1094results about "Charge treatment type" patented technology

The invention provides a performance optimization and regulation method for a high-temperature sintering furnace, and belongs to the technical field of intelligent regulation, and the performance optimization and regulation method comprises the following steps: arranging sensors in each heating area of the high-temperature sintering furnace, and monitoring the heating areas in real time; constructing a heating area operation state database, comparing the collected real-time data with a preset sintering process parameter range, and analyzing to obtain a performance analysis set of each heating area; establishing a three-dimensional heat conduction model, simulating heat flow distribution of each heating area under different heating powers and temperature settings, determining a thermal coupling effect of each heating area in different stages, and determining a heat transfer coefficient between adjacent heating areas; and an initial strategy of the high-temperature sintering furnace is determined, the initial strategy is optimized based on the auxiliary parameters of all the heating areas, and all the heating areas of the high-temperature sintering furnace are regulated and controlled according to the optimization strategy. The problems of inaccurate temperature control, single parameter analysis, insufficient thermal coupling effect processing and the like in the traditional regulation and control technology are effectively solved.

The invention belongs to the technical field of cement production, and particularly discloses a cement decomposing furnace temperature field simulation method based on digital twinning, and the method comprises the steps: firstly, carrying out the preliminary selection of input parameters according to a cement clinker sintering technology, and then building a time sequence data set from a decomposing furnace; secondly, data preprocessing is carried out through mean filtering and homogenization, and a time sequence data set is divided into a training set, a verification set and a test set; establishing a deep learning model for training to obtain a digital twin virtual model layer, and establishing a decomposition furnace geometric model for training to obtain a prediction model; and carrying out anomaly detection and prediction simulation on the input decomposition furnace variables by using the two trained models. According to the method, the decomposition furnace digital twinborn model is established through the decomposition furnace mechanism model and the data driving model, so that the method has the advantages of prediction capability, operation optimization, decision support and the like, temperature distribution and dynamic change in the decomposition furnace can be reflected in real time, and abnormal conditions in operation can be found.

The invention is suitable for the technical field of advanced powder metallurgy and ceramic material sintering, and provides an assembly line type flash sintering system and a sintering method. The system comprises a powder loading and pre-pressing module, a first automatic graphite paper pressing, paving and replacing module, a sintering module, a demolding and sampling module and a second automatic graphite paper pressing, paving and replacing module which are sequentially arranged in the material flowing direction, all the modules are connected through the vacuum switching module to form a continuous vacuum environment; the system further comprises a conveying system which is used for driving the sintering units bearing materials to sequentially flow among the modules. The continuous flash sintering device is suitable for carrying out efficient and full-automatic continuous flash sintering treatment on powder materials in a vacuum or protective atmosphere environment, the platform overturning risk can be fundamentally avoided, and the stability and safety of the sintering process are ensured.

The invention belongs to the technical field of circuit board metal smelting control, and discloses a circuit board metal smelting energy-saving parameter self-adaptive control system and method. The method comprises the following steps: carrying out real-time monitoring and fluctuation analysis on heating circuit voltage collected in unit time in the metal smelting process of the circuit board to obtain a voltage fluctuation level; processing the smelting state data acquired in unit time in the metal smelting process of the circuit board to obtain a smelting state characteristic data set, and identifying a current smelting stage; when the voltage fluctuation grade is greater than or equal to a preset voltage fluctuation grade threshold value, generating an energy-saving strategy control identifier in combination with the current smelting stage and the predicted smelting stage of the next unit time; dynamically adjusting energy-saving control parameters based on the voltage fluctuation grade, the smelting state characteristic data set and the energy-saving strategy control identifier; the intelligent self-adaptive control level of the circuit board metal smelting energy-saving parameters is enhanced, and energy-saving control is changed from passive execution to look-ahead response.

A combustor component is disclosed comprising a combustion chamber, which comprises an oxidant inlet configured to receive a gas flow of an oxidant, a fuel inlet configured to receive a gas flow of a fuel into the combustion chamber, and a gases outlet configured to allow passage of a flow of exhaust gases from the combustion chamber. The combustor component is configured to facilitate separation of the gas flows of the oxidant and the fuel entering the combustion chamber prior to combustion of the fuel with the oxidant. A combustor assembly comprising a plurality of combustor components for staged combustion of a fuel with an oxidant, and related systems and methods for control and use of the combustor assembly, including in calcination processes, are also disclosed. A pyrolysis component, a pyrolysis assembly comprising a plurality of pyrolysis components, and related systems and methods using the pyrolysis component are also disclosed.

The invention relates to the technical field of zirconia ceramic sintering, and discloses a zirconia ceramic microwave single-die-cavity rapid sintering system and an intelligent temperature control method.The system comprises a high-temperature-resistant metal cavity, a microwave generation unit, a temperature detection and control unit, a coil base assembly and an auxiliary structure, and centralized control is achieved through an intelligent touch control computer. A microwave single-mode resonance mode is adopted, a silicon carbide wave absorbing layer is used for enhancing microwave absorption, materials are evenly heated from inside to outside, an intelligent temperature control method is used for monitoring the temperature in real time based on a short-wave infrared thermometer, a PI D control algorithm is combined, the power of a magnetron is dynamically adjusted through an adjustable power source, the temperature control precision reaches + / -2 DEG C, and the temperature control precision reaches + / -2 DEG C; the problems of non-uniform temperature, high energy consumption, high rejection rate, long sintering time and the like in a traditional zirconia ceramic sintering process are effectively solved, the production efficiency can be greatly improved, the cost is reduced, the product quality is improved, the equipment also supports multiple process modes, and diversified production requirements are met.

The invention relates to the technical field of aluminum melting furnaces, in particular to an aluminum ingot melting device which comprises a gas system and a melting system. The fuel gas system comprises a first gas cylinder, and compressed natural gas is contained in the first gas cylinder. The melting system comprises a melting furnace, the melting furnace is provided with a melting space, and a plurality of first combustion ports are formed in the side wall, corresponding to the melting space, of the melting furnace; when the aluminum ingot melting device works, an aluminum ingot in the melting space is rapidly heated to a first temperature, the aluminum ingot is in an unmelted state when the first temperature is reached, and after the first temperature is reached, unburnt compressed natural gas is directly blown to the aluminum ingot through the first burning port, so that the aluminum ingot is cooled and cracked or an oxide layer is cracked; after cooling for a preset time, heating the aluminum ingot with the cracked surface until the aluminum ingot is molten; according to the method, the aluminum ingot is rapidly heated to the non-molten state, then through rapid cooling and thermal expansion and cold contraction, an oxide layer is cracked or broken, the aluminum ingot is cracked and even broken, and the heating effect is improved through reduction of a subsequent heating oxide film or increase of the contact area.

The invention is suitable for the technical field of powder metallurgy and advanced ceramic material sintering equipment, and provides an integrated flash sintering device for vacuum and a sintering method. The device comprises a power supply module, a high vacuum module, a first servo hydraulic machine, a second servo hydraulic machine, a third servo hydraulic machine, a mold rotation switching module, a vacuum feeding module, a green body pressing module, a demolding and mold cleaning module and a mold transfer module. According to the invention, an integrated gear tray design is adopted to integrate the functions of die installation, graphite paper treatment and green body pressing, and online synchronous cleaning of an electrode and a die is realized through die fixation and a cleaning brush arranged in a cleaning drum; therefore, full-automatic, high-efficiency and high-stability continuous production of flash sintering from powder filling to finished product collection is realized.

The invention belongs to the technical field of sintering pallet fat liquoring, and particularly relates to a sintering pallet fat liquoring machine and a control method and a control system thereof, the sintering pallet fat liquoring machine comprises a follow-up car which is used for running in parallel with a sintering pallet and can run in a reciprocating mode, and an oil injection module is installed on the follow-up car; the control method comprises the following steps: S1, the positioning rudder is standby; s2, wheels of the sintering pallet are captured; s3, the follow-up car follows; s4, the oil injection gun is operated; s5, oil injection; s6, the oil injection gun is separated; and S7, resetting the positioning rudder. According to the automatic grease adding device, automatic grease adding and lubrication of the wheels of the sintering pallet in time under the non-stop state are achieved, the sintering efficiency is improved, manpower is liberated, normal operation of the sintering pallet is guaranteed, and the automatic grease adding device has very important significance for solving the grease adding problem of an existing pallet.

The invention relates to the technical field of sintering processing, in particular to an automatic discharging device of a silicon carbide product sintering furnace. Comprising a sintering furnace, a bearing table is installed in the sintering furnace, an inverted-T-shaped tray used for containing silicon carbide products is arranged at the upper end of the bearing table, a moving trolley is arranged on the right side of the sintering furnace, and a discharging unit is arranged at the upper end of the moving trolley. The fixing assembly integrally forms a plurality of triangular structures, the stability is high, the fixing assembly can move into the sintering furnace to abut against and limit the sintered silicon carbide product front and back, the pressing plate can be pressed at the upper end of the silicon carbide product, it is ensured that the silicon carbide product is stably placed at the upper end of the inverted-T-shaped tray, and the stability is high. Therefore, the relative stability between the silicon carbide product and the inverted-T-shaped tray is improved, the silicon carbide product is effectively prevented from shifting or toppling over in the discharging process, and the discharging reliability is improved.

The invention discloses a device and a method for preparing silicon nitride powder with high sintering activity by a self-propagating method. The method comprises the following steps: mixing silicon powder and silicon nitride powder to obtain a mixed raw material; putting a porous plate into a crucible, scattering magnesium powder on the porous plate, and stacking the mixed raw material on the magnesium powder; sealing and vacuumizing the crucible, then filling nitrogen, repeating the operation for a plurality of times, and keeping the nitrogen atmosphere and pressure in the crucible; igniting the magnesium powder in the crucible, and starting a self-propagating combustion reaction; and cooling the crucible to obtain the silicon nitride powder with high sintering activity. The device comprises an ignition system, a self-propagating autoclave and a temperature detection module, one end of the ignition system and one end of the temperature detection module extend into the self-propagating high-pressure kettle. According to the method and the device, a continuous ventilation low-pressure self-propagating method is adopted, sufficient nitrogen is ensured to participate in the reaction, the raw materials are completely reacted, the yield and the purity of the product are ensured, the alpha-phase content of the product is relatively high, and the self-propagating device is simple in structure and convenient to operate.

The invention provides an aluminum melting furnace door flue gas automatic control dust removal air volume system, and relates to the field of aluminum melting furnace flue gas purification treatment, and the system comprises a data acquisition and processing unit which is used for acquiring flue gas state data and furnace door state images at an aluminum melting furnace door, and identifying the current flue gas state grade and furnace door opening and closing degree of the aluminum melting furnace; determining a target concentration control threshold value; the air volume distribution unit is used for generating the total air volume adjustment amount by using an increment inversion and gain scheduling algorithm based on the flue gas state grade and the target concentration control threshold value, and performing air volume distribution processing on the multiple execution mechanisms by using a redistribution scaling pseudo-inverse method; and the air volume control unit is used for generating control instructions of the multiple execution mechanisms based on the air volume distribution result, sequentially transmitting the control instructions to all the execution mechanisms and executing air volume control. According to the invention, through combination of deep learning network identification and dynamic adjustment, real-time matching of the dedusting air volume and the flue gas volume is realized, and the operation cost of an enterprise is remarkably reduced.

The invention discloses an energy-saving uniform-temperature open type sintering furnace applied to production of a DCB copper-clad ceramic substrate, and belongs to the technical field of sintering furnaces, the energy-saving uniform-temperature open type sintering furnace comprises a sintering furnace body, a feeding table and a discharging table are arranged on the two sides of the sintering furnace body respectively, and a sintering hearth is formed in the sintering furnace body. By arranging the holding port, the heat dissipation port and the four-channel heat exchanger, a copper-clad ceramic substrate just entering the sintering furnace body can be preheated, so that energy consumption caused by preheating is reduced, by arranging the heating pipe, high-temperature gas can be further used for driving the waste heat driving mechanism, and by arranging the preheating detection mechanism, the heat dissipation efficiency of the sintering furnace is improved. By arranging the waste heat driving mechanism, air pressure can be provided for the dust removal port, so that the dust removal port has a dust removal function on the copper-clad ceramic substrate, the copper-clad ceramic substrate can be positioned by the sliding plate and the connecting clamping plate on the reciprocating screw, and the copper-clad ceramic substrate is kept in the middle on the material conveying belt, so that the heating efficiency is improved.

The invention discloses a continuous roasting device for isostatic pressing graphite for semiconductors, relates to the field of graphite roasting, and solves the problem that an existing graphite roasting device is difficult to supplement materials. The continuous roasting device comprises a device shell and a feeding valve fixedly installed at the top of the device shell, and a positioning block is fixedly installed on the inner side of the device shell; the top and the bottom of the positioning block are each provided with three roasting cylinders which are distributed at equal intervals. The top of the device shell is fixedly provided with two combustion nozzles which are symmetrically distributed. The roasting mechanism is used for continuously roasting and supplementing the graphite blanks in the roasting barrel, and the roasting mechanism is mounted on the inner side of the device shell; by means of the roasting mechanism, graphite blanks can be loaded into the roasting cylinders through the feeding valves, six graphite blanks are loaded into the six roasting cylinders in sequence, filling materials can be supplemented into the roasting cylinders in the moving process of the roasting cylinders, and therefore the effects of continuous roasting and convenient material supplementing are achieved.

The invention relates to the technical field of silicon carbide ceramics, in particular to a preparation method and a sintering device of a large-sized pressureless sintered silicon carbide ceramic tubing, and the preparation method comprises the following steps: uniformly mixing beta-type silicon carbide whiskers, graphite powder, boron carbide, a sintering aid, a dispersing agent, a binder and silicon carbide micro powder, then adding water, and stirring to prepare pug with the water content of 32-38%; pugging is conducted till pug with the water content being 8%-11% is obtained, and then the pug obtained after pugging is sealed and aged at the room temperature; carrying out extrusion molding on the aged pug through a vacuum extruder to obtain a ceramic tube blank; the ceramic blank pipe is fed into drying equipment to be dried; and sintering the ceramic blank tube in a nitrogen atmosphere at 1900-2150 DEG C to obtain the silicon carbide ceramic tube. By adding the beta-type silicon carbide whiskers, the silicon carbide micro powder, the sintering aid and other substances, the toughness and strength of the silicon carbide ceramic pipe can be enhanced, the wall thickness of the pipe can be reduced on the premise of keeping the same strength level, thermal resistance can be reduced, and the heat exchange efficiency of a heat exchanger can be improved.

The invention belongs to the field of material calcination, discloses a powder material calcination method and device, and aims at prolonging the reaction time of a powder material and enabling the quality of a finished product of the powder material to meet the required requirement under the condition that an existing suspension kiln is not transformed. The calcining method comprises the following steps: step 1, conveying a raw material of a powder material into a suspension calcining furnace for calcining; raising the temperature of the calcined powder material to the tempering temperature of the powder material in the reactor; step 2, opening a feeding valve positioned at the upstream of the reactor, and closing a discharging valve positioned at the downstream of the reactor; conveying the calcined powder material into a reactor; 3, when the powder materials are stacked in the reactor to reach the preset material level for the first time, a discharging valve is opened, the feeding speed of a feeding valve and the discharging speed of the discharging valve are adjusted, and the actual standing time of the powder materials in the reactor is made to be equal to the preset hardening and tempering time; and discharging the powder material in the reactor from a discharge valve to obtain a powder material finished product until the calcination is finished.

The invention discloses a full-hydrogen bell-type annealing furnace flue gas waste heat recycling system, which belongs to the field of flue gas waste heat recovery and comprises a workbench. According to the scheme, the filter screen is arranged, impurities in smoke can be blocked and filtered by the filter screen in the process that the smoke passes through the communicating pipe, meanwhile, the smoke impacts an impeller in the process that the smoke passes through the communicating pipe and drives the impeller to rotate, a rotating rod is driven to rotate in the rotating process of the impeller, and then an impacting rod is driven to rotate in the rotating process of the rotating rod; bristles are driven to rotate in the rotating process of an impact rod, then the bristles gradually make contact with impurities on the surface of a filter screen in the rotating process and drive the impurities, and due to the fact that the impurities rotate around a rotating rod, the impurities gradually move towards a first collecting tank under the common action of centrifugal force and gravity; and the flue gas falls into the collecting box through the first collecting tank and the second collecting tank, so that the filter screen is effectively prevented from being blocked to influence the normal passing of the flue gas through the filter screen, and the effect of ensuring the normal passing of the flue gas through the filter screen is achieved.

The invention discloses a metallurgical container tipping mechanism, and relates to the technical field of metallurgy, the metallurgical container tipping mechanism comprises a metallurgical cylinder and a supporting plate, the outer wall of the metallurgical cylinder is rotatably connected with a connecting disc, the side walls of the two ends of the connecting disc are fixedly connected with side plates, and the side walls of the two side plates are fixedly connected with the same rotating disc. According to the device, the mounting rod can be moved into the metallurgy barrel through the residue preventing assembly, under cooperation of a first air gun, a second air gun and a third air gun, residual metal solution at the concave position of the inner wall of the metallurgy barrel is blown to the bottom of the poured metallurgy barrel, and finally the residual metal solution is discharged from a pouring opening of the metallurgy barrel; and it is ensured that no metal solution remains in the metallurgical cylinder, the situation that when other metal materials are smelted through the metallurgical container subsequently, the residual metal solution is mixed with other metal solutions, and the purity of the metallurgical container is affected when the metal materials are smelted is avoided, and the reliability and the using effect of the device when the metallurgical cylinder is overturned are greatly improved.

The invention relates to the technical field of copper smelting slag recovery and treatment, in particular to a copper smelting slag recovery and treatment device and process. The upper end and the lower end of the material chamber are fixedly connected to the inner wall of the furnace body, the material chamber is used as a reaction container, and a reaction raw material is granular copper smelting slag; the heating piece is arranged between the furnace body and the material chamber and is used for providing heat required by reaction; the gas inlet pipe is used for introducing hydrogen into the material chamber; the exhaust pipe is used for exhausting tail gas from the material chamber; the dispersing component is used for dispersing the hydrogen entering the material chamber; the turbulent flow part is used for changing the flowing direction of hydrogen in the material chamber; and the retention part is used for slowing down the rising speed of the tail gas. According to the copper smelting slag recovery treatment device and the treatment process, the spherical particles of the copper smelting slag are reduced through hydrogen, the cleanliness of the reacted product is high, the reaction product is easy to treat, and energy consumption and pollution to the environment are reduced.

The invention discloses a soft magnetic ferrite core processing device, and relates to the technical field of magnet processing. The device comprises a supporting frame, a sintering furnace is fixedly installed at the top end of the supporting frame, the sintering furnace is divided into three areas from left to right, namely a pre-sintering shaping area, a high-temperature sintering area and a cooling area, installation clamping plates are fixedly installed on the adjacent sides of the top of the supporting frame, and a connecting plate is fixedly installed between the middles of the installation clamping plates. In the high-temperature sintering and cooling process, a soft magnetic ferrite core can be turned over, air flowing is accelerated, it is guaranteed that the soft magnetic ferrite core is evenly heated during sintering, the product quality is improved, meanwhile, even iron oxidation during sintering of the soft magnetic ferrite core and even heat dissipation during cooling are facilitated, and the service life of the soft magnetic ferrite core is prolonged. According to the magnetic core sintering device, the requirement for sufficient iron oxidation and cooling is met, the machining efficiency is improved, the soft magnetic ferrite cores are convenient to place and collect, meanwhile, redundant rolling during sintering of the soft magnetic ferrite cores is avoided, and normal sintering is facilitated.

The invention relates to the technical field of calcining furnaces, in particular to a large environment-friendly calcining furnace which comprises a support, a calcining furnace body is installed on the support, an exhaust pipe is installed on the calcining furnace body and exhausts waste gas generated by the calcining furnace body, clear water is contained in a heat exchange box, and a coiled pipe rotates to conduct heat exchange and heating on the clear water in the heat exchange box; a waste gas treatment box is mounted on the second mounting frame, a neutralizing solution is contained in the waste gas treatment box, waste gas subjected to heat exchange is conveyed into the neutralizing solution in the waste gas treatment box, an atomization mechanism is mounted in the waste gas treatment box, and the atomization mechanism can atomize and spray out the neutralizing solution to treat the waste gas. Tail gas heat is recovered through rotation of the coiled pipe, the treatment efficiency is improved, the occupied area is reduced through integrated design, blockage is avoided through a self-cleaning filter screen, the tail gas purification effect is improved through the atomization purification technology, and the multiple beneficial effects of heat recovery, efficient treatment, integration, self-cleaning and environmental protection are achieved.

The invention relates to the technical field of rotary kiln calcining equipment, in particular to a rotary kiln calcining method based on annular air curtain sealing, which comprises the following steps: S1, dynamic gap three-dimensional modeling: collecting a radial gap value between a kiln body flange end face and a static housing in real time through radial distance sensor groups uniformly distributed on the circumference; synchronously obtaining the axial displacement of the kiln body; constructing a dynamic gap three-dimensional topology model based on the angle distribution data of the radial gap value and the axial play vector; s2, generating a double-layer vortex air curtain; s3, dynamically regulating and controlling air curtain parameters; and S4, sealing efficiency closed-loop control is conducted, specifically, the escape dust concentration of the outer wall of the static housing is detected, and when the concentration exceeds the standard, the compensation coefficient of the reference flow velocity is increased according to the gradient, and the step S2 is executed again. The sealing effect of the rotary kiln is greatly improved by adopting a double-layer vortex air curtain sealing technology, dynamic gap modeling, air curtain parameter dynamic regulation and control and sealing efficiency closed-loop control.

The invention discloses a coal gangue distributed homogeneous high-temperature activation calcination method and system, and relates to the technical field of resources and environments, the system comprises a coal gangue powder preparation and feeding system, a coal gangue powder distributed homogeneous high-temperature activation calcination system, a high-temperature powder cooling system, a finished product collection system and a flue gas purification system; the coal gangue powder distributed homogeneous high-temperature activation calcining system comprises a primary cyclone preheating system and a distributed homogeneous high-temperature activation furnace; the air inlet end of the primary cyclone preheating system is communicated with the coal gangue powder preparing and feeding system, the primary cyclone preheating system is communicated with the homogeneous high-temperature activation furnace, materials in the distributed homogeneous high-temperature activation furnace are separated by the gas-solid cyclone separator and then are divided into two parts by the distributor, one part enters the high-temperature powder cooling system, and the other part enters the high-temperature powder cooling system; and the other part returns to the distributed homogeneous high-temperature activation furnace for circulation. According to the method, large-scale treatment of high-temperature activation and calcination of the coal gangue is realized, and the uniformity and controllability of product quality are remarkably improved.

The calcining furnace comprises a machine table and a furnace body, a flue gas purification mechanism is installed at the top of the machine table, a top plate is installed at the top of the flue gas purification mechanism, an oxygen supply device and a smashing and stirring mechanism are arranged at the top of the top plate, a calcining rack is arranged at one end of the furnace body in a sealing fit mode, and the calcining rack is arranged at the other end of the furnace body. An L-shaped bracket is mounted at the bottom of one end of the machine table, and a flue gas purification mechanism is arranged in the machine table; through the smashing and stirring mechanism and the smashing type calcining structure of the calcining rack in the furnace body, materials needing to be calcined and processed are uniformly placed in the discharging groove to be processed, a material collecting structure of the discharging groove is conveniently utilized, unfolding and sealing are convenient, the processed materials are conveniently and uniformly collected and crushed, and the processing efficiency is improved. The limitation and inconvenience that materials are scattered and are difficult to take out are abandoned, rapid cooling and discharging are facilitated under the condition that the structure is actively pulled out from the interior of the furnace body, and the working efficiency of antimony trioxide processing and production is greatly improved.

The invention provides a sintering kiln, and belongs to the technical field of lithium iron phosphate powder production.The kiln comprises a roller way, a first furnace body and a second furnace body are arranged on the roller way, and guide parts are arranged on the two sides of the roller way; the stop lever is arranged on the guide part and is used for stopping the saggar; the stirring mechanism is arranged between the first furnace body and the second furnace body and comprises a mounting plate which is erected above the roller way and moves in the length direction of the roller way, a stirring rod is vertically and slidably arranged on the mounting plate in a penetrating manner, a stirring paddle is arranged at the lower end part of the stirring rod, a limiting part is arranged on the stirring rod, and the limiting part is located above the stirring paddle; the bottom of the dustproof cover is open, a cover body is formed on the outer edge of the bottom of the dustproof cover, the stirring rod slidably penetrates through the top of the dustproof cover, and the limiting part is located below the top of the dustproof cover; and the driving part is arranged on the mounting plate and is used for driving the stirring rod to move along the axial direction and rotate around the axial direction. The sintering kiln can quickly remove moisture in the lithium iron phosphate powder, improves the overall sintering efficiency, and has low energy consumption cost at the same time.

The invention is applicable to the field of advanced manufacturing of powder materials, and provides flash sintering equipment for high current and high pressure, which comprises a power supply module, a pressure generation module, a support frame, a high vacuum module, a jacking module, a sintering unit and a conveying module. The sintering unit is provided with a sintering platform, a floating die module and a floating lower punch module and is guided through an upper guide column and a lower guide column. The jacking module jacks the lower electrode through a lead screw to push the floating lower punch module and the floating die module to move upwards along a guide column to be separated from the platform, and floating butt joint is achieved; the pressure generation module drives the upper punch to press downwards through the upper electrode and applies pressure to the sample, and the power supply module applies sintering current at the same time. Through the design of the floating module in non-rigid connection, the pressing force is prevented from being transmitted to the sintering platform, the equipment is prevented from overturning, and the stability of the sintering process is improved; and the whole station switching of the sintering unit is realized in combination with the conveying module, so that the continuous automatic production capacity of the equipment is improved.

The invention relates to the field of sintering furnaces, and discloses an atmosphere box type glue discharging sintering furnace with a rapid cooling function, the atmosphere box type glue discharging sintering furnace comprises a furnace body, a heating mechanism and an air supply mechanism, the heating mechanism and the air supply mechanism are arranged in the furnace body, the heating mechanism is arranged at the top of a furnace cavity, and the output end of the air supply mechanism is connected with the inner side face of the furnace body; the air supply mechanism supplies air from left to right or from right to left after the heating mechanism is started for a preset time, hot air circulation is formed in the furnace cavity, a rotatable furnace door is arranged on the front end face of the furnace body, a ventilation hole plate is arranged on the inner wall of the furnace door, and a heat preservation layer is arranged behind the ventilation hole plate. By improving an existing hot air circulating system, the problem that the subsequent heat dissipation efficiency is low due to the design of a heat preservation layer is solved; by setting the time sequence and direction of an air supply path, circulation and discharge of hot air are achieved, furnace temperature is evenly distributed in the heating stage, residual heat is rapidly taken away after heating is stopped, and the overall heat dissipation efficiency is improved.

The present invention relates to the technical field of sintering production process control, and discloses an optimized control method and system for stabilizing the sintering end cross-section, which acquires the sintering end distances of each interval of the current cross-section and the strokes of each pressure plate above the round roller feeder; when the sintering end distances of some intervals are less than the preset sintering end distance, it is judged whether the stroke of the pressure plate in the current interval reaches the upper limit, and the consistency of the sintering end position and the end cross-section is adjusted by coordinately controlling the stroke of the pressure plate and the valve opening of the main exhaust fan, so that the sintering end is controlled at the target position, and the stroke of the pressure plate in each interval is controlled to change the thickness of the material layer, and the sintering time from top to bottom of the material layer is adjusted, which is a longitudinal adjustment method. Adjusting the valve opening of the main exhaust fan can change the end position state of the entire cross-section of the sintering pallet at the same time, which is a transverse adjustment method. Considering from two dimensions of longitudinal and transverse, the coordinated optimization adjustment of the sintering end target position and cross-section consistency is realized.

The dust hood comprises a cover body, a lifting device and a heat insulation part, the lifting device and the heat insulation part are arranged on the cover body, a suction cavity and a suction opening are formed in the cover body, the suction opening is formed in the suction cavity and used for being connected with a suction fan, the lifting device comprises a driver and a driving rod, and the driver drives the driving rod to reciprocate. The heat insulation piece is connected to the driving rod and comprises a top plate and a side plate, and the side plate is connected to the lower end of the top plate; when the dust removal cover is arranged on a furnace body of the medium-frequency induction melting furnace in a covering mode, the driving rod drives the heat insulation piece to abut against the end face of a furnace opening of the medium-frequency induction melting furnace, and the periphery of the cover body is arranged above the end face of the furnace opening of the medium-frequency induction melting furnace in a spaced mode. Therefore, heat of the smelting furnace and external low-temperature air can be isolated through the heat insulation piece, the effect of sucking smoke can be achieved, the heat of the smelting furnace can be prevented from being taken away by the low-temperature air, the heat loss of the smelting furnace is greatly reduced, and the smelting cost is reduced.

The invention provides a preparation method of a boron nitride setter plate, and belongs to the technical field of boron nitride setter plates. The preparation method comprises the steps of material mixing, cold isostatic pressing forming and vacuum sintering. The material mixing step comprises the following steps: putting hexagonal boron nitride powder with the particle size of 100-200nm, hexagonal boron nitride powder with the particle size of 1.0-3.0 mu m, hexagonal boron nitride powder with the particle size of 4.0-10.0 mu m, ammonium bicarbonate, phenolic resin and sodium tripolyphosphate into a ball-milling device, adding absolute ethyl alcohol for ball-milling treatment, then adding a secondary compound for continuous ball-milling for 23-28min, and after ball-milling is finished, cooling to room temperature to obtain the boron nitride composite material with the particle size of 100-200nm, the particle size of 1.0-3.0 mu m, the particle size of 4.0-10.0 mu m and the particle size of 1.0-3.0 mu m and the particle size of 4.0-10.0 mu m. Drying at 87-92 DEG C to obtain dry powder; the boron nitride setter plate prepared by adopting the method disclosed by the invention is high in mechanical strength and strong in toughness, and can still keep relatively high mechanical strength after repeated cold and heat cycles.