108results about How to "Uniform composition" patented technology

The invention relates to the technical field of bacterial cellulose preparation, in particular to a composite flora for producing bacterial cellulose and a preparation method thereof, and the preparation method comprises the following steps: screening gluconobacter oxydans, obtaining culture medium preparation materials and preparation tools, preparing a slant culture medium set, preparing an enriched liquid culture medium set, and preparing composite flora mixed inoculation liquid. The method comprises the following steps: preparing a waste tobacco leaf leaching solution, extracting a proportional leaching solution from the waste tobacco leaf leaching solution according to a preset proportion, obtaining a mixed fermentation culture medium based on a preparation tool and the proportional leaching solution, and carrying out inoculation operation on a composite flora mixed inoculation solution by using the mixed fermentation culture medium to obtain a dry cellulose membrane; calculating the yield of the bacterial cellulose based on the dry cellulose membrane, and completing the preparation of the composite flora for producing the bacterial cellulose based on the yield of the bacterial cellulose. The method can be used for scientifically, efficiently and stably preparing the composite flora.

The invention discloses ZnO-based voltage-sensitive semiconductor ceramic as well as a preparation method and application thereof, and belongs to the technical field of semiconductor ceramic. The ZnO-based voltage-sensitive semiconductor ceramic provided by the invention is prepared from the following components: ZnO, Bi2O3, MnO2, Co3O4, Cr2O3, Sb2O3, Al (NO3) 3, a disulfide bond organic silicon cross-linking agent, a photothermal conversion agent, a photoinitiator, a dispersing agent and a solvent I. The ZnO-based voltage-sensitive semiconductor ceramic has the characteristics of continuous thickness and uniform components, the voltage gradient and the nonlinear coefficient of the ZnO-based voltage-sensitive semiconductor ceramic are superior to those of a traditional product, the parameter drift rate after surge impact is small, and the ZnO-based voltage-sensitive semiconductor ceramic can be applied to high-end application scenes such as vehicle-mounted chargers of new energy automobiles.

This invention belongs to the field of hard carbon technology, specifically relating to a bamboo-based and lignin-based hard carbon composite material, its preparation method, and its applications. The process involves pretreating raw materials to obtain pretreated material; pretreating the pretreated material with an acidic oxidant to obtain acidic oxidant pretreated material; pre-oxidizing the acidic oxidant pretreated material to obtain pre-oxidized material; pre-carbonizing the pre-oxidized material under a protective atmosphere to obtain pre-carbonized material; pulverizing the pre-carbonized material to obtain pulverized material; acid washing followed by water washing to obtain purified material; soaking the purified material in acid, filtering, and drying to obtain soaked material; mixing the soaked material with a modifier, and high-temperature coating and carbonizing under a protective atmosphere to obtain bamboo-based coated hard carbon or lignin-based coated hard carbon. Mixing the two types of hard carbon and carbon coating yields a bamboo-based and lignin-based hard carbon composite material, which is used in negative electrode sheets and batteries. When applied to batteries, the hard carbon composite material of this invention can improve battery energy density.

The application provides a method for microwave-assisted preparation of tetragonal barium titanate powder, comprising the following steps: mixing a barium source and a titanium source to obtain a non-hydrolytic sol; performing a microwave-assisted gelation reaction on the non-hydrolytic sol to obtain a wet gel; drying the wet gel to obtain a dry gel; performing heat treatment on the dry gel in a protective atmosphere to obtain a pre-sintered powder; performing microwave-assisted calcination on the pre-sintered powder to obtain a calcined powder; and performing washing and drying on the calcined powder to obtain the barium titanate powder. The method provided by the application performs a microwave-assisted gelation reaction on a sol, and through the microwave effect in the two steps of gelation and calcination, the gelation time can be shortened and the calcination temperature can be reduced, and the synergistic regulation of high purity, ultra-fine particle size and high tetragonal phase content of the barium titanate powder is realized simultaneously. The method provided by the application is simple and controllable, low in energy consumption, suitable for industrial large-scale production, and the prepared barium titanate powder can be widely applied to the preparation of ceramic capacitors, and the reliability and miniaturization capability of the device are significantly improved.

The utility model relates to low temperature gas cylinder filling technical field, concretely relates to a kind of argon and carbon dioxide mixed gas filling equipment including base, the upper surface of the base is fixedly connected with two symmetrical support frames, the inner wall of two The support frame is respectively provided with liquid argon storage tank and low-temperature liquid carbon dioxide storage tank, the outer wall between two The support frame is fixedly connected with support plate, the inner wall of the support plate is fixedly connected with mixing box, the inner wall of the liquid argon storage tank is fixedly connected with argon filling pipeline. The utility model is provided with filling busbar, can be connected with multiple gas steel cylinders simultaneously, realize the filling of multiple gas steel cylinders simultaneously, accurately control the filling amount of two kinds of gas, to ensure that argon and carbon dioxide are mixed according to specific ratio, while impeller can fully stir and mix argon and carbon dioxide entering mixing box, ensure that mixed gas composition is uniform, improve the use effect of the filling equipment.

The invention relates to the technical field of metal materials, and discloses a shape memory alloy film and a preparation method and application thereof. The shape memory alloy film comprises the following components: 50-55 at.% of Ni, 40-45 at.% of Ti, 3-5 at.% of Cu and 2-4 at.% of M, and M is selected from one or more of Zr, Hf and Nb. The shape memory alloy film has remarkable superelasticity, the recoverable strain of the shape memory alloy film can reach 8% or above, meanwhile, the compressive yield stress exceeds 1.5 GPa, and the shape memory alloy film shows excellent cycle stability. The preparation method is simple in process and high in controllability, a new scheme is provided for solving the problem of unstable performance of an existing NiTi-based film, and the preparation method is particularly suitable for high-performance micro devices such as a micro electro mechanical system.

This invention belongs to the field of electronic packaging and soldering materials technology, and relates to a lead-free solder powder for reflow soldering and its preparation method. This lead-free solder powder is based on a Sn-Ag-Cu alloy system, and achieves melt purification, β-Sn grain refinement, and interface IMC stabilization by adding trace amounts of Ce and Ni elements. Its composition, by mass percentage, is: Ag 2.9%–3.1%, Cu 0.45%–0.55%, Ce 0.01%–0.10%, Ni 0.01%–0.05%, with the balance being Sn and impurities. During preparation, a Ce-Ni master alloy is used to introduce microalloying elements, followed by vacuum melting, inert gas atomization, and surface treatment to obtain spherical solder powder. The resulting solder powder has low oxygen content, good wettability, slow interface IMC growth after reflow, high solder joint strength, and excellent thermal cycling reliability, making it suitable for high-reliability electronic packaging applications.

The invention discloses a processing method of a large-diameter seamless steel pipe for a nuclear power conventional island. The method comprises the following steps: preparing and smelting raw materials; a centrifugal casting step; post-processing the pipe blank; a finish machining and detection step; the centrifugal casting comprises the following steps: a casting mold pretreatment stage; a centrifugal casting stage; in the pipe blank cooling and solidifying stage, the rotary hot extrusion part is introduced into an inner cavity of the pipe blank, the outer wall of the rotary hot extrusion part is further coated with a heat insulation coating, and when the rotary hot extrusion part rotates, at least one working part on the outer wall of the rotary hot extrusion part and the inner wall of the pipe blank periodically move close to or away from each other in the radial direction; therefore, the rotary hot extrusion part can apply periodic radial compaction force to the inner wall of the pipe blank. Acting force can be directly applied to the inner wall of the hollow pipe blank in the cooling and solidification stage of the hollow pipe blank, the quality of the inner wall is fundamentally improved, and the hollow pipe blank of the high-quality large-diameter seamless steel pipe with the smooth inner wall, the compact structure and the uniform performance is produced.

The invention discloses a (Ti, W) C-AlCrCoNiMo high-entropy metal ceramic material as well as a preparation method and application thereof, and belongs to the technical field of metal ceramic materials. The invention provides a metal ceramic material which is prepared by taking (Ti, W) C ceramic as a matrix, adding Al, Cr, Co, Ni and Mo as a high-entropy alloy binding phase, carrying out two-step wet-dry composite ball milling process treatment and carrying out spark plasma coupling high-frequency induction sintering. The problem of segregation can be solved after two-step wet-dry composite ball milling process treatment, ideal pre-alloyed powder is obtained, the components are more uniform, the dispersity is better, and the composite powder treated by an optimized ball milling method is sintered through spark plasma coupling high-frequency induction. And the high-entropy metal ceramic material with high bending strength, high hardness and excellent fracture toughness can be obtained at the sintering temperature of 1300 DEG C.

This invention provides a collector for recovering platinum group metals (PGMs) from spent catalysts, its preparation method, and its application, belonging to the technical field of precious metal recovery. The collector comprises a copper matrix, a flux, a framework support, and a lattice activator: the copper matrix, flux, and lattice activator are loaded on the surface of the framework support; the copper matrix is ​​elemental copper or a copper-based compound; the flux is boric acid or a borate; the framework support is a porous inorganic material; and the lattice activator is tin, a tin alloy, or a metal sulfide. The collector serves as a collector for the pyrometallurgical recovery of PGMs from spent catalysts. This invention constructs a multi-component synergistic collector composed of a copper matrix, flux, framework support, and lattice activator, which significantly improves the recovery rate of PGMs, especially rhodium, from spent automotive exhaust purification catalysts in pyrometallurgical treatment, and reduces the smelting temperature required for pyrometallurgical treatment, thus significantly reducing energy consumption.

The application discloses high-entropy rare earth silicate ceramic nano powder and a preparation method and application thereof. The preparation method of the high-entropy rare earth silicate ceramic nano powder comprises the following steps: 1) dissolving rare earth oxide powder in an acid solution to prepare a rare earth salt solution; 2) mixing the rare earth salt solution and a sodium silicate solution, adding ammonia water to perform chemical co-precipitation, then performing standing and aging, and then taking the precipitate to perform drying to obtain a precursor powder; and 3) placing the precursor powder under the condition that the temperature is 1100 DEG C to 1200 DEG C to perform calcination. The high-entropy rare earth silicate ceramic nano powder has excellent characteristics such as small particle size, uniform element distribution, large component space and no impurity phase, and the preparation method has the advantages of low synthesis temperature, simple equipment, simple and controllable process, low industrialization cost and the like, is suitable for being used on a hot end part of an aerospace engine and has a very wide application prospect.

This invention discloses a traditional Chinese medicine composition for replenishing qi and nourishing blood, and its preparation method, belonging to the technical field of food-medicine homology traditional Chinese medicine health care preparations. The composition of this invention uses oyster peptide powder, compound amino acid powder, polygonatum powder, maca powder, eucommia male flower powder, ginseng powder, cordyceps powder, and earthworm protein peptide powder as core active ingredients, supplemented with deer antler powder, deer tendon powder, and deer blood peptide powder to enhance the effects of strengthening the body and nourishing blood. It is combined with xylitol, corn starch, maltodextrin, magnesium stearate, and caramel color as molding excipients. The dosage of each component is precisely controlled. Through a proprietary preparation process involving raw material pretreatment, segmented gradient mixing, and refined post-processing, a 1g / tablet formulation is prepared. The formulation of this invention is rigorously formulated, with clear distinctions between principal, assistant, and adjuvant ingredients, and each component synergistically enhances its effect. It can fundamentally improve problems such as qi and blood deficiency, insufficient vital energy, fatigue, and physical weakness. It has comprehensive efficacy, rapid onset of action, and wide applicability, possessing extremely high industrial promotion and health care application value.

This invention provides a method for preparing high-nitrogen-content vanadium-containing steelmaking additive silicon vanadium ferronitride, comprising the following steps: 1) mixing vanadium oxide and a carbon source at a C / O molar ratio of 0.8-1, briquetting the mixture, and then placing it in a nitrogen atmosphere for a reduction nitriding reaction at 1100-1400 °C to obtain a one-step product; 2) crushing the one-step product obtained in step 1), mixing it with a silicon source and an iron source, briquetting the mixture, and then placing it in a nitrogen atmosphere for densification treatment at 1300-1500 °C to obtain high-nitrogen-content silicon vanadium ferronitride, wherein the silicon source is ferrosilicon and / or silicon. This invention can obtain high-purity, uniformly composed, and highly dense silicon vanadium ferronitride, improving the automation level and continuous production capability of the production process.

The invention discloses an ammonia-methanol coupling gas production device and a use method thereof, and belongs to the technical field of controllable atmosphere preparation, the ammonia-methanol coupling gas production device comprises a central combustion zone, a peripheral cracking zone and a tail mixing purification zone which are coaxially nested; the central combustion area comprises a hearth wall, and the hearth wall is of a honeycomb-shaped porous heat exchange structure; the peripheral cracking area is arranged on the outer side of the central combustion area, a catalyst bed layer of a spiral flow guide structure is arranged in the peripheral cracking area, and a high-temperature-resistant heat-conducting filling layer is arranged between the catalyst bed layer and the hearth wall of the central combustion area; the tail mixing and purifying area is connected to the downstream of the central combustion area and the peripheral cracking area and used for mixing and purifying combustion products from the central combustion area and cracking gas from the peripheral cracking area. By optimizing a heat exchange interface and a catalyst bed layer structure, the heat transfer uniformity and the response speed are enhanced, so that stable temperature control and preparation of high-purity mixed gas are realized.

The utility model belongs to the technical field of semi-solid aluminum alloy processing, and provides a stirring degassing device for preparing semi-solid aluminum alloy, which comprises a lifting frame which is in transmission connection with a lifting piece; the transmission assembly comprises a gear box fixedly connected to the lifting frame, a planetary gear transmission mechanism is arranged in the gear box, a driving part is in transmission connection between the input end of the planetary gear transmission mechanism and the gear box, and the output end of the planetary gear transmission mechanism is in transmission connection with a plurality of stirring parts; and the gas powder conveying assembly comprises gas powder conveying equipment and a degassing shaft arranged in the planetary gear transmission mechanism, the bottom of the degassing shaft communicates with a degassing head, the degassing head is located in the semi-solid aluminum alloy melt, and the gas powder conveying equipment communicates with the degassing head through the degassing shaft. The semi-solid aluminum alloy melt degassing device can be used for efficiently degassing a semi-solid aluminum alloy melt, purifying the melt and homogenizing components.

The application belongs to the technical field of metal materials, and discloses a high-strength and high-toughness medium-manganese steel based on warm rolling and deep cryogenic treatment and a preparation method thereof. The preparation method comprises the following steps: combining a specific warm rolling process (720 DEG C~760 DEG C) with liquid nitrogen deep cryogenic treatment (soaking for 0.3~0.6h) and supplementing low-temperature tempering (180 DEG C~220 DEG C). The process induces deformation through warm rolling, promotes the transformation and refinement of austenite into martensite in combination with deep cryogenic treatment, and then eliminates internal stress and precipitates fine carbides through low-temperature tempering, so as to synergistically control the microstructure. The technical bottleneck that the strength and plasticity of traditional medium-manganese steel are difficult to be compatible is effectively solved, and the organization is super-refined and the stability is improved. The obtained medium-manganese steel has a good match between ultra-high strength and excellent plasticity, the yield strength is greater than 1800MPa, the tensile strength is as high as 2300MPa, the elongation after fracture is more than 17%, and the comprehensive mechanical properties are significantly improved.

This utility model relates to the field of mung bean beverage technology, and discloses a mung bean beverage filling device, including a machine body. A filling mechanism is installed in the middle of the machine body, and a beverage tank is installed in the middle of the filling mechanism. An outlet tank is installed on the top of the machine body. An installation frame is installed on the left rear end of the machine body, and an installation tank is installed on the top of the installation frame. A fixed circular plate is fixedly connected to the top of the installation tank, and a stirring tank is fixedly connected to the top of the fixed circular plate. A second motor is installed on the right side of the stirring tank, and a rotating rod is fixedly connected to the output end of the second motor. In this utility model, when the second motor is turned on, the driving bevel gear and the driven bevel gear mesh and drive the connecting rod to drive the connecting curved plate and the stirring rod to stir the beverage, ensuring uniform composition. The spiral pattern at the bottom of the connecting rod is threaded to the filter plate to filter the beverage, remove impurities, reduce the amount of impurities entering the beverage tank, and improve product quality.

The invention relates to the technical field of optical films, and discloses a preparation method of a high-transmittance and high-fog coating with a microstructure on the surface, and the preparation method comprises the following steps: uniformly mixing a low-surface-energy initiator, a monofunctional acrylate monomer, a polyfunctional acrylate monomer, an acrylate prepolymer and a micromolecular initiator in an organic solvent to obtain light-cured glue; coating the light-cured glue on the surface of a light-transmitting base material, and drying to obtain a coated wet film; and the coating wet film is subjected to ultraviolet irradiation curing, and the high-transmittance and high-fog coating with the microstructure on the surface is obtained. The preparation method has the advantages that the raw materials are simple and easy to obtain, the composition is uniform, processing is convenient, and the equipment requirement is low, the prepared surface wrinkle coating film has high transmittance, high haze and good uniformity, and the surface wrinkle morphology and roughness can be controlled through processing process parameters such as heating time and illumination time.

The present application relates to the technical field of lithium battery production, and particularly relates to a high-energy-efficiency carbon kiln and a preparation method thereof. The high-energy-efficiency carbon kiln is prepared from carbon coarse aggregate, carbon fine aggregate, carbon fine powder, a conditioning additive and a water-soluble binding agent through high-temperature carbonization. The microstructure controllable crucible matrix is prepared by using different particle gradations, the carbon kiln blank strength is improved by using modified resin and industrial syrup as the composite binding agent, the damage rate is reduced, a three-dimensional network structure is formed in the interior of the kiln during the baking process to coat the aggregate, fill the pores and enhance the corrosion resistance of the carbon kiln. The modified resin has good affinity with the conditioning agent on the carbon chain, and the Fe2AlB2 fiber with excellent damage tolerance is generated in-situ while the zirconium boride, aluminum powder, iron powder and boron gangue are enriched. The coupling effect of the modified resin skeleton and the Fe2AlB2 whisker further improves the toughness and thermal shock stability of the product, and increases the service life.

The invention discloses a preparation method of an Al-RE intermediate alloy based on an alloy opposite doping method, which comprises the following steps: firstly, industrial pure aluminum Al and mother alloy Al-90RE are taken as raw materials, the raw materials are dried according to a mass ratio meeting the requirement of Al-(10-50) RE, then, the raw materials are melted by adopting a two-stage variable-temperature melting method to obtain an Al-RE melt, then, the Al-(10-50) RE melt is refined, and meanwhile, the Al-RE intermediate alloy is prepared by adopting an alloy opposite doping method. The steel ingot mold is preheated, and finally, the refined Al-RE melt is poured into the preheated steel ingot mold to be cooled, so that an Al-RE intermediate alloy ingot based on the alloy opposite doping method is obtained; rE is one of La, Ce or La + Ce alloy. The obtained Al-RE intermediate alloy is compact in metallographic structure and less in inclusion; in addition, the yield is greater than 90.0%.

The invention relates to the technical field of high-temperature superconducting materials, and discloses a CuC-based copper oxide high-temperature superconducting material and a preparation method and application thereof. The chemical formula of the CuC-based copper oxide is (Cux, MyC1-x-y) Ba2Ca3Cu4O11 + delta, M is selected from at least one of B, Al, Si, Ge, S, Se and Te, x is more than or equal to 0.1 and less than or equal to 0.9, and y is more than 0 and less than or equal to 1. The preparation method comprises the following steps: firstly, respectively synthesizing BaCuO2 and Ca2CuO3 precursor powder, then mixing the precursor powder with a compound containing an M element, and finally preparing the target material for coating through multiple times of ball milling and sintering. According to the method, an unstable gas carbon source in a traditional process is replaced by optimization of doping elements and introduction of a stable solid doping source, the superconducting target material with uniform components and high stability is successfully prepared, and a superconducting strip prepared from the CuC-based copper oxide target material is high in superconducting transition temperature and excellent in long-term stability. And the key problems of difficult component control and narrow process window in the preparation process of the (Cu, C) Ba2Ca3Cu4O11 + delta material are successfully solved.

This invention relates to a method for preparing a core-shell structured Al-Zn@Al2O3 composite phase change thermal storage material, belonging to the technical field of medium- and high-temperature phase change thermal storage materials. This invention involves adding an aluminum powder suspension to an HCl solution and stirring at 45–65°C for 5–10 minutes. Gelatin is then added, and the mixture is reacted at 45–65°C with stirring for 10–20 minutes to obtain solution A. NH4F solution is slowly added to solution A at 40–60°C with stirring, and the reaction continues for 30–60 minutes. A mixture of zinc sulfate solution and ethylenediaminetetraacetic acid is then added, and the mixture is reacted for 3–5 hours. After standing, the solid and liquid are separated. The solid is washed 3–5 times alternately with anhydrous ethanol-water-anhydrous ethanol and dried to obtain solid B. Under a protective atmosphere, solid B is uniformly heated to 600–660°C and calcined at high temperature for 2–4 hours to obtain aluminum-zinc alloy powder. Under an air atmosphere, the aluminum-zinc alloy powder is uniformly heated to ~800°C and calcined at high temperature for 1–4 hours to obtain a core-shell structured Al-Zn@Al2O3 high-temperature phase change heat storage material.

The utility model relates to the production field of oil removal agent relates to a kind of oil removal agent split charging device, the utility model includes: conveyer belt, rack, box, stirring subassembly and liquid outlet subassembly, the conveyer belt is symmetrically equipped with feed side baffle, conveying passage is equipped between the feed side baffle, the rack is set in the middle part of conveyer belt, the box is fixed between rack, the stirring subassembly is set in box interior, the box bottom is equipped with discharge gate, the liquid outlet subassembly includes hose, lower liquid hard pipe and drive assembly, the hose upper end connects discharge gate, the hose lower end connects lower liquid hard pipe, the drive assembly drives lower liquid hard pipe and inserts into the canning bottle of conveying passage, the middle part of feed side baffle is equipped with positioning fork, the rear end of positioning fork is equipped with pusher, the left and right positions of the canning bottle positioned below lower liquid hard pipe are limited by positioning fork.

The invention discloses Ti-based alloy powder, which is prepared from the nominal components in percentage by atom: (5 to 10) of Ti, (2 to 5) of Al, (1 to 3) of V, (0.5 to 2.0) of Y2O3 and the balance of Ti and inevitable impurities, the preparation method comprises the following steps: 1, weighing raw material powder; 2, charging and sealing; 3, ball milling; and 4, discharging to obtain Ti-based alloy powder. According to the Ti-based alloy powder disclosed by the invention, high-volume nano Y2O3 is introduced and uniformly dispersed in a Ti matrix to form a dispersion strengthening phase, so that the room-temperature and high-temperature strength, creep resistance and thermal stability of the alloy are improved; according to the mechanical alloying process, the ball-to-material ratio, the rotating speed and the time of ball milling are strictly controlled, intermittent ball milling and external cooling are adopted to control temperature rise and pollution, it is guaranteed that Y2O3 forms nanocrystalline and a dispersion strengthening phase in a Ti matrix, the strength, hardness and thermal stability of the alloy are improved, the process is controllable, and repeatability is good.

The application discloses a high-end caliper stainless steel surface composite strengthening system and process, which comprises a quenching device, a tempering device, a rolling device, a high-current pulse electron beam irradiation device and an ultrasonic cleaning device. The process specifically comprises the following steps: S1, quenching treatment; S2, tempering treatment; S3, rolling treatment; S4, high-current pulse electron beam irradiation treatment; and S5, cleaning treatment. The system can perform three-blade rolling treatment on the heat-treated caliper through the rolling device, can homogenize the surface layer structure of the caliper while improving the machining efficiency, can reduce the surface roughness of the caliper, can effectively realize the overall straightening of the caliper, and can reduce the quenching deformation. After the surface modification of the caliper through the high-current pulse electron beam irradiation device, the caliper can form a surface layer with uniform composition and nanometer-sized grain refinement, can not have obvious interface between the caliper matrix and the nanometer structure surface layer, and can not easily fall off, so that the service life of the caliper is greatly prolonged.

The utility model provides an anti-settling high-efficiency mixing device for water-based paint production, which comprises a mixing tank, a driving unit, a rotating main shaft, an upper-layer axial-flow paddle, a lower-layer radial-flow paddle and a bottom scraping and sweeping unit, the driving unit is arranged at the top of the mixing tank, the output end of the driving unit is fixedly connected with the top end of the rotating main shaft, and the bottom scraping and sweeping unit is arranged on the rotating main shaft. The rotating main shaft extends into the mixing tank from the top of the mixing tank along the central axis of the mixing tank, the bottom end of the rotating main shaft is hinged to the bottom of the mixing tank, and the upper-layer axial-flow type paddle, the lower-layer radial-flow type paddle and the bottom scraping and sweeping unit are fixedly connected with the rotating main shaft and are sequentially arranged along the rotating main shaft from top to bottom; an inclined angle is formed between the blade surface of the upper-layer axial-flow type blade and the horizontal plane; and the lower-layer radial flow type paddle is a turbo type paddle. A three-dimensional circulating flow field is formed in the tank body, mixing dead angles at the center of the tank bottom and the corners of the tank wall are eliminated, and sedimentation of pigment and filler in water-based paint is effectively prevented.

The application discloses an annealing method of a cadmium zinc telluride wafer, which comprises the following steps: S1, placing the cadmium zinc telluride wafer and tellurium powder into different positions of an annealing furnace, and sealing the annealing furnace and then vacuumizing; S2, slowly heating the annealing furnace to 790-805 DEG C, and then performing heat preservation; and S3, slowly cooling, and thus obtaining the cadmium zinc telluride wafer. The annealing method has the advantages of easy operation, short technological process, strong controllability, short time required, low number of bright spots of the cadmium zinc telluride wafer with a diameter of 0.3 microns after annealing (less than 30), low internal stress, uniform composition, high resistivity, few particle inclusions, and the like, and the method can process hundreds of wafers at one time, so that the processing efficiency is high, and the method has considerable application prospect.

The invention discloses a preparation method and application of a rare earth magnesium alloy surface micro-arc oxidation film layer manufactured through electric arc additive manufacturing, and relates to the technical field of additive manufacturing light metal surface treatment. The preparation method comprises the following steps: manufacturing a rare earth magnesium alloy through electric arc additive manufacturing; carrying out homogenizing heat treatment on the rare earth magnesium alloy subjected to electric arc additive manufacturing; performing earlier-stage treatment; preparing an inner-layer alkaline electrolyte and an outer-layer alkaline electrolyte; and step-type voltage micro-arc oxidation treatment: taking stainless steel as a cathode, taking the magnesium alloy as an anode, sequentially putting the stainless steel and the magnesium alloy into the inner-layer alkaline electrolyte and the outer-layer alkaline electrolyte for micro-arc oxidation, cleaning and drying to obtain a micro-arc oxidation film layer on the surface of the magnesium alloy. According to the preparation method, the problems that a traditional micro-arc oxidation coating is loose, porous, prone to corrosion and short in service life are solved, the corrosion resistance of the magnesium alloy is effectively improved, the magnesium alloy is prevented from volatilizing under the high-temperature condition, the working requirement of a satellite support in the space environment is met, and the application range of the magnesium alloy is widened.

The invention belongs to the technical field of metal-based composite materials, and relates to a multi-scale ceramic phase reinforced 750 DEG C-resistant titanium-based composite material and a preparation method thereof. The composite material is formed by compounding a matrix and multi-scale ceramic, the multi-scale ceramic phase is micron-scale titanium boride and nano-scale lanthanum oxide, the matrix is a near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy, the mass parts of all elements including 6-8 mass parts of Al, 7-9 mass parts of Zr, 5-7 mass parts of Sn and the like are stipulated in the matrix, and through quantitative adding and in-situ reaction of LaB6, the multi-scale ceramic phase and the near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy can be obtained. The total content of micron TiB and nano La2O3 is precisely regulated and controlled (the total integral number of the reinforced phase is increased by about 2.3% every time the increase of LaB6 is 0.5%), the in-situ generated reinforced phase is firmly combined with a matrix interface, impurity pollution is avoided, and the problems of agglomeration and interface combination of externally added ceramic particles are avoided.

The utility model discloses a kind of fertilizing device based on grain and oil crop chemical fertilizer reduction synergism, belong to grain and oil crop technical field, the fertilizing device includes support plate, the support plate top end symmetrical fixed mounting solid-state fertilizer box and liquid fertilizer box, spiral feeder is installed in the solid-state fertilizer box, liquid outlet pipe is installed in one side of the liquid fertilizer box, first valve is installed on the liquid outlet pipe, the support plate bottom end fixed mounting mixing box, the mixing box top end and the support plate are provided with the communicating feed inlet, stirring assembly is installed in the mixing box, a plurality of spray heads are fixedly installed in the mixing box bottom end, flow valve is installed on the spray head, the device realizes solid-liquid fertilizer accurate proportioning, uniform mixing, accurate control, soil loosening absorption, reduce waste, improve efficiency, boost chemical fertilizer reduction synergism.