372 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.

According to the preparation method of the high-light-transmission anti-aging cesium tungsten bronze / double-rhenium synergistically-enhanced NIR shielding thin film, a cesium tungsten bronze-rhenium trioxide heterojunction is introduced into prepared NIR shielding powder on the basis of traditional cesium tungsten bronze, and the NIR shielding efficiency of the product thin film is enhanced. And meanwhile, the strength of the film is enhanced by doping a trace amount of elemental rhenium, so that the thickness of the prepared film is lower than that of a commercial NIR shielding film, and the light transmittance of the film is improved. The anti-aging performance of the film is also enhanced by doping the elemental rhenium, and the service life of the film is prolonged. Compared with a commercial NIR shielding film, the finished product film has higher light transmittance and higher NIR absorptivity, and the glass temperature rises to 47-54 DEG C after the film is irradiated for 60 minutes under a 250 W infrared lamp. And the NIR shielding performance of the film is not obviously reduced after 50 times of circulation under an extreme thermal shock experiment at 5-80 DEG C.

The invention belongs to the technical field of energy-saving materials, and discloses a thermal insulation coating energy-saving material, which is prepared from the following raw materials in parts by weight: 90 to 120 parts of waterborne resin, 10 to 25 parts of modified nano cesium tungsten bronze material, 5 to 20 parts of modified nano silicon dioxide, 1 to 10 parts of light stabilizer, 0.1 to 1 part of coupling agent, 0.5 to 3 parts of flatting agent, 5 to 10 parts of wetting dispersant and 0.05 to 0.1 part of defoaming agent. According to the heat-preservation heat-insulation coating energy-saving material disclosed by the invention, the water-based resin is used as a main film-forming material, the modified nano cesium tungsten bronze and the modified nano silicon dioxide are used as nano functional materials, and the light stabilizer is used as an auxiliary material; by utilizing the excellent visible light transmittance and near-infrared light shielding performance of the modified nano-scale cesium tungsten bronze and the high transmittance and infrared barrier performance of the modified nano-silica, the glass can ensure that the visible light transmittance of the glass is 76% or above, meanwhile, 97% or above of infrared light and ultraviolet light are isolated, and the glass has excellent heat insulation and cooling effects.

The invention provides an optical element six-degree-of-freedom adjusting and clamping device and an assembling method, and relates to the technical field of optical instruments. The device comprises a supporting base, a ball head adjusting screw, a cantilever spring mechanism and an elastic opposite ejection mechanism. The bottom of the support base is provided with a triangular layout through hole group. The center of gravity of the optical element is in the triangle. The cantilever spring mechanism and the ball head adjusting screw are combined to control Z-axis displacement and rotation around the X / Y axis, and the elastic opposite ejection mechanism and the ball head adjusting screw are combined to control X / Y-axis translation and rotation around the Z axis. All contact interfaces adopt a spherical surface-plane point contact design, and tungsten steel or phosphor bronze is selected as a material. According to the invention, six-degree-of-freedom independent precision adjustment of the optical element can be realized, the error of a clamping surface is as low as 0.068 mu rad, the structure is compact, and the adaptability is high.

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 relates to the technical field of automobiles, and provides a PVB composite film and a preparation method thereof, laminated glass and an automobile, the PVB composite film comprises a PVB base film and cesium-tungsten bronze composite particles distributed in the PVB base film, each cesium-tungsten bronze composite particle comprises an inner core and a shell layer coating the surface of the inner core, the inner core is made of cesium-tungsten bronze and titanium dioxide, and the shell layer is made of titanium dioxide. And the material of the shell layer comprises polyvinyl butyral. According to the PVB composite film provided by the invention, the material of the cesium-tungsten bronze composite particle shell layer is consistent with that of the PVB base film, so that the compatibility of the cesium-tungsten bronze composite particles and the PVB base film is remarkably improved, the distribution uniformity of the cesium-tungsten bronze composite particles in the PVB base film is favorably improved, and the heat insulation performance of the PVB composite film is greatly improved.

The invention relates to a device for removing an oxide layer on the surface of tin-phosphor bronze before hot rolling treatment, and belongs to the technical field of tin-phosphor bronze surface treatment.The device comprises a supporting structure used for supporting a grinding mechanism, and the supporting structure is provided with a chuck and a driving mechanism which are used in cooperation with the grinding mechanism; a knocking mechanism and a limiting plate which are used for treating tin-phosphor bronze are arranged on one side of the grinding mechanism, and a liquid conveying mechanism used in cooperation with the grinding mechanism is further arranged on the supporting structure. The knocking mechanism comprises a knocking block and a connecting frame arranged above the knocking block, and a mounting shaft for mounting the knocking block is fixed to the bottom side of the connecting frame. After the device for removing the surface oxide layer of the tin-phosphor bronze before hot rolling treatment is used in cooperation with a knocking function, the device for removing the surface oxide layer of the tin-phosphor bronze has remarkable advantages in the aspects of removal efficiency, surface quality, treatment stability, equipment service life, production efficiency and flexibility, environmental protection, energy conservation and the like.

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.

Disclosed in the present application are a preparation method for a bronze-process Nb3Sn superconducting wire, and a superconducting wire. The preparation method comprises: placing a bronze rod into an Nb tube, placing the Nb tube into a bronze tube, and performing rotary swaging, drawing and annealing to prepare a bronze / Nb single core rod; bundling up hundreds of bronze / Nb single core rods in a hexagonal close-packed manner and then coating same with a barrier layer, and then placing the bronze / Nb single core rods into a copper tube to form a final billet; and heating the final billet and then sequentially performing extruding, drawing and intermediate annealing thereon, so as to obtain a bronze-process Nb3Sn superconducting wire having ring-shaped core filaments. By means of the present application, an Nb core filament changes from a solid columnar shape to a hollow tubular shape, thereby increasing the interaction area between Nb and a bronze matrix, increasing the reaction rate of Nb with Sn in the bronze matrix during a phase-formation heat treatment, and shortening the reaction time.

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.

The invention provides a high-strength and high-plasticity titanium bronze alloy and a preparation method thereof, and relates to the technical field of alloys. The preparation method comprises the following steps: smelting and casting prepared raw materials in sequence to obtain a cast ingot; and the cast ingot is sequentially subjected to hot rolling, solution treatment, electric pulse treatment and aging treatment, and the high-strength and high-plasticity titanium bronze alloy is obtained. Cr is added into the titanium bronze alloy, Cr and Ti form a TiCr phase, the strength and conductivity of the alloy are improved, the nucleation of a metastable state strengthening phase is effectively promoted by adopting an electric pulse induced precipitation and aging treatment method, so that the strengthening phase density of the titanium bronze alloy in the aging process is improved, the size distribution of the metastable state strengthening phase is improved, and the strength and conductivity of the titanium bronze alloy are improved. And the formation of a discontinuous precipitated phase is inhibited. The comprehensive performance of the titanium bronze alloy can be greatly improved, the obtained titanium bronze alloy has high strength and high plasticity, and the tensile strength and the elongation can reach 782-889 MPa and 17-35%.

The invention relates to the technical field of remanufacturing, in particular to a beryllium bronze piston part inner wall damage repairing method which comprises the following specific steps: S1, defect inspection; s2, preparing an electrode bar; s3, electric spark coating repair is carried out; s4, remelting by a cold welding machine; s5, heat treatment; s6, honing an inner hole; s7, repairing and verifying; according to the method, a method of electric spark coating repairing and cold welding composite repairing is adopted, the problem that an electric spark coating repairing layer is not compact is solved, the problem that wire feeding is difficult in the cold welding inner hole repairing process is solved, the problem that an overlong electrode bar rotating at a high speed shakes in the electric spark coating repairing process is solved by adopting the specially-made electrode bar, and the welding quality is improved. The metallographic phase of the repair layer does not have cracks and incomplete fusion defects, the repair layer is metallurgically bonded with the substrate, and the hardness of the repair layer reaches more than 90% of that of the substrate of the plate.

The invention belongs to the technical field of copper alloy preparation, and relates to a preparation method of a titanium bronze alloy wire, raw materials comprise the following elements in percentage by mass: 1.75-2.25 wt% of Ti, 0.4-0.6 wt% of Cr and the balance of copper; comprising the following steps: S1, preparing materials; s2, vacuum casting; s3, forging; s4, hot extrusion; s5, drawing is conducted; s6, solid solution treatment; s7, cold wire drawing; and S8, annealing. The titanium bronze alloy wire which is good in strength and plasticity, high in dimensional precision, smooth and uniform in appearance, stable in mechanical property and capable of meeting the requirements of wires for copper alloy welding forming is prepared, the preparation method is simple and suitable for large-scale industrial production, and the production cost is reduced.

A brazed joint that can suppress the decrease in joint strength even when brass (50, 60) containing bismuth instead of lead and stainless steel (10) are joined by brazing with a solder material, and a method for producing the brazed joint are provided.A brazed joint made of stainless steel (10) and brass (50, 60), provided with a layered structure in which stainless steel (10), a first brazing material layer (20), a barrier layer (30), a second brazing material layer (40) and brass (50, 60) are arranged successively in layers, wherein the barrier layer (30) is a layer that blocks the transfer of bismuth in the brass (50, 60) to the first brazing material layer (20) by brazing the stainless steel (10) and the brass (50, 60), wherein the barrier layer (30) contains at least either a brass (50, 60) or a phosphor bronze, and a brazing material from which the first brazing material layer (20) and the second brazing material layer (40) consist is liquid at 680 to 800°C.

To provide a brazed joint which can inhibit reduction of joint strength even when a brass which contains bismuth in place of lead and stainless steel are brazed with a brazing material, and to provide a manufacturing method of the brazed joint.SOLUTION: A brazed joint of stainless steel and a brass includes a layer structure in which the stainless steel, a first brazing material layer, a barrier layer, a second brazing material layer, and the brass are sequentially arranged in a laminar manner. The barrier layer blocks bismuth in the brass from being moved to the first brazing material layer by brazing the stainless steel and the brass to each other. The barrier layer is at least one of brass and phosphor bronze. A brazing material forming the first brazing material layer and the second brazing material layer is a liquid at a temperature ranging from 680 to 800°C.SELECTED DRAWING: Figure 1

The invention discloses a high-strength and high-conductivity iron bronze alloy as well as a preparation method and application thereof. The iron bronze alloy comprises the following components in percentage by mass: 2.1-2.4 wt% of Fe, 0.015-0.1 wt% of P, 0.05-0.15 wt% of Zn, less than or equal to 0.1 wt% of impurities and the balance of Cu, the structure of the iron bronze alloy comprises a matrix phase and a second phase, the second phase comprises particle-shaped Fe3P phases and fibrous Fe-rich phases, the size of the particle-shaped Fe3P phases is 100-150 nm, the diameter of the fibrous Fe-rich phases is smaller than 2 micrometers, and the distance between the fibrous Fe-rich phases is smaller than 10 micrometers. The tensile strength of the iron bronze alloy is 600 MPa or above, the electric conductivity is 70% IACS or above, and the iron bronze alloy has wide application prospects in preparation of vehicle gauge grade IGBT contact pins.

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 utility model discloses a die for bronze drum casting non-abandoned process research, which comprises a non-abandoned bronze drum casting support frame, a non-abandoned bronze drum casting base is arranged inside the upper end of the non-abandoned bronze drum casting support frame, and support legs are fixedly connected at four corners of the lower end of the non-abandoned bronze drum casting support frame. An inner supporting cylinder is clamped to the center of the upper end of the non-residual bronze drum casting base, drum body half molds sleeve the outer sides of the left end and the right end of the inner supporting cylinder, non-residual bronze drum casting outer molds sleeve the left sides and the right sides of the exteriors of the two drum body half molds, and a rotating frame is fixedly connected to the center of the rear side of the upper end of the non-residual bronze drum casting supporting frame. According to the heat dissipation and compaction mechanism, the multiple studs are evenly distributed in the non-residual bronze drum casting outer mold, the internal structure of casting sand is reinforced by screwing the studs, the hollowing phenomenon possibly occurring in the casting process is effectively avoided, meanwhile, the heat dissipation holes and the heat dissipation inner cavities are formed in the inner supporting barrel and the studs, heat dissipation in the casting process is accelerated, and the heat dissipation efficiency is improved. And the cooling efficiency of the casting liquid is improved.

The invention relates to a sliding bearing composite material, comprising a metal support layer and a bearing metal layer (14) applied to the support layer (12) and made of sintered particles of a sinter material (16), wherein the sinter material contains bronze particles and Fe3P particles, wherein the bronze particles consist of a copper alloy of the following composition: 8.0-12.0 wt.% tin, 6.0-11.0 wt.% bismuth, 1.0-4.0 wt.% zinc, optionally phosphorus up to 0.1 wt.%, in particular up to 0.07 wt.%, more particularly up to 0.05 wt.%, optionally impurity-related elements in each case up to a maximum of 0.10 wt.%, and in total at most up to 0.5 wt.%, remainder copper, wherein the proportion of Fe3P particles in the sinter material is 0.5-5.0 wt.%.

The invention discloses a manufacturing process of a chromium bronze contact finger profile for a high-voltage switch, comprising S1, preparing an upward chromium bronze rod, S1-1, weighing 0.6-1.2% of Cr and the remainder of Cu by weight for batching; S1-2, adding the batching in S1-1 into a graphite crucible of an upward continuous casting furnace for melting, and maintaining the solution temperature at 1150-1350° C.; S1-3, performing upward continuous casting on the solution obtained in step S1-2 by a vertical continuous casting machine to obtain an upward cast chromium bronze rod, and then The upward cast chrome bronze rod is coiled by a coiler to obtain a coiled chrome bronze rod; S2, continuous extrusion, S3, cold drawing, S4, cut to length, S5, aging heat treatment, S6, post-processing for standby use. The present invention adopts continuous upward casting technology to prepare the chrome bronze rod, and the cast rod is directly stretched into a coil through the subsequent coiling step, which not only has the advantages of smooth appearance and round surface, but also can ensure the production of large length, while taking into account the subsequent processing equipment, effectively improving the manufacturing efficiency of the chrome bronze feeler profile.

1. Name of the design product: Artwork ornament (bronze tripod). 2. Use of the design product: For decoration. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view 1.

The invention relates to the technical field of high polymer materials, in particular to a bronze powder filling modified PTFE composite material and a preparation method and application thereof. The bronze powder filled and modified PTFE composite material comprises bronze powder and PTFE, wherein the bronze powder accounts for 30-50% of the total mass of the bronze powder filled and modified PTFE composite material; the microstructure of the bronze powder is irregular. According to the bronze powder filling modified PTFE composite material, the bronze powder material with a certain proportion and an irregular microstructure is filled into the polytetrafluoroethylene resin, so that the friction and wear properties of the PTFE composite material are effectively improved, and meanwhile, the mechanical properties of the PTFE composite material subjected to filling modification in multiple aspects are remarkably improved.

Access control hardware for a door generally includes an exterior trim, an interior trim, and a plurality of lockset components housed within a cross-bore through the door. At least one of the plurality of the lockset components is a fire-rated component comprised of a fire-resistant material, such as steel or bronze. The fire rated component is configured so that at least one elongated component extending between the exterior trim and the interior trim extends through at least one fire-rated component. The fire-rated components interfaces with the at least one elongated component in order to reduce or eliminate space around the at least one elongated component through which light or flames may pass.

The invention discloses a niobium-tin-copper superconducting wire prepared by a powder bronze method and a method thereof, and relates to the technical field of superconducting wire preparation, and particularly to a niobium-tin-copper superconducting wire prepared by a powder bronze method and a method thereof, comprising the following steps: placing an oxygen-free copper rod, tin particles and titanium powder in a crucible, placing the crucible in an electrode induction gas atomization powder spraying furnace, evacuating the crucible, and simultaneously filling the crucible with nitrogen to make its pressure greater than the standard atmospheric pressure, opening the gas atomization powder spraying furnace air inlet valve and exhaust valve after being filled with nitrogen, regulating the heating current to start working, and obtaining micron-level Cu-Sn-Ti alloy powder; the invention fills the region between the pure niobium rod and the pure niobium tube with Cu-Sn-Ti alloy powder, utilizes the excellent fluidity and micron-level size advantage of the powder, improves the plasticity of the Cu-Sn-Ti alloy in the drawing process, and solves the problem of core breakage and wire breakage in the drawing of the traditional bulk Cu-Sn alloy ingot.

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 present invention discloses a high-strength silicon nitride ceramic material and a preparation method thereof, relating to the technical field of ceramic materials and their preparation. The high-strength silicon nitride ceramic material comprises a material layer, a coloring layer, a transition layer and a diamond coating from bottom to top. The ceramic material of the present invention achieves the comprehensive properties of lightweight, high strength and toughness, superhard wear resistance, efficient heat dissipation and corrosion resistance through carbon fiber reinforced phase interface modification, gradient TiCN transition layer design and diamond coating laser microstructuring, and improves the mechanical properties and interface bonding stability of the material. At the same time, it supports multi-color customization, such as black, bronze and yellow. The diversified selection expands the decorative and functional application scenarios of the material. In addition, the introduction of polishing equipment and laser microstructuring technology in the preparation process further optimizes the surface quality and wear resistance, so that the ceramic material has high strength and toughness, corrosion resistance and process controllability.

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.