, one side of the cooling box is fixedly connected with a gas feeding pipe, the gas feeding pipe is communicated with one end of the conveying channel, the other end of the conveying channel penetrates through the side wall of the cooling box and is communicated with the other end of the air inlet pipeline, and the dust collector body is provided with a sealing assembly capable of sealing the other end of the air inlet pipeline. The application has the advantages that the conveying channel is a multi-section U-shaped pipe, the dust-containing gas has a longer cooling time in the cooling box, and the cooling effect is better; and the cooling air of the cooling fan is mixed with the dust-containing gas through the fan blades, so that the temperature of the dust-containing gas is reduced.

The utility model discloses a traditional Chinese medicine decoction piece drying rack, and belongs to the technical field of traditional Chinese medicine processing. A traditional Chinese medicine decoction piece drying frame comprises a bottom plate with first walking wheels at the bottom and further comprises a material frame rotationally arranged on the bottom plate, multiple sets of material trays used for containing traditional Chinese medicine decoction pieces are arranged on the material frame, and a driving part used for driving the material frame to swing is arranged on the bottom plate. The material rack inclines by a certain angle; according to the utility model, the material rack is rotatably arranged on the bottom plate, so that during natural cooling, the material rack can be in an inclined state, and at the moment, the material trays are not distributed in an up-and-down alignment manner but spread towards one side in sequence, so that on one hand, air circulation is facilitated, the cooling time is shortened, and decoction pieces are uniformly cooled; on the other hand, a worker can conveniently check the state of the decoction pieces on the material disc, and the using effect is improved.

The invention provides a method and device for predicting the crack risk in the preparation process of a nuclear power steel material, and the method comprises the steps: building and training a high-precision crack risk prediction model through the quantification of the interaction of the die casting temperature, the cooling time, the austenite grain size, the precipitate size and the ferrite film thickness; through the trained crack risk prediction model, the crack risk coefficient of the to-be-tested nuclear power steel material can be predicted based on the preparation process parameters and the structural characteristic parameters of the to-be-tested nuclear power steel material, and the process adjustment necessity assessment is carried out according to the crack risk coefficient of the to-be-tested nuclear power steel material. Crack defects are pre-judged in advance, die casting process parameters are optimized, and ingot casting quality is improved.

The present invention discloses a method for preparing a high-chromium cast iron arc liner, belonging to the field of arc liner processing and preparation. The method comprises the following steps: S1: raw material smelting; S2: composite modification treatment, in which rare earth magnesium alloy, ferrovanadium, and ferroboron are added to the bottom of a molten iron ladle, the molten iron is then poured into the ladle for casting, and the casting is removed after cooling; S3: thermal correction treatment plus composite quenching treatment, in which the casting is heated and placed in a correction processing mold for correction treatment while cooling water is passed through the correction processing mold. After cooling for a period of time, the casting is removed, placed in an oil pool for oil cooling, and then air-cooled to room temperature; S4: tempering treatment, in which the casting is placed in a heating furnace, heated to 280-300°C, kept at this temperature for 3-4 hours, removed from the furnace, and air-cooled to room temperature; S5: inspection and storage, thereby obtaining the desired arc liner casting. The present invention can achieve thermal correction and rapid cooling of the arc liner while reducing cooling time and improving the performance of the arc liner.