984 results about "Ultrasonic assisted" patented technology

The invention discloses industrial-grade mixed oil produced by utilizing kitchen waste oil and a preparation method of the industrial-grade mixed oil, and belongs to the technical field of recycling of the kitchen waste oil. The invention relates to industrial-grade mixed oil produced by using kitchen waste oil and a preparation method thereof, and the preparation method comprises the following steps: firstly collecting kitchen waste containing the waste oil, and storing the kitchen waste in a container through special equipment; carrying out screen solid-liquid separation, cleaning grease on the surface of the solid waste, and then carrying out precipitation separation; then carrying out centrifugal separation, chemical cleaning, water washing, acid treatment, dehydration, degumming and metal ion removal on the separated grease and oil-containing liquid; carrying out ultrasonic-assisted multistage ester exchange after enzymolysis optimization, carrying out membrane separation on glycerol and fatty acid methyl ester, and carrying out reduced pressure distillation to obtain a high-purity fraction; carrying out adsorption refining, plasma treatment and supercritical fluid extraction; finally, nano particles are added and blended with additives, efficient recycling of the kitchen waste oil is achieved, and then high-purity industrial-grade mixed oil is prepared.

The invention relates to the technical field of control systems, in particular to a production process optimization control system and method for a heat shrink film. The method comprises the following steps: obtaining resin characteristic parameters of a heat shrink film raw material, and constructing an initial digital twinborn model by using the resin characteristic parameters; acquiring real-time production data, and updating the initial digital twinborn model by using the real-time production data to obtain a complete digital twinborn model; and performing melt ultrasonic-assisted homogenization and two-way stretching process simulation based on the digital twin model, and performing optimization analysis by using a simulation result to generate optimized process parameters. By constructing and updating the digital twinborn model, the melt uniformity and process parameter optimization are accurately controlled, the quality consistency and stability of the thermal shrinkage film are improved, and the product is ensured to meet the mechanical, optical and thermal shrinkage performance requirements.

The invention discloses an ultrasonic-assisted broaching machine tool based on a resonance broach and a design method. The machine tool comprises a broaching machine structure; a groove of the ultrasonic broaching tool is located in the position corresponding to the vibration mode wave crest of the broaching tool; the main piezoelectric actuator device is arranged in the groove; the compensation piezoelectric actuator device is arranged at the position, corresponding to the radial vibration mode, of the ultrasonic broach; the frequency of the ultrasonic power supply and the main power supply is the corresponding frequency when the axial ultrasonic vibration amplitude is maximum and the radial ultrasonic vibration amplitude is minimum under different power supply frequencies, the main driving voltage is determined according to the frequency of the main power supply, the preset broaching maximum speed of the broach and an ultrasonic auxiliary broaching effectiveness coefficient, and the frequency of the compensation power supply is the same as the frequency of the main power supply; the phase difference is 180 degrees, and the compensation driving voltage is the corresponding driving voltage when the ratio of the radial ultrasonic vibration amplitude to the axial ultrasonic vibration amplitude in different driving voltages is smaller than or equal to a preset threshold value. The ultrasonic assistance of the broach which needs to be frequently clamped can be realized.

The invention provides an ultrasonic-assisted red pomelo polyphenol extraction method and application. The polyphenol component in the red pomelo is extracted through the following steps: firstly, performing activation pretreatment on red pomelo dry powder by adopting a low-temperature plasma device, and destroying a cell wall structure so as to improve the accessibility of combined polyphenol; then cellulase, pectinase, hemicellulase and beta-glucosidase are added into a biodegradable deep eutectic solvent to synergistically hydrolyze the cell wall polysaccharide, and combined polyphenol is released; then applying pulse type ultrasonic wave to assist extraction under a low-temperature condition, so that polyphenol is fully dissolved out and enters the eutectic solvent; and finally, carrying out solid-liquid separation to obtain the red pomelo polyphenol extract. Compared with a conventional heat extraction method, the method has the advantages that the extraction rate of the polyphenol of the red pomelo is remarkably increased at a lower temperature, the degradation of the polyphenol is effectively avoided, and the content of the total polyphenol and the antioxidant activity are increased; the method is green and environment-friendly, and can be applied to the health industry as an antioxidant.

The invention relates to the field of building materials, and particularly discloses a coal gangue activation treatment method, prepared calcined coal gangue and application, the treatment method comprises the following steps: pretreatment: crushing and screening coal gangue to obtain coal gangue particles; the coal gangue particles are treated in a eutectic solvent, ultrasonic-assisted treatment is carried out for 2-3 h, pretreated coal gangue is obtained after water washing, the eutectic solvent comprises an HBA component and an HBD component, the HBA component is a mixture of choline chloride and an amide compound, and the HBD component is a mixture of a carboxylic acid mixture and polyhydric alcohol; calcining: calcining the pretreated coal gangue at 400-450 DEG C to obtain calcined coal gangue, the invention also discloses the calcined coal gangue prepared by the method, and the method has the characteristic of realizing coal gangue activation treatment under lower energy consumption.

The invention relates to the technical field of preparation of composite materials, and discloses a method for improving a carbon fiber and aluminum-based resin composite material by utilizing temperature regulation and control, which comprises the following steps: S1, forming a multifunctional interface layer on the surfaces of carbon fibers and aluminum-based materials, and enhancing the interface bonding force of the interface layer through the combination of various nano materials and a layered structure; s2, performing resin impregnation by using a self-temperature-regulating resin system containing temperature-sensitive microcapsules, wherein the system automatically regulates the curing temperature and pressure within a specific temperature range; s3, in the curing process, a multi-stage phase change material is adopted, and internal temperature distribution is regulated and controlled through thermal response behaviors at different temperature stages; and S4, optimizing the flowability and permeability of the resin through an ultrasonic-assisted technology. By introducing the multifunctional nano material and the multi-stage phase change material, the conductivity, the mechanical strength and the thermal stability of the carbon fiber and aluminum-based resin composite material are remarkably improved.

The invention relates to the technical field of aluminum alloy material pressure processing, in particular to an aluminum alloy material for preparing a steel-aluminum composite strip and a preparation method thereof.The aluminum alloy material comprises a steel layer and an aluminum alloy layer, and the aluminum alloy layer comprises, by mass, 100 parts of silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), zinc (Zn) and the balance aluminum and inevitable impurity elements. According to the method, through the laser interface activation and ultrasonic-assisted rolling technology, the interface bonding degree and the microstructure of the steel-aluminum composite material are remarkably improved, and the stability of the steel-aluminum composite material at the high temperature is optimized. And microalloying elements such as scandium (Sc) are introduced, so that the mechanical property and the corrosion resistance of the material are enhanced. The service life is prolonged through a special high-temperature-resistant coating and an accurate heat treatment process, and the surface hardness and corrosion resistance are improved. The advanced processes ensure high performance and high quality of the composite material, and meet the requirements of high temperature and special environments.

The invention discloses a production process of a high-strength anti-corrosion power transmission pole cross arm. The production process comprises the following steps that 1, an anti-SCC aluminum alloy is selected; a trace amount of Sc is added to refine grains, so that the corrosion resistance is improved; cold machining is avoided, and a warm forming process is adopted; 2, aluminum alloy ingot smelting and hot extrusion forming are carried out; 3, T6 solid solution treatment is carried out to improve the strength; 4, the five-axis CNC machining center conducts structural topology optimization cutting; the surface roughness Ra of a key bearing part is less than or equal to 0.8 mu m; an ultrasonic-assisted drilling technology is adopted; step 5, micro-arc oxidation; and step 6, ultrasonic flaw detection and infrared thermal imaging. The 5083-H116 aluminum alloy is combined with Sc microalloying, precision machining and micro-arc oxidation technologies, so that the stress corrosion resistance is improved by 3 times, the fatigue life is prolonged by 2-3 times while the tensile strength of the power transmission pole cross arm is kept to be larger than or equal to 350 MPa, 5000-hour salt mist protection and 30-year maintenance-free are achieved, and the service life of the power transmission pole cross arm is prolonged. The problems of corrosion cracking, short fatigue life and insufficient durability of a traditional product in a harsh environment are comprehensively solved.

The invention discloses a spirulina platense skin extract as well as a preparation method and application thereof, and relates to the technical field of biomedicine. The obscured spirulina skin extract is rich in various active ingredients including collagen family members, viscose protein, C1Q complement protein, fibronectin and the like, and the ingredients complement and promote one another, so that the extract has remarkable effects in the aspects of skin aging resistance, skin injury repair and the like; therefore, the method has a wide application prospect in medicine research and development, cosmetics and functional foods. According to the extraction method of the skin protein of the obtuse spirulina, the sample is subjected to rapid freeze thawing treatment, and the steps of mechanical crushing, ultrasonic-assisted separation and multiple filtration are combined, so that the influence on the activity of the product is avoided, and various compound proteins can be obtained; the pH value of a buffer solution is adjusted, the property of the extract is further optimized, and the extract is more suitable for human skin, is sterile and can be directly used as a product raw material, so that large-scale production is realized, and industrial application of the obtuse spirulina skin extract is promoted.

The invention discloses a double-gradient high-temperature-resistant high-entropy alloy wear-resistant layer and an ultrasonic-assisted laser cladding preparation method thereof, and belongs to the technical field of metal material coatings and surface modification. A proper amount of refractory element W with anti-oxidation and solid solution strengthening effects is introduced into a CoCrFeNi high-entropy alloy coating, an ultrasonic-assisted laser cladding process is adopted, the wear-resistant layer with the grain size and the precipitated phase volume fraction in a gradient structure from exterior to interior is prepared, local stress concentration caused by W aggregation in the laser cladding process is improved, and the wear-resistant performance of the CoCrFeNi high-entropy alloy coating is improved. And the metallurgical bonding strength of the cladding layer and the matrix is improved, and the high-temperature friction and wear resistance of the cladding layer is enhanced. The cladding layer is fine and compact in structure, in gradient distribution, good in mechanical property and excellent in high-temperature wear resistance. The method is easy to operate and low in cost, and an effective method is provided for improving highly coordinated regulation of process-structure-performance and preparing the novel high-temperature-resistant high-entropy alloy wear-resistant layer.

The invention discloses a toluidine red pigment for a building coating and a preparation method of the toluidine red pigment, and belongs to the technical field of pigment synthesis. The toluidine red pigment is prepared from the following raw materials in parts by weight: 75 to 85 parts of toluidine red pigment matrix, 5 to 10 parts of nano titanium dioxide, 2 to 5 parts of nano zinc oxide, 3 to 8 parts of organic silicon modifier and 1 to 3 parts of polysiloxane microcapsule. By optimizing pigment components and adopting efficient preparation processes such as ultrasonic assistance and a micro-channel reactor, the weather resistance, dispersity and stability of the toluidine red pigment for the building coating are remarkably improved, meanwhile, the generation energy consumption is reduced, and the production efficiency is improved.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

The invention discloses a preparation method and application of organic peptide salt in the field of organic peptide salt, and the preparation method comprises the following steps: step 1) extraction of azolla filliculoidas active peptide: performing crushing, enzymolysis or ultrasonic-assisted extraction on azolla filliculoidas raw materials to obtain an azolla filliculoidas active peptide crude extract; and (2) purifying the rumex hanus active peptide. According to the method, the azolla filliculoidas active peptide is subjected to graded purification by adopting an ultrafiltration membrane separation technology, an active peptide component with uniform molecular weight distribution is obtained, and a high-quality raw material is provided for subsequent reaction; organic acid selection and reaction conditions are optimized, the yield and purity of the organic peptide salt are remarkably improved by selecting specific organic acid and optimizing the reaction conditions, ultrasonic-assisted reaction is introduced, the uniformity and efficiency of the reaction are improved through the ultrasonic-assisted reaction, and the stability and functionality of the organic peptide salt are further enhanced. The prepared organic peptide salt is not only suitable for the field of food, but also can be widely applied to health care products and cosmetics, and has remarkable market potential.

The invention discloses a method for extracting chitin from shiitake mushroom residues by using an ultrasonic-assisted deep-eutectic solvent, which belongs to the technical field of polysaccharide extraction and comprises the following steps: preparing dried shiitake mushroom powder, preparing the deep-eutectic solvent and extracting the chitin. According to the method for extracting the chitin from the mushroom residues through the ultrasonic-assisted deep-eutectic solvent, the natural deep-eutectic solvent serves as the solvent, ultrasonic synergistic extraction is adopted, the chitin extraction rate and the product purity are greatly improved, the extraction efficiency is high, the method is easy to operate, the process is easy to control, and the method is environmentally friendly, low in production cost and suitable for industrial production. A new thought is provided for further utilization of mushroom processing waste resources.

The invention belongs to the technical field of additive manufacturing, and particularly relates to a strong electromagnetic pulse-ultrasonic auxiliary electric arc additive manufacturing platform. The platform body is provided with an upper substrate used for providing an initial plane for electric arc additive manufacturing; the water cooling device comprises a water cooling box used for containing cooling water, and the substrate is contained in the water cooling box; the base plate locking clamp comprises a positioning clamping table and a clamping device. The positioning clamping table and the clamping device are arranged on the two sides of the upper base plate and matched to form a fixing structure for fixing the relative positions of the upper base plate and the platform body. The welding gun head is connected with the six-axis mechanical arm and is used for carrying out additive manufacturing on the upper substrate; the clamping device and the welding gun head are arranged on the two opposite sides of the upper base plate in a spaced mode. And the clamping device is partially arranged outside the water cooling box. The clamping device and the welding gun head are arranged on the two sides of the water cooling box respectively, space interference between the clamping device and the welding gun head in the working process can be effectively avoided, meanwhile, a principle heat source of the clamping device can be guaranteed, and normal work of the clamping device is guaranteed.

The invention relates to a soil pesticide residue detection method, system, equipment and medium, and relates to the technical field of intelligent detection.The method comprises the following steps that a to-be-detected soil sample is subjected to ultrasonic-assisted extraction, and a pesticide extracting solution is obtained; separating and detecting the extracting solution by using a liquid chromatograph to obtain a pesticide chromatographic peak, and performing integral calculation on concentration data; calculating the adsorption capacity based on the concentration data, generating a pesticide distribution diagram, and obtaining a pollution range diagram through spatial interpolation; determining a pesticide degradation rate according to the pollution range map, obtaining half-life period data, and further calculating an exposure dose; residual toxicity effect analysis is carried out based on the exposure dose, a toxicity effect score is obtained, a corresponding soil remediation scheme is formulated according to the score, and the technical problem that pollution risk assessment is lagged due to the lack of pesticide adsorption behavior in soil in the traditional technology is solved.

The invention discloses a preparation process of open-cell organic silicon foam, and aims to solve the problems of non-uniform pore structure, low aperture ratio and difficulty in performance balance in the prior art. The process comprises the following steps: optimizing parameters through bubble nucleation, pore connectivity and a mechanical property model; preparing a composite raw material containing polysiloxane, a fluorine-containing monomer, nano silicon dioxide and hollow microspheres; dynamic pressure circulation and ultrasonic-assisted pre-foaming are adopted; performing staged gradient foaming and curing; and carrying out vacuum post-treatment and plasma surface modification. According to the invention, accurate regulation and control of multi-scale pores are realized, air permeability, mechanical properties and hydrophilicity are significantly improved, heat insulation and high temperature resistance are accidentally improved, process efficiency is improved, by-product emission is reduced, and the method is suitable for the fields of aerospace, filtration and biomedicine.

The invention provides a method for cultivating hybrid fries of Jinhu and tiger. The method comprises the following steps: selecting a breeding environment; breeding and ripening female parents; management and control before oviposition; insemination; hatching fertilized eggs; fry rearing. According to the method, in the female parent breeding and ripening stage, specific biological bait is controlled to be fed in stages, feeding of the parent fish can be promoted, growth can be accelerated, in cooperation with specific compound feed in the management and control stage before oviposition, favorable conditions are created for subsequent oviposition, and the quality and number of ova can be improved. Low-frequency ultrasonic assisted fertilization is introduced in the artificial insemination stage, so that the activity of ovum sperms can be obviously improved, and the fertilization rate is increased; in the fertilized egg hatching stage, intermittent ultrasound is assisted, the hatching rate can be increased, and the seedling yield of the golden-tiger hybrid spots can be increased; after hatching, transferring into a specific culture pond, slowly releasing beneficial bacteria, improving the adaptability of the fry, adsorbing harmful substances, reducing pathogenic bacteria, stabilizing water quality, promoting the growth of the fry, improving the survival rate and reducing the malformation rate.

The invention relates to the field of material science and mechanical engineering, in particular to a high-strength aluminum-magnesium-silicon material bolt for a new energy automobile and a preparation method of the high-strength aluminum-magnesium-silicon material bolt. The bolt is made of an aluminum-magnesium-silicon alloy, and the alloy contains magnesium, silicon, manganese, iron, chromium, titanium, scandium, rare earth elements and the balance of aluminum. By optimizing the proportion of rare earth elements (yttrium, lanthanum and cerium) and scandium, grains are effectively refined, the tensile strength, the yield strength and the ductility are improved, and meanwhile the corrosion resistance and the fatigue resistance are enhanced. The preparation method comprises the steps that vacuum melting is combined with the ultrasonic-assisted technology, alloy elements are evenly distributed, and then the material structure is optimized through solution treatment at the temperature of 540 DEG C for 1.5 h and aging treatment at the temperature of 160 DEG C for 8 h. And the surface of the bolt is subjected to anodic oxidation and coated with a composite coating containing silicon dioxide nanoparticles, so that the wear resistance and the corrosion resistance are improved. Through verification, the bolt has the excellent performance that the tensile strength is larger than or equal to 490 MPa, the yield strength is larger than or equal to 440 MPa, the ductility is larger than or equal to 8.5%, and the salt spray test time is larger than or equal to 1500 hours, and the fastening requirement of the new energy automobile under the complex working condition is met.

The invention discloses a method for producing a double-zero aluminum foil by casting and rolling an aluminum slab, the double-zero aluminum foil comprises the following components in percentage by mass: 0.1-0.3% of Si, 0.5-0.9% of Fe, less than or equal to 0.1% of Zn, less than or equal to 0.05% of Cu, less than or equal to 0.05% of Mn, less than or equal to 0.05% of Mg, less than or equal to 0.05% of V and the balance of Al and other inevitable impurities, the single content of the other impurities is less than or equal to 0.03%, and the total amount of the other impurities is less than or equal to 0.1%. The production method sequentially comprises the steps of smelting and preparing aluminum alloy liquid, blowing and refining in a furnace, online degassing and filtering outside the furnace, ultrasonic-assisted cast rolling, aluminum plate coil cold rolling and high-temperature annealing, cold rolling and medium-temperature annealing, aluminum foil coil cold rolling and low-temperature annealing and cold rolling and finished product annealing, and the double-zero aluminum foil is obtained. According to the method, through degassing and deslagging purification inside and outside the furnace and ultrasonic-assisted cast rolling, the cleanliness and the structure component uniformity of the cast-rolled aluminum plate blank are improved, the double-zero aluminum foil is produced through the cast-rolled aluminum plate blank, the technological process is shortened, the number of pinholes is reduced, and the performance, the quality and the yield of the double-zero aluminum foil are improved.

The invention discloses an indoor positioning method based on optical AOA and ultrasonic auxiliary wave distance measurement, a plurality of groups of acousto-optic combined positioning systems are deployed in each indoor direction, each positioning system comprises an ultrasonic transmitter, an ultrasonic receiver, an LED array, a detector array and a microcontroller, and each microcontroller is connected to a terminal; the LED array performs frequency modulation on the optical signals, the ultrasonic transmitter performs pulse modulation on the ultrasonic signals, and the detector array receives the optical signals from the LED array, records the arrival angle when the optical signals arrive and corrects the arrival angle; the ultrasonic receiver receives the ultrasonic signal, and the distance R between the target point location and the ultrasonic receiver is determined by measuring and calculating the time difference of signal propagation; and the position of the target point location in the three-dimensional space is determined according to the corrected arrival angle and the distance R, a self-adaptive dynamic weighting hybrid filtering algorithm is operated, the space coordinate point location of the target point location is obtained, and indoor positioning of the target point location is achieved.

The preparation method comprises the following steps: selecting an abrasive material base material, mixing the abrasive material base material with a silane coupling agent for chemical modification, coating the surface with a modified abrasive material with a functional layer, adding the modified abrasive material into a stirring container, and dispersing to obtain the rough polishing liquid applied to the diamond substrate. An oxidizing agent and a dispersing agent are added into the abrasive dispersion liquid to be stirred to form a polishing solution, the particle size distribution condition of the modified abrasive in the polishing solution is monitored in real time through an online particle size analyzer, and the ultrasonic power and the treatment time are automatically adjusted; adding a pH regulator into the polishing solution by adopting a step-by-step titration method, and adjusting the pH value to 6-9; the polishing solution is filtered through a micro-filtration membrane, undispersed particles and impurities are removed, and a polishing solution finished product is obtained; through the chemical modification and ultrasonic-assisted technology and the real-time monitoring and automatic adjusting process, the dispersity of the grinding material and the uniformity of the polishing solution are remarkably improved, and the particle size distribution of the grinding material is optimized, so that the high-quality polishing solution is obtained.

The utility model relates to the technical field of distillation and purification, in particular to an ultrasonic-assisted natural plant effective component efficient separation device which comprises a separation kettle and a condensation part, a plurality of cooling pipes are fixedly mounted in the cooling cavity, the tail ends of the cooling pipes penetrate through the shell and protrude to the outside, connecting pipes are mounted at the top ends of the cooling pipes, bent pipes are mounted at the top ends of the connecting pipes, and the tail ends of the bent pipes penetrate into the kettle cover and are communicated with the interior of the kettle cover; a box body for collecting condensate is arranged below the shell; high-temperature steam in the kettle body can respectively enter the plurality of connecting pipes and the cooling pipes, the cooling pipes are soaked in the cooling water source in the shell, so that the high-temperature steam can be cooled and quickly liquefied, and the liquefied effective component extracting solution can be intensively discharged through the liquid discharging pipe after being collected by the box body; by means of the design, multiple times of condensation treatment can be conducted at the same time, and the extraction effect and extraction efficiency of effective components of natural plants are improved.

The invention provides a production method of a konjak-series Qingqing diet, and belongs to the technical field of konjak-series Qingqing diet, and the production method comprises the following steps: forming a primary colloid through an accurately controlled hydration process, then introducing soybean and pea proteins, and carrying out thermal gelation treatment to construct a composite gel matrix; functional plant extracts such as curcumin, tea polyphenol and a grape seed extract are added, and the release efficiency of active ingredients is improved by adopting an ultrasonic-assisted extraction technology. The method further comprises the step of adding vitamin complex and calcium and magnesium trace elements, finally, high homogenization of the product is achieved through an innovative tree-shaped multi-cavity homogenization treatment mechanism, the mechanism adopts a minimum spanning tree algorithm to optimize a fluid transmission path, and the technical problem of efficient compounding of the konjak gel and the functional plant extract is successfully solved.

The invention provides a method for processing a micro-channel in glass by femtosecond laser, and belongs to the technical field of laser application, and the method comprises the following steps: carrying out polishing pretreatment, ultrasonic cleaning and drying treatment on a glass material to be processed to obtain a clean glass material with a polished surface; the femtosecond laser is led to the position above the surface of the glass material through a plurality of reflection lenses, and the femtosecond laser is vertically focused in the glass material through a focusing objective lens; the femtosecond laser is treated by utilizing an ultrasonic solution auxiliary means and a time domain shaping device, so that the femtosecond laser is used for preparing a microchannel and a modified region in the glass material; and immersing the glass material with the micro-channel into a KOH solution for etching to obtain a glass sample with a large-length micro-channel. According to the method, femtosecond laser light field shaping and ultrasonic-assisted coordinated regulation and control of parameters are adopted, chemical etching is combined, the machining length and quality of the micro-channel in the glass are effectively improved, and the problems that in the traditional manufacturing process of the micro-channel in the glass, the machining length is limited, and the wall quality of the micro-channel is poor are effectively solved.

An arc additive apparatus, a control method for an arc additive apparatus, and a storage medium are disclosed. The arc additive apparatus includes: an additive welding gun, configured to melt a wire to perform additive manufacturing on a workpiece to be machined; a mechanical vibration device, arranged below the workpiece; an ultrasonic auxiliary device, arranged at a side of the additive welding gun; and a control device, configured to control the ultrasonic auxiliary device to form an ultrasonic field below the additive welding gun, and to control, when welding at a position where additive manufacturing is to be performed by the additive welding gun, the mechanical vibration device to perform a mechanical vibration in different modes separately during and at the end of a welding process of the additive welding gun.

The invention discloses an indoor navigation positioning precision improving method and system based on a filtering algorithm, and relates to the technical field of signal processing. The method comprises the following steps: suppressing signal fluctuation and multipath interference by adopting a Bluetooth positioning technology in combination with a segmented power law regression model and Kalman filtering; ultrasonic-assisted positioning is introduced, the distance is calculated through the time difference between pulses and Bluetooth, and the anti-interference capability is improved in cooperation with temperature correction and spectral analysis; multi-mode dynamic fusion is carried out, when shielding is little, Bluetooth positioning is corrected through high-precision ultrasonic waves, when shielding is serious, Bluetooth data is smoothed through moving average, and positioning coordinates are optimized in combination with a least square method; a base station and a reference object are marked through a vector map, the position of a terminal is dynamically displayed, and positioning reliability is visually presented through an error semitransparent circle; a positioning base station array, a mobile terminal and a rear-end processing module are integrated, and low-power-consumption multi-mode fusion positioning is achieved. The method reduces the positioning error in a complex indoor environment, and is suitable for scenes such as personnel / equipment real-time tracking.

The invention relates to the technical field of cam shaft machining, in particular to a cam shaft turning device based on ultrasonic-assisted machining and a turning method.The cam shaft turning device comprises a turning table, a workbench is arranged at the top of the turning table, two sets of supporting sliding rails are symmetrically and fixedly connected to the workbench, and a feeding motor is arranged on one side of the workbench; the output end of the feeding motor is connected with a threaded driving rod, the end of the threaded driving rod is fixedly connected with a moving seat, the bottom of the moving seat is slidably connected with the supporting sliding rail, one side of the top of the moving seat is provided with a motor seat, and the outer wall of the motor seat is fixedly connected with a mounting seat. The device utilizes the ultrasonic generating unit to carry out ultrasonic-assisted machining on the camshaft, high-frequency vibration, high-frequency impact and friction of a turning tool reduce cutting resistance, the problem of built-up edges caused by the fact that the tool makes contact with a workpiece all the time is avoided, the shape of an actual cutting edge of the tool is prevented from being changed, the machining size precision is guaranteed, and the machining surface roughness is reduced. The surface quality of the camshaft is improved.

The invention discloses a PVDC (polyvinyl dichloride) coating high-brightness BOPP (biaxially-oriented polypropylene) cigarette film and a preparation method thereof, and belongs to the technical field of packaging materials. The smoke film comprises a BOPP (biaxially-oriented polypropylene) base material layer and three layers of gradient PVDC (polyvinyl dichloride) coatings coated on the surface of the BOPP base material layer, wherein the three layers of gradient PVDC coatings sequentially comprise a bottom adhesive layer, a middle barrier layer and a surface functional layer from bottom to top. The bottom adhesive layer adopts PVDC emulsion and an organic silane coupling agent KH-560, so that the binding force with a base material is enhanced; the middle barrier layer adopts high-molecular-weight PVDC and nano silicon dioxide to form a maze effect to provide main barrier performance; and the surface functional layer adopts PVDC, an acrylate copolymer and an antistatic agent, so that the glossiness and the processability are improved. The preparation method adopts an ultrasonic-assisted coating technology, an electrostatic field-assisted leveling technology, a four-stage drying technology and a dynamic tension compensation technology. The prepared product coating is uniform, compact and free of defects, the oxygen permeability is as low as 4.8-9.2 cubic centimeters per square meter per 24 hours per standard atmospheric pressure, the glossiness reaches 86-95 GU, a traditional double-layer packaging structure can be directly replaced, and the cost is reduced by 20% or above.

The invention is suitable for the technical field of ultrasonic diagnosis, and provides an ultrasonic auxiliary diagnosis method and system, and the method comprises the steps: collecting ultrasonic data through an ultrasonic probe; transmitting the ultrasonic data from the ultrasonic probe to a millimeter wave communication module physically separated from the ultrasonic probe through a wired link; the millimeter wave communication module adopts a millimeter wave wireless communication technology to send the ultrasonic data to one of a plurality of millimeter wave access points deployed in the operation environment; transmitting the ultrasound data received by the millimeter wave access point to a remote computing platform through a wired bearer network configured to support deterministic network functionality; and receiving the ultrasonic data transmitted through the deterministic network function in the remote computing platform, performing ultrasonic data processing on the received ultrasonic data according to a preset processing strategy, generating diagnosis auxiliary data for ultrasonic auxiliary diagnosis, and providing the diagnosis auxiliary data for display equipment for display. The problem that existing ultrasonic diagnosis is insufficient in flexibility is solved.