2345 results about "Crucible" patented technology

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 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 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 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 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 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 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.

The invention provides an anti-gravity casting device and technology for a metal-based composite foam material, the anti-gravity casting device comprises a casting forming system, a melt liquid lifting system and a metal smelting system, the casting forming system comprises an upper furnace chamber, a mold is arranged in the upper furnace chamber, a ceramic hollow ball is arranged in the mold, and the melt liquid lifting system comprises a liquid lifting pipe and a lifting device; the metal smelting system comprises a crucible and a lower furnace chamber, molten metal is arranged in the crucible, the mold and the crucible are communicated through the liquid rising pipe, and the lifting device is connected with the upper furnace chamber and the lower furnace chamber. And the molten metal overcomes the gravity of the molten metal and permeates into the ceramic hollow ball stack from bottom to top, and the metal-based composite foam material with the hollow ball reinforced particles evenly distributed is obtained. According to the casting method, most of residual gas in gaps of the hollow balls can be removed, defects in castings are reduced, and the mechanical property of the composite foam can be improved.

The invention discloses a high-carbon ferro-chrome smelting control method based on a submerged arc furnace, and relates to the field of high-carbon ferro-chrome smelting control, and the high-carbon ferro-chrome smelting control method comprises the following steps: constructing a three-dimensional temperature measurement network, generating temperature field distribution in the furnace based on three-dimensional space coordinates of all temperature measurement points, and further extracting boundary position coordinates and volume change trend of a molten pool; the method comprises the following steps: performing matching degree calculation on an electrode position impedance gradient curve and a molten pool boundary change trend to diagnose the structural stability of a crucible area, calculating the partial pressure ratio of key components based on hearth pressure, and comprehensively diagnosing the overall health state grade of the furnace condition in the furnace in combination with the structural stability state of the crucible area in the furnace; according to the diagnosed overall health state grade of the furnace condition, the proportion of the chromium ore, the coke and the flux is dynamically adjusted, accurate sensing of the multi-dimensional state in the furnace and grading diagnosis of the furnace condition are achieved, the problems of insufficient reduction of raw materials, waste of the chromium ore and the like can be avoided in time, and the product purity and the smelting stability are guaranteed.

The invention discloses a high-purity material pulverizing and conveying system, which belongs to the technical field of metal pulverizing and comprises a pulverizing production line, a conveying production line and a material storage tank. The pulverizing production line comprises a high-temperature smelting furnace and a pulverizing crucible; an automatic sealing cover is arranged at the top of the high-temperature smelting furnace, a smelting cavity of the high-temperature smelting furnace is connected with a nitrogen tank through a nitrogen pipe, and melt in the high-temperature smelting furnace is discharged into the powder preparation crucible through a heating type discharging pipe; the conveying production line comprises a powder recycling unit and a vacuum feeding machine. The high-temperature smelting furnace is filled with nitrogen and oxygen is isolated, the problem of oxidation of metal in the smelting process is greatly reduced or avoided, oxide floating and gathering are further avoided, the problem that a discharging pipe is blocked due to material blocking caused by oxide floating is solved, meanwhile, material output is constant through air pressure, and the production efficiency is improved. The discharging mode instead of a traditional mode of using a discharging valve is adopted for discharging, the problem that production is out of control due to the fact that high-temperature metal corrodes a control element of the discharging valve is thoroughly solved, the material output stability is high, and the production quality is improved.

The invention belongs to the technical field of semiconductor material preparation, and particularly relates to a crucible assembly for synthesizing silicon carbide powder and a synthesis method of the crucible assembly. The crucible assembly comprises an outer crucible, a charging crucible and a supporting ring. The outer crucible is made of isostatic graphite, the side wall of the inner cavity is provided with a gas guide groove, and the bottom and top crucible covers are provided with vent holes; the charging crucible is made of porous graphite and is accommodated in the outer crucible; the support ring is arranged between the two, and the support surface is provided with a groove. Through the synergistic effect of the bottom vent hole, the supporting ring groove, the outer crucible side wall gas guide groove and the top vent hole, a gas channel of bottom gas inlet, side wall flow guide and top gas exhaust is formed. Impurities such as nitrogen adsorbed by the raw materials can be forcibly discharged, and the nitrogen content of the powder is effectively reduced; and meanwhile, excessive heat on the side wall and the bottom of the crucible is taken away through gas flow, the uniformity of a synthetic thermal field is remarkably improved, local excessive carbonization of the powder is avoided, and therefore the purity and consistency of the silicon carbide powder are synchronously improved.

The invention relates to a crucible cleaning and spraying device and a segregation method purification system. The crucible cleaning and spraying device comprises a crucible cleaning assembly comprising a scraping and sweeping piece, and the crucible cleaning assembly is arranged on a cleaning station and used for cleaning the inner surface and the bottom face of a crucible; the crucible spraying assembly comprises a spray head and a spraying liquid container, the spray head is connected with the spraying liquid container, the crucible spraying assembly is arranged on the spraying station and used for spraying the crucible cleaned by the crucible cleaning assembly, and the cleaning station and the spraying station are arranged adjacently; and the dust removal assembly comprises a dust cover, and the dust cover is arranged above the cleaning station and the spraying station and used for covering the crucible cleaning assembly and the crucible spraying assembly. According to the crucible cleaning and spraying device and the segregation method purification system, the crucible cleaning and spraying efficiency and consistency can be improved, and environmental pollution can be reduced.

The invention belongs to the technical field of vacuum centrifugal casting and vacuum induction melting, and particularly relates to a complex thin-wall casting vacuum induction remelting pouring temperature gradient control device and method, and the device comprises a calculation system, a temperature measurement mechanism, a rapid induction remelting mechanism and a bottom pouring crucible; the calculation system is used for achieving simulation calculation of rapid induction remelting and bottom pouring of the alloy ingot, and the temperature measuring mechanism outputting target remelting characteristic parameters is used for measuring temperature changes and temperature gradient distribution of the top, the middle and the bottom of the alloy ingot in the remelting process in real time. The rapid induction remelting mechanism is used for melting the alloy ingots and achieving the melting sequence of the alloy ingots from top to bottom and from outside to inside. By means of the high-temperature alloy remelting device, the problem that in the high-temperature alloy remelting process, due to the fact that the temperature gradient is disordered, alloy is completely melted or part of alloy liquid flows out from the bottom firstly is effectively solved, and casting defects are reduced.

The invention provides a bituminous coal caking index full-process detection system based on a mechanical arm and a use method thereof, which can realize the operation of the whole bituminous coal caking index detection process from blanking weighing to crucible testing and then cleaning and recycling through the mechanical arm, and can liberate laboratory technicians from a tedious, monotonous and harmful working environment. And intelligent, unmanned, specialized, technical and standardized caking index detection and inspection service is realized. The system comprises a blanking weighing module used for placing quantitative samples into a crucible; the bonding pre-treatment and post-treatment module is used for treating samples before and after coking; the high-temperature furnace module is used for performing high-temperature coking treatment on the sample; the mechanical arm is used for clamping a crucible or a crucible holder and circulating among the blanking weighing module, the bonding pretreatment and aftertreatment module, the high-temperature furnace module, the bonding rotary drum tester module, the cooling module and the cleaning module.

The invention relates to the technical field of high-entropy ceramic powder, in particular to diboride high-entropy ceramic powder and a preparation method thereof.The preparation method comprises the following steps that five transition metal oxides, boron powder and fused salt serve as raw materials, are evenly mixed through a mixer and then are dried at the temperature of 60-200 DEG C, and a mixture is obtained; then, the mixture is put into a corundum crucible, and heat preservation is conducted for 1-20 h at the temperature interval of 700-1600 DEG C and under the protective atmosphere; and after the reaction is completed, cooling, washing, carrying out suction filtration, and drying at 60-200 DEG C to finally prepare the diboride high-entropy ceramic powder. The method has the advantages of low synthesis temperature, small product particle size, uniform element distribution, environment friendliness and the like, and the prepared diboride high-entropy ceramic powder shows excellent electromagnetic wave absorption performance.

The invention discloses a silicon carbide growth feeding device which comprises a feeding box and a conveying mechanism installed in the feeding box, a crucible capable of moving up and down is arranged on the conveying mechanism, a uniform feeding assembly is arranged in the feeding box and comprises a guide disc, a feeding pipe is arranged on the guide disc in a sliding mode, a sliding pipe is rotationally arranged on the feeding pipe, and the sliding pipe is connected with the feeding box. A trowelling frame and a stirring frame are rotatably arranged at the bottom of the guide disc, a lifting assembly is arranged in the feeding box and comprises a plurality of lifting sliding rails fixedly connected to the interior of the feeding box, lifting threaded sliding blocks capable of moving up and down are slidably arranged in the lifting sliding rails, and vibrating bars and clamping blocks are installed on the lifting threaded sliding blocks; the uniform feeding assembly helps materials to be uniformly distributed and leveled, the lifting assembly achieves crucible lifting and material compaction, manual participation is not needed in the feeding process, the influence of human factors is reduced, the growth shape of silicon carbide crystals is regular, and waste of follow-up machining is reduced.

The invention relates to a process for preparing a phosphor copper rod by using a phosphonate-amide composite purifying agent as a quenching aid, and belongs to the technical field of non-ferrous metallurgy. Phosphorus pentoxide and sodium carbonate are mixed and decocted into fused salt, the fused salt is cooled and ground and then added into a corundum crucible together with scrap copper to be rapidly heated, compressed air is blown in, and slagging-off is conducted after heat preservation and standing; blowing mixed gas into the melt for reduction refining; adding calcium boride into the melt for refining; the refined copper liquid is subjected to continuous casting and continuous rolling; rapidly immersing the phosphorus copper rod subjected to continuous casting and rolling into a quenching aid solution, and carrying out quenching treatment; and the quenched phosphor copper rod is blow-dried and dried, and the high-conductivity phosphor copper rod is obtained. The high-purity phosphorus copper rod prepared by the method is excellent in key indexes of copper content, phosphorus content and conductivity, and meets the expected requirements of high purity and high conductivity.

The invention relates to a multi-airflow alternating temperature calcining device for ultra-long nitride single crystal nanofibers. The multi-airflow alternating temperature calcining device comprises a reaction furnace; the mechanical vacuum pressure gauge and the exhaust port are arranged at the top of the reaction furnace; the reaction furnace chamber is arranged in the reaction furnace; the multi-reaction-zone graphite furnace body is arranged in the reaction furnace chamber and comprises a first low-temperature zone, a second high-temperature zone and a third low-temperature zone which are sequentially arranged from bottom to top and are not in contact with one another; the electromagnetic heating controller is arranged on the periphery of the multi-reaction-area graphite furnace body; the graphite boat is movably arranged in the multi-reaction-area graphite furnace body; the movable alumina crucible is arranged in the graphite boat; the graphite columns are arranged at the top and the bottom of the multi-reaction-zone graphite furnace body; the hydraulic cylinder is connected with the graphite column; and a control assembly. Compared with the prior art, the method has the advantages that the nitridation reaction process can be accurately controlled, the fiber quality and the crystal integrity can be improved, and independent and accurate temperature control can be realized.

The invention discloses an oxygen-enriched destressing crystal growth method and a crystal growth furnace, and relates to the technical field of crystal growth, and the oxygen-enriched destressing crystal growth method comprises the following steps: step 1, pre-treating a PMNT polycrystal material, and putting the pretreated PMNT polycrystal material into a crucible; 2, pre-flushing the growth furnace and creating an oxygen partial pressure environment; 3, raising the temperature in the growth furnace to melt and homogenize the PMNT polycrystal material in the crucible; step 4, the crucible moves downwards for directional solidification of the crystal, a solid-liquid interface is formed and stably moves upwards, and in the process, a dynamic regulation and control strategy is adopted in the growth furnace to control an oxygen-enriched environment to promote crystal growth, so that the crystal digests growth stress in the growth process, and formation of oxygen vacancies is inhibited; and step 5, after crystal growth is finished, gradient cooling is performed to room temperature in an oxygen-enriched environment, and a crystal ingot is obtained. Oxygen is used as a regulation and control tool, the stress problem caused by oxygen vacancy is physically solved, the color center and performance problems caused by oxygen vacancy are chemically solved, and the crystal growth quality is improved.

The invention belongs to the technical field of silicon carbide ceramics, and particularly relates to stepped oxidation modified silicon carbide powder as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) paving silicon carbide powder in a crucible and placing the crucible in a tubular furnace; (2) performing oxidation treatment on the silicon carbide powder under the condition that gas flows along the axis direction of the tubular furnace, namely, at a first stage, heating to 250-350 DEG C in a mixed atmosphere of air and nitrogen, and preserving heat; in the second stage, under the mixed atmosphere of air and nitrogen, the temperature continues to rise to 550-650 DEG C for heat preservation; in the third stage, under the mixed atmosphere of humid air and nitrogen, the temperature continues to rise to 950-1050 DEG C, and heat preservation is conducted; and (3) under the mixed atmosphere of air and nitrogen, the temperature is reduced to 300-400 DEG C, passivation treatment is conducted, the stepped oxidation modified silicon carbide powder is obtained, 3D printing ceramic slurry prepared from the modified silicon carbide powder is high in solid phase content, and a printed blank is free of cracking defects.

A lunar regolith reduction reactor system includes a housing, a crucible, and a pair of electrodes. The housing includes a base structure and a cover structure detachably connected to the base structure, a gas input port to permit input of hydrogen gas into the housing, and a gas output port to permit outgassing of water vapor and gases. The crucible is designed to hold an amount of lunar regolith in the housing. The electrodes are disposed apart from one another and adjacent the crucible, wherein the electrodes are connectable to a power source to generate an electric arc to heat lunar regolith in the crucible and initiate a reduction reaction to separate oxygen gas and reduce separated material into a molten state.

The invention relates to a silicon single crystal drawing method capable of reducing the resistivity range of a whole silicon single crystal rod, which belongs to the technical field of wafer processing and comprises the following operation steps of: 1, completely melting a solid silicon material and a doping agent into liquid in a crucible a; and 2, slowly lowering the crucible position in the crucible b to realize that a part of liquid at the bottom of the crucible is slowly solidified into a solid from the bottommost part. And 3, after the crucible in the crucible c is slowly lowered and stopped, seeding, shouldering and equal-diameter operation are carried out. And 4, carrying out an equal-diameter growth stage in the d crucible. And 5, continuously growing the single crystal rod in the e crucible. And 6, finishing silicon single crystal drawing in the crucible f through an ending process. An initial state of'high-concentration melt + low-concentration solid 'is constructed before crystal pulling, and real-time and dynamic dilution compensation is performed on the concentration of a dopant of a main melt, so that the inherent defect of resistivity axial non-uniformity caused by a segregation effect in a traditional Czochralski method is effectively overcome.

The invention discloses a rapid cooling and dust removing system and method for a metal smelting crucible. The system comprises a cooling and dust removing device, a dust remover, an air compressor, a water pump, a limiting switch, a time relay and a controller. An air outlet of the air compressor is respectively communicated with an air inlet of the air blowing pipe and an air inlet of the water spraying pipe of the cooling dust removal device through hoses; a water outlet of the water pump communicates with a water inlet of the spray pipe through a hose; and a limiting switch is arranged on a sealing furnace cover of the smelting furnace. The method comprises the following steps: (1) moving the cooling dust removal device in place; and (2) cooling and dedusting. The rapid cooling and dust removal system for the metal smelting crucible has the beneficial effects that the automatic cooling and dust removal functions on the smelting crucible are achieved, the cooling rate and the dust removal effect on the crucible are improved, and the field environment is protected; the invention discloses a rapid cooling and dust removing method for a metal smelting crucible. The method is high in automation degree, manual intervention and operation errors are reduced, the cooling speed is remarkably increased, and the crucible cooling period is shortened. The pollution of dust to workshop air is greatly reduced, the health of operators is protected, and meanwhile, the adhesion abrasion of dust to equipment is reduced.

The present invention relates to the technical field of the preparation of Cr3+-doped fluorescent materials. Disclosed are the preparation of a Cr3+-doped fluorescent material and the use thereof in a plant light supplement lamp. The preparation comprises the following steps: weighing a matrix raw material and a Cr3+-containing raw material according to the stoichiometric ratio, and respectively grinding and then storing same in a dryer; placing the raw materials into a ball milling tank, and subjecting same to planetary ball milling for 3-6 hours; transferring same to an alumina crucible, and pre-sintering same for 2-5 hours; after secondary ball milling, adding a fluxing agent thereto; placing same in a high-temperature furnace and sintering same for 6-10 hours, and furnace cooling same or cooling same under the protection of an inert gas; and firstly coarsely crushing same, then grinding same to 10-30 μm, alternately cleaning same with deionized water and ethanol, drying same in an air dry oven, detecting and screening the product by using a fluorescence spectrophotometer, an X-ray diffractometer and a scanning electron microscope, and remanufacturing unqualified products after adjusting process parameters according to detection results. The present invention has a high light-emitting efficiency, and the spectrum thereof is suitable for plant photosynthetic absorption. When being applied to a light-supplementing lamp, plant growth can be promoted, the plant height and the chlorophyll content are significantly increased, and the natural spectrum is simulated, such that the material is suitable for multiple cultivation scenarios.

The embodiment of the invention provides a crystal pulling heating power regulation and control method, device and equipment and a storage medium, and belongs to the technical field of monocrystalline silicon material production. The method comprises the steps that real-time crystal pulling parameters are obtained, wherein the real-time crystal pulling parameters comprise the real-time residual material weight and the real-time crystal pulling speed; based on the real-time residual material weight, the real-time crystal pulling speed and a pre-constructed mapping table, the current heating compensation power is determined, the current crystal pulling heating power is regulated and controlled through the heating compensation power, and the mapping table comprises the mapping relation of the residual material weight, the crystal pulling speed and the compensation power. According to the invention, based on the real-time crystal pulling parameters, the proper current heating compensation power can be rapidly determined by using the pre-constructed mapping table, so that the crystal pulling heating power is regulated and controlled to maintain the solid-liquid interface temperature of the silicon material in the crucible, the stability of the crystal pulling process is improved, and the occurrence of abnormal crystal pulling is reduced.

The utility model provides an anti-splashing auxiliary material adding guide device for a vacuum melting furnace, which belongs to the technical field of vacuum melting furnaces and comprises an auxiliary material storage bin fixed in an inner cavity of a furnace body, a blanking port extending to a hearth is arranged at the bottom of the auxiliary material storage bin, an inner cavity of the blanking port is provided with an auxiliary material adding channel extending to a position above a crucible, and the auxiliary material adding channel is communicated with the auxiliary material storage bin. The auxiliary material adding channel is arranged on the inner wall of the discharging opening in a sliding mode through a follow-up sealing assembly, the outer wall of the discharging end of the auxiliary material adding channel is connected with a splash-proof top block used for covering the top of the crucible in a sleeved mode, and the auxiliary material adding channel is a pipe-shaped piece. In the process, the multi-stage telescopic cover gradually covers the top of the crucible opening along with the splash-proof top baffle, it is guaranteed that the top of the crucible can be completely covered in the whole process, and splashing in the auxiliary material feeding process is avoided.

The utility model provides a vacuum induction furnace, which belongs to the technical field of metallurgy and comprises a vacuum induction furnace body and a siphon deslagging device arranged on the vacuum induction furnace body. The siphon deslagging device comprises a slag collecting and separating device and a deslagging channel; the slag collecting and separating device is arranged at the upper part of a molten pool of the vacuum induction furnace body; the deslagging channel comprises an inner channel vertically arranged in the side wall of a heating crucible of the vacuum induction furnace body, a transition channel communicated with the lower part of the inner channel and an outer channel connected with an outer port of the transition channel; the lower part of the outer channel is communicated with the outer port of the transition channel; and the pressure at the slag inlet at the upper part of the inner channel is greater than that at the slag outlet at the upper part of the outer channel. According to the utility model, the problems that in the metal smelting process of the vacuum induction furnace in the prior art, the slag is difficult to discharge, the slag and the gold are mixed out and the slag is difficult to continuously discharge under the vacuum condition due to poor fluidity of the slag and difficult separation of the slag and the gold can be solved.