1139 results about "Materials preparation" patented technology

The invention discloses preheating-free welding maritime work steel with excellent low-temperature toughness and a preparation method of the preheating-free welding maritime work steel, and belongs to the field of steel and iron material preparation. The produced steel plate has good comprehensive mechanical properties through alloy component-secondary rolling-controlled cooling process coupling design, the problem that the strength, plasticity, low-temperature toughness and preheating-free post-welding performance of the steel plate are difficult to match and harmonize is solved, the steel plate has ultrahigh-strength plasticity, excellent low-temperature toughness and excellent Z-direction performance, and room-temperature preheating-free welding can be achieved.

The invention provides an electric pile assembly line which comprises a preassembling branch line, a material preparation mechanism, a transfer mechanism and a final assembly branch line, the preassembling branch line is adjacent to the final assembly branch line, the material preparation mechanism is arranged at one end of the final assembly branch line, the transfer mechanism is located between the final assembly branch line and the material preparation mechanism, and the material preparation mechanism is used for storing diaphragms, bipolar plates and sealing gaskets. The preassembled branch lines are used for assembling the liquid flow frames, the partition plates and the blankets to form electrodes; the transfer mechanism is used for transferring the diaphragms, the bipolar plates, the sealing gaskets and the electrodes on the adjacent preassembled branch lines to the final assembly branch lines so as to stack the diaphragms, the bipolar plates and the sealing gaskets to form an electric pile. According to the invention, the distances between the transfer mechanism and the material preparation mechanism, the general assembly branch line and the adjacent pre-assembly branch line are equivalent, so that bipolar plates, sealing gaskets and diaphragms on the material preparation mechanism and electrodes on the pre-assembly branch line can be well transferred and stacked on the general assembly branch line to form an electric pile, the space layout is reasonable, the occupied production space is small, the cost is reduced, and the production efficiency is improved. The production efficiency is improved.

The invention provides a parameter monitoring method and system in a composite material preparation process based on optical fiber sensing, computer equipment and a medium, and belongs to the field of composite material detection. Center wavelength signals in the resin diversion stage are continuously collected through optical fiber strain sensors in a distributed optical fiber grating sensing array, and the distributed optical fiber grating sensing array is embedded into the multiple layers of dry carbon fiber cloth in the fiber preform in advance; the flowing position and time of the resin in the fiber prefabricated body are determined according to the minimum value of the central wavelength signal offset in the resin flow guide stage, and the flowing front edge of the composite material is constructed according to the flowing positions and time of the resin corresponding to the optical fiber strain sensors in the fiber prefabricated body. According to the method, the change of the structure state of the composite material in the resin diversion process can be continuously monitored in a complex variable-temperature environment, and the accurate monitoring of the three-dimensional resin flowing front edge in the composite material liquid forming process is realized.

The invention discloses a wire rod for 2000MPa-level prestressed steel with the large specification of 15mm and a preparation method of the wire rod, and belongs to the technical field of metal material preparation and metal pressure processing. The invention aims to develop a 15mm large-specification high-performance prestressed steel wire rod with a novel component system and a matched production process thereof, the tensile strength of the wire rod is greater than or equal to 1200MPa, and the percentage reduction of area (after aging) is greater than or equal to 30%; the product can be used as a large-specification high-strength high-speed rail plate prestressed steel wire and a 1960-2000MPa-grade high-performance prestressed steel wire and a steel strand. According to the method, the technological process of molten iron pretreatment, converter smelting, LF refining, RH refining, square billet continuous casting, casting billet slow cooling pit slow cooling, casting billet heating, high-pressure water descaling, controlled rolling and controlled cooling and PF line heat preservation channel slow cooling and a complete and controllable production process system are adopted; and the harsh requirements of large-size high-performance prestressed materials of modern important projects on the performance of the wire rod are met.

The invention provides a method for preparing a high-performance silicon nitride ceramic ball based on a pressure modulation sintering technology, and relates to the field of functional ceramic material preparation, and the method comprises the following steps: 1, preparing a green body; 2, PMS sintering is carried out; step 3, cooling; traditional high-performance silicon nitride ceramic balls (the relative density is required to be larger than 99%, the Vickers hardness is required to be larger than or equal to 1500 kgf / mm, the bending strength is required to be larger than or equal to 920 MPa, and the fracture toughness is required to be larger than or equal to 6.0 MPa.m / ) are mainly prepared through a two-step process of normal pressure / air pressure sintering (GPS) and hot isostatic pressing (HIP). Although high densification of the material can be realized, the method has the problems of complicated process flow, high energy consumption, long production period, high equipment occupancy rate and the like.

The invention provides a high-dielectric low-loss ceramic composition as well as a preparation method and application thereof, and relates to the technical field of functional ceramic materials, the high-dielectric low-loss ceramic composition comprises a perovskite type compound serving as a main component and an auxiliary component; wherein the perovskite type compound contains a Ba element and a Ti element, and the auxiliary components comprise a first auxiliary component containing an Mg element, a second auxiliary component containing an Nb element, a third auxiliary component containing an Mn element, a fourth auxiliary component containing a rare earth element R, and a fifth auxiliary component containing SiO2. According to the present invention, the ratio of the main components to the auxiliary components is subjected to design optimization, the ratio of the Nb element in the second auxiliary component to the Mn element in the third auxiliary component is adjusted, and the material preparation process parameters are subjected to optimization control, such that the dielectric constant and the temperature stability of the dielectric ceramic material are improved, and the dielectric loss is reduced.

The invention discloses a recycled modified polypropylene composite material preparation system and a resource recovery method, and relates to the technical field of high polymer material science and engineering. The raw material pretreatment module adopts near infrared spectrum classification, multi-stage cleaning, drying and crushing, and the moisture content is controlled to be less than 0.5%; the melt blending module melts the materials at 180-220 DEG C, modifiers and additives are added, and vacuum degassing is performed to remove impurities; adding a reinforcing agent into the modification reinforcing module, and performing ultrasonic dispersion and dynamic vulcanization; the molding processing module is used for manufacturing a product through extrusion, injection molding or calendaring; the quality detection module is used for detecting mechanical and thermal properties; the waste recovery module is used for crushing and melting granulation to realize a closed loop; the intelligent control module uses a PLC to coordinate each module. Integrated treatment of waste polypropylene is achieved, the purity of raw materials and the performance of a composite material are improved, the resource utilization rate is increased through closed-loop recycling, manual intervention is reduced through intelligent control, product stability is guaranteed, economic and environment-friendly benefits are achieved, and high-valued circulation of waste plastic is promoted.

The invention provides a BIM-based pipeline comprehensive arrangement construction method, and relates to the technical field of building construction.The method comprises the steps that (1) modeling is conducted according to specialties, specifically, a Magicad platform serves as basic modeling software, and BIM models of all specialties are systematically established; (2) pipeline integration: combining the professional BIM models into the same space through a Magicad platform; (3) collision detection: performing collision detection on the first pipeline comprehensive model through a Magicad platform; (4) collision optimization adjustment: optimizing pipeline arrangement of the first pipeline comprehensive model according to a collision detection result; (5) design change and entity verification: verifying the consistency of the second pipeline comprehensive model and the site, and optimizing and adjusting the second pipeline comprehensive model according to a verification result and design drawing change; (6) process simulation: carrying out visual simulation on the construction process of the final installation scheme; (7) material preparation and construction; and (8) quality acceptance. According to the scheme, the construction efficiency can be improved, and labor and material cost is reduced.

The invention discloses an additive manufacturing method for in-situ regulation and control of a TiB / TiC titanium-based heterostructure through laser deposition, and belongs to the technical field of composite material preparation. According to the method, laser path planning is carried out based on three-dimensional modeling and layered slicing; the preparation method comprises the following steps: ball-milling and mixing titanium alloy powder, nano boron carbide powder and trace rare earth powder according to a specific proportion, and carrying out vacuum drying; and addition of trace rare earth is beneficial to grain refinement and improvement of reinforcement phase distribution and interface bonding. Under the action of a high-energy laser beam, the mixed powder is fused in an argon protective atmosphere, an in-situ reaction is carried out at the same time, and TiB and TiC reinforced phases are generated; the gradient component design can be implemented in the laser deposition process, specifically, the powder feeding proportion of B4C powder is dynamically controlled through a program, the gradient of the B4C powder is increased from the bottom layer to the surface layer in the direction perpendicular to the substrate, and therefore the gradient heterostructure with the enhanced phase content and performance gradually changed is formed. According to the method, the problems of non-uniform reinforcement phase distribution, obdurability mismatch, plasticity loss and the like in a traditional method are solved, the prepared composite material or gradient component has high strength (the tensile strength reaches 987.66 MPa) and good plasticity and toughness matching, no crack defect exists, and the method is suitable for manufacturing of high-performance parts in the fields of aerospace and high-end machine manufacturing.

The present application relates to the field of door core material preparation, and particularly relates to a heat-insulating and fireproof door core material for security doors and a preparation method thereof, comprising a protective layer, a heat-insulating layer and a core part, wherein the core part comprises a plurality of springs arranged at equal intervals and fixed plates arranged at both ends of the springs; the heat-insulating layer is arranged outside the fixed plates; and the protective layer is bonded to the outside of the heat-insulating layer and is a foamed aluminum plate, which is prepared as follows: S1, cutting the fixed plates and then welding spring fixing bases and fixing buckles; S2, arranging and fixing the springs; S3, weighing the component materials of the heat-insulating layer, adding water and mixing uniformly; S4, based on a core material preparation system, sequentially completing pouring, jarring, smoothing and heat-insulating drying of the two heat-insulating layers after setting; S5, preliminarily determining whether the preparation of the heat-insulating layer meets preset standards according to the measured compressive strength; and S6, bonding the protective layer. On the basis of ensuring the performance of the core material, the present application can also be applied to the door core of security doors with different thicknesses.

The invention relates to the technical field of wave-absorbing materials, in particular to a broadband wave-absorbing material and a preparation method and application thereof. According to the preparation technology of the wave-absorbing material, a non-woven fabric carrier with graded pores and continuous gradient distribution is constructed by virtue of induction of a centrifugal force field, and then the non-woven fabric carrier is placed in a magnetic dispersion liquid system to be subjected to impregnation ultrasonic dispersion load treatment, so that heterogeneous interface structures are constructed on the surfaces and the interiors of fibers, and the prepared material fabric has the characteristics of light weight and broadband wave-absorbing performance; the method is suitable for military and civil high-tech fields such as electromagnetic protective clothing and invisibility. The method has the advantages of short production period, high raw material utilization rate and the like.

The application discloses a composite precipitation strengthening type high-entropy alloy and a preparation method thereof, and belongs to the field of metal material preparation. The high-entropy alloy is composed of Al, Co, Cr, Fe, Ni, Cu, V and Ti elements, and a general formula thereof is Al a Co b Cr c Fe d Ni e Cu f V g Ti h , wherein 2 <= a <= 4, 16 <= b <= 20, 16 <= c <= 20, 16 <= d <= 20, 35 <= e <= 40, 0 <= f <= 3, 0 <= g <= 3, 0 <= h <= 3, and a + b + c + d + e + f + g + h = 100. The high-entropy alloy is prepared through vacuum arc melting and heat treatment, and has excellent mechanical properties. The various metal raw materials used are environment-friendly, the preparation process is relatively safe, and the high-entropy alloy can be industrially produced.

The invention discloses a phosphorus slag ceramsite lightweight thermal insulation concrete structure preparation control system and method, and particularly relates to the technical field of building material preparation, and the method comprises the following steps: collecting ceramsite physical information, establishing a multi-dimensional parameter set, and setting a component mapping rule; ceramsite space configuration is completed according to mapping; the prepared ceramsite is subjected to surface pretreatment and mixed to form preformed concrete, and the preformed concrete is cured after performance evaluation; maintenance is controlled according to a multi-section temperature and humidity linkage path, and whether the next section is entered or not is judged by the trained machine learning model; when the conditions are not met, the control conditions are updated through optimization steps, and judgment is executed again until all the curing processes are completed; according to the invention, the performance matching configuration of the phosphorus slag ceramsite in the structure is realized, and the preformed concrete is maintained after the performance of the preformed concrete reaches the standard; and through path analysis and state judgment, the multi-section curing process is dynamically regulated and controlled, and the performance consistency and control precision of the concrete structure are improved.

The invention discloses a dispersion distribution method for a micro-nano multi-scale mixed SiC particle reinforced phase in an aluminum-based composite material and the composite material, and relates to the technical field of metal-based composite material preparation. The method comprises the following steps: firstly, carrying out ultrasonic cleaning, ultrasonication and two-stage high-temperature oxidation treatment on SiC particles, and generating an oxidation film on the surfaces of the particles; ball-milling and mixing the treated micron and nano SiC particles and micron pure magnesium particles according to a specific proportion, and pressing into a precast block; then preparing an aluminum alloy melt, cooling to a solid-liquid two-phase region, carrying out semi-solid stirring, and adding the preheated precast block; and finally, raising the temperature to be above a liquidus, rewarming, stirring and molding by casting. Through the synergistic effect of ultrasonic physical dispersion, high-temperature oxidation surface modification and magnesium-induced semi-solid stirring, the problems that micro-nano particles are prone to agglomeration, wettability is poor and interface reaction is difficult to control are effectively solved, multi-scale uniform dispersion distribution of a reinforced phase in an aluminum matrix is achieved, and the comprehensive performance of the composite material is remarkably improved.

The invention relates to the technical field of cutting, and discloses an aluminum profile machining and cutting device which comprises a base table, a bearing table is fixedly connected to the top of the base table, cutting tables are symmetrically and fixedly connected to the outer wall of a shaft rod of the bearing table, and a material preparation table is arranged on one side of each cutting table and fixedly installed above the base table. A cutting structure is arranged over the cutting tables, clamping assemblies are arranged on the surfaces of the cutting tables, inclined vibration assemblies are arranged below the two cutting tables, through the inclined vibration assemblies, after cutting is completed, the inclined vibration assemblies drive the cutting tables to rotate in a hinged mode with a bearing table shaft rod as the axis, the ends, away from the bearing table, of the cutting tables are made to incline downwards, and a downward inclined face is formed; in the inclination process, the inclination vibration assembly enables the surface of the cutting table to vibrate through mechanical vibration, chippings are assisted to fall off, the situation that the residual chippings influence the follow-up cutting precision or scratch the surfaces of the pipes is avoided, the pipes and the cutting chippings are efficiently removed through the dual action of gravity and vibration, and the continuous operation efficiency is improved.

A paddle racket manufacturing method comprises a material preparation step, a classification step, an adiabatic step, a cooling step and a bonding step, the material preparation step preparing a plurality of processing components; the classification step classifying each of the plurality of processing components into a pre-adiabatic processing component and a non-adiabatic processing component according to a heating characteristic and a pressurizing characteristic corresponding to a material characteristic of its composition; the adiabatic step applying an adiabatic heating on the pre-adiabatic processing component according to the material characteristic to form a processing component already processed with adiabatic process; the cooling step cooling the processing component already processed with adiabatic process to normal temperature; and the bonding step using cold bonding to connect the processing component already processed with adiabatic process with the non-adiabatic processing component.

The invention relates to the technical field of preparation of polyurea elastomer materials, in particular to a multi-synergistic enhanced polyurea elastomer material as well as a preparation method and application thereof. The material is prepared from a specific component A and a specific component B through a reaction, and a synergistic flame-retardant system, a multi-scale enhancement system and an intelligent protection system are innovatively integrated. A ceramic framework carbon layer is formed through 'phosphorus-nitrogen-silicon' synergy, step-by-step dissipation of stress is achieved through 'nanometer-micrometer' synergy, dynamic long-acting protection is provided through 'self-repairing-hydrophobic' synergy, and the problem that a traditional protection material is single in performance and restricts one another is solved. The preparation method adopts a unique nanometer pre-dispersion and multi-step charging process. Compared with the prior art, the material provided by the invention simultaneously has excellent fireproof and heat-insulating, impact-resistant, wear-resistant and self-repairing waterproof performances, and can fundamentally improve the safety and reliability of a battery pack and a chassis of a new energy automobile.

The invention discloses a method for preparing a C / C-SiC composite material through multi-stage recovery of carbon / carbon composite material processing waste, and belongs to the technical field of C / C composite material preparation. The method comprises the following steps: carrying out multi-stage screening treatment on the carbon / carbon composite material processing waste, and screening and separating short carbon fibers and pyrolytic carbon powder; mixing the screened short carbon fibers and pyrolytic carbon powder with phenolic resin, industrial silicon powder and SiC powder, and preparing a fiber reinforced resin block in a mold pressing manner; and carrying out one-step continuous carbonization and ceramic heat treatment on the fiber reinforced resin block to finally obtain the C / C-SiC composite material. According to the method, high-added-value recycling of the C / C processing waste is achieved, the process is simple, the cost is low, operation is convenient and fast, the problems of resource waste and environmental pollution caused by existing waste treatment are solved, and the prepared C / C-SiC composite material is excellent in performance and can be widely applied to the fields of aerospace, high-end manufacturing and the like.

The invention relates to the technical field of multi-layer material preparation, in particular to a high-light-transmittance weather-proof impact-resistant striped sound insulation board. The problem that transparency, weather resistance and sound insulation effect of a traditional stripe material are difficult to consider at the same time is solved. The light scattering and absorption center is reduced and high transparency and low haze are realized through reactive extrusion of the recycled material, combination of high-temperature adsorption activated carbon, multi-stage high vacuum and deep purification of a reactive decolorizing agent, and matching of transparent dispersion diffusion master batch and a compatilizer. The surface layer adopts the core-shell weather-resistant master batch and the secondary high-energy UV fluorosilicone curing coating for double shielding of ultraviolet and inhibition of photodegradation and yellowing; styrene-maleic anhydride damping resin is introduced into the middle layer, and uniform inclined micropores and asymmetric stripes formed by supercritical CO2 are combined, so that the medium and low frequency sound insulation index is improved; the bottom layer is repaired and guaranteed to be durable in impact resistance by virtue of a core-shell toughening agent and molecular chain extension; the defects of traditional products are overcome, and the service life requirement of sound barriers for expressways and rail transit is met.

The invention discloses a ceramic precursor efficient impregnation and solidification integrated device and method, belongs to the technical field of ceramic matrix composite material preparation, and solves the problems of low production efficiency, large raw material loss and poor impregnation effect caused by step-by-step impregnation and solidification of a ceramic precursor in the prior art. The device specifically comprises an integrated furnace body, an ultrasonic vibration assembly, a vacuum system, a temperature control system and a precursor storage tank, and an objective table for placing a workpiece to be impregnated is arranged in the integrated furnace body. During precursor solution impregnation, the vacuum system extracts air in the integrated furnace body to form negative pressure, and the precursor solution in the precursor storage tank is extracted into the furnace body through the negative pressure to impregnate the workpiece; after impregnation is finished, the workpieces are directly heated and cured in the integrated furnace body, the process of transferring the workpieces from the impregnation tank to a curing furnace is omitted, and the production efficiency is improved; and meanwhile, poor impregnation effect caused by re-permeation of air into pores of the workpiece after the workpiece is in contact with the air in the transfer process is prevented.

The invention discloses construction application and a production method of large-flow super-early-strength concrete at-15 DEG C. The invention relates to the technical field of building material preparation and comprises a production method of the super-early-strength concrete, and the large-flow super-early-strength concrete is prepared from a cementing material, coarse and fine aggregate and an additive, the preparation method has the advantages that the nano silicon dioxide, the deionized water and the silane coupling agent are dispersed, so that the nano silicon dioxide can be fully dispersed in the water to form uniform suspension liquid, and the silane coupling agent and hydroxyl on the surface of the nano silicon dioxide are subjected to chemical reaction; according to the present invention, the dispersion of the nano-silica in the concrete and the binding force with other materials are enhanced, the ultrasonic-assisted operation is performed on the additive mixture, and the ultrasonic cavitation effect can further promote the dispersion and the mixing of the additive molecules, such that the possible agglomeration structure can be broken, and the additives can be uniformly distributed in the system.

The invention discloses a bimetallic composite material preparation method and system based on metal droplet size regulation and control, and belongs to the technical field of centrifugal casting. According to the method, aiming at a bimetal system with a liquid-liquid mixing and dissolving gap, an alloy melt is smelted according to a preset proportion, and then precise control over the size of second metal phase liquid drops is achieved in a casting ladle by regulating and controlling the standing time in combination with a high-temperature and high-speed camera shooting system. Then relevant casting parameters are input into an autonomously derived liquid drop movement speed and trajectory prediction model, the liquid drop position is predicted, and finally the centrifugal rotating speed or the heating power is adjusted through feedback control according to the deviation between a prediction result and a preset trajectory, so that directional preparation of different structures of the bimetal composite material is achieved. The corresponding system comprises a monitoring module, a calculation module and an execution module which cooperatively complete parameter monitoring, calculation analysis and precise regulation and control in the material preparation process. The casting inclusion defect can be reduced, the product quality instability is reduced, and directional preparation of different structures of the bimetal composite material is achieved.

The invention discloses a thin-wall high-thermal-conductivity high-strength C / C composite material fin as well as a preparation method and application thereof, and relates to the technical field of composite material preparation. The fin is of a multi-layer structure and comprises a core layer and multi-layer structure fixing layers which are sequentially arranged on the top face and the bottom face of the core layer in a stacked mode. The fin is prepared by laying the prefabricated layer of the core layer and the prefabricated layer of the structure fixing layer according to a multi-layer structure and then performing pressing, densification and heat treatment; wherein the prefabricated layer of the core layer is orthogonal fiber cloth woven by 1k polyacrylonitrile-based carbon fibers; the prefabricated layer of each structure fixing layer is made of non-woven cloth woven by mesophase pitch-based carbon fibers. According to the manufacturing method, a sandwich type non-periodic mixed layering structure is constructed, so that the yield of the machined thin-wall C / C fins is increased, and efficient manufacturing of the thin-wall high-heat-conductivity high-strength C / C composite material fins is achieved.

The invention discloses a forming method of a composite material flange and a mold thereof in the technical field of aviation structure connecting piece manufacturing. The forming method comprises the steps of mold pretreatment, layered paving design, twisted wire core material preparation and soft mold auxiliary forming. Fiber arrangement is optimized through gradient paving of the R area and spaced arrangement of the flexible gaskets, and the structural stability is ensured in combination with tooth groove lockrand packaging. A stepped heat-seal pressing curing process is adopted, and synchronous compaction of an R area and a plane area is achieved in cooperation with air bag pressurization. The process comprises core material filling verification, vacuum preloading and temperature control demolding, and finally the high-precision flange component is obtained. According to the method, the problems of poor fiber attachment, non-uniform pressure and stress concentration of the R area of the composite material flange are effectively solved through a synergistic process of progressive pre-compaction and stepped heat-sealing pressing curing, so that continuous arrangement of complex curved surface fibers is realized, the internal stress of an interface is remarkably reduced, and finally, a high-quality flange component with a compact structure and uniform performance is obtained.

The invention provides a wear-resistant high-toughness high-chromium cast iron material and a preparation method thereof, and belongs to the technical field of wear-resistant metal material preparation. The high-chromium cast iron material comprises the following chemical components in percentage by mass: 2.80%-3.20% of C, 0.60%-0.85% of Si, 1.60%-2.50% of Mn, 21.00%-23.00% of Cr, 0.30%-0.50% of Mo, 0.30%-0.60% of Ni, 0.20%-0.45% of W, less than 0.08% of both P and S, and the balance of iron and inevitable impurities. The preparation method comprises the following steps: smelting raw materials, pouring, carrying out heat treatment on a green body, carrying out first cooling, and sequentially carrying out thermal refining and second cooling. By adjusting the chemical components and the preparation method of the high-chromium cast iron and heating twice (including heat treatment and thermal refining), high wear resistance and high toughness are kept to the maximum extent.

The invention belongs to the technical field of SiC / SiC composite material preparation, and relates to a preparation method and application of a SiC / SiC composite material V-shaped structural member. The invention discloses a preparation method of a SiC / SiC composite material V-shaped structural member, which comprises the following steps of: primarily shaping a fiber preform by using a V-shaped mold, carrying out vacuum impregnation on the fiber preform by using an impregnation runner arranged on the mold, and forming an interface layer on the surface of the fiber preform through a cracking process to obtain the SiC / SiC composite material V-shaped structural member. The fiber preform is subjected to densification treatment by adopting a densification process of multi-round cyclic alternate treatment of upper mold densification and demolding densification, the densification treatment process can reduce internal stress accumulation in the SiC / SiC composite material forming process, the surface of a finished product is smooth and free of wrinkles, and the appearance is free of buckling deformation. The invention also provides an application of the preparation method of the SiC / SiC composite material V-shaped structural member. The preparation method is used for preparing the SiC / SiC composite material V-shaped structural member or the porous V-shaped structural member.

The utility model discloses a metal accessory machining production line. The metal accessory machining production line comprises a stamping mechanism. The input end of the sharpening mechanism is connected with the output end of the stamping mechanism; the input end of the riveting mechanism is connected with the output end of the sharpening mechanism; the input end of the three-dimensional warehouse is connected with the output end of the riveting mechanism; and the input end of the stock mechanism is connected with the output end of the three-dimensional warehouse. According to the production line, the continuous and automatic machining process of metal accessories from raw materials to finished products is achieved by integrating the stamping mechanism, the sharpening mechanism and the riveting mechanism, the three-dimensional warehouse and the stocking mechanism are arranged, the three-dimensional warehouse is used for storing finished product materials, the material management efficiency of the production line is improved, the continuity and stability of the production process are ensured, and the production efficiency is improved. And meanwhile, the materials can be automatically arranged and stacked according to the preset arrangement through the stocking mechanism, delivery preparation before loading is completed, the production efficiency is greatly improved, manual intervention is reduced, and the error rate is reduced.

The invention discloses a multistage circulation axial partition activated carbon purification process and system and a rotary kiln, and belongs to the technical field of functional carbon material preparation. According to the rotary kiln, the material guide screws are arranged in the feeding cylinder, the discharging cylinder, the inner cylinder and the outer cylinder, the material guide screws of the feeding cylinder and the inner cylinder rotate rightwards, and the material guide screws of the discharging cylinder and the outer cylinder rotate leftwards; a first guide plate is arranged between the outer cylinder and the inner cylinder and close to one end of the feeding cylinder, a second guide plate is arranged in the outer cylinder and close to one end of the discharging cylinder, a first window is correspondingly machined in the cylinder wall of one end of the inner cylinder close to the feeding cylinder, and a second window is correspondingly machined in the cylinder wall of one end of the inner cylinder close to the discharging cylinder. According to the invention, the structure of the rotary kiln is optimally designed, so that sufficient pyrolysis purification of activated carbon can be ensured on the basis of not increasing the length of a reaction zone and the occupied area of equipment, and the cost performance of the whole process is further improved.

The invention provides a manganese zinc ferrite magnetic ring sintering control method and system, and relates to the technical field of magnetic ceramic material preparation, the method comprises the steps of collecting real-time detection data and historical detection data of each collection area in a sintering furnace, constructing a temperature oxygen partial pressure coupling model, training the temperature oxygen partial pressure coupling model by using the historical detection data, and calculating the temperature oxygen partial pressure of the sintering furnace. Inputting real-time detection data into the trained temperature and oxygen partial pressure coupling model, and outputting a prediction result; judging whether the prediction result is consistent with a data range in a preset temperature oxygen partial pressure reference table or not; if yes, no processing is carried out; and if not, performing regulation and control according to the prediction result. According to the method, the temperature and the oxygen partial pressure of each area of the sintering furnace are predicted by building the temperature and oxygen partial pressure coupling model, dynamic adjustment is conducted in time, cooperative control over the temperature and the oxygen partial pressure in the magnet ring sintering process is achieved, the stability of the magnet ring sintering process is improved, and meanwhile the defective rate of the manganese zinc ferrite magnet rings is reduced.

The invention discloses a graphite purification furnace based on a gradient flow-equalizing gas permeation structure and a gas distribution method thereof, belongs to the technical field of high-purity material preparation, and aims to solve the problem of inconsistent product purification degree caused by non-uniform gas flow distribution in a traditional purification furnace. The core is that an annular gas flow equalizing cavity filled with a graphite soft felt is constructed in a heat insulation layer, and gas realizes pressure equalization and preheating in the cavity; micropores distributed in a gradient mode are formed in the inner-layer heat insulation hard felt to serve as a seepage face, natural convection is resisted through the distribution strategy that the upper portion is dense and the lower portion is sparse, and uniform and low-speed seepage of gas from the periphery to the center is achieved. The device also supports partitioned gas inlet and can cooperate with a heating system to realize fine regulation and control of a temperature-atmosphere field in the furnace, and the scheme can significantly improve the product purification uniformity, the gas utilization rate and the process flexibility, and is compact and reliable in structure.