232 results about "Quartz crucible" patented technology

The invention discloses a global scanning image splicing and defect positioning system for an ultra-large-diameter quartz crucible, and relates to the technical field of quartz crucibles, and the system comprises a scanning control module which constructs a fusion model through multiple sensors, evaluates a risk coefficient, obtains the fusion model, dynamically plans a multi-arm path of a robot based on reinforcement learning, and sends the multi-arm path of the robot; adaptively adjusting the acquisition frequency of the corresponding area based on the risk coefficient, and outputting multi-modal data through a multi-round feedback iteration optimization acquisition process; the image splicing module is used for acquiring multi-modal data for local splicing, and generating a panoramic image in combination with a multi-arm path of the robot; the defect positioning module is used for constructing a quartz crucible model through the panoramic image, detecting defects in a layered manner by utilizing a YOLOv5 model, tracking the defects through extended state Kalman filtering, quantifying the defect volume and the hazard level by combining point cloud semantic segmentation, and performing 3D positioning and evaluation on the defects; the output data is ensured to always meet the subsequent image splicing and defect positioning requirements, and the system stability is guaranteed.

The invention provides a corrosion-resistant and high-temperature-resistant composite quartz crucible and a preparation method thereof. The quartz crucible sequentially comprises the following laminated layers in parts by weight from inside to outside: 50-100 parts of an inner layer, 200-400 parts of a transition layer, 150-250 parts of a reinforcing layer and 40-80 parts of an outer layer, the preparation method comprises the following steps: forming layer by layer: sequentially adding inner-layer slurry, transition-layer powder, a reinforcement-layer prefabricated member and outer-layer slurry into a mold for forming; gradient drying is conducted, specifically, the formed crucible blank is put into a drying box to be subjected to gradient drying; and step-by-step sintering: putting the dried crucible blank into a high-temperature sintering furnace, carrying out step-by-step sintering, and cooling and demolding to obtain a crucible product. A composite protection system is designed and constructed through four layers of functionally graded materials, the prepared composite quartz crucible has excellent high temperature resistance, corrosion resistance and structural stability and can be applied to large-size semiconductor single crystal furnaces, and the engineering advantage of the preparation process is remarkable.

The invention provides a quartz crucible crushing device and method.The quartz crucible crushing device comprises a vibration platform, a clamping assembly and a knocking assembly, the vibration platform is used for placing a carbon-carbon crucible with a quartz crucible, the outer side wall of the carbon-carbon crucible is placed on the vibration platform, and the clamping assembly is used for clamping the carbon-carbon crucible; the clamping assemblies are oppositely arranged on the two sides of the vibration platform and used for clamping the carbon-carbon crucible, and the knocking assembly is arranged on the side, not provided with the clamping assemblies, of the vibration platform, can move along the inner side wall of the quartz crucible and is used for knocking the inner side wall of the quartz crucible. The automatic crushing device has the beneficial effects that automatic crushing of the quartz crucible is achieved in a knocking and vibrating mode, the crushing effect is guaranteed, the working intensity is reduced, potential safety hazards are reduced, the working efficiency is improved, damage to the carbon-carbon crucible is reduced, and the service life of the carbon-carbon crucible is prolonged.

The utility model discloses angle-adjustable quartz crucible cleaning equipment which comprises a rack body, a first cavity and a second cavity located below the first cavity are formed in the rack body, a mounting plate is arranged in the first cavity, and a quartz crucible bracket is hinged to the mounting plate; a quartz crucible is fixed on the quartz crucible bracket, and an adjusting mechanism for adjusting the horizontal angle of the quartz crucible bracket is arranged in the second cavity. Compared with the prior art, workers do not need to watch beside the quartz crucible, operators do not need to manually discharge corrosion liquid medicine filled with the quartz crucible, the cleaning time is set and controlled by the central controller to be automatically completed, a large amount of labor is saved, and meanwhile casualties are avoided.

The utility model belongs to the technical field of crucibles, and particularly relates to a perovskite evaporation source crucible assembly which comprises a quartz crucible with an opening at one end, at least one heat conduction piece arranged in the quartz crucible and a filtering piece arranged in the quartz crucible and located above the heat conduction piece. And the filtering piece covers the upper opening of the quartz crucible. According to the utility model, through the arrangement of the honeycomb-shaped heat conduction member and the filtering member, the original perovskite raw material is easier to volatilize, the loss of heating power is reduced, the time for stabilizing the deposition rate is shortened, and the large-scale mass production is facilitated; the filter screen is additionally arranged, so that raw materials are more conveniently prevented from splashing to pollute other raw materials, large blasting-boiling particles can be filtered out and splashed to a substrate in the evaporation process, a film layer grows finer and smoother, the quality is better, and defects caused to the film layer are avoided.

The invention belongs to the technical field of high-temperature-resistant containers, and provides a quartz crucible preparation method and a quartz crucible. The preparation method of the quartz crucible comprises the following steps: preparing the matrix; the base body is subjected to heating pretreatment; coating the inner wall of the substrate with a barium solution; sintering to form a barium silicate prefabricated layer on the inner wall of the substrate; and barium carbonate powder is scattered on the barium silicate prefabricated layer to form a barium silicate protective layer. According to the quartz crucible prepared by the quartz crucible preparation method provided by the invention, the barium silicate protective layer in the quartz crucible can effectively prevent a product to be prepared from corroding the quartz crucible.

The invention relates to the technical field of semiconductor material preparation, in particular to a quartz crucible and a preparation method thereof, and a preparation method of a large-size N-type silicon rod. The quartz crucible comprises a quartz crucible body and a doping material dispersed in the quartz crucible body. According to the quartz crucible, the doping material is directly and uniformly dispersed in the base material of the quartz crucible body, so that the doping agent is continuously, controllably and uniformly released in the high-temperature silicon melting process.

The invention relates to the technical field of image visual angle analysis, and particularly discloses a quartz crucible bubble group multi-visual angle three-dimensional reconstruction and dynamic analysis system, which is characterized in that an optical imaging device and a sound wave transmission imaging device are arranged outside a quartz crucible, and boundary contour data and bubble internal structure data of bubbles in the crucible are sequentially acquired; further constructing a three-dimensional model of bubbles in the quartz crucible, separating and identifying the bubbles, and obtaining key feature information of each bubble; in a time sequence of continuous acquisition and modeling, the growth rate of each bubble is calculated in real time, and the aggregation behavior and the fracture sign of a bubble group are monitored; by setting the abnormal judgment threshold and predicting and early warning the potential risk in the bubble group, the effectiveness of the data is remarkably improved, and the monitoring means of the bubble behavior is innovated, so that the production process is optimized, the material quality is improved, and the potential safety hazard and economic loss caused by the bubble defect can be remarkably reduced.

This invention provides an electrode device having a support for engaging and holding a graphite electrode used in the manufacture of a quartz crucible via arc discharge. The electrode device is characterized in that the outermost surface layer of the support, at the portion adjacent to the graphite electrode when the support is engaged with the graphite electrode, has an anti-fouling film. Thus, an electrode device is provided that can suppress contamination from the support, shorten the lifespan of the graphite electrode, and reduce manufacturing costs.

The invention provides a czochralski method monocrystalline silicon preparation method and a matched growth system. According to the Czochralski method monocrystalline silicon preparation method, a stabilization treatment step is executed after material melting is finished, the stabilization treatment step comprises a magnetic field closing stage and a magnetic field opening stage, and the lifting movement tracks of a quartz crucible in the two stages are the same and the rotation directions are opposite. According to the technical scheme, two-stage stabilization treatment of closing and opening of the magnetic field is set after material melting, and preferably, the lifting track, the total displacement and the rotation rate of the quartz crucible in the two stages are consistent in rate and movement and are opposite in direction, so that impact and scouring on the quartz crucible are reduced, high-temperature softening deformation is relieved, and chemical reaction of molten silicon and the crucible is inhibited; and the crucible loss is delayed.

The application discloses a heat treatment device for high-concentration magnesium-doped lithium tantalate single crystal growth, and relates to the field of high-concentration magnesium-doped lithium tantalate single crystal growth. The heat treatment device comprises a base, a tank body is arranged at the bottom of the base, a quartz crucible is arranged in the tank body, a circular ring plate is arranged at the top of the quartz crucible, a sliding groove is arranged on the inner wall of the circular ring plate, a wedge-shaped block is arranged in the sliding groove, a ring-shaped block plate is arranged at the tail end of the wedge-shaped block, a second threaded ring is fixed to the top inside the circular ring plate, the second gear drives the first threaded ring to rotate, the first threaded ring drives the second threaded ring to move downwards, the second threaded ring drives the circular ring plate to move downwards, the bottom of the circular ring plate extrudes the liquid after high-temperature dissolution in the quartz crucible, and the steam pocket in the liquid is extruded out.

The invention belongs to the technical field of quartz crucibles, and particularly relates to a microbubble characterization method for a transparent layer of a quartz crucible. According to the method, a seventh sample is obtained through cutting sampling, precise linear cutting separation of a bubble layer and a transparent layer, coarse grinding thinning, accurate grinding, chemical mechanical polishing and multi-step cleaning; the seventh sample is subjected to haze testing, haze data of the transparent layer of the quartz crucible is obtained, the bubble number and grade classification of the transparent layer of the quartz crucible are obtained according to the haze data of the transparent layer of the quartz crucible and a corresponding model, and the corresponding model is a model corresponding to the haze of the transparent layer of the quartz crucible and the number of microbubbles. The method provided by the invention is high in data objectivity, simple in operation process, high in detection efficiency and low in equipment cost; meanwhile, the scattering capacity of bubbles to light can be directly quantified, the correlation with optical interference in actual use is tighter, and microscope counting only reflects the number and cannot directly correspond to the function influence.

The utility model discloses a quartz crucible forming device which comprises a base, a guide rod is fixedly connected to the upper surface of the base, a top plate is fixedly connected to the upper surface of the guide rod, an air cylinder is fixedly connected to the upper surface of the top plate, and a telescopic rod is arranged at the output end of the air cylinder. By arranging a motor, a lead screw and a sliding block, the lower mold can be driven to move outwards, so that a worker is prevented from stretching hands into equipment to perform feeding and demolding operation, potential safety hazards are reduced, and by arranging a first threaded hole, a bolt, a sliding strip and a second threaded hole, the mold plate and the upper mold can be integrally replaced; and by arranging a pressing rod, a triangular block, a sliding column, a limiting plate, a spring and a disc, the crucible can be ejected out after being formed, so that the demolding efficiency is improved, the ejection structure is in a disc shape, the contact area between the ejection structure and the crucible is large, and therefore the situation that the crucible is damaged can be reduced.

The invention provides a judgment method and application of high-purity quartz sand for preparing a low-bubble photovoltaic quartz crucible, and the judgment method comprises the following steps: detecting attribute indexes of the high-purity quartz sand, including chemical components, tap density and gas-liquid inclusion content; calculating the detected attribute index of the high-purity quartz sand according to a calculation formula to obtain a bubble content index; the impurity element content and bubble content indexes in the high-purity quartz sand are graded, and the high-purity quartz sand is comprehensively judged according to the impurity element content grade and the bubble content index grade. Reliable and quantifiable raw material screening standards are provided for the quartz crucible manufacturing industry, inferior quartz sand can be accurately screened out, the product yield of the low-bubble photovoltaic quartz crucible can be remarkably increased, the service life of the low-bubble photovoltaic quartz crucible can be remarkably prolonged through application and popularization of the low-bubble photovoltaic quartz crucible, the stability and safety of a downstream monocrystalline silicon drawing process are effectively guaranteed, and the production cost is reduced. The method is of great significance in promoting cost reduction, efficiency improvement and high-quality development of a photovoltaic industry chain.

The invention discloses a preparation method and device of a lithium ion battery silicon-based negative electrode precursor silicon material. The method is carried out in a polycrystalline silicon ingot furnace with a modified heating and heat insulation system. In the heating and heat insulation system, a plurality of quartz crucibles with the same size are uniformly arranged on a heat exchange table to replace original standard large-size quartz crucibles, the adjacent quartz crucibles are separated by heat insulation plates which are not lower than the tops of the quartz crucibles, and water-cooling cold plates are embedded in the upper surface of a heat insulation bottom plate to serve as active cooling units; the preparation method comprises the following steps: (1) charging and vacuumizing; (2) melting and homogenizing; (3) directional solidification: when the temperature of the silicon material is reduced to the initial solidification temperature of 1410-1420 DEG C, starting an active cooling unit, and introducing cooling liquid into a cooling flow channel in a water-cooling cold plate; the instantaneous cooling rate in the process of controlling the temperature of the solid-phase silicon material to be reduced from 1410-1420 DEG C to 1240-1250 DEG C is maintained at 3.5-5.5 DEG C / min; finally solidifying the silicon material into a silicon ingot; (4) annealing; and (5) cooling.

The invention relates to the technical field of photovoltaic material manufacturing, in particular to a quartz crucible manufacturing system and method.The system comprises forming equipment arranged in a first closed space and melting equipment arranged in a second closed space, and a discharging port of the forming equipment communicates with a feeding port of the melting equipment; the first air inlet device is communicated with the first closed space, an air inlet of the first air inlet device is lower than a mold forming position in the forming equipment, and the air inlet angle of the first air inlet device is larger than the included angle between an inclined plane formed by the mold forming position and the air inlet and the horizontal plane. The system and method provided by the invention can significantly reduce the impurity ion content of the quartz crucible, improve the purity of the transparent layer and prolong the service life of the transparent layer.

The utility model discloses full-automatic weighing and sand separating equipment, which belongs to the technical field of quartz crucible production and comprises a sand separating and weighing roller line, and the upstream of the sand separating and weighing roller line is respectively connected with a large barrel feeding roller line and a feeding box feeding roller line. A large barrel discharging roller line and a discharging buffering roller line are connected to the downstream of the sand separating and weighing roller line, a material barrel is supported on the large barrel feeding roller line, a material box is supported on the feeding box feeding roller line, the material barrel enters the sand separating and weighing roller line through the large barrel feeding roller line, and the material box enters the sand separating and weighing roller line through the feeding roller line. The sand separating and weighing roller line is used for controlling the material barrel to enter the large barrel discharging roller line after quartz sand in the material barrel is accurately separated into a plurality of material boxes; and the sand separating and weighing roller line controls the material box to enter the discharging buffer storage roller line after accurate quartz sand is separated into the material box.

The embodiment of the application provides a preparation method of a fluid inclusion microthermometric ore slice, comprising the following steps: providing a fluid inclusion slice which has been observed and circled under an optical microscope in detail for microthermometric target fluid inclusion position; putting the whole fluid inclusion slice into a glass culture dish, injecting a slice adhesive dissolving solution into the culture dish, and immersing the whole fluid inclusion slice in the slice adhesive dissolving solution to dissolve the slice adhesive and separate the fluid inclusion ore slice from the bonding surface of the glass slide; after the separation, placing the fluid inclusion ore slice with the adhesive surface upward on the surface of the glass slide and immersing it in the slice adhesive dissolving solution; after the slice adhesive on the surface of the fluid inclusion ore slice is completely dissolved, cutting the fluid inclusion ore slice according to the position of the target inclusion to be measured and thermometric, and preparing a rock and mineral fragment containing the target fluid inclusion which is suitable in size to be placed in a cold and hot stage quartz crucible.

The invention discloses a system and method for preparing a low-bubble-density quartz crucible, and belongs to the technical field of crucible production, the system comprises a mold air permeability structure optimization module, a feeding proportion optimization module, an electrode control module and a vacuum control module; a plurality of non-uniformly distributed air vents and a plurality of independent temperature control areas are arranged on the mold air permeability structure optimization module; the feeding proportion optimization module comprises a material storage and distribution device used for achieving gradient particle gradation feeding. The electrode control module comprises a position and angle adjustable electrode group and a pulse current generation unit; the vacuum control module comprises a grading exhaust pipeline with asymmetric pipeline diameters and an intelligent frequency conversion regulation and control unit. The micro-bubble density of the liquid level line area of the upper opening of the crucible is greatly reduced, and the problem that the stability of subsequent crystal bar growth and the crystal quality are affected due to the fact that the bubble density of the liquid level line of the upper opening of the quartz crucible is too high in the prior art is solved.

This invention provides a method for preparing tensile specimens of CoFeNi medium-entropy alloy under deep supercooling conditions. The deep supercooling process of this method is carried out using a high-frequency induction heating device and a combination of melt immersion and cyclic superheating. During the melting process, the alloy raw materials are placed sequentially in a quartz crucible from bottom to top according to their melting points, with glass cleaning agents added to the bottom and top layers. During melting, the vertical movement of the quartz crucible along the central axis of the high-frequency induction coil and the heating temperature of the high-frequency induction coil are controlled to sequentially melt and coat the alloy surface with the glass cleaning agent, melt the Ni metal raw material, and melt the remaining metal raw materials. After the alloy liquid is thoroughly mixed, it is cooled and solidified. This heating and cooling solidification process is repeated until a supercooling of 205K is achieved, producing a CoFeNi medium-entropy alloy ingot that meets the dimensions required for tensile testing. This invention features an easily controllable solidification process, mature technology, and minimal component loss.

The invention relates to the technical field of quartz crucibles, and discloses a sintering furnace for quartz crucible preparation, the sintering furnace comprises an electric arc furnace provided with electrodes and a detection mechanism, the detection mechanism comprises a dual detection assembly and a rotating assembly, the dual detection assembly comprises a mounting box, and a plurality of fixing pipes are fixedly mounted on the mounting box; the protruding block is installed in the fixing pipe in a sliding mode. The arc-shaped cover is mounted in the mounting box in a sliding manner; before the electric arc furnace is used for preparing the quartz crucible, the electrode moves downwards to enter the mounting box to extrude the convex block in the fixed pipe; if the tip of the electrode is intact, the bump completely retracts into the fixed tube, so that the rotating assembly controls the mounting box to move out of the downward moving path of the electrode; and if the tip of the electrode is incomplete and part of the convex block cannot completely retract, a retention path of the mounting box prompts repair, so that concentration or dispersion of arc energy caused by electrode loss difference is avoided, and the defects of bubbles generated by excessive melting of quartz sand and unmelted particles formed by insufficient melting are reduced.

The utility model relates to quartz crucible quality detection equipment, which relates to the technical field of quartz crucibles and comprises a detection platform, a crack detection component and a concave-convex detection component, the crack detection assembly comprises a double-ring sealing ring which is arranged on the upper end surface of the detection platform and is used for coaxially inversely buckling, sealing and fixing the quartz crucible, an exhaust pipe which is positioned in the middle of the double-ring sealing ring and is used for exhausting air in the quartz crucible, and an air pressure detector which is arranged on one side of the double-ring sealing ring and is used for monitoring the air pressure in the quartz crucible; the concave-convex detection assembly comprises an annular sliding rail which is horizontally arranged on the upper end face of the detection platform and is coaxial with the quartz crucible, and an arc-shaped sliding way which rotates relative to the quartz crucible in the surrounding direction of the annular sliding rail and is located on the inner wall of the quartz crucible in the vertical direction with the same radian. The pressure detection module slides along the length direction of the arc-shaped slideway; and the detection probe is connected to the pressure detection module and abuts against the inner wall of the quartz crucible along with rotation. The device has the beneficial effect that the detection result of the quartz crucible is more accurate.

The utility model belongs to the technical field of quartz sand preparation, and particularly relates to a vacuum sintering device. The vacuum sintering device provided by the utility model can provide a vacuum environment for quartz sand preparation, impurities in gas-liquid inclusion can be more effectively removed in a high-temperature vacuum state, the purity of the quartz sand is improved, the vacuum environment has no pollution source, and the quality of the quartz sand can be effectively controlled. Meanwhile, the vacuum environment is beneficial to inhibiting volatilization and diffusion of some impurities and preventing the impurities from entering the quartz sand again; the high-temperature vacuum state is beneficial to removal of hydroxyl in the quartz sand. According to the vacuum sintering device provided by the utility model, quartz sand can be prepared by adopting single equipment, the prepared quartz sand is high in purity which is more than 99.998%, the hydroxyl content is low, the hydroxyl content is less than 1ppm, the granularity is 0.1-0.3 mm, the quartz sand can be used as a raw material of inner-layer sand of a photovoltaic or semiconductor quartz crucible, meanwhile, the production efficiency is improved, and the vacuum sintering device is green and environment-friendly.

The utility model discloses a single crystal furnace with a heat preservation component for producing monocrystalline silicon, which relates to the technical field of single crystal furnaces and comprises a furnace body, a feed hopper communicated with the top of the furnace body, a crucible bracket mounted in an inner cavity of the furnace body, a quartz crucible arranged on the crucible bracket, and a stirring component arranged between the quartz crucible and the bottom wall of the inner cavity of the furnace body. The stirring part comprises two rotating rods, the two rotating rods are rotationally connected to an inner cavity of the quartz crucible, multiple stirring blades are installed on the outer walls of the two rotating rods, a heat conduction layer is arranged on the outer side face of the crucible bracket, a heater is installed on the outer side of the heat conduction layer, and a heat preservation assembly is arranged on the inner wall of the furnace body. The stirring component drives the multiple groups of stirring blades on the two groups of rotating rods to rotate, so that the monocrystalline silicon in the quartz crucible is mixed and stirred, the heating effect on the monocrystalline silicon is improved by matching with the work of the heater, the heat preservation component has a heat preservation effect, heat loss in the single crystal furnace is avoided, and the use effect of the single crystal furnace for producing the monocrystalline silicon is improved.

The utility model relates to a quartz crucible polishing device, which relates to the technical field of quartz crucibles and comprises a polishing platform, a clamping and positioning component arranged at the upper end of the polishing platform and used for fixing a quartz crucible, and a polishing component arranged at the upper end of the polishing platform and positioned on one side of the clamping and positioning component, the grinding assembly comprises a group changing rotating shaft vertically and rotationally arranged on the upper end face of the grinding platform, branch rods horizontally and circumferentially distributed at the top of the group changing rotating shaft at equal intervals, lifting rods vertically and slidably arranged at the ends, away from the group changing rotating shaft, of the branch rods, and grinding heads rotationally arranged at the lower ends of the lifting rods. The multiple grinding heads are different in grinding precision, and the grinding heads are inserted into the inner wall of the quartz crucible and rotate to grind the inner wall of the quartz crucible. The quartz crucible polishing device has the beneficial effects that polishing of various precisions is completed through one device, and therefore the polishing efficiency of a quartz crucible is improved.

The invention relates to the technical field of impurity directional migration and separation, in particular to an impurity directional migration and separation method based on a molten metal silicon self-purification principle, which comprises the following steps of: putting a metal silicon raw material into a special quartz crucible with a zigzag concave-convex inner side wall, heating and vacuumizing to 1-100Pa by using a vacuum melting furnace, and injecting protective gas; when the temperature is raised to 1450-1750 DEG C, introducing specific gas from the bottom to promote the impurities to react and migrate, and keeping the temperature for 1-4 hours; and the crucible is controlled to descend, so that the silicon melt liquid is directionally solidified from bottom to top, the cooling speed is 30-50 DEG C / min, and the descending speed is 0.1-2 mm / min. And taking out the crucible after cooling, and cutting off the top and the adhesive part of the silicon ingot. The problems that in the prior art, directional migration and separation of impurities are difficult, solidification and segregation are difficult to control, crucible guiding is insufficient, and scientific control over slagging constituent matching and using is lacked are solved.

The application relates to a method for preparing high-purity cristobalite sand and / or high-purity fused quartz glass sand by using waste quartz crucible, which comprises the following steps: 1) crushing and first screening the waste quartz crucible; 2) high-temperature roasting the first screening residue to obtain a mixture material in which a surface crystallization layer containing cristobalite sand is separated from fused quartz glass sand; 3) self-grinding and second screening the mixture material; 4) scrubbing the first crude cristobalite sand, removing the third screening residue by wet screening, taking the third screening residue to obtain high-purity cristobalite sand after treatment, and scrubbing the first fused quartz glass sand, removing the fourth screening residue by wet screening, and taking the fourth screening residue to obtain high-purity fused quartz glass sand after treatment. The application also relates to high-purity cristobalite sand and / or high-purity fused quartz glass sand prepared by using the above method.

The utility model provides a quartz crucible inner wall processing device, including the storage box, the top fixed mounting of storage box has the material receiving disc, the inner side wall fixed mounting of material receiving disc has the backflow pipe, the top fixed mounting of material receiving disc has the transition box, the one end of backflow pipe and the bottom of transition box intercommunication, the outside fixed mounting of transition box has two limit rods, the other end of two limit rods and the inner side wall fixed connection of material receiving disc, the outside slide connection of limit rod has the spraying rod, the utility model's beneficial effects: through setting up the lifting and sliding of spraying pipe inside the spraying rod and the transverse sliding of spraying rod, thereby more convenient according to the size of quartz crucible carries out the adjustment of spraying position, still through setting up the effect of material receiving disc and backflow pipe, makes quartz crucible after spraying the residual dripping material can be stored inside material receiving disc, more convenient through backflow pipe backflow to the secondary spraying of transition box inside, and then reduces the waste of material.

The invention belongs to the technical field of high-temperature materials, and discloses a method for preparing an aluminum oxide coating on a quartz crucible. The method comprises the following steps: preparing a nanometer aluminum oxide dispersion liquid, then spraying the nanometer aluminum oxide dispersion liquid on the surface of a quartz crucible through plasma spraying, and then carrying out heat treatment under vacuum to prepare an aluminum oxide coating; the nanometer aluminum oxide dispersion liquid comprises the following components in percentage by weight: 25%-50% of nanometer aluminum oxide, 0.5%-3% of a metal oxide auxiliary agent, 0.5%-2% of an adhesive and 45%-70% of water; the metal oxide auxiliary agent comprises magnesium oxide and silicon dioxide, and the mass ratio of the magnesium oxide to the silicon dioxide is (3-6): 1. The prepared aluminum oxide coating has the advantages of being high in binding force with a matrix, not prone to peeling off, capable of resisting the high temperature of 1800 DEG C and free of coating damage phenomena such as cracking and peeling off; and the coating is high in compactness and excellent in high-temperature resistance and corrosion resistance.

The application discloses a quartz crucible preparation device and method, and relates to the technical field of crucible preparation. The quartz crucible preparation device comprises a mold, a centrifugal driving mechanism, a heating mechanism and an electromagnetic auxiliary mechanism. The centrifugal driving mechanism is drivingly connected to the mold to drive the mold to rotate around its own axis. The heating mechanism is used for heating quartz sand in the molten mold. The mold is a magnetic permeable part. The electromagnetic auxiliary mechanism comprises a magnetic field generating unit. The magnetic field generating unit is arranged on the outside of the mold. The extension direction of the magnetic field generating unit is parallel to the axis direction of the mold. The magnetic field generating unit is used for generating an axial magnetic field in the inside space thereof under the excitation of current. The quartz melt keeps stable during the action of the magnetic field, that is, the quartz melt is as stably as possible attached to the ideal predetermined position on the inner wall of the mold.