37results about How to "Will not pass" patented technology

The invention discloses an improved SM4 parallel encryption and decryption communication method based on a GPU (Graphics Processing Unit). The encryption and decryption method comprises the following steps: using an AES (Advanced Encryption Standard)-128 key expansion algorithm to generate an expanded subkey needed by an SM4 encryption algorithm; improving a round function in the SM4 encryption algorithm; and using the parallel computing power of the GPU, improving the SM4 encryption algorithm into a form of parallel encryption. By adopting the encryption and decryption communication method of the invention, the security and the speed of implementation can be effectively improved, real-time and parallel encryption can be performed on data, and the encryption speed can be improved, so that normal transmission of data flow can be guaranteed and the processing delay can be reduced.

The invention discloses water-based environment-friendly porcelain glaze-like plastic coating and a preparation method thereof. The water-based environment-friendly porcelain glaze-like plastic coating adopts a formula comprising the following materials by mass: 20 to 40 percent of a water-based acrylic emulsion, 10 to 20 percent of water-based silica sol, 35 to 50 percent of water-based inorganic silicon dioxide nanodispersion, 0.1 to 0.3 percent of a wetting dispersant, 1 to 5 percent of silane, 0.1 to 0.5 percent of an amine neutralizing agent, 5 to 10 percent of lead-free pigment, 0.5 to 2.5 percent of a film-forming additive, and 5 to 25 percent of deionized water. The water-based environment-friendly porcelain glaze-like plastic coating can be coated on the surfaces of various materials in the form of porcelain glaze, and can be applied on the surfaces of the materials of various shapes through roller-applied coating, shower coating, spraying, blade coating, brush coating, dip coating and the like; moreover, the formed porcelain glaze coating is unique and free from hydrolysis, and cannot be melted at a certain temperature, so that a base material can be effectively protected from corrosion, abrasion, scraping, acid-alkali, impact, inflaming and fire.

The invention discloses noise reduction type drilling equipment for steel machining. The noise reduction type drilling equipment comprises a base, vertical columns, a lifting beam, a top plate, a motor and a mounting plate. A shock absorption airbag and shock absorption springs are arranged between the base and the mounting plate. A waterproof noise reduction cylinder fixed to the lifting beam isarranged on the outer side of a drill bit in a sleeving mode. A downward spray nozzle is mounted on the corresponding lifting beam and arranged in the waterproof noise reduction cylinder. A noise reduction cover is arranged on the outer side of the motor in a covering mode. A first movable clamping board and a second movable clamping board are separately disposed on the left and right sides of a drill bit hole. Through the shock absorption airbag and the shock absorption springs disposed between the mounting plate and the base, vibration generated during operation is greatly reduced and noiseis reduced; and a soundproof layer in the waterproof noise reduction cylinder can reduce noise generated during drilling, the noise is in waterproof noise reduction cylinder and cannot be transmittedoutward so as to realize noise reduction, and meanwhile, the noise reduction cover disposed on the outer side of the motor reduces the noise generated when the motor runs.

An electronic device comprises a shell body, a heating component and a heat resistance module. The shell body includes a shell part. The heating component is arranged inside the shell body. The heat resistance module is arranged in a blocking manner between the shell part and the heating component. The heat resistance module includes a first heat conducting plate, a second heat conducting plate and third heat conducting plates. The second heat conducting plate is arranged in a blocking manner between the first heat conducting plate and the shell part. The third heat conducting plates are connected with the edge of the first heat conducting plate and the edge of the second heat conducting plate.

The invention relates to a battery module (1;1'), which comprises a shell (2), at least one cell (3) arranged in the shell (2), at least one cooling device (4), at least one inlet (5) for introducing a cooling liquid (6) into the battery, and an outlet for discharging the cooling liquid (6); wherein the cooling liquid (6) is an electrical insulator. The invention also relates to a method.

The invention relates to an air heating tobacco flue-cured machine with improved heating performance. The air heating tobacco curing machine comprises a housing and a heating and heat preservation device. The heating and heat preservation device is arranged in the mounting cavity of the housing. The heating and heat preservation device comprises a heat insulating cup, a smoke containing cup and aheating part. The smoke-containing cup is provided with a smoke-containing main cavity and a contact heat conduction part, and a heating part is arranged below the contact heat conduction part. Between that out side of the smoke cup and the inner side of the heat insulation cup, an air convection gap is maintained. A main chamber body side wall is provided with an air flow radiation heat through hole, that first air inlet of the shell is connected with an air convection gap, the air enters the main chamber body through the first air inlet, the heat element and the air convection gap, and the air flow radiation heating through hole. Therefore, the heat generate by the heating part is transmitted to the smoke body through the combination of the heat contact conduction at the bottom and the convection radiation of the hot side air. The heating area of the smoke body and the heating efficiency of the smoke body are improved, the heat is uniformly heated, the tobacco body is omni-directionally heated, the use taste of the user is improved, the tobacco shred is completely baked, and waste of the tobacco shred is avoided.

The invention discloses a light emitting component and a manufacturing method thereof. The light emitting component comprises a tube seat; a refrigerator, wherein the refrigerator is disposed on the tube seat; a first conductive block, wherein the first conductive block is disposed on the tube seat and disposed at a distance from the refrigerator; a laser which is disposed on the refrigerator; anda driving chip which is disposed on the first conductive block, and electrically connected with the laser. According to the invention, the influence of the heat generated by the laser on the drivingchip can be reduced, the power consumption of the light emitting component is reduced and the stability of the light emitting component is improved.

The invention relates to a retractable type exhaust pipe penetration piece. The retractable type exhaust pipe penetration piece includes a heat insulation material and a bushing; the bushing is arranged at two sides of an exhaust pipe through the heat insulation material; the bushing is provided with a bulkhead; the bulkhead is vertically provided with a mounting base plate; the mounting base plate is horizontally provided with a rain cover; one end of the rain cover is arranged on the exhaust pipe; and a water deflector is arranged between the rain cover and the bushing. With the retractable type exhaust pipe penetration piece of the invention adopted, heat emitted by the exhaust pipe can be isolated, so that the heat will not be transferred to the bulkhead and can be prevented from damaging the paint of the bulkhead; rain water can be prevented from entering the inner side of the bulkhead, and thermal expansion of the exhaust pipe will not be transferred to the bulkhead assuredly, and the exhaust pipe can stretch and contract axially.

The invention discloses a high-power chip resistor which comprises a resistor body and also comprises end caps and a bracket, wherein the end caps are arranged at two ends of the resistor body and are connected with outgoing ends of the resistor body, the bracket is fixed at the bottoms of the end caps. According to the high-power chip resistor, the end caps are connected with the outgoing ends of the resistor body and are supported by the bracket and are connected with a PCB (Printed Circuit Board) through the bracket, thus the lead connection of the conventional resistor is avoided, the welding efficiency of the chip resistor is increased, and the working hour is saved; and meanwhile, after the resistor floats, the heat radiating space is enlarged, a good heat radiating property is achieved, heat can not be transmitted to the PCB to ensure that the PCB is easily demonstrated by safety requirements, and the space of the PCB is saved. In addition, after the resistor floats, a reflow soldering process can be used, and is stable in welding, and thus the yield of products is increased.

The invention aims to provide a device for processing straws, which can process straws in a simplest way. The processed straws are convenient for arrangement, transportation and later use and have fewer odors. In order to achieve the effect, the invention provides the device for processing the straws, which comprises a feed opening, wherein the feed opening is connected with a stirring device by a cutting assembly; the stirring device is connected with a compressing device; the cutting assembly is provided with longitudinal long cutters in sequence from the feed opening to the stirring device; at least one pair of rotating blades is arranged under the long cutters; metal meshes are arranged under the rotating blades; and the distance between the rotating blades and the metal meshes is smaller than 4cm. By adopting the structure, the straws are charged by the feed opening when the straws are processed, the straws are mixed in the stirring device after being cut by the cutting assembly, and finally, the straws are compressed in the compressing device and filled into a pocket.

The invention discloses an elevator without a foundation pit and with a shock insulating device in the technical field of elevators without foundation pits. An installing frame is included, and the inner walls of the left and right sides of the installing frame are each provided with a first shock insulating plate; the left and right sides of a lift car body are each provided with a sliding piecematched with a guide rail; the tops and the bottoms of the sides, close to the first shock insulating plates, of the guide rails are each fixedly provided with a guiding rod. The elevator without thefoundation pit and with the shock insulating device is provided with the first shock insulating plates and buffering springs for cooperation, so that when the lift car body performs lifting running due to cooperation of the sliding pieces and the guide rails and waggles, the generated shocking force is elastically buffered, influences of the shocking force are lowered, and the service life of thelift car body is prolonged; foam layers are arranged in the guide rails and the sliding pieces, during running, generated sound waves enter cavities and the foam layers through sound absorbing micro holes, and therefore the noise of the elevator in the running process is lowered; meanwhile, a sound insulating plate and a sound insulating cotton layer can be used for lowering that the outside soundwaves are transmitted into the lift car body very well, the interior of the lift car body is kept silent, and a user can take the elevator more comfortably.

The invention provides a wheel edge transmission structure of a heavy-duty vehicle. The wheel edge transmission structure of the heavy-duty vehicle is characterized by comprising a half shaft, a wheeledge end cover, a sun wheel, a planetary wheel assembly, a fixed ring gear, a wheel hub, a wheel edge cover and a half shaft sleeve. The wheel edge transmission structure of the heavy-duty vehicle has the technical advantages that the wheel edge driving mode of the heavy-duty vehicle can be switched between two modes, and the versatility of the heavy-duty vehicle is improved.

The invention discloses an automatic heat dissipation capacitor capable of preventing welding heat damage, which comprises a core package, a hollow metal sleeve shell covers the core package, a plurality of annular hollow fins are arranged on the side wall of the hollow metal sleeve shell, a sealing cover is plugged in a sleeve opening of the hollow metal sleeve shell, and two mounting grooves aresymmetrically formed in the lower end of the sealing cover. Through evaporation, condensation and heat dissipation of the insulating heat conduction sleeve, the hollow wall heat conduction pipe and the refrigerant, the problem that the core cladding is damaged by heating or the service life is shortened due to overheat welding or overlong welding time of the capacitor is solved, and the problem of working heat dissipation of the capacitor is solved by attracting the magnetic piston ring through the electromagnetic box to push the refrigerant to enter the hollow metal sleeve shell.

The invention discloses a manufacturing method for prolonging the service life of a KR stirrer, specifically comprising the steps of: selecting a steel core, removing impurities on the surface of the steel core, washing and cleaning the steel core, and airing; welding a group of riveting pieces with different heights ranging from 30mm to 80mm on the surface of the steel core; covering a refractory fiber material layer with the thickness of 0-50mm on the surface of the steel core, coating a castable layer with the thickness of 60-120mm on the refractory fiber material layer, and baking the entire device for 36-60h at the temperature of 80-100 DEG C; and continuously heating the baked device to ensure that the temperature reaches 320-350 DEG C, and maintaining the temperature for 8-16h. The method is simple and energy-saving, and the used materials are not molten at high temperature and can stop the heat from being transmitted to the steel core, therefore, not only is the expansion degree of the steel core alleviated, but also the extrusion stress generated due to the expansion of the steel core can be effectively buffered so that the quantity of the cracks generated after the KR stirrer is baked can be reduced to the minimum.

The invention discloses a real-time step detection method based on a binocular camera. Obtain the depth information of the image through the parallax of the two images collected by the binocular camera, and combine the nine-axis gyroscope (gravity acceleration, gyroscope, magnetometer) to reconstruct the depth information in the camera coordinate system into a three-dimensional point in the world coordinate system Cloud, segment the point cloud composed of roads and other point clouds by the plane fitting method, and then perform plane fitting on the point cloud composed of roads to judge whether the road is flat or composed of steps. The present invention can detect the upper and lower steps and the distance from the user in real time, and can help visually impaired people (blind people, people with low vision) go up and down the steps to ensure their personal safety; the present invention adopts passive detection, low power consumption, no It will interfere with others, and fully considers the interference factors that may be encountered in various practical environments, and has the advantages of fast speed, high precision, and high cost performance.

The invention discloses an opening sealing device for a vacuum heat insulation plate. The opening sealing device comprises a bottom plate, wherein a box body with a downward open opening is arranged above the bottom plate; a power device used for controlling the box body to vertically move is also arranged at one side of the bottom plate; a vacuum pumping device is also arranged on the top of thebox body; a base plate is supported and fixed at the upper side of the bottom plate through a group of upright posts; two vertical plates are symmetrically and fixedly connected to the upper side of the base plate; a pad plate is rotationally matched and connected between the two vertical plates; a turning device used for controlling the pad plate to turn is also arranged at the upper side of thebase plate; and a hot sealing device is arranged on the top of the inner side of the box body. The opening sealing device has the advantages that after a blocking bag of the vacuum heat insulation plate is sealed at a high temperature, a bag opening of the blocking bag is turned through the turning pad plate and is bonded onto the vacuum heat insulation plate through glue water; the heat insulation plate processed in such a way is convenient to install; and in the use process, heat cannot be transferred from the bag opening of the blocking bag, so that the heat insulation performance is improved.

The invention, which belongs to the technical field of test equipment, discloses a comprehensive tester and method for testing salt expansion and thermal expansion of a semi-rigid base layer. The tester comprises a temperature and humidity test rod, a test chamber, a refrigeration / heating system and a sample cylinder. A saliferous semi-rigid base layer test sample is installed in the sample cylinder. The refrigeration / heating system inputs a cold / heat medium into a heat transfer cover plate; and the heat transfer cover plate and the saliferous semi-rigid base layer test sample carry out heat transferring to simulate the actual road surface heating condition. A pressure sensor detects the expansibility of the saliferous semi-rigid base layer test sample; and a displacement sensor detects the expansion amount of the saliferous semi-rigid base layer test sample. Meanwhile, with the temperature and humidity test rod, the internal temperature field change, water-salt transferring, thermal expansion and salt expansion characteristics of the saliferous semi-rigid base layer test sample can be tested. The tester based on the reasonable structural design is capable of simulating the actualroad surface condition well, thereby providing the theoretical basis and practical guidance for studying the arch expansion phenomenon of the semi-rigid base layer.

The invention discloses an elastic piece type extraterrestrial celestial body surface soil sampling mechanism and a sampling method. The sampling mechanism comprises a fixation support, an outer housing, an elastic piece lead screw, a rotating disc mechanism, an elastic piece nut, a rotating disc blocking piece, a sample pushing mechanism and eight elastic pieces. The fixation support is arrangedin the outer housing; the fixation support is connected with the outer housing and the elastic piece lead screw through bearings; after penetrating through a double-rib structure, a center hole of therotating disc mechanism is horizontally formed in the outer housing; the elastic piece nut and the rotating disc blocking piece are arranged between the rotating disc mechanism and the double-rib structure; the bottoms of the eight elastic pieces are connected to the rotating disc mechanism through screws; and the sample pushing mechanism is arranged in a cavity defined by the eight elastic pieces and connected with the fixation support through a nut structure. The problem that whether an existing sampling mechanism succeeds in sampling or not is limited by the compactness of celestial body soil is solved.

The invention discloses a pre-tightening connecting assembly used for mounting a curtain wallboard, which comprises a keel used for supporting the curtain wallboard, and a limiting component made of thermal insulating material. The limiting component is detachably connected with the keel and is provided with a limiting part; and a limiting groove used for carrying out pretightening positioning on the curtain wallboard is formed between the limiting part and the keel. The pre-tightening connecting assembly is simple and compact in structure, convenient to install, high in mounting efficiency and good in thermal insulation and can improve the safety of the mounting operation.

The invention provides a defrosting water collecting and evaporating system for a cabinet freezer, and belongs to the technical field of cabinet freezers. The problems that an existing refrigerating system is unreasonable in arrangement and low in defrosting water evaporation efficiency are solved. The cabinet freezer comprises an evaporator, a condenser, a compressor and a freezer body, the evaporator is located at the top of the freezer body, the condenser and the compressor are both located at the bottom of the freezer body, and the collecting and evaporating system comprises a water receiving disc located at the top of the freezer body and the bottom of the evaporator and a water receiving barrel located at the bottom of the freezer body. The water receiving bucket is located on the side portion between the condenser and the compressor, the condenser and the compressor are connected through an evaporation pipe, and the evaporation pipe is partially located in the water receiving bucket. According to the defrosting water collecting and evaporating system of the freezer, the space is reasonably utilized, and the evaporating efficiency of defrosting water is improved.

The invention discloses an improved SM4 parallel encryption and decryption communication method based on a GPU (Graphics Processing Unit). The encryption and decryption method comprises the following steps: using an AES (Advanced Encryption Standard)-128 key expansion algorithm to generate an expanded subkey needed by an SM4 encryption algorithm; improving a round function in the SM4 encryption algorithm; and using the parallel computing power of the GPU, improving the SM4 encryption algorithm into a form of parallel encryption. By adopting the encryption and decryption communication method of the invention, the security and the speed of implementation can be effectively improved, real-time and parallel encryption can be performed on data, and the encryption speed can be improved, so that normal transmission of data flow can be guaranteed and the processing delay can be reduced.

The invention discloses a compression-resistant composite cable. The cable comprises a cable sheath layer, and more than one protruding first convex part is arranged on the outer surface of the cablesheath layer in a protruding manner by surrounding the cable sheath layer by a circle. A circular cavity is formed at the center of the cable sheath layer, and the inner wall of the circular cavity ofthe cable sheath layer is provided with more than one second protruding part around the circular cavity by a circle in a protruding manner. Each first protruding part is exactly opposite to one second protruding part. A first clamping opening is formed in the middle of each first protruding parts, and a second clamping opening is formed in the middle of each second protruding parts relative to the first clamping opening, wherein the open ends of the two clamping openings are oppositely arranged to form a closed clamping cavity, a cable core wire is installed in each clamping cavity, and a closed opening is formed at the side, away from the corresponding first protruding part, of each second protruding part. The cable has multiple compression-resistant and shearing-resistant protection structures, can greatly improve the protection capability of the cable sheath layer, effectively protects the internal core wire from being directly sheared, and improves the use safety of the core wire.

The invention discloses a comprehensive tester and method for testing the salt expansion and temperature expansion of a semi-rigid base, belonging to the technical field of test equipment. Including temperature and humidity test rod, test chamber, refrigeration / heating system and sample cylinder; the salt-containing semi-rigid base layer sample is installed in the sample cylinder, and the cold / heat medium is input into the heat transfer cover plate through the refrigeration / heating system, and the heat transfer Heat transfer occurs between the thermal cover plate and the salt-containing semi-rigid base sample to simulate the actual road surface heating. The pressure sensor detects the expansion force of the salt-containing semi-rigid base sample, and the displacement sensor detects the salt-containing semi-rigid base sample. At the same time, through the temperature and humidity test rod, the internal temperature field change, water and salt migration, temperature expansion and salt expansion characteristics of the salt-containing semi-rigid base can be tested. The structure design of the device is reasonable, can better simulate the actual road conditions, and provide theoretical basis and practical guidance for the study of the arching phenomenon of the semi-rigid base.

The invention discloses an unmanned aerial vehicle. The unmanned aerial vehicle includes an unmanned aerial vehicle which is remotely controlled by a remote-control unit, the unmanned aerial vehicle includes a host, a battery assembly is mounted at the bottom of the host in an opening and closing mode, a propeller is arranged at the top of the host, a control main board and a driving motor are arranged inside the host, the driving motor is mounted on a supporting board inside the host, the power input end of the control main board provides power for the battery assembly, the driving motor is controlled and powered by the control main board, the propeller is mounted on a motor shaft extending from the driving motor, and the motor is fixed to and mounted on the supporting board by a motor bracket at the bottom and screws. According to the unmanned aerial vehicle, a landing gear structure is canceled, the battery assembly is separated from the host, very good heat dissipation performanceis achieved, at the same time, the battery assembly can be opened during landing, the battery assembly is used as buffer landing of the whole aerial vehicle, safety performance is high, and the position of the battery assembly is reasonably arranged.

The invention discloses a noise isolation ventilating window for an office building. The noise isolation ventilating window comprises a window body. The side wall of the window body is provided with aplurality of vents and revolving grooves. The revolving grooves communicate with the vents. Glass columns are rotatably connected inside the revolving grooves in a sealed mode. Air holes are formed in the side walls of the glass columns. The glass columns are installed in the revolving grooves through spring shafts. The inner walls of the glass columns are fixedly connected with strip plates. Thestrip plates are made of silicon steel sheets. Electromagnets are embedded in the upper and lower ends of the window body. Different magnetic poles of the two electromagnets are opposite to each other. Vibrating plates are resonated when a car whistle is sounded outside the window, and generate an induced current to supply power to the electromagnets through a power amplifier, so as to generate an induced magnetic field between the upper and lower ends of the window body and make the strip plates distributed vertically along magnetic field lines. The glass columns can be driven to rotate andblock the vents, the air inside and outside the window is blocked, and the noise outside the window can be effectively prevented from entering a room.

The invention relates to the technical field of office appliances, in particular to an office sunshade curtain with a charging function for office. The technical problems that operation is troublesome, the function is single, and aging is prone to occurring are solved. In order to solve the technical problem, the office sunshade curtain with the charging function for the office is provided, and composed of an automatic hinge mechanism, a solar charging mechanism and a protective heat insulation mechanism, by arranging a single-chip microcomputer, a first motor and a second motor, the effect that a louver can be closed without manpower is achieved, the problem that a traditional louver needs to be opened and closed manually is solved, through cooperation of a solar cell panel and a storage battery, the effects of function diversification, saving and environmental protection are achieved, then the problem that the traditional louver is single in function is solved, and through cooperation between a rubber protection layer and heat insulation cloth, the service life of louver blades is prolonged, and heat cannot be transmitted to the office environment from the louver blades.

The invention discloses a sealing device for a vacuum insulation board, which comprises a bottom plate, an open box body is arranged above the bottom plate, and a power device for controlling the movement of the box body up and down is installed on one side of the bottom plate. The top of the box is provided with a vacuum device, and the base plate is supported and fixed by a set of columns on the upper side of the base plate, and two vertical plates are symmetrically fixed on the upper side of the base plate, and the connecting pads are rotated between the two vertical plates plate, on the upper side of the base plate, an overturning device for controlling the overturning of the backing plate is provided, and a heat sealing device is installed on the inside top of the box. The advantages of the present invention are: after the barrier bag of the vacuum insulation board is sealed at high temperature, the bag mouth of the barrier bag is turned over by turning over the backing plate and bonded to the vacuum insulation board by glue, so that the processed insulation board is easy to install and can be used on the vacuum insulation board When in use, heat will not be transferred from the mouth of the barrier bag, which improves its thermal insulation performance.

The invention provides a sunken type 3D printer forming system. The sunken type 3D printer forming system is characterized by comprising a base, wherein a material cylinder which is used for accommodating printing materials is arranged on the base; an upper fixed base is arranged at the upper end of the material cylinder; a forming platform which can be moved up and down is arranged in the material cylinder; an exposure module which can be moved up and down is arranged above the material cylinder; a device A for reducing the tensile force of the surface of the printing material is arranged between the exposure module and the forming platform; the exposure module is provided with a light source, and is positioned above the material cylinder and does not directly contact with the material cylinder; the printing material is cured after being irradiated by light, the forming platform is moved downwards, and a layer of printing is finished. During printing, through a sunken structure, the light source of the exposure module is vertically irradiated onto a liquid-state photosensitive resin material in a short distance, so that the exposure time is shorter, the printing speed is high, the strength of printed workpieces is higher, and the device A is used for reducing the tensile force of the surface of the printing material, so that the printing accuracy is higher, and the printed workpiece is more attractive.

The invention discloses a compression-resistant composite cable. The cable comprises a cable sheath layer, and more than one protruding first convex part is arranged on the outer surface of the cablesheath layer in a protruding manner by surrounding the cable sheath layer by a circle. A circular cavity is formed at the center of the cable sheath layer, and the inner wall of the circular cavity ofthe cable sheath layer is provided with more than one second protruding part around the circular cavity by a circle in a protruding manner. Each first protruding part is exactly opposite to one second protruding part. A first clamping opening is formed in the middle of each first protruding parts, and a second clamping opening is formed in the middle of each second protruding parts relative to the first clamping opening, wherein the open ends of the two clamping openings are oppositely arranged to form a closed clamping cavity, a cable core wire is installed in each clamping cavity, and a closed opening is formed at the side, away from the corresponding first protruding part, of each second protruding part. The cable has multiple compression-resistant and shearing-resistant protection structures, can greatly improve the protection capability of the cable sheath layer, effectively protects the internal core wire from being directly sheared, and improves the use safety of the core wire.

The invention discloses a manufacturing method for prolonging the service life of a KR stirrer, specifically comprising the steps of: selecting a steel core, removing impurities on the surface of the steel core, washing and cleaning the steel core, and airing; welding a group of riveting pieces with different heights ranging from 30mm to 80mm on the surface of the steel core; covering a refractory fiber material layer with the thickness of 0-50mm on the surface of the steel core, coating a castable layer with the thickness of 60-120mm on the refractory fiber material layer, and baking the entire device for 36-60h at the temperature of 80-100 DEG C; and continuously heating the baked device to ensure that the temperature reaches 320-350 DEG C, and maintaining the temperature for 8-16h. Themethod is simple and energy-saving, and the used materials are not molten at high temperature and can stop the heat from being transmitted to the steel core, therefore, not only is the expansion degree of the steel core alleviated, but also the extrusion stress generated due to the expansion of the steel core can be effectively buffered so that the quantity of the cracks generated after the KR stirrer is baked can be reduced to the minimum.