3685 results about "Crucible" patented technology

The invention provides an anti-gravity investment casting device suitable for titanium alloy and a casting method of the anti-gravity investment casting device, belongs to the field of titanium alloy casting, and solves the problems that an existing anti-gravity forming device has a sealing problem and a riser tube cannot be centered with a pouring gate inlet of a mold shell. Wherein the lifting structure can drive the mold assembly to move in the vertical direction, a mold shell in the mold assembly is located in the sand box, the sand box abuts against the top face of the flange sleeve, the flange sleeve is arranged on the mold support in a sliding and penetrating mode, and the upper pressing plate abuts against the upper portion of the sand box and is connected with the mold support. The water-cooled copper crucible is located below the riser tube, a flange structure is arranged at the upper end of the riser tube, the positioning and centering structure is used for enabling a pouring gate inlet of the mold shell and the riser tube to be coaxially arranged, the sealing structure comprises a first sealing ring and a second sealing ring, the first sealing ring is located between the flange sleeve and the flange structure, and the second sealing ring is located between the flange sleeve and the flange structure. The second sealing ring is located between the flange sleeve and the middle partition plate. According to the device, the pouring gate inlet of the mold shell can be centered with the riser tube, and the lower working tank is completely sealed.

The invention relates to the technical field of operation control, in particular to an unattended operation crucible loading and unloading operation control system and method based on visual processing, and the method comprises the following steps: monitoring a static accumulation value in a graphite powder fluidization conveying process in real time through a distributed static sensor; when the static accumulation value exceeds a safety threshold value, pulse type ion wind neutralization treatment is triggered, and a static balance material flow is generated; the dynamic alignment deviation of the stock bin and the crucible opening is calculated; the stepping angle and the rotating speed of a spiral auger in the stock bin are controlled based on the dynamic alignment deviation, and an axial vibration field is synchronously applied in the discharging process; the position of an air gap in a material is predicted based on a convolutional neural network, and a vacuum negative pressure value is dynamically adjusted to form a gradient suction mode. According to the device, the risks of powder agglomeration, conveying pipeline blockage or electrostatic discharge caused by electrostatic accumulation are effectively prevented, the safety of the conveying process is ensured, and meanwhile, the flowing stability of graphite powder is optimized.

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.

The invention belongs to the technical field of vacuum coating, and particularly relates to a vacuum coating machine electron gun control method and system.The control method comprises the steps that in the coating process, key real-time parameters reflecting the working state of an electron gun and the evaporation process are continuously collected and fused, and the current coating state is evaluated in real time based on the key real-time parameters; and in combination with preset coating process requirements, an electron beam control target instruction set of a next control period is dynamically generated through a built-in decision mechanism and is sent to a power controller, a focusing coil controller and a scanning coil controller of the electron gun, and the electron gun is driven to adjust the power output, the focusing state and the scanning motion of the electron gun in real time. Through accurate and stable control of the evaporation rate, material characteristic changes are effectively coped with through a strong closed loop of power and the evaporation rate; the dynamically planned scanning path can actively compensate the non-uniformity of the thermal field of the crucible, and beam spot energy distribution is optimized in combination with focusing adjustment, so that the uniformity of the thermal field is remarkably improved.

The invention discloses a preparation method for preparing a biomass porous carbon material through high-temperature carbonization of molten salt and application of the biomass porous carbon material, and belongs to the technical field of synthesis of inorganic functional materials. According to the technical scheme, the method is characterized in that sodium chloride and potassium chloride are mixed into mixed salt according to different proportions, then the mixed salt is mixed with enteromorpha biomass according to a certain proportion, the mixture is placed in a porcelain crucible, the mixed salt is added for covering, the porcelain crucible is placed in a muffle furnace to be heated and carbonized, and the porous biomass carbon material is obtained after water washing and drying. The enteromorpha biomass is selected as the raw material, the operation is simple and controllable, the cost is low, batch production can be realized, and the prepared novel porous biomass carbon material has a complex porous structure, a large specific surface area, a very good catalytic effect, strong adsorption capacity and good conductivity, and shows excellent performance when being applied to the field of advanced oxidation.

The invention relates to the technical field of nano metal production, and particularly discloses a crucible liquid level height measuring method and a crucible liquid level height measuring device.The crucible liquid level height measuring method comprises the following steps that a cooling jacket is arranged outside a crucible, cooling water is introduced, after the water amount is stable, the crucible and the cooling jacket are weighed through a sensor, and the crucible liquid level height is measured; obtaining a weight value a; equipment works, evaporation of the metal raw materials is reduced, and a real-time weight value c is obtained; and according to the formula, the liquid level remaining height = ((c-a) / liquid metal density) / crucible bottom area, the liquid level remaining height in the crucible is calculated, and the feeding time is judged according to the liquid level remaining height. The crucible liquid level height measuring device comprises a vacuum container, a crucible and a weighing sensor are arranged in the vacuum container, and the crucible is placed above the weighing sensor. The metal powder manufacturing device has the effect of accurately judging the feeding time when metal powder is manufactured.

The invention discloses die steel powder with high corrosion resistance. The die steel powder comprises the following chemical components in percentage by mass: 17.0%-18.5% of Ni, 8.0%-9.5% of Co, 4.5%-5.0% of Mo, 1.8%-2.5% of Cr, 0.4%-0.7% of Cu, 0.06%-0.12% of Y, 0.6%-0.9% of Ti, 0.06%-0.12% of Al and the balance of Fe. The invention further discloses a gas atomization preparation method of the high-corrosion-resistance die steel powder. The gas atomization preparation method comprises the following steps: (1) burdening and charging; (2) vacuumizing and gas replacement; (3) staged smelting: carrying out medium-frequency induction heating on the smelting crucible, raising the temperature to 1650-1720 DEG C at the speed of less than or equal to 10 DEG C / min, and keeping the temperature for 15 minutes after the matrix alloy is molten; adding high-purity elemental metals of Y, Ti and Al elements through a secondary feeding device 5-8 minutes before pouring is started, and realizing uniform diffusion of the elements by matching with argon covering and stirring; (4) argon atomization; and (5) powder post-treatment. According to the powder, the corrosion resistance is greatly improved by reasonably designing the components and the percentage thereof. According to the powder obtained through the gas atomization preparation method, the corrosion resistance is larger than or equal to 700 hours, the oxygen content is smaller than or equal to 50 ppm, the density is larger than 99.8%, and therefore the requirements of high-end optical molds are met.

The utility model relates to the technical field of heating furnaces, in particular to an alloy vacuum furnace which comprises a furnace body and a heating mechanism arranged in the furnace body, the heating mechanism comprises a plurality of annular heating pieces, the annular heating pieces are divided into top heating pieces, bottom heating pieces and a plurality of middle heating pieces, the bottom heating pieces are fixedly connected with the inner wall of the furnace body, and the middle heating pieces are fixedly connected with the furnace body. The top heating piece and the middle heating piece move in the height direction of the furnace body through a vertical adjusting mechanism, the vertical adjusting mechanism comprises a screw rod and a connecting block, the connecting block is fixedly arranged on the periphery of the top heating piece, the screw rod is arranged in the height direction of the furnace body, and the upper end of the screw rod is in threaded connection with the connecting block; the lower end of the screw penetrates through the furnace body and is fixedly connected with an output shaft of a transmission motor arranged at the bottom of the furnace body. According to the alloy vacuum furnace, by adjusting the heating piece, the heating range of the heating piece is matched with the height of alloy contained in the crucible, heat energy of the heating piece is concentrated to heat the alloy, and the heat energy utilization rate is increased.

The invention belongs to the field of synthesis of inorganic non-metallic materials, and particularly relates to an equimolar-ratio seven-element high-entropy oxide and a preparation process thereof. The preparation process comprises the following steps: putting seven oxide powder Al2O3, Y2O3, TiO2, ZrO2, NiO, CuO and CeO2 into a ball milling tank according to a molar ratio of 1: 1: 2: 2: 2: 2: 2: 2, adding absolute ethyl alcohol and zirconium oxide grinding balls, performing ball milling in a ball mill, and fully drying and sieving after ball milling to obtain mixed powder; carrying out tabletting treatment on the mixed powder to obtain a to-be-sintered green body; and putting the to-be-sintered green body into an alumina crucible, and putting the alumina crucible into a microwave oven for microwave sintering. According to the method, the equimolar-ratio seven-element high-entropy oxide (AlYTiZrNiCuCe) Ox with good solid solution is obtained, the crystallinity and element uniformity of the seven-element high-entropy oxide are improved, all the raw materials react completely, meanwhile, the process efficiency is high, and energy consumption is low.

The invention relates to the technical field of high-temperature alloy preparation, and discloses a method for preparing nitrogen-containing cobalt-chromium-molybdenum alloy by a two-chamber vacuum induction furnace, which comprises the following specific steps: step 1, preparing materials according to components of the nitrogen-containing cobalt-chromium-molybdenum alloy; step 2, sequentially arranging a Si layer, a Mo layer, an N layer, a Cr layer and a Co layer from the bottom of the crucible to the top; and step 3, vacuum melting: S1, vacuumizing treatment; then filling nitrogen; s2, heating and melting, wherein the power of a smelting chamber is set to be 340-360 KW; the power of the smelting chamber is set to be 180-200 KW, and heat preservation refining is carried out; s3, power failure and standing; s4, electrifying again, and adding Mn into the molten steel when the power of the smelting chamber is increased to 300KW; and 4, pouring is conducted, specifically, pouring is started when the temperature of the molten steel rises to 1520-1530 DEG C. The nitrogen-containing cobalt-chromium-molybdenum alloy which is smooth in surface and free of pores inside can be prepared.

The invention provides a combined crucible and an oxide crystal growth method.The combined crucible is used for oxide crystal growth and comprises a first ceramic crucible, a second ceramic crucible, a third ceramic crucible and a fourth ceramic crucible, the graphite layer is arranged in the first ceramic crucible; the second ceramic crucible comprises a second containing space with the top open and the bottom closed, and the second ceramic crucible is arranged in the graphite layer. The combined crucible is designed by adopting an iridium-free scheme, so that the cost of the crucible can be greatly reduced.

The invention provides a crystal growth device and a crystal growth method for separating crystals from melts, and solves the defect that polycrystals are easy to generate during crystal growth at present. The growth device comprises a heat preservation furnace, a heater, a crystal growth crucible, a lining crucible, a lifting mechanism, a ceramic lifting seat, pressing graphite, a heat conduction graphite ring and a heat preservation ring, the crystal growth crucible is coaxially arranged in the heat preservation furnace; the heater is coaxially arranged between the crystal growth crucible and the holding furnace; the lining crucible is coaxially arranged in the crystal growth crucible and comprises a crucible bottom plate, a melt transmission channel and a crucible main body which are coaxial and communicated from bottom to top; in order to reduce the influence of the melt on the crystal in the growth process, the crystal and the melt are physically separated, the growth device with the two crucibles is designed, and in consideration of the importance of stable crystal growth thermal field environment, heat transfer of the two crucibles is isolated through the heat preservation ring; the heat-conducting graphite is used for uniformizing the temperature of the center and the edge of the melt, and concave liquid surfaces are avoided.

The utility model discloses a thermal field structure for X-cut lithium niobate crystal growth, the X-axis is defined to extend upwards, the thermal field structure comprises a thermal insulation structure and a crucible, both the thermal insulation structure and the crucible are elliptical cylinders with open upper ends and closed lower ends, when the thermal field structure is used, the crucible is placed in the thermal insulation structure, the central axes of the crucible and the thermal insulation structure coincide, and the central axes of the crucible and the thermal insulation structure coincide. The heat preservation structure is provided with a long axis a1 and a short axis b1, the crucible is provided with a long axis a2 and a short axis b2, the long axis of the heat preservation structure and the long axis of the crucible both extend in the Y-axis direction, the short axis of the heat preservation structure and the short axis of the crucible both extend in the Z-axis direction, and the grown lithium niobate crystal is an elliptic cylinder. According to the utility model, the problem that the crystal is easy to crack in the prior art is solved, and the success rate of the growth of the X-axis lithium niobate crystal is improved.

The invention relates to the technical field of rare earth metal hydrometallurgy, in particular to a rare earth molten salt electrolysis truss type multifunctional metal output system and a control method.The system comprises a main body supporting and moving frame, an integrated function execution module set, a bottom cleaning function module, an electrolytic bath station unit and an intelligent control system; wherein the integrated function execution module group, the bottom cleaning function module, the electrolytic tank station unit and the intelligent control system are respectively arranged in the main body support and motion frame, and the main body support and motion frame is arranged in a gantry truss structure; the four functions of pot lifting, casting, cooling and bottom cleaning in rare earth electrolysis are integrated on the integrated bearing platform of the same gantry truss type rack, and through multi-sensing information fusion and intelligent control, the system can automatically complete the whole process operation of crucible extraction, molten metal casting, cooling forming and electrolytic bath bottom cleaning; and the exposure of workers in high-temperature and high-risk environments is obviously reduced, and the production safety and efficiency are improved.

The invention relates to a titanium alloy component preparation method and device and a flow guide pipe radius confirmation method, and relates to the technical field of negative pressure suction casting. The titanium alloy component preparation method comprises the steps that raw materials are smelted in stages based on the preset smelting power P1 of the raw materials till the heating temperature reaches the preset pouring temperature T, carrying out heat preservation on the smelted raw materials; based on the smelting power P2 of the blocking piece, the blocking piece is smelted in a staged mode till the blocking piece is completely smelted within a preset time period; and negative pressure is applied to a mold, and negative pressure mold filling is conducted on the mold through the molten blocking piece material and the molten raw materials. By adopting the technical scheme, the technical problems of long mold filling time and serious heat loss existing in an existing casting mode of combining smelting and crucible tilting weighting can be solved.

The present invention relates to a crucible forming device and a crucible forming method, and relates to the technical field of metal smelting. The main technical solution adopted is as follows: a crucible forming device is used to prepare a formed layer covering the outer wall of the crucible body outside the crucible body so that the crucible is adapted to the heating coil of the smelting equipment; wherein, the crucible forming device includes a mold; the mold is provided with a mold cavity for accommodating the crucible body; wherein, when the crucible body is placed in the mold cavity, a set gap for filling the forming material is left between the cavity wall of the mold cavity and the crucible body; wherein, after heating the mold containing the crucible body and the forming material, the crucible with the formed layer is obtained by demolding. The present invention is mainly used to shorten the time for replacing the crucible on the smelting equipment and improve the production efficiency of metal materials.

The invention provides a preparation method of a MoTe2 single crystal. The preparation method comprises the following steps: A, weighing molybdenum powder, tellurium powder and cobalt powder according to a stoichiometric ratio; b, the powder weighed in the step A is poured into a glass beaker, convective mixing is achieved under the action of a stirrer, and the duration time is 20-30 minutes; c, pouring the powder ground in the step B into a crucible, and sealing; d, putting the crucible in the step C into a glass tube; e, covering the glass tube in the step D with a glass cap; f, vacuumizing the glass tube by using a vacuum pump set, then filling argon, repeating the gas washing process for three times, and then vacuumizing again; g, aligning the middle position of the glass cap, heating to melt the tube wall of the glass tube and the glass cap together, and completing vacuum sealing; and H, putting the glass tube in the step G into a box-type furnace, sintering, taking out, putting into a water bucket, and quenching to obtain a single crystal sample.

The invention discloses a method for preparing an ultrahigh-temperature ceramic coating by an ultrahigh-temperature metal gas source based on a molten salt medium, which comprises the following steps of: mixing low-melting-point salt A, metal fluoride and metal M to obtain a mixture C, putting the mixture C into a first crucible, mixing low-melting-point salt B and metal M to obtain a mixture D, putting the mixture D into a second crucible, putting a carbon base material into a deposition furnace, and performing vacuum drying to obtain the ultrahigh-temperature ceramic coating. Heating the first crucible to melt the mixture C to obtain a melt E, and heating the second crucible to melt the mixture D to obtain a melt F; carrier gas is guided into the first crucible, the carrier gas flow passes through the melt E to form gas flow containing a metal gas source, the gas flow containing the metal gas source is guided into the second crucible, and the gas flow containing the metal gas source is filtered by the melt F in the second crucible to form a pure metal reaction gas source, and finally, a pure metal reaction gas source is introduced into the deposition furnace for deposition of the carbon base material, and the ultra-high-temperature ceramic coating is obtained. The method is easy to operate and low in cost.

The invention relates to the technical field of crucible dust collection, in particular to a dust collection structure for a neodymium iron boron sheet crucible slag removal procedure, which comprises a dust collection pipe, the upper part of the dust collection pipe is tubular, the lower part of the dust collection pipe is conical, and two spraying units which are symmetrically arranged left and right are arranged on the conical structure of the dust collection pipe; the rotatable water pipe is adopted to drive the spray pipes distributed in the circumferential direction to rotate synchronously, cooling water mist is continuously sprayed into the dust suction pipe through the two atomization nozzles on the spray pipes, active cooling is achieved, and the service life of equipment is prolonged; the rotating cylinder is adopted to drive the vortex-line-shaped pushing plate to rotate, raised dust is pushed outwards in the radial direction of the dust suction pipe through the outwards-protruding arc-shaped face of the pushing plate, dust is forced to be close to a spraying area quickly, the mixing efficiency of the raised dust and water mist is remarkably improved, the cooling effect is improved, and the dust removal efficiency is improved.

The invention discloses a crystal growth device and a crystal growth method for gallium oxide crystal downward growth, and belongs to the technical field of gallium oxide single crystal preparation. The device comprises a crucible, an upper shaft, a heating mechanism and a heat preservation mechanism, the crucible is composed of a metal layer and an isolation layer arranged on the inner side wall of the metal layer, an opening is formed in the top of the metal layer, the thermal expansion coefficient of the side, away from the metal layer, of the isolation layer ranges from 0.5 * 10 <-6 > k <-1 > to 2.5 * 10 <-6 > k <-1 >, and the thermal expansion coefficient of the isolation layer is gradually increased outwards from the side, away from the metal layer, of the isolation layer. The rising rate is 2 * 10 <-6 >-3 * 10 <-6 > k <-1 > / mm; the upper shaft is arranged above an opening of the crucible and can lift and rotate relative to the crucible, a seed crystal support is arranged below the upper shaft, a first cooling pipeline is arranged in the upper shaft, and a second cooling pipeline is arranged in the seed crystal support. The crystal growth device breaks through the limitation of a traditional Czochralski method, a casting method and a Bridgman method, realizes downward growth of crystals, and can reduce the influence of crucible metal impurities on the crystals, so that gallium oxide single crystals with high quality, large size and high yield are obtained.

The invention relates to the technical field of semiconductor material growth, and aims to solve the technical problems that the service life of a heating element is shortened due to single atmosphere sharing, the quality is difficult to guarantee due to many crystal defects, the single crystal production cost is high, and the production efficiency is low in the prior art. The invention discloses a single crystal growth device which is characterized by comprising a furnace body, a first chamber, a second chamber, a heating assembly, a growth assembly, an atmosphere isolation and heat conduction assembly, an atmosphere management system and a central control system, the atmosphere isolation and heat conduction assembly is used for separating the furnace body into a first cavity and a second cavity which are isolated in an airtight mode, and efficient heat transfer is achieved. By the adoption of the scheme, atmosphere structure separation and combined crucible design can be achieved, high quality and high purity of crystals are guaranteed, meanwhile, the service life of a heating element is effectively prolonged, and the operation cost is remarkably reduced.

The invention discloses a method for preparing 6N-grade high-purity zinc through twice vacuum distillation based on a uniform temperature field. The method comprises the following steps: pretreatment; first-stage distillation: putting the zinc ingot subjected to vacuum drying into a crucible of a vacuum distillation furnace, mounting a plurality of stages of condensation collecting trays on the top of the crucible in an overlapping manner, and then performing high-vacuum pumping, heating and heat preservation; second-stage distillation: after the heat preservation of the first-stage distillation is finished, heating and heat preservation are continued under high vacuum; a plurality of samples are respectively obtained from the multistage condensation collecting disc, and the samples with the zinc content not lower than 99.9999% are collected, namely the 6N-grade high-purity zinc product. According to the method, zinc ingots with the purity of 99.99%-99.995% are used as raw materials, a conventional vacuum distillation furnace is used as distillation equipment, multiple stages of condensation collecting plates are mounted on the top of a crucible in an up-and-down overlapping manner, a novel two-stage distillation process is developed in a matched manner, key parameters such as the vacuum degree, the heating temperature, the heating rate and the heat preservation time are accurately controlled, and the high-purity zinc ingot is obtained. And a 6N-grade high-purity zinc product is successfully prepared.

The invention provides a metal continuous casting device, and relates to the field of metal casting. The metal continuous casting device comprises a hot melting unit, a feeding unit is arranged above the hot melting unit, a heat preservation unit is arranged below the hot melting unit, a vibration crystallizer is arranged below the heat preservation unit, and a dummy ingot sealing unit is arranged at the outlet end of the vibration crystallizer. The vacuum pumping unit is communicated with the hot melting unit, the feeding unit and the heat preservation unit, the hot melting unit comprises a smelting cavity and a smelting crucible fixedly installed in the smelting cavity, the center of the bottom end of the smelting crucible is open and communicated with the heat preservation unit through a long nozzle, and a first stopper mechanism is fixedly installed above the smelting cavity. According to the metal continuous casting device, the smelting crucible is arranged in the smelting cavity, and the flowing of molten copper is controlled through the first stopper rod mechanism, so that a structure for driving the smelting crucible to feed can be reduced, feeding can be controlled more conveniently, and meanwhile, the device can be kept in a vacuum state conveniently.

The invention provides a gas phase transportation optimization device based on a PVT method. The device comprises a crucible, the interior of the crucible is used for containing raw materials to form a raw material area, seed crystals are arranged at the top of the crucible, and a heater is arranged on the periphery of the crucible; the at least one stage of conveying mechanism is arranged in the crucible, and the multiple stages of conveying mechanisms are arranged at intervals in the radial direction of the crucible; wherein each stage of conveying mechanism extends from the bottom of the crucible to the top of the crucible, a conveying channel is formed in each conveying mechanism, and the conveying channels are used for promoting gas-phase substances formed by sublimation of raw materials to be conveyed from the raw material area to the surface of the raw material area; and the extension terminal, close to the top of the crucible, of the conveying mechanism is located above the surface of the raw material area, so that the gas-phase substances are promoted to escape from the surface of the raw material area through the conveying channel. According to the device provided by the invention, the problems that gas-phase substances are difficult to transport in a raw material area in the single crystal growth process by a traditional PVT method, and meanwhile, the gas-phase substances are recrystallized on the surface of the raw material area, so that self-escape is hindered are solved.

The embodiment of the invention provides a silicon carbide powder synthesis method and device, and relates to the technical field of silicon carbide powder synthesis. The silicon carbide powder synthesis method can be applied to the silicon carbide powder synthesis device. In the process of synthesizing the silicon carbide powder, the raw material powder and the silicon crystal raw material are contained in the crucible, the silicon crystal raw material comprises a plurality of silicon rods, the silicon rods are arranged at intervals, and the silicon rods are contained in the raw material powder. In the synthesis process of the silicon carbide powder, when the temperature in the crucible is increased to a certain temperature, silicon rods start to melt and diffuse into carbon powder, the carbon powder and silicon melt can be mutually permeated to form a large silicon-carbon mixture, then the silicon carbide powder can be generated through reaction at high temperature, each silicon rod can form a nucleation point of the silicon-carbon mixture, and the silicon carbide powder can be formed through the nucleation point of the silicon-carbon mixture. And thus, the yield of the large-size silicon carbide powder can be improved.

The invention belongs to the field of functional material preparation, and particularly relates to a preparation method of a silicon-yttrium-carbon composite lithium ion battery negative electrode material, which comprises the following steps: (1) dispersing silicon nanoparticles, polyvinylpyrrolidone and yttrium salt in a deionized water solution to form a mixed solution, carrying out ultrasonic vibration dispersion, and then carrying out magnetic stirring in a room temperature air atmosphere; (2) transferring the obtained solution to a glass culture dish, and performing freeze drying in a freeze dryer; (3) transferring the precursor obtained by drying into a crucible, and placing the crucible in a tubular furnace for high-temperature calcination to obtain a silicon-yttrium-carbon composite material; and (4) grinding and mixing the obtained product with sodium alginate, conductive carbon black and deionized water respectively, uniformly coating the surface of a copper foil with the mixture, and then performing drying, slicing and tabletting treatment to obtain a target product. The preparation method is simple in synthesis process, good in electrode cycling stability, stable in structure and excellent in electrochemical performance.

The utility model relates to a crucible lifting and fixing device and crucible transferring equipment and relates to the technical field of silicon carbide growth, the crucible lifting and fixing device comprises a lifting support, a driving assembly, a sliding rod and two positioning supporting pieces, the lifting support serves as an integral supporting frame body, and the driving assembly is arranged on the lifting support; the sliding rod is arranged on the lifting support and located on the bottom side of the driving assembly. The two positioning supporting pieces are arranged on the sliding rod in a sliding mode and are in transmission connection with the driving assembly. Wherein the two positioning supporting pieces are configured to be far away from each other or close to each other under the driving of the driving assembly so as to be positioned and clamped on the inner wall of the outer crucible or be separated from the outer crucible. Compared with the prior art, the crucible lifting and fixing device provided by the utility model has the advantages that the outer crucible hole position can be automatically clamped, the problem of clamping caused by screwing and unscrewing of a conventional bolt buckle is avoided, and time and labor are saved.

The invention discloses a crucible furnace with energy-saving, heat energy recovery and fuel gas dumping functions, and relates to the technical field of metal smelting, the crucible furnace comprises a crucible body, a furnace body, a support frame and a heat energy recovery assembly, the crucible body is fixedly connected with the furnace body, the furnace body is rotatably and cooperatively connected with the support frame, and the heat energy recovery assembly comprises an air blower, a gas guide pipe, a water storage cylinder and a heat insulation cylinder; the water storage barrel is arranged in the heat insulation barrel, the air guide pipe is wound on the outer side of the water storage barrel, one end of the air guide pipe and the output end of the air blower are both communicated with the hearth, and the other end of the air guide pipe is communicated with the input end of the air blower. A large amount of heat is transferred to cold water in the water storage cylinder in a heat conduction mode, and waste heat is converted into hot water to be stored. The part of hot water can be used in other production links, such as preheating raw materials, cleaning equipment and the like, or can be used as domestic hot water, so that secondary utilization of energy is realized, and consumption of extra energy is greatly reduced.

The invention relates to the technical field of precise cleaning and regeneration, and discloses an aluminum nitride crucible cleaning and regeneration process for a MicroOLED evaporation source, which comprises the steps of organic soaking, primary pure water soaking, physical film removal, water washing, primary drying, high-temperature baking, acid pickling, secondary pure water soaking, ultrasonic cleaning, secondary drying, detection, drying, cooling and vacuum packaging. According to the cleaning and regeneration technology for the aluminum nitride crucible for the MicroOLED evaporation source, multiple cleaning modes are combined, organic matter on the surface and in the aluminum nitride crucible can be effectively dissolved, compared with traditional soaking with a single organic solvent, the removal effect on stubborn stains is better, organic residues and permeation residues are avoided, and the service life of the aluminum nitride crucible is prolonged. The crucible can be safely mixed for use in subsequent use through the thorough cleaning process, cross contamination is effectively avoided, product flaws caused by incomplete cleaning of the crucible are reduced, the product yield is further improved, the high product yield means lower production cost and higher market competitiveness, and remarkable economic benefits are brought to enterprises.

The invention discloses a heating assembly for a fused quartz furnace, and belongs to the technical field of heating, the heating assembly comprises a furnace body, a fixed seat is arranged on the bottom side in the furnace body, the heating assembly also comprises two hydraulic push rods which are distributed at the bottom of the fixed seat in a circumferential array, and the bottoms of the hydraulic push rods are fixedly connected with the inner wall of the furnace body. According to the invention, the heating block and the heat conduction block are inserted and mounted along the limiting sliding groove, the use positions of the limiting sliding block, the heating block and the heat conduction block are limited through the limiting sliding groove, and the furnace cover can limit and fix the top of the heating block, so that the hydraulic push rod drives the fixed seat to move upwards, and the heat conduction block enters the heating block; the use height between the heating block and the heat conduction block is adjusted to meet the heating requirements of different crucible heights, so that the different heating requirements of the equipment in the use process are guaranteed, a heat source is effectively focused, energy loss is reduced, and the applicability and the energy efficiency level of the equipment are remarkably improved.