222 results about "Bronze" patented technology

The invention relates to a high-stability bronze powder pigment and a preparation method and application thereof.The preparation method comprises the following steps that copper-zinc alloy coarse powder, stearic acid and a dissolved compound passivator are taken and subjected to ball milling in the nitrogen atmosphere, and a ball milling product is screened, washed and subjected to suction filtration to obtain an amino-functionalized passivated base material; the preparation method comprises the following steps: dispersing SiO2 in anhydrous isopropanol to obtain a reaction system, adding deionized water and a catalyst, dissolving tetraethoxysilane and phenyltriethoxysilane in anhydrous isopropanol, slowly dropwise adding, carrying out a heat preservation reaction, and carrying out suction filtration and washing to obtain a phenyl modified SiO2 coated intermediate; the preparation method comprises the following steps: dispersing a compound stabilizer in anhydrous isopropanol to obtain a mixed system, heating and stirring, dissolving the compound stabilizer in anhydrous isopropanol, dropwise adding into the mixed system, reacting, centrifuging, washing, and drying in vacuum to obtain the bronze powder pigment. The bronze powder pigment disclosed by the invention has excellent oxidation resistance, chemical corrosion resistance and long-term storage stability, and can keep the natural color gloss of metal to the greatest extent.

The invention relates to the technical field of wood manufacturing, in particular to a preparation method of a multifunctional phase-change transparent wood-based composite material, which comprises the following steps: delignification of wood through acidic sodium chlorite, modification with silica sol to obtain a porous template, dipping in a PEG / MMA / AIBN / acetone mixed solution, and hot press molding to obtain a phase-change transparent base material; and finally, coating a PDMS solution containing cesium tungsten bronze and strontium aluminate, and performing low-temperature drying twice to obtain the multifunctional composite material. Silica sol pretreatment is combined with a PEG / MMA impregnation and compression technology, the preparation process is simple and easy to implement, leakage of the phase change material can be effectively prevented, meanwhile, the stability and performance consistency of the composite material are improved, the material is suitable for large-scale production, meanwhile, cesium tungsten bronze and strontium aluminate are introduced, the material is endowed with hydrophobicity, light-emitting characteristics and heat shielding capacity, and the material is suitable for large-scale production. And the intelligent building has the functions of photo-thermal management, self-cleaning and decoration, so that diversified application requirements are met.

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 discloses an LTCC (Low Temperature Co-Fired Ceramic) green tape as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing LTCC formula powder and additive phase powder to obtain mixed powder; mixing the mixed powder, a dispersing agent and a solvent, and performing first ball milling treatment to obtain a first ball milling product; adding an adhesive and a plasticizer into the first ball-milling product, and carrying out second ball-milling treatment to obtain a second ball-milling product; filtering the second ball-milled product to obtain ceramic slurry for tape casting; drying the casting ceramic slurry to obtain an LTCC (Low Temperature Co-Fired Ceramic) green tape; wherein the weight ratio of the LTCC formula powder to the additive phase powder is (50-95): (5-50); the LTCC formula powder comprises ceramic powder and glass powder; the additive phase powder is at least one of hexagonal boron nitride, fluorophlogopite sheets, bismuthate-based tungsten bronze and phosphate glass. According to the LTCC green tape prepared by the preparation method disclosed by the invention, the technical problem that the machinability and the thermal conductivity of an LTCC green substrate prepared by an existing LTCC green tape are relatively poor can be solved.

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 high-strength and high-elongation nickel-silicon bronze strip and a preparation method thereof, and belongs to the technical field of copper-based alloys. The preparation method comprises the following steps: carrying out smelting, refining, two-stage filtering, casting and semi-continuous casting according to nickel-silicon bronze components to obtain a cast ingot, and carrying out hot rolling, annealing, surface milling, rough rolling, first cleaning and brushing, first solid solution, finish rolling, second solid solution, finished product rolling, aging, second cleaning and brushing, straightening, slitting and the like on the cast ingot after heating to obtain the nickel-silicon bronze strip. According to the method, the problem of surface oxidation of the strip is solved, the surface and internal quality of the strip is improved, the strip strength and elongation are improved, the strip yield is increased, and batch production of the large-coil heavy nickel-silicon bronze strip can be met.

The invention discloses a bright annealing process for a copper alloy wire. The bright annealing process comprises the following steps: coating the surface of the copper alloy wire with a composite solid lubricant; the heating / cooling rate of a preheating zone (200-350 DEG C), the heating / cooling rate of a main annealing zone (450-650 DEG C) and the heating / cooling rate of a slow cooling zone (300-450 DEG C) are smaller than or equal to 15 DEG C / s; and an atomized anti-oxidation liquid film is applied to an outlet of the slow cooling area. According to the bright annealing process for the copper alloy wire, the lubricant with specific components is decomposed at a high temperature to form an in-situ protection layer, generation of oxide skin is inhibited in combination with gradient temperature control, and a bright surface with the surface roughness Ra smaller than or equal to 0.2 micron can be achieved without introducing hydrogen or nitrogen. The cost is reduced by more than 40%, and the method is suitable for easily-oxidized copper alloys such as tin-phosphor bronze and cupronickel.

The present invention relates to a method for accurately measuring the chloride ion content of the rust layer on the surface of a bronze object. The method comprises the following steps: mixing water-soluble CS, ALg, and PVA, adding AgNO3 dropwise, stirring to form a homogeneous sol, heating at 50°C to form a cross-linked gel, and obtaining an ALg-CS-Ag hydrogel; preparing artificial rust powder; cutting the hydrogel into small pieces and adding each piece to the rust powder, ensuring that one side of the hydrogel is in full contact with the rust powder for adsorption; simultaneously attaching ALg-CS-Ag hydrogel pieces of the same size to the surface rust layer of a bronze object fragment for adsorption; waiting for 21-27 hours, removing or peeling off the adsorbed hydrogel; soaking the hydrogel in deionized water until it is completely swollen; performing an AC impedance test and fitting the test results to an equivalent circuit to obtain a resistance value; plotting a relationship between the inverse of the resistance value and the chloride ion concentration and performing a linear fit to obtain a fitting function, which is substituted into the fitting function to calculate the chloride ion content of the rust layer on the surface of the bronze object. The method has the advantages of being non-destructive, highly accurate, and convenient and rapid.

The invention discloses a process production method of a tin-phosphor bronze alloy, which is characterized in that the tin-phosphor bronze alloy comprises the following components in percentage by mass: 0.6-0.7% of Sn; the copper alloy comprises the following components in percentage by weight: 0.10-0.25% of P, 0.05-0.10% of Te, less than or equal to 0.10% of other impurity elements and the balance of According to the method, the rod material with the diameter phi of 12.5 mm is produced through 2000 kg horizontal continuous casting. The process route comprises the steps of rod material continuous casting, cold rolling, softening annealing, reverse drawing and peeling, reverse drawing and peeling, softening annealing, reverse drawing and peeling, reverse drawing, softening annealing and reverse drawing of a finished product. According to the process route, the organization structure of the material is converted into a compact cold drawing organization from a coarse as-cast organization. And due to the increase of the tellurium element, the machinability of the material is improved by 15%, and the tin-phosphor bronze material obtained through the process route is compact in structure, fine in grain, high in strength and excellent in comprehensive performance. The tensile strength Rm of the tin-phosphor bronze material is larger than or equal to 800 MPa, the ductility A is larger than or equal to 3%, the machinability is 80% or above, and the electric conductivity is larger than or equal to 14% IACS.

To provide a piezoelectric element that exhibits improved toughness while retaining necessary piezoelectric performance.SOLUTION: A piezoelectric element 10 comprises a piezoelectric body 11 made of a lead-free piezoelectric ceramic composition including a main phase formed of a first crystal phase composed of an alkali niobate-based perovskite oxide, and a subphase including a second crystal phase composed of at least one selected from an M-Nb-O-based tungsten bronze-type compound (where element M is an element having a valence of 1 to 4) and an N-Ti-O-based spinel-type compound (where element N is an element having a valence of 1 to 4), and electrodes 12, 13 in contact with the piezoelectric body 11, wherein the average pore diameter of pores formed in the piezoelectric body 11 is 8 μm or more and 50 μm or less.SELECTED DRAWING: Figure 1

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.

The application provides a preparation method of bronze etching material, which comprises the following steps: preparing a bronze etching blank, homogenizing annealing the bronze etching blank to obtain a bronze etching blank for use; roughing the bronze etching blank for use, rolling the roughed bronze etching blank to a first predetermined thickness and cutting edges, and then annealing to obtain a first blank; first finish rolling and first tempering the first blank to obtain a second blank; second finish rolling and second tempering the second blank to obtain a third blank, and the processing rate of the second finish rolling is 30%-35%; third finish rolling and third tempering the third blank to obtain a fourth blank, and the processing rate of the third finish rolling is 10.0-12.5%; fourth finish rolling and fourth tempering the fourth blank to obtain a first finished product, and the processing rate of the fourth finish rolling is 10.0-15.5%; and cleaning and passivating the first finished product to obtain bronze etching strip material. The preparation method of the bronze etching material can realize rapid forming of the bronze etching material and industrialized mass production.

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 preparation method of a high-stability bronze-process niobium-tin wire, and relates to the technical field of superconducting wire preparation, and the preparation method comprises the following steps: assembling a composite ingot according to a composite structure which sequentially comprises an outer copper matrix, an outer barrier layer, a bronze-based CuNb layer, an inner barrier layer and an inner copper matrix from outside to inside; the composite ingot is sequentially subjected to heat preservation extrusion and multi-pass cold drawing, and a composite wire is obtained; carrying out heat treatment on the composite wire to obtain a Ni3Sn wire; the outer blocking layer and the inner blocking layer are made of Nb or Ta or Nb alloy or Ta alloy or Ta / Nb alternating composite layers. The Ni3Sn wire is prepared by designing a composite structure with double barrier layers and combining heat preservation extrusion, multi-pass cold drawing and heat treatment, the critical current density and the residual resistance ratio of the wire are increased, and then the stability of the wire is improved.

1. Name of the designed product: copper door (thousand miles of mountains and rivers). 2. Use of the designed product: for outdoor doors. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo that best shows the design points: front view.

The invention discloses a large-size electronic packaging shell and a manufacturing method thereof, and belongs to the technical field of electronic packaging. The packaging shell comprises a metal shell body and a metal cover body, wherein the metal shell body is made of 4J29 kovar alloy or carbon structural steel with the carbon content ranging from 0.08% to 1.3%; the sealing insulator is embedded in the bottom of the metal shell and comprises a hollow cylindrical ceramic body, and a tungsten composite metal layer and a metal coating are sequentially formed on the inner surface and the outer surface of the ceramic body from inside to outside; the ceramic body is made of aluminum nitride or silicon nitride; and the leading pin is inserted into the ceramic insulator, and the material of the leading pin is beryllium bronze. According to the packaging shell, the problems of stress deformation of the leading-out end and damage to the sealing area caused by thermal mismatch are avoided, so that the device failure caused by the stress deformation is avoided, and the sealing performance and long-term reliability of the device are ensured.

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 cesium tungsten bronze / titanium dioxide composite coating as well as a preparation method and application thereof, and relates to the technical field of functional coating materials. The method comprises the following steps: (1) respectively preparing a cesium tungsten bronze dispersion liquid and a titanium dioxide dispersion liquid by taking water as a solvent; (2) coating a substrate with the cesium tungsten bronze dispersion liquid in a 3D printing manner, and performing first-stage drying at 90-110 DEG C; (3) spraying a titanium dioxide dispersion liquid on the substrate dried in the first stage; and (4) carrying out second-stage drying at 150-300 DEG C to obtain the cesium tungsten bronze / titanium dioxide composite coating. According to the preparation method, water is used as a solvent, no organic solvent is added in the preparation process, the zero-VOC composite coating is prepared, and the coating has excellent photocatalytic self-cleaning performance and near-infrared shielding and heat-insulating performance.

The present invention relates to the technical field of nut fillet technology, and discloses a fillet adaptive correction mechanism for aluminum-bronze rail machine nuts, comprising a workbench, a positioning frame, and a bronze nut. The positioning frame is fixedly connected to the top of the workbench, the bronze nut is arranged on the top of the workbench, the top of the positioning frame is provided with an angle adaptive component for filleting bronze nuts of different sizes, and the interior of the workbench is provided with a triangular clamping component for fixing the bronze nut. Through the setting of the angle adaptive component, when a hollow tube pushes a driving rod to move, the driving rod pushes a sliding ring to move along a positioning column, and when the sliding ring moves, it drives a rotating rod group to rotate, thereby increasing the gap between the sliding ring and the arc grinding tool, so that the arc grinding tool can grind nuts of larger sizes, thereby ensuring that the filleting process of each nut can be carried out according to preset standards, and at the same time preventing the reduction of production efficiency due to tool replacement.

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 designed product: copper statue (Bafu cover). 2. Use of the designed product: for display and decoration. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo that best shows the design points: perspective view. 5. The bottom surface is not a common surface, and the top view is omitted.

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 disclosure relates generally to solution processed low temperature metal oxide, metal bronze or polyoxometalate materials as charge storage material used in electrochromic devices, charge storage material and electrochromic devices comprising the materials and methods of making and using the same.