111 results about "Bronze" patented technology

The invention discloses tin-lead bronze and a preparation method and application thereof.The tin-lead bronze comprises, by weight, 5%-11% of Sn, 2%-6% of Pb, 0.09%-4% of Ni, 0.05%-0.3% of P, 0.01%-1% of Zn and the balance Cu and inevitable impurities, the alloy structure of the tin-lead bronze comprises an alpha phase, an alpha + delta eutectoid and elemental Pb particles dispersed and distributed in the alpha phase, the area ratio of the alpha + delta eutectoid is smaller than or equal to 12%, and the area ratio of the elemental Pb particles is smaller than or equal to 10%. The as-cast average grain size of the tin-lead bronze is 20-70 microns, and the difference value delta D between the minimum grain size and the maximum grain size is smaller than or equal to 20 microns. Through improved design of alloy components and microstructures, a cast ingot with a specified structure is obtained by adopting a centrifugal casting process, meanwhile, the problem of dendritic segregation existing in a traditional casting method is solved, and the prepared material meets high requirements of special industries such as aerospace, ships and large engineering machinery.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

Electrical conductor for earthing, comprising at least one metal wire comprising an aluminium core, at least one copper layer cladding said core, at least one coating layer of a metal selected f rom tin, nickel, bronze, brass, zinc, chrome, coating the copper layer. Said at least one coating layer has a thickness of from 2 to 50 pm. Compared to copper, the earthing conductor according to the present invention provides protection against corrosion, is flexible, robust in processing, resistant to bending during installation, provides equivalent performance in terms of melting current and electrical resistance, is about 40% lighter, has lower costs, is equally recyclable but with a different working process that makes it more difficult to recover immediately, thus discouraging theft.

The invention belongs to the technical field of functional materials, and particularly relates to a 1-3 type lead metaniobate piezoelectric composite material and a preparation method and application thereof. The composite material takes lead metaniobate ceramic with a tungsten bronze structure as a one-dimensional piezoelectric phase and takes epoxy resin as a three-dimensional polymer phase. The ratio [lambda] / T of the transverse periodic dimension ([lambda]) of the ceramic column to the thickness (T) of the composite material is 0.1-0.6. The preparation method is characterized in that the ceramic column array is formed through precise cutting, cutting parameters are controlled to achieve the lambda / T ratio, and then resin encapsulation, curing, polishing and electrode preparation are conducted. According to the invention, the electromechanical coupling performance and stability of the composite material at ultrahigh temperature are synergistically improved by selecting the lead metaniobate ceramic with high Curie temperature and combining specific lambda / T structural parameters. The obtained material can still keep good performance at 350 DEG C, the maximum thickness electromechanical coupling coefficient kt can reach 0.35, and the material is suitable for high-temperature acoustic logging and underwater acoustic receiving transducers.

The invention belongs to the field of corrosion fatigue performance, and particularly discloses a milling workpiece corrosion fatigue life prediction model construction method and a process parameter optimization method.The milling workpiece corrosion fatigue life prediction model construction method comprises the steps that a surface quality prediction model is constructed based on process parameters and corresponding workpiece surface states obtained through tests, and the workpiece surface states comprise surface roughness and hardness; introducing a fatigue stress concentration factor and a work hardening ratio into the initial fatigue life model to respectively reflect local stress concentration caused by surface topography and machining surface hardening caused by milling, and performing surface roughness correction and surface hardness correction on the initial fatigue life model; obtaining a fatigue life model related to the surface state of the workpiece and the corresponding corrosion fatigue life; and combining the surface quality prediction model and the fatigue life model to form a corrosion fatigue life prediction model of the milling workpiece. According to the method, corrosion fatigue life prediction and process parameter optimization of the nickel-aluminum bronze milling workpiece can be realized, and important guidance is provided for actual processing.

The invention discloses a bronze ware model casting parting design method and system based on Boolean modeling, particularly relates to the field of digital model casting modeling and simulation verification, is used for solving the problems of parting cutting error accumulation and model block seepage stability loss under the complex morphology of a bronze ware, and provides a model casting parting design method and system based on Boolean modeling by constructing a morphology noise mapping and semantic slicing linkage mechanism. Early recognition of pitting corrosion and back-off areas is achieved, Boolean segmentation is driven through curvature constraint, and a flexible buffer surface is introduced into a danger area to achieve transition; a cross-domain parameter evaluation and adjustment mechanism is formed in combination with multi-scale displacement optimization and physical simulation feedback, high-response parameter write-back is realized through local disturbance search, a full-link linkage path from modeling to casting is constructed, and parting integrity and model block stability are improved.

The application discloses a potassium tungsten bronze-based photo-thermal super-hydrophobic coating and a preparation method and application thereof; the preparation method of the coating is as follows: first organic solvent, a tungsten source and a potassium source are mixed at room temperature, and stirring is carried out under ultrasonic waves until the tungsten source is fully dissolved; the concentration of the tungsten source is controlled to be 15 mg / mL-27.5 mg / mL; reaction is carried out at 160-200 DEG C for 22-26 h; after the reaction is completed, washing and centrifugal separation are carried out, and then drying, grinding and petal-shaped potassium tungsten bronze powder are obtained; then, the petal-shaped potassium tungsten bronze powder is reacted with a hydrophobic modifier, and is added to a resin solution and a curing agent for reaction. The coating of the application can enhance near-light absorption performance and improve photo-thermal conversion efficiency without the assistance of nano-particles such as silicon dioxide, and can realize rapid removal of surface ice droplets.

1. The name of the design product: pot (Xingtuo inlaid with bronze). 2. The use of the design product: for containing liquid. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model belongs to the technical field of tin-phosphor bronze belt production, and particularly relates to tin-phosphor bronze belt rolling. The utility model provides a reel for cold rolling of a high-yield-ratio and high-elasticity tin-phosphor bronze belt, which comprises a winding drum suitable for winding the tin-phosphor bronze belt, and a left baffle disc and a right baffle disc are arranged on two sides of the winding drum; the pressing and holding piece is arranged at the edge of the left baffle disc; the locking position is arranged at the edge of the right baffle disc; during locking, the pressing and holding piece stretches across the winding drum to be matched with the locking position, and the tail end of the tin-phosphor bronze belt on the outermost circle is extruded and locked. The pressing and holding piece is arranged on the left blocking disc, the locking position is arranged on the right blocking disc, the pressing and holding piece stretches across the winding drum and stretches into the locking position by rotating the pressing and holding piece, the tin-phosphor bronze belt on the outermost circle of the winding drum is pressed, the phenomenon that the coiled tin-phosphor bronze belt is loose after the winding disc is taken down from the winding device is avoided, and the winding efficiency is improved. And the production continuity of the tin-phosphor bronze belt is improved.

The invention discloses a cesium-tungsten bronze composite molybdenum disulfide material for photodegradation and a preparation method thereof, the material is formed by compounding molybdenum disulfide powder and cesium-tungsten bronze powder according to the mass ratio of 1: 3-2: 3, a final product is blue black powder, and the preparation method comprises the step of compounding the molybdenum disulfide powder and the cesium-tungsten bronze powder according to the mass ratio of 1: 3-2: 3. The final product is blue black powder, and the preparation method comprises the following six specific steps and conditions: preparing molybdenum disulfide powder, compounding a cesium tungsten bronze coating layer, dissolving a tungsten source in absolute ethyl alcohol, adding a cesium source and molybdenum disulfide powder, adding acetic acid, and performing post-treatment to obtain blue black cesium tungsten bronze compounded molybdenum disulfide photocatalyst powder. The preparation method has the advantages of simplicity, mild reaction conditions, low energy consumption, considerable high degradation efficiency on organic pollutants, promotion effect on full-spectrum photocatalytic degradation, simple process, low cost, suitability for industrial production and the like.

The invention discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming, the method comprises the following steps: by taking a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a compound plate, sequentially laying a base plate, the Q235B steel plate, a support column, the tin-phosphor bronze plate, a protective layer, a fence structure, a low-detonation-velocity rock expanded ammonium nitrate fuel oil explosive layer and an inert layer on an explosion field from bottom to top, and forming the composite plate. And then the tin-phosphor bronze plate and the Q235B steel plate are subjected to metallurgical bonding after high-speed collision by detonating the explosive, the large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is larger than 98%, the interface shear strength exceeds 274 MPa, and the composite plate has the advantages of excellent high strength, wear resistance and the like of tin-phosphor bronze and low cost of Q235B steel.

The invention belongs to the technical field of superconducting material processing, and discloses a magic angle graphene modified niobium-tin superconducting wire and a preparation method thereof. The magic angle graphene is modified on the surface of the core wire of the Nb3Sn superconducting wire prepared by the bronze method, the material can eliminate work hardening of a bronze matrix, and one-time and uninterrupted continuous stretching forming from a composite billet to the final wire is realized. In addition, the Nb3Sn superconducting wire has excellent mechanical performance, superconducting performance and strain tolerance, the magic angle graphene layer can effectively inhibit crack initiation and expansion of the Nb3Sn reaction layer under strain, and the mechanical performance of the wire is improved; the material not only can be used as an additional magnetic flux pinning center, but also can induce formation of finer Nb3Sn grains with tough grain boundaries, so that the critical current density of the wire is remarkably improved; the critical current irreversible strain limit of the Ni3Sn superconducting wire modified by the magic angle graphene is 0.8% and is obviously higher than that of a Ni3Sn superconducting wire prepared by a traditional bronze method.

1. Name of the design product: brown brush (square). 2. Use of the design product: the design product is used for the main tools of seal, Chinese brick, pottery tile, bronze and other gold and stone transmission. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective drawing.

This utility model relates to the field of bronze artifact restoration technology, and discloses a spraying device for surface sealing gel. The device includes a support frame, a first motor fixedly connected to the outer wall of the support frame, a drive shaft fixedly mounted at the output end of the first motor, a rotating ring fixedly connected to the outer wall of the drive shaft, a connecting shaft rotatably connected inside the rotating ring, a connecting bracket fixedly connected to the outer wall of the connecting shaft, fixed shafts rotatably connected to both sides of the connecting bracket, a fixing block fixedly connected to the outer wall of the fixing shaft, a rotating column fixedly connected inside the fixing block, and a spray nozzle fixedly connected inside the rotating column. In this utility model, starting the first motor drives the drive shaft to rotate. Through the cooperation of the rotating ring, connecting shaft, connecting bracket, fixed shaft, fixing block, and rotating column, the spray nozzle rotates and sprays the bronze artifact, ensuring that the sealing gel evenly covers the surface of the bronze artifact, avoiding uneven protection due to uneven spraying.

The present application relates to the technical field of remanufacturing, in particular to a beryllium bronze piston part inner wall damage repairing method, and its specific steps are as follows: S1, defect inspection; S2, electrode rod preparation; S3, electric spark coating repair; S4, cold welding machine remelting; S5, heat treatment; S6, inner hole honing; S7, repair verification; The present application adopts the method of electric spark coating repair + cold welding composite repair, which not only solves the problem of electric spark coating repair layer being not dense, but also solves the problem of difficult wire feeding in the cold welding inner hole repair process, and the specially-made electrode rod solves the problem of shaking of the long electrode rod rotating at high speed in the electric spark coating repair process, the metallographic of the repair layer does not have cracks and un-melted defects, the repair layer is metallurgically combined with the matrix, and the hardness of the repair layer reaches more than 90% of the matrix.

The application belongs to the field of electronic information functional ceramic materials, and specifically provides a modified lead metaniobate piezoelectric ceramic material and a preparation method thereof, to solve the problems of insufficient competitiveness of piezoelectric performance of pure phase PbNb2O6 piezoelectric ceramic, difficulty in obtaining ferroelectric phase, and poor sintering performance, etc. 2x (Nb 2‑2x Zr x Ti x )O6, 0 < x ≤ 0.1, specifically a tetragonal tungsten bronze structure, ion substitution is performed at B sites, Zr 4+ and Ti 4+ are used to substitute Nb 5+ , and each occupies a half of the substitution amount; vacancy doping is performed at A sites, K + is selected to be doped into the A site gap between NbO6 oxygen octahedra (the original Pb 2+ is not substituted); in summary, through A site and B site cooperative doping of the tetragonal tungsten bronze structure lead metaniobate, the modified lead metaniobate ceramic has high piezoelectric performance and high Curie temperature at the same time, especially the d 33 value has obvious competitiveness in this system, and has great application potential in high-temperature sensors, transducers and the like.

Manufacturing glass ceramic materials comprises ceramming a glass to grow a crystalline tungsten bronze phase comprising nanoparticles having a formula MxWO3, where M includes a dopant cation, and where 0<x<1.

The invention relates to the field of bronze ware, in particular to a bronze ware distressing method which comprises the following steps: S1, cleaning the surface of a bronze ware, uniformly coating the cleaned surface of the bronze ware with an etchant, and standing to obtain an oxidized bronze ware; s2, the surface of the oxidized bronze ware is washed until eluate is clear, then the whole oxidized bronze ware is soaked in a sodium bicarbonate solution for 24 h, the pH is 7.5-8, and the rusted bronze ware is obtained; s3, the rusted bronze ware is washed and dried, and the antique bronze ware is obtained; the corrosion inducing agent is at least one of silver nitrate, copper chloride and aspartic acid. According to the method, the surface of the bronze ware is eroded through the corrosion inducing agent, then the basic carbonate aerugo rust layer is formed on the erosion layer of the bronze ware through sodium bicarbonate induction, and finally the antique bronze ware is obtained through washing and drying, so that the antique effect of the surface of the bronze ware can be achieved within a short time; and uniform distribution of the antique layer on the surface of the bronze ware can be ensured.

The application discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming. The method uses a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a composite plate, lays, from bottom to top, a backing plate, the Q235B steel plate, a supporting column, the tin-phosphor bronze plate, a protective layer, an enclosure structure, a low-explosive-speed rock expanded ammonium nitrate oil explosive layer and an inert layer on an explosion field, and then causes the tin-phosphor bronze plate and the Q235B steel plate to collide at a high speed by detonating the explosive, so that metallurgical combination is caused, a large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is greater than 98%, the interface shear strength is greater than 274 MPa, and the composite plate has the excellent high strength, wear resistance and other performances of the tin-phosphor bronze and the low-cost advantage of the Q235B steel.

The application provides a long-life high-elasticity beryllium bronze thin-wall ring processing method, characterized by adopting a C17200 beryllium bronze round bar in a solid solution state for processing, and comprising the following steps: S1, rough processing: rough machining of a blank, and processing the beryllium bronze round bar into a beryllium bronze pipe; S2, solid solution treatment: after the beryllium bronze pipe is bound, it is vertically put into a furnace, kept at 780±20 DEG C for 10-50 min, vertically cooled in water, and the transfer time is less than or equal to 8 s; S3, drawing treatment: the beryllium bronze pipe is drawn; S4, cryogenic treatment: the part is placed in a liquid nitrogen tank, kept at low temperature for a certain time, and then taken out to restore to room temperature; S5, finishing; S6, aging treatment; S7, plasma nanometer polishing; and S8, stabilization. The beryllium bronze thin-wall ring processing method disclosed by the application can meet the requirement of keeping a good service state during long-term pressure rolling of the thin-wall ring, and can meet the requirement of fatigue rotating rolling of hundreds of millions of cycles in an extreme environment.

The invention provides a low-residual-stress ultrahigh-strength titanium bronze thin strip and a preparation method and application thereof, and belongs to the technical field of non-ferrous metal processing and copper alloy materials. The preparation method comprises the following steps: casting Ti and Cu to obtain a cast ingot; and the cast ingot is sequentially subjected to hot rolling treatment, solid solution quenching treatment, deformation heat treatment and tension annealing, and the low-residual-stress ultra-high-strength titanium bronze thin strip is obtained. According to the method, the residual stress of the strip is remarkably reduced while the strength is improved; movement and rearrangement of entanglement dislocation are promoted through tension annealing, but the recrystallization transformation process is restrained by external tension, and precipitation of nanoscale beta '-Cu4Ti, TiFe and Ti2FeCu phases is effectively promoted. Therefore, the strength and residual stress control of the alloy are effectively improved.

The utility model discloses a bronze ware casting is with burning shell intelligence heating device, including support board, the upper surface of support board is installed with drive assembly, the front end of drive assembly is installed with support component, the upper surface of support board is installed with protection component, the inside installation of protection component has heating assembly, the outer surface of protection component is installed with control assembly. The device is through being equipped with electric push rod in heating assembly, and pushes down the movement of heater, thereby can cover the placing plate, can heat the shell that places the upper surface of placing plate, and after heating, through the rotation of driving motor in drive assembly and the threaded rod, thereby can make the moving plate of screwing on the outer surface of threaded rod push support component and move forward, push out the shell after heating, to facilitate staff to take out it, therefore through the device effectively solved the problem that the existing device is inconvenient to take out the shell after heating.

The invention discloses a method for preparing a mother alloy for beryllium bronze from beryllium copper residues, and belongs to the technical field of beryllium bronze preparation. The method comprises the following steps: crushing a filter screen bonding material and a furnace bonding material, and screening to obtain particles; the screened particles of the binding material and the binding furnace material are pressed, and blocky beryllium copper residual materials are obtained; the preparation method comprises the following steps: preparing blocky beryllium copper residual materials and electrolytic copper according to a beryllium copper master alloy to be prepared, and then drying; the dried blocky beryllium copper residues and electrolytic copper are put into a crucible of a vacuum induction melting furnace, gradient heating melting is carried out in a vacuum state, and molten metal is obtained; the molten metal is heated, refined and fully stirred, then protective gas is inflated into the vacuum induction melting furnace to reach the atmospheric pressure, and after standing is conducted, dross on the surface of the molten metal is removed; and the molten metal with the scum removed from the surface is cast into a mold, demolding is conducted after natural cooling, and the beryllium-copper master alloy is obtained. The beryllium content of the mother alloy for beryllium bronze is high, and the preparation requirement of the high-beryllium beryllium copper alloy can be met.

The present application relates to a kind of indium-poor tungsten bronze phase mosaic block assembled composite material and its preparation method, and the indium-poor tungsten bronze phase mosaic block assembled composite material is by In 0.02 WO3 is formed by WO3 compound, there are many tunnels consisting of the interval between tungsten and oxygen atom in the indium-poor tungsten bronze phase mosaic block assembled composite material, and indium ions are randomly distributed on both sides of the tunnel center position.Method: step one, create supersaturated sodium sulfate solution environment;Step two, in the supersaturated sodium sulfate solution environment obtained in step one, add indium nitrate, add NH4Cl hydrothermal reaction;Step three, centrifugation;Step four, sodium tungstate, oxalic acid and ammonium chloride are sequentially added to deionized water, drop into HCL, add the product of step three hydrothermal reaction, centrifugation and washing, finally the indium-poor tungsten bronze phase mosaic block assembled composite material is prepared.The material has high sensitivity to acetone gas, and the working temperature is low.

The utility model discloses a kind of beryllium bronze strip surface passivation treatment equipment, including equipment main body, the top of equipment main body is sequentially provided with surface cleaning groove, passivation treatment pool and flushing groove, the top of equipment main body is fixedly connected with six transmission roller groups, the inside of surface cleaning groove and flushing groove is rotatably connected with two first guide rollers, two second guide rollers are rotatably connected between the inner wall of passivation treatment pool, six transmission roller groups, two first guide rollers and two second guide rollers are provided with beryllium bronze strip body between it.The utility model removes beryllium bronze strip surface oil dirt and residue by alkaline degreasing agent spraying in surface cleaning groove, avoids cross contamination;Combined with large-capacity passivation treatment pool and low-speed transmission roller group, extend passivation liquid contact time to 3-5 minutes (only 1-2 minutes in traditional process), significantly improve passivation film compactness and corrosion resistance;After completing passivation treatment, using deionized water to flush thoroughly, avoid passivation liquid residue.

The utility model discloses a bronze ware quick dewaxing equipment, including the bottom plate, the outer surface fixed connection of bottom plate has two support frames, two the support frame mutual close one end common fixed connection has dewaxing box, the outer surface of dewaxing box is equipped with lifting mechanism, the inside of dewaxing box is equipped with flushing mechanism, the outer surface sliding connection of dewaxing box has the limiting panel. The device utilizes the water inlet pipe set, can conveniently add the flowing hot water of staff to dewaxing box, realizes the small wax of remaining on the object in dewaxing box to carry out the flushing clearance, utilizes the steam engine set, can output steam and through import pipe will steam delivery to dewaxing box, limiting panel can carry out the stratification to dewaxing box, realizes the flow of steam to carry out the blocking, increases the utilization of steam, solved only through the steam and carries out the dewaxing operation, and the object on possibly remaining small wax problem, the cover plate is convenient for staff to install or take out the placing box.

The invention belongs to the field of material preparation, and particularly relates to a metal bar of a gradient laminated heterogeneous fiber structure and a preparation method of the metal bar. The preparation method comprises the following specific steps: respectively cutting a copper plate and a bronze plate into slices; a raw wire of which the base material is austenitic stainless steel is drawn into a microwire. The copper sheets, the microwires and the bronze sheets are alternately stacked and then placed into diffusion welding equipment, and diffusion welding is carried out in an argon shield furnace. And the welded thin plate is further turned up from the edge to the center to be rolled into a rod shape, and then diffusion welding is conducted under the same condition. And wrapping the processed bar with a stainless steel pipe, and then carrying out multi-pass rotary forging and pressing to finally obtain the gradient heterogeneous fiber structure solid bar with a fine grain layer on the surface and coarse grains on the core part. The preparation method is easy to operate, diffusion welding and rotary forging are combined, the bar with the heterostructure is finally obtained, the strength of the alloy bar is remarkably improved, and certain plasticity is reserved.

The application belongs to the technical field of material modeling and simulation, and discloses a method and device for identifying J-C constitutive parameters of manganese aluminum bronze, which comprises the following steps: obtaining the real stress-strain curve of the material through a quasi-static compression experiment, and performing a thermal-mechanical coupling compression experiment under different temperature and strain rate conditions, extracting the stress-strain response under the corresponding state, and estimating the initial parameter set of the model; then constructing stress-strain response verification data through the thermal-mechanical coupling compression experiment; constructing a parameter optimization space based on the initial parameter set, and performing iterative optimization based on the fusion optimization algorithm of the genetic algorithm, the grey wolf algorithm and the particle swarm algorithm; the fitness function is weighted based on variable weights on the basis of the average relative error of the experimental data curve and the fitted data curve, wherein the variable weight is determined according to the fitting deviation at the yield point and the plastic section. The J-C constitutive model obtained by the application can accurately simulate the mechanical behavior of manganese aluminum bronze.