64results about How to "Improve defects" patented technology

The invention discloses a high-performance concrete material adapted to an assembled pavement and a preparation method thereof, and the concrete per unit volume is prepared from the following components in parts by weight: 100-220 parts of cement, 200-440 parts of fly ash, 10-30 parts of silica fume, 20-60 parts of glass beads, 10-30 parts of rubber powder, 100-200 parts of fine aggregate, 7-16 parts of a water reducing agent, 8-15 parts of a thickening agent and 0-6 parts of PVA fiber. And 1-8 parts of magnesium chloride hexahydrate, wherein the water cement ratio is 0.2-0.4. And carbonizing and curing the fiber reinforced concrete slurry to obtain the high-performance concrete material. The fiber reinforced concrete is subjected to carbonization curing to generate natural aragonite fibers, the toughness of the concrete is improved, and concrete with different aragonite contents can be prepared by adjusting the content of the magnesium chloride hexahydrate reagent, so that different toughness is achieved. According to the present invention, the fabricated pavement with characteristics of small thickness, toughness and strength meeting mechanical requirements of different working conditions during transportation, hoisting and service can be prepared, green maintenance and rapid maintenance can be achieved, and rapid development and large-scale application of the fabricated pavement can be promoted.

The invention belongs to the technical field of battery materials, and discloses a nitrogen-doped asphalt-based hard carbon material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out oxidation treatment on asphalt to obtain oxidized asphalt; carrying out nitrogen doping treatment on the oxidized asphalt to obtain an asphalt hard carbon precursor; carrying out pre-carbonization and carbonization treatment on the asphalt hard carbon precursor to prepare an asphalt-based hard carbon material; a nitrogen-containing compound is used in the nitrogen doping treatment process, and the nitrogen-containing compound comprises pyridyl and / or pyrrolyl, and hydroxyl and / or aldehyde group. According to the preparation method disclosed by the invention, the asphalt is subjected to oxidation treatment, so that the asphalt contains rich oxygen-containing groups (such as hydroxyl and aldehyde group), and pyridine nitrogen (or pyrrole nitrogen) is introduced into the oxidized asphalt through aldol reaction in the nitrogen doping treatment process, so that the capacity and rate capability of the asphalt-based hard carbon material are improved.

The invention discloses a large model-based livestock and poultry manure treatment technology question-answering system and a use method thereof, and relates to the technical field of environmental protection and governance. In the system, firstly, a trained word segmentation model is used for performing word segmentation processing on a retrieval question input by a user; then retrieval is conducted in a text database and a vector database according to a word segmentation result, the retrieved text blocks are aggregated and deduplicated to obtain a plurality of retrieval text blocks highly related to a retrieval problem, and then large-model cue words are generated in combination with a cue word template; and finally, outputting a reply result according to the trained livestock and poultry manure treatment technology intelligent question and answer model. According to the method, the defects existing in a traditional general field large language model are overcome, the large language model can fully and accurately understand the retrieval problem of a user, a scientific and detailed reply result can be given, intelligent question answering of livestock and poultry excrement treatment knowledge is achieved, and the method has important significance in promoting development of an environment protection and treatment technology.

The reciprocating motion mechanism of the fascia gun is equivalent to a machine core and is arranged in a shell of the fascia gun, one end of a piston is used for being connected with a massage head, the end, away from the massage head, of the piston is connected with a movable sliding block, and the end, away from the piston, of the movable sliding block is rotationally connected with a transmission shaft. The axial line of the transmission shaft coincides with the axial line of the piston, the transmission shaft rotates in the axial line direction so that the movable sliding block can drive the piston to move back and forth in the axial line direction, a linear transmission structure is adopted, a shell of the fascia gun does not need right-angle turning treatment, the shape is more concise and graceful, and occupied space is small. An eccentric wheel and a bearing connecting rod do not need to be additionally arranged for driving, the overall size of the shell is relatively reduced, noise is improved, the use experience of a user is improved, meanwhile, abrasion caused by large rotational inertia of the eccentric wheel is avoided, and the service life of a product is prolonged.

The present invention discloses a polyacrylonitrile-based carbon fiber and a preparation method thereof, and relates to the technical field of carbon fiber. A polymerization stock solution is prepared by continuous polymerization with acrylonitrile as the main monomer, and a homogeneous polymerization solution is obtained after de-monomerization and degassing. The homogeneous polymerization solution is spun by a dry-wet-jet molding process, and fiber precursors are obtained after washing, hot water drawing, drying, steam drawing and oiling in sequence. The fiber precursors are sequentially pretreated, pre-oxidized, and multi-stage carbonized to obtain carbonized fibers; the carbonized fibers are sequentially surface treated, washed, sized, and dried to obtain carbon fiber products. The present invention can prepare a new generation of carbon fiber products with comprehensive advantages of strength and modulus through the improvement of the overall process, laying a foundation for its subsequent wider application in multiple technical fields and multi-composite molding process systems.

The invention discloses a Fresnel coil electromagnetic ultrasonic transducer for defect and stress detection and a detection method, and belongs to the technical field of ultrasonic flaw detection and stress detection. The problems that an existing ultrasonic method is low in detection efficiency and poor in precision, and corrosion can be caused to the surface of large precise rotary equipment are solved. Comprising a sealing cover, a shell and a printed circuit board which are sequentially and fixedly connected from top to bottom, a Fresnel annular coil is machined on the upper surface of the printed circuit board, a permanent magnet is arranged in the shell, and the permanent magnet and the Fresnel annular coil are arranged in an up-down opposite mode. Ultrasonic focusing is achieved through the Fresnel coil, the signal strength is improved, the detection area is reduced, the spatial resolution of stress detection is improved, meanwhile, the electromagnetic ultrasonic technology does not corrode the surface to be detected of the large precision rotary equipment, a coupling agent does not need to be smeared, and the detection efficiency is effectively improved.

The invention relates to an image recognition method for an electric power inspection scene, and the method comprises the steps: obtaining electric power inspection image data, carrying out the data enhancement processing, achieving the data amplification through a generative adversarial network, constructing an electric power inspection image data set through marking, and carrying out the sample balance processing; for a convolutional neural network model trained on a large-scale data set in advance, performing fine tuning by using an electric power inspection image data set; the method comprises the following steps: acquiring a to-be-identified electric power inspection scene image, inputting the image into a convolutional neural network model, extracting multi-scale features of the image in a residual connection mode, obtaining high-dimensional fusion features through cascade fusion or weighted fusion, improving the attention on a region of interest through an attention mechanism, and performing identification by using multiple models. And fusing the recognition results of the plurality of models to obtain a final image recognition result. Compared with the prior art, the method has the advantages of being good in performance, low in false detection rate and omission ratio and the like on power inspection image data with small volume.

The application belongs to the technical field of polymer materials, and particularly relates to a nylon powder and a preparation method and application thereof. The nylon powder comprises high-viscosity nylon resin, low-viscosity nylon resin and an additive, wherein the relative viscosity of the high-viscosity nylon resin is 1.75-1.85, the relative viscosity of the low-viscosity nylon resin is 1.55-1.65, the mass ratio of the high-viscosity nylon resin to the low-viscosity nylon resin is 10:1-3, and the additive comprises an antioxidant. The high-viscosity nylon resin and the low-viscosity nylon resin with specific viscosities are compounded and used in proportion, the high-viscosity nylon resin serves as a skeleton of a hydrogen storage bottle inner container and provides mechanical property support, and the low-viscosity nylon resin provides fluidity and ensures few defects in bottle forming. The use of the nylon powder of the application improves the mechanical property of the hydrogen storage bottle inner container and the integrity of the inner container structure, and a stable and defect-free type IV nylon hydrogen storage bottle inner container is prepared.

The invention relates to the technical field of auxiliary agents for BC battery manufacturing, in particular to an auxiliary agent for BC battery manufacturing and an application method of the auxiliary agent. The invention relates to an auxiliary agent for manufacturing a BC battery. The auxiliary agent is prepared from the following substances in percentage by mass: 0.3-10% of a high-efficiency dispersant; 0.2%-15% of a surfactant; 0.1%-15% of a stabilizer; 3%-8% of an efficient nucleating agent; 0.1%-5% of a protective agent; and the balance of ultrapure water. According to the auxiliary agent for manufacturing the BC battery, the basic composition of the auxiliary agent for manufacturing the BC battery is optimized, and the protection of the n-poly surface and the p-ply surface of the back surface of the compatible silicon wafer is ensured by adding the protective agent and protecting the n-poly surface and the p-ply surface. After the auxiliary agent for manufacturing the BC battery prepared by the technical scheme of the invention is used, the difference between the textured edge and the middle area of a silicon wafer can be obviously reduced, so that the textured uniformity of the edge wound-plating area and the non-wound-plating area is further improved.

The present invention is a method for manufacturing a surface-treated gas-phase-process silica particle, the method including steps of: (A1): adding 1,3-divinyl-1,1,3,3-tetramethyldisilazane to a raw material gas-phase-process silica particle and introducing a vinyldimethylsilyl group on a surface of the raw material gas-phase-process silica particle to obtain a preliminarily treated silica particle; and (A2): adding hexamethyldisilazane to the preliminarily treated silica particle and introducing a trimethylsilyl group on a surface of the preliminarily treated silica particle to obtain a surface-treated gas-phase-process silica particle. This provides: a surface-treated gas-phase-process silica particle that contains few coarsely aggregated particles and that can impart good flowability when added into a toner; a manufacturing method therefor; and an external additive for a toner including the surface-treated gas-phase-process silica particle.

The application relates to the technical field of sulfide catalytic materials, in particular to a modified high-performance cobalt-based sulfide catalytic material, a preparation method and application thereof, which comprises the following steps: S1. stirring cobalt nitrate hexahydrate and zinc nitrate hexahydrate dissolved in a modified solvent; S2. adding a precursor modifier drop by drop into the mixed solution for stirring, centrifuging and transferring to a drying box to obtain a modified precursor; S3. placing the modified precursor downstream of a tube furnace, placing a modified sulfur source upstream of the tube furnace, introducing inert gas for calcination, and finally obtaining the modified high-performance cobalt-based sulfide catalytic material after the temperature is reduced to room temperature. The synergistic effect of the modified solvent, the precursor modifier and the modified sulfur source can effectively regulate the electronic structure of the material, increase the surface defects and active sites, greatly improve the ORR / OER dual-function catalytic kinetic rate and reduce the reaction energy barrier. Meanwhile, the Co / CoS heterojunction interface constructed through the synergistic effect of the three can induce interface electron redistribution and strengthen the Co-S bond strength of the system.

The invention belongs to the technical field of nano-catalyst antibiosis, and particularly relates to a zinc-based nitrogen-doped carbon-loaded metal palladium nano-enzyme as well as a preparation method and application thereof. The ZnNC-loaded metal palladium nano-enzyme is prepared by adopting a deposition-precipitation method which is simple to operate, taking ZnNC as a carrier and taking metal palladium nano-particles as an active center. The nano-enzyme has excellent oxidase-like activity, can catalyze O2 to generate hydroxyl free radicals (. OH), singlet oxygen (< 1 > O2) and superoxide anion free radicals (O2 <->) so as to kill bacteria and achieve an antibacterial effect, and has a remarkable antibacterial effect on escherichia coli under an acidic condition.

The present invention belongs to the field of fuel cell technology, and specifically relates to a carbon-wrapped alloy catalyst, a preparation method and application thereof. The preparation method of the carbon-wrapped alloy catalyst comprises the following steps: S1, heat-treating the catalyst under a reducing gas atmosphere, mixing the heat-treated catalyst with a carbonized compound, a ligand compound, a carbonized catalyst, and a solvent, ultrasonically dispersing, stirring, centrifuging, and drying to obtain a powder; S2, annealing the obtained powder under a reducing gas atmosphere, dispersing the annealed powder in an acid solution, heating, filtering, and vacuum drying to obtain the carbon-wrapped alloy catalyst; the catalyst is a platinum alloy catalyst or an alloy catalyst made from a carrier and a metal precursor. The carbon-wrapped alloy catalyst prepared by the present invention has high stability, and can overcome the carrier defects and the problem of insufficient stability caused by high oxygen content in existing high-load alloy catalysts.

The application discloses a kind of network unmanned aerial vehicle inspection achievement automatic back transmission and defect identification method, it is related to power distribution network inspection technical field.The purpose is to solve the problems of low efficiency, fault response lag, data transmission without security and defect identification relying on artificial in traditional manual inspection.The method comprises: unmanned vehicle carries unmanned aerial vehicle and hangar drives to parking point, unmanned aerial vehicle takes off and carries out inspection and collects achievement data;After unmanned aerial vehicle returns, unmanned aerial vehicle platform processes and transmits achievement data to unmanned aerial vehicle management platform;Management platform uses AI image recognition technology to identify defects in data, generates identification results;Finally, management platform synchronizes identification results to power grid digital brain platform, and is associated with equipment operating state storage.The application realizes the full-process automation and intelligentization of distribution network inspection, greatly improves the inspection efficiency and the accuracy of data processing, optimizes the fault response mechanism, and provides strong support for the intelligent operation and maintenance of distribution network line.

The application relates to the technical field of battery materials, and discloses a sodium-philic carbon-based material, a negative-electrode-free current collector, a preparation method of the sodium-philic carbon-based material and a sodium metal battery. The preparation method of the sodium-philic carbon-based material comprises the following steps: providing a mixed solution, wherein the mixed solution comprises carbon source powder, an iron source and a solvent; fully reacting the mixed solution in a protective atmosphere at 160-240 DEG C; obtaining a carbon-loaded sodium-philic material after solid-liquid separation; fully calcining the carbon-loaded sodium-philic material in an inert atmosphere at 700-900 DEG C to obtain a porous sodium-philic precursor; and treating the porous sodium-philic precursor in a reaction gas atmosphere at 400-700 DEG C for 1-3 hours to obtain the sodium-philic carbon-based material. The reaction gas atmosphere is an ammonia gas and inert gas mixed atmosphere or an ammonia gas atmosphere. The material is coated on the surface of the negative-electrode-free sodium metal battery current collector, and can enhance the electrochemical performance of the battery.

The invention provides a zinc-doped or pre-sodium / potassium-zinc-doped hard carbon negative electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: weighing 2, 4-diaminophenol and zinc salt, adding the 2, 4-diaminophenol and the zinc salt into a solvent, and uniformly stirring and mixing; adding a formaldehyde solution for water-bath heating and stirring reaction; and filtering, cleaning and drying the product to obtain a sample, mixing the sample with hard carbon particles, calcining at high temperature, and cooling to obtain the zinc-doped hard carbon negative electrode material. And further, carrying out sodium pre-treatment or potassium pre-treatment by adopting a DMC-Na or DMC-K solution to obtain the pre-sodium / potassium zinc doped hard carbon negative electrode material. The zinc-doped hard carbon negative electrode material has an expanded graphite region and highly developed nanopores, and is high in conductivity; after pre-sodium or pre-potassium treatment, hard carbon surface defects are remarkably improved, an SEI film is formed, side reaction between electrolyte and the hard carbon surface is further isolated, the dynamic performance of the material is remarkably improved, ICE is remarkably improved, and the cycle performance of the material is considered on the basis of dynamics.

The invention relates to a permanent magnet synchronous motor control system, which comprises a position ring, a speed ring and a current ring, the position ring and the speed ring are connected in parallel to serve as a system outer ring, the current ring is a system inner ring, and an output value after the position ring and the speed ring are connected in parallel is an input value of the current ring; and performing parameter setting on the controllers of the position loop and the speed loop through a frequency domain method. A series connection structure of a position ring and a speed ring in a traditional vector control system is changed into a parallel connection structure, system model simplification is carried out on the parallel connection structure, a system block diagram and a transfer function of the parallel connection structure are obtained, and meanwhile parameter setting is carried out on controllers of the position ring and the speed ring through a frequency domain method. The control system has better steady-state performance and dynamic performance; meanwhile, a higher system type is achieved, and steady-state errors do not exist when ramp signals are input; in addition, the control structure has a simpler optimization scheme, and has greater advantages in subsequent performance optimization.

A ketorolac liquid composition, a preparation method therefor, and an application thereof. Provided is a ketorolac liquid composition, comprising the following components: ketorolac tromethamine, a stabilizer, a buffer, an osmotic pressure regulator, and a pH regulator; the ketorolac liquid composition does not contain ethanol; a concentration of ketorolac tromethamine is 0.15 mmol / L-160.00 mmol / L, and the concentration refers to a ratio of a molar amount of the ketorolac tromethamine to a volume of the ketorolac liquid composition. The ketorolac liquid composition does not contain an organic solvent, has stable physical and chemical properties, has less in-vivo irritation, has a lower adverse reactions, is safer and more convenient, can improve medication compliance of patients and the convenience of clinical administration, and has good market prospects.

The application provides a high-capacity and high-rate hard carbon negative electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion battery negative electrode materials. Specifically, biomass shell raw materials are coarsely broken and sieved to obtain biomass coarse powder; the biomass coarse powder is mixed with an oxidizing agent and then pre-oxidized; mechanical pulverization is performed to obtain biomass coarse powder with a D50 of 8-15 microns; the biomass coarse powder is added into mixed acid and heated in a water bath, and then washed with water until neutral to obtain a purified precursor; and finally, the precursor is subjected to staged high-temperature carbonization in a vacuum carbonization furnace. Through specific process parameters, the prepared hard carbon material has a hierarchical porous structure and a suitable graphite microcrystalline layer spacing, and has a low total content of metal impurities; when applied to a sodium ion battery negative electrode, the hard carbon material exhibits a high reversible specific capacity, a high initial coulombic efficiency, and excellent long cycle stability and rate performance.

This invention discloses a method for preparing high-density, low-defect yttrium oxide ceramic materials and their applications, comprising the following steps: (1) preparing ceramic blanks by using high-purity yttrium oxide precursor powder through a molding process; (2) heating the ceramic blanks obtained in step (1) to 800-900 ℃ at 1-5 ℃ / min in an oxidizing atmosphere and holding them for 15-30 h; (3) continuing to heat the material obtained in step (2) to 1080-1150 ℃ at 1-5 ℃ / min in an oxidizing atmosphere and holding them for a shorter holding time than in step (2); (4) cooling the material obtained in step (3) with the furnace to avoid thermal stress-induced cracks, thereby obtaining the high-density, low-defect yttrium oxide ceramic material. This invention improves the density and microstructure uniformity of the material, enhances surface chemical stability and defect repair, strengthens bulk crystallinity and thermal shock resistance, reduces the risk of particulate contamination and extends component life, and the process is energy-saving, environmentally friendly and highly operable.

The present invention relates to a polyvinyl alcohol film, a method for manufacturing the same and an optical film using the same. After being treated with boric acid, the polyvinyl alcohol film has a melting point (Tm) greater than 210°C, and a melting point difference ΔTm between any two locations of the film is less than 3.2°C. The polyvinyl alcohol film having the above characteristics has uniform color after stretching and dyeing, and does not produce uneven dyeing problems such as color blocks or color spots, thereby improving the defects of the polyvinyl alcohol film in manufacturing the optical film and improving the yield of the optical film.

The invention provides a perovskite solar cell, a laminated solar cell, a preparation method and a photovoltaic module. The perovskite solar cell comprises a perovskite layer, a passivation layer and a diffusion inhibition layer, the passivation layer and the diffusion inhibition layer are sequentially stacked on the perovskite layer, the passivation layer is made of an organic ammonium salt containing amino cations, the diffusion inhibition layer is made of an organic molecular compound, and the diffusion inhibition layer is made of an organic polymer. The organic molecular compound has a functional group connected to the tail end of a carbon chain, the functional group is selected from at least one of carboxyl and amino, and the number of carbon atoms in the organic ammonium salt is smaller than that in the organic molecular compound. The service life can be prolonged while the problem of a perovskite layer interface is solved.

Provided is a biaxially oriented polyester film which is used for dry film resist support applications and which has a layered structure of two or more layers, at least one layer containing an inorganic compound having elemental germanium, an organic salt having elemental sulfur, and an organic salt having elemental phosphorus, the atomic content of elemental germanium being 10-30 ppm by weight relative to the weight of the polyester film, the atomic content of elemental sulfur being 10-30 ppm by weight relative to the weight of the polyester film, the atomic content of elemental sulfur being 10-30 ppm by weight relative to the weight of the polyester film, and the atomic content of phosphorus being 10-30 ppm by weight relative to the weight of the polyester film. The atomic content of elemental sulfur is 1-25 ppm by weight, the atomic content of elemental phosphorus is 25-37 ppm by weight, and the total atomic content of metal elements is 1-25 ppm by weight. Provided is a polyester film having a small number of foreign matters and good film-forming properties.

This utility model discloses an injection mold lower mold with a venting and anti-sticking ejection mechanism, relating to the field of injection mold technology. It includes a fixed base plate, a lifting ejection mechanism, and a fixed lower mold. The core mold is equipped with a stacked, sheet-like venting mechanism. Multiple venting plates combine to form a dense venting channel, quickly expelling trapped air from the mold cavity and eliminating air marks and weld lines on the product. The lifting plate, translation slide, guide slider, inclined support rod, and main push rod constitute a coordinated ejection structure. During demolding, the core mold limits the injection molded workpiece by inverting and flipping the edge to prevent sticking and deformation. The inclined support rod provides stable guidance, reducing wear and jamming. The venting mechanism is easy to disassemble and assemble; the blocking venting plate can be replaced individually without modifying the product or gate. It is compatible with various automotive injection molded parts with inverted edges, broadening the process window, improving yield, and reducing mold maintenance time.

The invention discloses a lanthanum element strengthened rhenium alloy material and a preparation method thereof, which relates to the technical field of rhenium alloy materials. The lanthanum element strengthened rhenium alloy material comprises the following components by mass percentage: 5-10wt% tungsten, 1-3wt% hafnium, 0.1-0.3wt% osmium, 1-3wt% gallium, 0.05-0.15wt% niobium, 0.01-2wt% lanthanum oxide, 0.003-0.008wt% other rare earth elements, 0.001-0.003wt% nanofiller, and the balance is rhenium and other inevitable impurities. The lanthanum element strengthened rhenium alloy material disclosed by the invention has high high temperature strength, high high temperature creep resistance, low thermal expansion coefficient, and good bending resistance.

This invention relates to a blank board testing system and method for Mini LED substrates, used for conducting continuity tests on the Mini LED substrate circuitry before chip packaging. The blank board testing system includes a Mini LED substrate, a blank board testing module, and a result display unit. This invention employs a method where the control unit for controlling the test path and the Mini LED substrate circuitry under test are contactably connected to any corner pad in a matrix of pads via a substrate connector to perform continuity testing. A single, simple operation allows for one-click testing of an entire substrate, resulting in short testing time and high efficiency. Furthermore, this connection control method is adaptable to all products using fully connected matrix pads, saving on personnel training costs and fixture development costs. In addition, this invention uses a storage and analysis unit to record the continuity test results of multiple Mini LED substrate circuits for overall analysis and visualization, facilitating timely detection and improvement of process defects and saving unnecessary costs.

The application discloses a nano material for targeting and driving resuscitation of dying cells, and a preparation method and application thereof. The nano material is a nano platelet vesicle with phosphatidylserine exposed to the outer layer of the membrane after nanoization and centrifugal treatment. The material is obtained by separating and enriching platelets from peripheral blood, then nanoizing the platelets, and then inducing the phosphatidylserine on the platelet membrane to evert through high-speed centrifugation. The material is used for preparing a medicine for promoting tissue repair, and the medicine promotes resuscitation of dying cells by targeting the dying cells and enhancing the membrane repair capacity of the dying cells, so as to promote tissue repair, including repair of orthopedic, muscle, skin, spinal cord or visceral tissue, especially repair of diabetic foot, skin avulsion injury, ischemic skin flap or spinal cord injury. The resuscitation of dying cells is promoted successfully without intervention of lysis programmed cell death initiation, so that the problems of off-target effect and treatment paradox existing in current mainstream small molecule inhibitor strategy are effectively solved.

The invention relates to the technical field of secondary batteries, in particular to a sodium ion battery, which is characterized in that the compaction density and the ratio of a positive plate and a negative plate are controlled, a PET (Polyethylene Terephthalate) carbon-coated composite aluminum foil is selected as a positive current collector, a ceramic coating is adopted to correspond to the positive plate, and an aramid fiber coating is adopted to correspond to a double-sided coating diaphragm of the negative plate. According to the high-magnification and high-safety sodium ion battery, the defects of the sodium ion battery in the aspects of high-magnification circulation and safety are overcome by utilizing the synergistic effect among the positive plate, the negative plate and the double-sided coating diaphragm, the high-magnification and high-safety sodium ion battery is obtained, and the high-magnification and high-safety sodium ion battery not only can meet high-magnification charge-discharge circulation, but also can pass an acupuncture test.

The utility model relates to foundry technology field especially relates to a vertical directional glass casting mould, it contains four identical size L type cast iron unit, L type cast iron unit is set up as cast iron piece of right angle bending. L type cast iron unit is through end point butt joint or overlapping nested and is pasted and constitutes the mould with longitudinal cavity to make glass liquid can flow in the height direction of pouring opening based on mould. The technical scheme presented in the application not only significantly improves the quality and efficiency of glass casting, but also reduces defects, improves the yield and performance of products. These improvements not only improve the overall quality of the product, but also provide a more reliable material basis for subsequent processing and application, with wide application prospect and significant economic benefits.

The invention discloses a method for recycling a graphite by-product. The method comprises the following steps: S1, putting the graphite by-product into a closed container; s2, inert gas is introduced into the closed container; s3, vacuumizing the closed container; s4, heating the closed container, sequentially carrying out first heat preservation and second heat preservation, and repeating the steps S2 to S3 in the second heat preservation process; and S5, cooling is carried out after the step S4. According to the preparation method, magnetic impurities can be efficiently removed, so that the purity of a graphite byproduct is greatly improved; meanwhile, the tap density of a graphite by-product can be remarkably improved by optimizing the structure of the graphite material; and by improving the defects of the graphite by-product, the specific surface area is effectively reduced, the first effect is improved, the ID / IG value of Raman is reduced, and the graphite by-product which can only be treated as a waste product originally can be reused.