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1158results about "Charge supports" patented technology

Anti-corrosion ceramic sagger and preparation method thereof

The invention provides an anti-corrosion ceramic sagger and a preparation method thereof.The anti-corrosion ceramic sagger comprises an aggregate layer and a matrix layer, and the aggregate layer is prepared from, by mass, 30-50 parts of yttrium-stabilized zirconia, 20-30 parts of silicon carbide and 15-25 parts of magnesium aluminate spinel; the matrix layer is prepared from the following raw materials in parts by mass: 40 to 50 parts of mullite micro powder, 30 to 40 parts of cordierite micro powder and 10 to 20 parts of binding agent. According to the anti-corrosion ceramic sagger and the preparation method thereof, by optimizing the raw material ratio and the preparation process, the corrosion depth is smaller than or equal to 0.19 mm after the sagger is soaked in the molten salt environment at 900 DEG C for 72 h, the service life is prolonged by 6-8 times compared with that of a traditional corundum sagger, and the anti-corrosion ceramic sagger has wide application prospects.
Owner:CHANGSHA ZHONGCI NEW MATERIAL TECH CO LTD

Secondary roasting charging and discharging process for graphitized product

The graphitized product secondary roasting charging and discharging process comprises the following steps that S1, a high-purity graphite support or a multi-layer support structure is arranged in a hearth of a graphite furnace, and a graphite product is hoisted to the graphite support or the multi-layer support through a special clamp for charging; s2, sectional heating is adopted, the heating process is divided into a low-temperature section, a medium-temperature section and a high-temperature section, and the heating rate of each stage is controlled; s3, after roasting is completed, natural cooling is conducted, and after the temperature is reduced to the preset temperature, products are discharged out of the furnace; s4, the graphite product is clamped through a special clamp to be lifted out of the furnace, and in the step S1, the graphite product is vertically arranged on the graphite support and is arranged on the multi-layer support structure in a layered mode; when the secondary roasting charging and discharging process for the graphitized product is used, the stability and roasting uniformity of the product in a hearth can be guaranteed, segmented heating roasting is carried out in the furnace, graphite product cracking or performance reduction caused by temperature fluctuation can be avoided, the product quality is guaranteed, and the secondary roasting charging and discharging process for the graphitized product is suitable for application and popularization.
Owner:SHANXI BOXIANG HUILIANG NEW MATERIAL CO LTD

Continuous graphitization furnace for graphite felt production

The utility model relates to the technical field of graphitization devices, and discloses a continuous graphitization furnace for graphite felt production, which comprises a graphitization furnace body, a conveying mechanism and a heating mechanism are arranged on the surface of the graphitization furnace body, and the heating mechanism is positioned on the inner side of the conveying mechanism; the conveying mechanism comprises a conveying assembly and an overturning assembly; the overturning assembly is located on the surface of the conveying assembly. The conveying assembly comprises a heating box and a furnace cover, and the left side face of the graphitization furnace body fixedly penetrates through the right side face of the heating box and extends into the heating box. The conveying mechanism drives the sliding block and the furnace cover to move towards the right side, the device is fully opened, graphite felt materials can be conveniently taken and placed, in the overturning assembly, the graphite felt materials are fixed to a supporting plate through a pressing plate, meanwhile, the supporting plate is driven to overturn through a rotating rod, and in the graphite felt material heating process, the graphite felt materials are heated through the rotating rod. And the graphite felt material placed on the supporting plate rotates along with the supporting plate, so that the graphite felt material is heated more uniformly.
Owner:LIAOCHENG QIYUAN MASCH EQUIP CO LTD

Vacuum integrated flash sintering device and sintering method

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.
Owner:INNER MONGOLIA UNIV OF SCI & TECH

Annular furnace heat-resistant supporting forged base plate and additive manufacturing process and fixing device of annular furnace heat-resistant supporting forged base plate

The invention discloses an annular furnace heat-resistant supporting forged chassis and an additive manufacturing process and a fixing device thereof, and belongs to the technical field of plating of metal materials, and the annular furnace heat-resistant supporting forged chassis comprises the steps that heat-resistant alloy steel base metal with specific components is prepared; carrying out laser texturing and nickel-based alloy bottom layer pretreatment on the surface of the steel plate; performing laser cladding on high-silicon high-temperature alloy powder containing niobium and rare earth elements to form a functional cladding layer, and performing gradient cladding on the edge of the atmosphere guide hole; and finally, carrying out heat treatment and assembling with a fan-shaped refractory brick fixing device. A composite oxide film and a multi-scale strengthening system are constructed, hydrogen resistance and brittleness resistance are effectively achieved, interface thermal stress is relieved, cracking and stripping of a cladding layer are avoided, a fixing device adapts to thermal expansion, the atmosphere is dredged, and the annealing uniformity of a steel coil is improved; the problems of creep deformation, hydrogen embrittlement, cladding layer stripping and thermal stress cracking of a traditional supporting component under the conditions of high temperature, heavy load and nitrogen and hydrogen atmosphere are solved.
Owner:BAOMEITE (SHANGHAI) INTELLIGENT ENG CO LTD

Sintering bearing plate for sintering powder metallurgy product and preparation method of sintering bearing plate

The invention provides a setter plate for sintering a powder metallurgy product and a preparation method of the setter plate, and belongs to the technical field of setter plates. The refractory material is prepared from the following raw materials in parts by weight: 20-40 parts of fused zirconium mullite, 20-40 parts of modified sintered corundum, 30-50 parts of alumina micro powder, 0.5-1 part of yttrium oxide / alumina-carbon nanotube hollow microsphere powder, 0.5-1 part of zinc oxide micro powder and 5-10 parts of a binder. The setter plate for sintering the powder metallurgy product has the advantages of good heat insulation, high temperature resistance, thermal shock resistance and chemical stability, good mechanical properties, good hardness and good wear resistance, the problems of cracking, deformation and the like caused by thermal shock are reduced, the service life of the setter plate is prolonged, and the setter plate has a wide application prospect.
Owner:XINSHAORENHAI SCI&TECH MATERIAL DEV CO LTD

Wrapped green body carrier

According to certain aspects, a wrapped green body carrier for a green body includes side supports and moveable supports mounted to the side supports. Each of the moveable supports includes an inner end configured to move relative to the side supports. The green body carrier includes a flexible sheet attached to and suspended from each inner end of the moveable supports. The inner ends of the moveable supports are configured to move inward to wrap the flexible sheet around at least a portion of the green body (e.g., more than 180°). Accordingly, the wrapped green body carrier supports a large circumference of the green body and accommodates large deviations in shape and / or diameter. In certain embodiments, the flexible sheet includes radiation coupling material or radiation blocking material so that wrapping the flexible sheet around the green body improves uniformity during microwave drying.
Owner:CORNING INC

Secondary roasting device and roasting method for graphite electrode production

The invention discloses a secondary roasting device and roasting method for graphite electrode production, and belongs to the technical field of graphite electrode roasting devices.The secondary roasting device for graphite electrode production comprises a furnace body and two sliding rails arranged on one side of the furnace body, and a bottom plate is assembled on the sliding rails in a sliding mode; the bearing plate can be pulled out of the furnace body through cooperation of the hook plate and the connecting groove, when a new bearing plate falls onto the inner barrier strip and the outer barrier strip, the reversing assembly can release the locking relation with the inner barrier strip, then the pulling force direction of the auxiliary steel cable on the guide block is changed, the auxiliary steel cable can pull the bottom plate to gradually get close to the furnace body, and therefore the furnace body is protected. And the bearing plate is pushed into the furnace body through the ejector rod, manual intervention is little in the whole process, so that the process of entering and exiting the furnace is safer, the whole operation is completed only through cooperation of the main steel cable and the auxiliary steel cable, and the device is simple in overall structure and convenient to maintain.
Owner:SHANXI TRISAGE NEW ENERGY CO LTD

Vertical furnace

The present disclosure provides a vertical furnace. The vertical furnace comprises a furnace tube, a storage device, a loading device, a wafer boat, a first carrying device, a second carrying device and a gas system. A furnace chamber used for heating a wafer is arranged in the furnace tube. The storage device is provided with a storage chamber and a carrying table located in the storage chamber, and the carrying table is used for carrying a wafer box. The loading device is used for loading a wafer box for storing a wafer to be heated. The wafer boat is used for moving a wafer to be heated between the furnace chamber and the loading device. The first carrying device is used for moving the wafer box between the carrying table and the loading device. And the second carrying device is used for moving the to-be-heated wafer between the loading device and the wafer boat. And the gas system comprises a gas inlet port and a gas outlet port which are arranged on the carrying table, and is used for introducing protective gas into the wafer box through the gas inlet port and discharging the gas from the wafer box through the gas outlet port so as to inject the protective gas of which the pressure is greater than the environmental pressure into the wafer box. Consequently, pollutants in the environment can be prevented from making contact with the wafer, and the interior of the wafer box is clean.
Owner:BEIJING HEQI PRECISION TECH LTD

Vacuum high-temperature furnace

The invention relates to a vacuum high-temperature furnace. The vacuum high-temperature furnace comprises a supporting frame body, a furnace module, a molecular pump and a cooling water inlet pipe group, wherein the furnace module is mounted on the supporting frame body; the molecular pump is mounted on the supporting frame body and is communicated with the furnace module; the furnace module comprises a furnace body and a furnace door installed at an opening of the furnace body in an openable and closable mode, and the furnace door locking assembly comprises a plurality of lower wedge blocks installed on the side face of the second flange ring at intervals; the rotating mechanism comprises a connecting ring rotationally arranged on the furnace body in a sleeving manner, a bearing ring formed on the inner circle of the connecting ring, and a plurality of upper wedge blocks which are mounted on the inner surface of the bearing ring and are matched with the lower wedge blocks in a one-to-one correspondence manner; and the driving mechanisms are used for driving the rotating mechanism to rotate, so that the upper wedge block is in contact with or separated from the lower wedge block. And the heating and sealing effects of the vacuum high-temperature furnace are improved.
Owner:WUXI SIRUI ELECTRONICS EQUIP TECH CO LTD

Gas phase aluminizing tool for engine turbine blade

The utility model relates to the technical field of aluminizing, and provides a gas phase aluminizing tool for an engine turbine blade, which comprises a loading box, and the loading box comprises a chassis for loading aluminizing raw materials; the bottom net is placed at the top of the chassis; the outer box is used for loading aluminizing raw materials and is of an annular structure with the upper end and the lower end opened, meshes are formed in the inner side of the outer box, and the outer box is placed on the outer edge of the bottom net; the inner box is of an annular structure with the upper end and the lower end opened, meshes are formed in the inner side and the outer side of the inner box, the inner box is placed in the center of the bottom net, and a placing area used for placing blades is formed between the inner box and the outer box. The base plate, the outer box and the inner box are all used for containing aluminizing raw materials, the blade is placed in the containing area between the outer box and the inner box, so that the aluminizing raw materials are arranged on the lower portion and the side face of the blade, the follow-up aluminum atmosphere can make contact with all the surfaces of the blade conveniently, and the aluminizing thickness and quality consistency of all the surfaces of the blade are improved.
Owner:CHENGDU HEHONG TECH CO LTD

Roll shaft type V-shaped gas heating furnace

The utility model provides a roll shaft type V-shaped gas heating furnace, and belongs to the technical field of gas heating furnaces. The roller shaft type V-shaped gas heating furnace comprises a furnace body, a transmission roller, a supporting beam, a gas pipe, a first supporting base, an air pipe, a waste gas pipe, a first radiant tube, a first air valve, a first combustor, a second radiant tube, a second air valve and a second combustor. The two first radiant tubes are arranged above to heat workpieces placed on the multiple transmission rollers, and the second radiant tubes are arranged below to heat the workpieces placed on the multiple transmission rollers, so that all-directional heating of the workpieces is achieved, the workpieces reach the preset temperature within the shortest time, and the heating efficiency of the workpieces is improved. And the working efficiency of the product is improved. When the thickness of the workpiece is large, the workpiece is heated from the upper direction and the lower direction through the first radiant tube and the second radiant tube, so that the upper portion and the lower portion of the workpiece are prevented from being heated unevenly, the heat treatment effect on the workpiece is improved, and the machining quality of products is improved.
Owner:CHONGQING RELIAN INTELLIGENT TECHNOLOGY CO LTD

Nano oxide calcination structure

The utility model relates to a nanometer oxide calcining structure, which is characterized in that a calcining tube placing frame body is positioned in a calcining furnace and comprises a vertical column fixed in the calcining furnace, a calcining tube placing platform is coaxially arranged on the vertical column, and a plurality of calcining tube bodies positioned on the periphery of the vertical column are arranged on the calcining tube placing platform; a gap is formed between every two adjacent calcining pipe bodies; a high-temperature air duct is arranged inside the vertical column, and an air outlet for blowing high-temperature gas to the gap is formed outside the vertical column; and a combustion gas outlet and a combustion gas inlet are formed in each calcining pipe body. When the calcining tube is used, nano oxides needing to be calcined are separately packaged in the calcining tube bodies to be calcined, and due to the fact that the nano oxides in each calcining tube body are few, a user does not need to worry about non-uniform heating of a part of the interior of the calcining tube body; by means of the calcining pipe placing frame body, the calcining furnace and the calcining pipe placing frame body enable high-temperature gas to flow in gaps between calcining pipe bodies, and uniform contact of heat is guaranteed in an internal and external heating mode.
Owner:MINGSU OPTOELECTRONICS TECH (SHANGHAI) CO LTD

Gradient composite kiln furniture based on spinel interface strengthening and preparation method thereof

The invention relates to the technical field of high-temperature sintering, and particularly discloses a gradient composite kiln furniture based on spinel interface strengthening and a preparation method thereof. Wherein the kiln furniture sequentially comprises a mullite matrix layer, a silicon carbide enhancement layer and a zirconium oxide high-temperature-resistant layer from outside to inside, and the layers are chemically bonded through an in-situ generated MgAlO spinel interface layer. The preparation method comprises the following steps: carrying out layered tape casting on gradient slurry, carrying out isostatic pressing lamination molding, generating an MgSi transition phase at 1380-1420 DEG C through a stepped sintering process, and heating to 1600-1650 DEG C at a specific heating rate to form a continuous spinel interface. According to the kiln furniture, gradient component design cooperates with spinel interface strengthening, the problem of interface stripping caused by thermal expansion mutation of a traditional double-layer structure is solved, and the kiln furniture has excellent thermal shock stability and high-temperature strength retention rate. According to the preparation method, precise construction of the spinel interface is realized through staged reaction control.
Owner:SUZHOU YIBEI HIGH TEMPERATURE TECH MATERIALS CO LTD

Protective layer for high-voltage ternary positive electrode material sagger and preparation method of protective layer

The invention relates to the technical field of lithium batteries, in particular to a preparation method of a protective layer for a high-voltage ternary positive electrode material saggar, which comprises the following steps: uniformly mixing zirconium oxide, a lithium source compound, a binder and water according to the mass ratio of (2-3): (2-5): (1-5): (10-60) to prepare slurry; and uniformly coating the mixture on the bottom and the side wall of the sagger, pressing, drying and sintering to obtain the protective layer. According to the method, a compact composite protection layer from the pre-lithiation sagger surface layer to the lithium zirconate layer is successfully formed on the sagger surface, the sagger corrosion rate is reduced, composition segregation caused by the fact that zirconium / lithium components in the ternary material are adsorbed by the sagger is inhibited, the interface thermal stress concentration phenomenon is remarkably relieved, the cycle service life of the sagger is prolonged, and falling of the protection layer is avoided. In addition, the invention also discloses the protective layer prepared by the method and application thereof.
Owner:YINGDE KEHENG NEW ENERGY TECH CO LTD

Graphite sagger and preparation method and application thereof

The invention provides a graphite sagger and a preparation method and application thereof, and belongs to the technical field of graphite saggers. The preparation method comprises the following steps: crushing and shaping a graphite raw material to obtain raw materials with different particle sizes, granulating and spheroidizing to form graphite materials with different particle sizes, grading and mixing according to a ratio, isostatic pressing, carbonizing and sintering to prepare the graphite saggar. By adopting a high-temperature granulation process, light small molecules in the raw materials can be removed, asphalt carbon can be filled, and meanwhile, a layer of coating can be formed on the surface of a matrix, so that surface defects are improved, and the compactness of the matrix material is improved; the material can be spheroidized through mechanical acting force, the diameter-thickness ratio difference is reduced, the particle orientation is reduced, the surface energy is reduced, the filling property is improved, and the stacking efficiency is optimized, so that the purpose of improving the strength and density of the base material is achieved; in addition, the strength and the density of a finished product can be improved through excellent grain composition and isostatic pressing forming.
Owner:TONGLING ZHONGCHANG NEW MATERIALS CO LTD

Rotatable copper pipe coil rack

The utility model provides a rotatable copper pipe disc material rack which comprises an upper layer material rack, a middle layer material rack and a bottom layer material rack which are sequentially arranged from top to bottom, the upper layer material rack comprises a first bottom disc, a first annular disc, a first middle column and a first connecting column, and the first bottom disc comprises a supporting framework and a sliding part. The supporting framework is of a plurality of strip-shaped structures arranged in an umbrella shape, the sliding part comprises a sliding groove, a sliding rail and a rolling wheel, the sliding groove is of an annular groove structure penetrating through the supporting framework, the rail is of an annular structure and is arranged in the sliding groove, and the first annular disc is welded to the sliding rail. According to the rotatable copper pipe disc material frame, rotation of the first annular discs is achieved, an operator does not need to move along the rotatable copper pipe disc material frame and only needs to rotate the first annular discs along the sliding grooves according to requirements, copper pipe disc materials can be placed in the five first annular discs respectively, the operation efficiency is improved, and the labor intensity of operators is lowered. And good ventilation in the copper pipe annealing process is guaranteed, and meanwhile assembly and disassembly are convenient.
Owner:CHANGZHOU CHANGFA REFRIGERATION TECH CO LTD

Material-grade vacuum low-temperature environment mechanical test system

The invention relates to a material-grade vacuum low-temperature environment mechanical test system, and relates to the technical field of vacuum low-temperature furnaces. Comprising a test host, vacuum equipment, a platform assembly, a mechanical pump set and an exhaust device. Vacuum equipment and a platform assembly are mounted on the test host in a sliding manner and are used for supporting the vacuum equipment and the platform assembly; the vacuum equipment is used for providing a vacuum environment for the test sample and carrying out various tests on the test sample; the platform assembly is communicated with vacuum equipment through a vacuum pipeline; the mechanical pump set is connected with the vacuum pipeline through a vacuumizing pipeline and is used for pumping out gas in the vacuum equipment; and the exhaust device is mounted on the vacuum equipment and used for exhausting air and monitoring the air pressure state in the vacuum equipment. The device can provide a static mechanical test, a fatigue test and a material fatigue test, and can be used in multiple scenes of material fatigue test, stretching, compression, bending, shearing and the like.
Owner:DALIAN UNIV OF TECH

Sintering stack with controllable inserting strip height and system and method for controlling magnetic performance fluctuation of hard alloy bar

The invention belongs to the technical field of hard alloy sintering, and particularly relates to a sintering stack with controllable insertion strip height and a system and method for controlling magnetic performance fluctuation of a hard alloy bar. The sintering stack with the controllable inserting strip height comprises a plurality of sintering boats and a plurality of inserting strip sets. The sintering boats and the insertion strip groups are alternately arranged; and the minimum height difference of the insertion strips among the plurality of insertion strip groups is 1-2mm. According to the sintering stack with the height-controllable inserting strips, the height of the sintering boat can be set in a gradient mode through the multiple sets of inserting strips with different heights according to the carbon atmosphere concentration, airflow and temperature distribution in a sintering furnace, the gradient distribution of a temperature field and the carbon atmosphere in the sintering furnace is effectively compensated, the carbon atmosphere and temperature distribution in the hard alloy sintering process is controlled, and the sintering efficiency is improved. The method can greatly reduce the fluctuation of magnetic properties of hard alloy bar products, reduce the difference of physical properties of the hard alloy bar products sintered in the same furnace, improve the consistency of various physical properties of the sintered hard alloy, and improve the stability of the service life of the hard alloy products.
Owner:ZHUZHOU HARD ALLOY GRP CO LTD

Vacuum sintering machine with tray module

The utility model relates to the technical field of vacuum sintering machines, and discloses a vacuum sintering machine with a tray module, which comprises a vacuum sintering machine main body and a sealing cover, linear guide rails are fixedly mounted on the front side and the rear side of the vacuum sintering machine main body, guide sleeves are fixedly mounted on sliding tables of the linear guide rails, and polish rods are slidably mounted on the guide sleeves. The right end of the polished rod and the sealing cover are fixedly assembled, a supporting base is fixedly installed at the bottom of the left side of the sealing cover, a tray module is placed on the upper side of the supporting base, and a driving assembly used for lifting the guide sleeve is installed on the upper side of the vacuum sintering machine body. Through the tray module which is detachably used on the supporting seat, the annular parts can be conveniently placed on the tray module after being stamped and installed in the sealing cover, gaps can be reserved between the annular parts, and the heating uniformity and the yield are improved; and structures such as a driving assembly and a guide sleeve are arranged, so that the sealing cover can conveniently carry out translation and lifting movement with the tray module, and the labor amount of workers is greatly reduced.
Owner:LIAONING KENING VACUUM TECHNOLOGY CO LTD

Roasting furnace for carbon products and roasting control method

The invention discloses a roasting furnace for carbon products and a roasting control method, and the roasting furnace for the carbon products comprises a furnace body which is divided into a plurality of roasting areas in the direction from a product inlet to a product outlet of the furnace body; the carrying device is partially arranged in the furnace body and is used for conveying the carbon products from the product inlet of the furnace body to the product outlet of the furnace body; the multiple heating devices are arranged on the inner side wall of the furnace body at intervals, each roasting area is provided with at least one heating device, and the heating temperatures of the heating devices arranged in different roasting areas are different. The technical problem that large energy loss is caused by roasting temperature control is solved.
Owner:ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO

Furnace-based thermal-shock systems and methods

An assembly for use with a furnace can include a conveyance member, a substrate, and a heating support material. The substrate can have one or more precursors deposited thereon. The conveyance member can be constructed such that at least a portion thereof can be moved between a first and second positions with respect to the furnace. The heating support material can be between the conveyance member and the substrate. The heating support material can support the substrate on the conveyance member. The assembly can be subjected to a thermal shock via the furnace. The thermal shock can be at a temperature of at least 1000 K for a duration of 60 seconds or less. The substrate can be supported on the heating support material and the first portion of the conveyance member during the thermal shock.
Owner:UNIV OF MARYLAND +2

Roller kiln transmission cooling system and roller kiln device

The utility model discloses a roller kiln transmission cooling system and a roller kiln device.The roller kiln transmission cooling system comprises a kiln body, a transmission platform composed of a plurality of ceramic roller bars, perforated bricks and a heat insulation sealing plate, the kiln body comprises kiln walls on the left side and the right side, and the transmission platform is erected on the kiln walls on the left side and the right side; the perforated brick is arranged in the middle of the kiln wall and used for erecting the ceramic roller, the heat insulation sealing plate is arranged on the outer side of the perforated brick, the ceramic roller penetrates through the heat insulation sealing plate and is rotatably arranged on the heat insulation sealing plate, and the heat insulation sealing plate is used for forming a heat insulation layer on the periphery of the perforated brick. The heat insulation sealing plate is arranged on the outer side of the perforated brick, so that a heat insulation layer is formed on the periphery of the perforated brick, the temperature of the outer side of the kiln at the perforated brick is prevented from being high, the distance from the driven end support and the driving end support to the kiln wall can be reduced, the supporting span of the ceramic roller is reduced, and high-temperature load-bearing deformation of the ceramic roller can be improved; and the firing quality of building ceramic products is improved.
Owner:DONGGUAN CITY WONDERFUL CERAMICS IND PARK +1

Graphite sagger preparation method based on secondary isostatic pressing process

The invention discloses a graphite sagger preparation method based on a secondary isostatic pressing process. According to the method, natural crystalline flake graphite and artificial graphite powder are selected as raw materials, coal pitch is selected as a binder, and boron carbide micro powder is selected as a filler. The preparation method comprises the following steps: dry-mixing a graphite raw material, preparing crushed and molten coal pitch and boron carbide into a suspension, and mixing and kneading the coal pitch and the boron carbide into paste; the paste is pre-pressed into a biscuit through a hydraulic machine, the biscuit is sealed in a rubber sheath and then subjected to primary cold isostatic pressing, then primary roasting is carried out, the blank is subjected to vacuum impregnation in a suspension liquid after primary roasting, secondary cold isostatic pressing and secondary roasting treatment are carried out after impregnation is completed, graphitization treatment and cutting shaping are sequentially carried out after roasting, and the finished graphite saggar is obtained. The degree of dependence on equipment is effectively reduced through a secondary isostatic pressing process, so that the prepared graphite saggar has good performance, and the density, bending strength, porosity, thermal shock performance and other indexes of the graphite saggar all meet the specialized operation requirements in the fields of photovoltaics, new energy and the like.
Owner:湖南宏翰新能源科技有限公司

Automatic loading and unloading equipment for dry and wet bulk materials of kiln

The invention discloses automatic loading and unloading equipment for dry and wet bulk materials of a kiln, the automatic loading and unloading equipment comprises a mounting platform and a filter press, a steel structure platform is horizontally and fixedly arranged on the bottom surface of the filter press, and a cache belt conveyor is horizontally and fixedly arranged on the bottom surface of the steel structure platform. The defects caused by manual carrying can be effectively avoided, the service life of the saggar is prolonged, and the production cost is reduced. And in the aspect of production efficiency, full-process automatic loading and unloading operation is realized. All links including filter press discharging, sagger charging, robot stacking, kiln baking, robot unstacking, sagger discharging and sagger conveying are closely connected, manual intervention is not needed, the production period is greatly shortened, and the overall production efficiency is improved. For example, in a traditional mode, the manual loading and unloading speed is low, and the process interruption is easily caused by human errors, however, the equipment can continuously and stably run, and the production continuity is ensured.
Owner:HUNAN YANYAN INTELLIGENT TECH CO LTD

Alumina-zirconia eutectic sintering material and preparation method thereof

The invention relates to an alumina-zirconia eutectic sintering material and a preparation method thereof, and relates to the technical field of high-temperature structural ceramic materials. The preparation method comprises the following steps: dispersing 80-95 parts of aluminum oxide powder, 1-10 parts of zirconium oxide powder and 0.1-1 part of yttrium oxide powder in a solvent, and carrying out wet grinding and drying to obtain mixed powder; and adding 1-3 parts of a binder into the mixed powder, uniformly grinding, drying, carrying out compression molding, and carrying out SPS (spark plasma sintering) treatment to obtain the alumina-zirconia eutectic sintering material. The alumina-zirconia eutectic sintering material is obtained through raw material powder wet grinding, compact preparation and spark plasma sintering. The eutectic sintering material has the characteristics of high strength, high fracture toughness, good creep resistance and the like; the method is simple and easy to operate, green and environment-friendly, low in cost, short in process, high in efficiency and beneficial to industrial large-scale production and popularization.
Owner:ANHUI JINHETAI NEW MATERIALS CO LTD

Double-layer steel division box for firing sample

The utility model discloses a double-layer steel dividing box for burning samples, which particularly belongs to the field of chemical instruments and comprises a storage box, and an auxiliary fixing mechanism is fixedly mounted outside the storage box. By means of the auxiliary fixing mechanism, the partition boxes can be conveniently installed and detached, when the storage boxes need to be installed, the fixing rods are distributed on the two sides of the two storage boxes and inserted into the corresponding inserting grooves, it is ensured that the fixing rods are tightly combined with the inserting grooves, and the fixing rods can be fixed through alignment of the first through holes and the second through holes. The fastening bolts are embedded into the holes and are screwed tightly, it is ensured that the fixing rods and the storage box are firmly fixed, then experimental samples can be placed in the corresponding sample storage grooves, the double-layer steel division box is placed in firing equipment, firing parameters are set according to experimental requirements, a firing experiment is started, the firing condition of the samples is monitored in real time, and after the experiment is finished, the firing equipment can be used for firing the samples. And closing the burning equipment, waiting for cooling of the division box, and taking out the burnt sample for subsequent treatment and analysis.
Owner:CHINA GEOLOGICAL SURVEY MILITARY-CIVILIAN INTEGRATED GEOLOGICAL SURVEY CENT

A well-type tempering furnace for die steel

The utility model discloses a well type tempering furnace for die steel relates to die steel technical field, including the top of the tempering furnace body that is equipped with the opening, the top of the tempering furnace body is equipped with the cover and sets up the furnace cover of tempering furnace in the top of the tempering furnace body, is equipped with the rotary drive mechanism for fixing die steel and driving die steel rotation on the furnace cover of tempering furnace, the utility model discloses being equipped with the fixed jaw, can fix the die steel and hold, is convenient for the fixed die steel, the output shaft of first speed reducer drives one gear rotation, and a plurality of gears are connected through chain drive, make all the gear that sets up rotate synchronously, and the gear drives the rotation of the rotating rod, and the rotating rod drives die steel rotation through fixed plus jaw, can make all the die steel that fixedly holds rotate, can rotate the die steel of inner ring, avoid the uneven heating of inner and outer rings to occur, make all the die steel even heating, improve the heat treatment quality.
Owner:DONGGUAN QUANNA METAL TECHNOLOGY CO LTD