29results about How to "High specific strength" patented technology

The invention discloses a three-dimensional woven composite material plate spring type undercarriage prefabricated body profiling forming tool and method. The three-dimensional woven composite material plate spring type undercarriage prefabricated body profiling forming tool comprises a tool frame, a core mold, five clamps and five connecting rollers. The three-dimensional woven composite material plate spring type undercarriage structure prefabricated body comprises nine areas including a first uniform cross-section area, a first variable cross-section area, a second uniform cross-section area, a second variable cross-section area, a third uniform cross-section area, a third variable cross-section area, a fourth uniform cross-section area, a fourth variable cross-section area and a fifth uniform cross-section area, vertical parts are arranged on the two sides of a plate spring, an arc part is arranged in the middle of the plate spring, and the plate spring is of a symmetrical structure. The thicknesses of the fabrics in different areas are different, variable-thickness integrated weaving is adopted in the weaving process, and the fabric areas comprise binding warp yarns and weft yarns. The defects that an existing undercarriage prefabricated body is woven in blocks and cannot be integrally formed can be overcome, better size control and good mechanical performance are achieved, the three-dimensional woven composite material is adopted, and the undercarriage prefabricated body has the advantages of being large in specific stiffness and high in specific strength and further has excellent layering resistance and impact resistance.

The invention belongs to the field of high-strength composite materials, and relates to an attapulgite-reinforced bamboo-based fiber composite material and a preparation method thereof. The raw materials comprise bamboo fibers, water, phenolic resin and a reinforcing improver. And the enhanced improver is selected from chitosan / ball-milled KH550 modified attapulgite powder. The technological process is simple, the attapulgite powder which is an inorganic material is used as a reinforcing agent, and environmental pollution is reduced while the mechanical property of the material is improved. The attapulgite-reinforced bamboo-based fiber composite material provided by the invention is expected to replace part of metal materials such as steel in the fields of energy-saving buildings, transportation and the like so as to be widely applied.

The invention discloses a composite tire and a manufacturing method thereof. The method comprises surface pretreatment of a tire carcass, configuration of a tread treatment agent, and casting and molding the composite tire tread using a unique process. The method has the characteristics of simple manufacturing process and low cost. The manufactured composite tire has a series of outstanding advantages such as good elasticity, low rolling resistance, low fuel consumption, good tread wear resistance, etc., has high cost performance, and is easy to industrialize.

This invention relates to the field of polymer materials technology, specifically to a method for preparing and applying a rigid polyimide foam reinforced with aluminum honeycomb. The method for preparing the rigid polyimide foam reinforced with aluminum honeycomb provided by this invention includes steps such as surface pretreatment of the aluminum honeycomb core material and fixing the pretreated aluminum honeycomb core material into a molding die. The rigid polyimide foam material reinforced with aluminum honeycomb obtained by this invention not only possesses high specific strength and high specific stiffness, but also inherits the excellent properties of polyimide foam such as high temperature resistance, flame retardancy, low smoke, and thermal insulation. The introduction of the aluminum honeycomb skeleton also improves the material's impact resistance and dimensional stability, making it an ideal multifunctional integrated lightweight structural material with promising application prospects.

This invention discloses a method for preparing high-entropy ceramic matrix composites using a reactive infiltration process, belonging to the technical field of ceramic matrix composites. The steps are as follows: at least four single-component carbides are ball-milled and mixed with a carbon source, then dispersed in a dispersion liquid to obtain a slurry; continuous fibers are woven into a preform, and an interface layer and a matrix layer are deposited to obtain a semi-dense composite material; the slurry is introduced through vacuum or pressure impregnation; and a high-entropy carbide matrix is ​​generated in situ and densified by reactive infiltration after embedding with a transition metal and its alloy. This invention solves the problems of long process cycles, high porosity, high cost, and insufficient introduction of high-entropy ceramics in existing processes, achieving rapid densification and improving the material's high-temperature stability, oxidation resistance, and ablation resistance. It is suitable for the large-scale production of thermal protection materials for hypersonic vehicles.

The application belongs to the technical field of metal matrix composite material preparation, and discloses a preparation method of an intracrystalline dispersed TiC and grain boundary network AlN particle configuration reinforced aluminum matrix composite material, which comprises four steps: firstly, a core-shell powder is prepared by depositing an AlN precursor on the surface of aluminum powder; a core double-shell composite powder is obtained by modifying TiC electrostatic adsorption; a low-temperature pulse pre-pressing protective surface film is prepared; and a multi-stage pulse sintering is performed to induce local micro-melting of the matrix, and the composite material with intracrystalline dispersed TiC and grain boundary enriched AlN is obtained by relying on solid-liquid interface separation. The method forms an AlN grain boundary network and TiC intracrystalline dispersion double-mode configuration through process control, the three-dimensional quasi-continuous AlN at the grain boundary can strongly pin the grain boundary and inhibit the grain growth, and the high-temperature strength and creep resistance of the material are greatly improved, the uniformly distributed nanometer TiC in the crystal can hinder the dislocation movement by the Orowan dislocation bypass mechanism, the room temperature strength and toughness are improved, and the two kinds of strengthening mechanisms work together to meet the use needs.

The application discloses a non-welding accessory connecting structure of a wind power tower drum, the wind power tower drum and a construction method thereof, and relates to the technical field of wind power generation equipment. Technical scheme points of the application are as follows: the application comprises a rooting piece for connecting with an accessory structure, a structural adhesive layer coated between a mounting surface of the rooting piece and an inner wall of a tower drum body, and a resin fiber composite material coating layer which is cured and formed to wrap a root part of the rooting piece and is fixedly connected with the inner wall of the tower drum body through the structural adhesive layer. The application can effectively disperse stress generated by accessory load, avoid a welding heat affected zone, welding residual stress and stress concentration at a welding toe, eliminate negative effects of welding of the accessory on fatigue strength of a main steel plate of the tower drum, and make the fatigue strength grade of the main steel plate not be reduced due to connecting details.

The invention relates to a preparation method of a composite wire, in particular to a preparation method of a high-specific-stiffness composite wire. The invention aims to solve the problems of high density, low specific stiffness and low strength of the existing lead. The beryllium / aluminum composite material bar subjected to hot extrusion is subjected to sheathing treatment, a multi-pass drawing method is adopted at the high temperature, the copper element is diffused into the beryllium / aluminum composite material at the core part, metallurgical bonding is formed, high interface bonding strength is achieved, and the low-density copper-sheathed beryllium / aluminum composite material composite wire is obtained; and meanwhile, the rigidity of the wire is improved through the bearing of the beryllium / aluminum composite material inner core. According to the invention, the beryllium / aluminum composite material is used as the inner core skeleton of the composite wire, so that the reinforcing effect is achieved, and the density of the wire can be greatly reduced. The specific stiffness of the prepared high-specific-stiffness composite wire exceeds 27 GPa / (g / cm < 3 >), and the conductivity exceeds 4 * 10 < 7 > S / m.

The invention relates to a medical imaging continuous carbon fiber / PAEK composite material bone fracture plate and a preparation method thereof, and the preparation method comprises the following steps: premixing PAEK fine powder and a heat stabilizer, then carrying out melt blending extrusion and granulation to obtain PAEK granules, and carrying out melt spinning on the PAEK granules to obtain PAEK fibers; pAEK fibers and continuous carbon fibers are woven to obtain a CF / PAEK mixed fabric; wherein an imaging agent is added before melt blending of PAEK granules, or the imaging agent is loaded on continuous carbon fibers by adopting a solution impregnation method; the CF / PAEK mixed fabric is sequentially stacked and laid according to the angle, the CF / PAEK mixed fabric is placed in a bone fracture plate mold to be subjected to compression molding, then rough machining, finish machining and polishing treatment are conducted, and the continuous carbon fiber / PAEK composite material bone fracture plate product capable of achieving medical imaging is obtained. The material has the advantages of high mechanical strength, good fatigue resistance, no corrosion, good biocompatibility, and long-term fluorescence development or X-ray development effect.

The present invention belongs to the technical field of titanium alloys, and specifically relates to a high-temperature resistant titanium alloy, a preparation method thereof and an application thereof. The high-temperature resistant titanium alloy provided by the present invention comprises the following elemental components in percentage by mass: 6% Al, 4.8% Nb, 0.5% Si and the remainder Ti. The present invention adds 0.5% Si to the titanium alloy to improve the high-temperature performance and creep resistance of the alloy; Nb, as a β-stabilizing element of the Ti alloy, can increase the content of β phase in the alloy, thereby improving the plasticity of the alloy; the Nb element can also increase the solubility and solid solution stability of Si. The present invention improves the high-temperature resistance of the titanium alloy by limiting the mass percentages of silicon and niobium to 0.5% and 4.8%, so that the titanium alloy can maintain good mechanical properties after long-term service in a high-temperature (600°C) environment.

This invention belongs to the field of thermoplastic composite material joining technology, and specifically relates to a method for preparing a silane-modified thermoplastic composite resistance welding heating element. The invention first performs a cleaning pretreatment on a carbon nanotube film to remove surface contaminants. Then, plasma treatment technology is used to etch and activate the film surface, introducing oxygen-containing groups to provide active sites for silane grafting. Finally, silane is grafted onto the plasma-activated film using a silane coupling agent, utilizing its bifunctional properties to construct a molecular bridge between the carbon nanotubes and the resin, thereby improving the interfacial bonding force between the film heating element and the resin, and increasing the resistance welding strength. The heating element prepared by this invention has high specific strength, corrosion resistance, and better homogeneity with the base material, making it more suitable for complex welding joint service environments.

The invention discloses a laser additive manufacturing titanium-steel multi-material component, a device and a method thereof. According to the laser additive manufacturing titanium-steel multi-material component, element diffusion is inhibited through a middle layer, and interface bonding and forming performance are improved. The laser additive manufacturing titanium-steel multi-material component comprises a titanium alloy layer, a middle layer and a stainless steel layer, wherein the middle layer comprises an elemental metal Ce layer and an elemental metal Cr layer; the titanium alloy layer, the elemental metal Ce layer, the elemental metal Cr layer and the stainless steel layer are sequentially deposited through a laser directional energy deposition process. Therefore, according to the intermediate layer, the elemental metal Ce layer and the elemental metal Cr layer are designed, diffusion of Ti elements in the titanium alloy layer and Fe elements in the stainless steel layer is blocked through the characteristic that Ce and Cr are mutually soluble, and good metallurgical bonding between different materials is achieved; the problems of interface cracking, holes and the like caused by brittle intermetallic compounds when titanium alloy and stainless steel are directly connected are solved.

The invention discloses a thermoplastic high-strength fiber covering yarn prefabricated composite material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: 1) impregnating core yarns in a resin sizing agent and resin slurry, and carrying out pre-impregnation treatment to obtain high-strength fiber core yarns; wherein the material of the resin slurry is selected from at least one of polyether-ether-ketone, nylon and polypropylene; 2) covering the surface of the high-strength fiber core yarn with the yarn by using a multi-spindle knitting machine to obtain a knitted core-spun yarn; (3) weaving the weaving covering yarn through a multi-spindle weaving machine to obtain a covering yarn preset sleeve; and 4) curing the core-spun yarn preset sleeve to obtain the thermoplastic carbon fiber woven reinforced composite material. The composite material provided by the invention has the characteristics of high resin content, high structural stability and excellent interface performance, also has high flexibility, can be packaged by folding, winding, winding and the like, realizes extremely low space occupancy, is convenient to store and transport, and greatly reduces the storage and transportation cost.

The utility model provides a kind of carbon fiber roller, including pipe body, inner flange, outer flange, pipe body includes inner end and outer end, inner flange is installed in inner end, and outer flange is installed in outer end;The pipe body is carbon fiber pipe body, and the pipe wall of carbon fiber pipe body is equipped with punching part, and carbon fiber roller realizes significant light weight and high specific strength simultaneously, and the layout of vent hole of punching part is optimized to balance ventilation efficiency and structural strength.

The invention relates to the technical field of blasting protection devices, in particular to an equipment protection device capable of reducing blasting vibration.The equipment protection device comprises a device body and a supporting plate, moving wheels are connected to one position of the bottom end of the device body, a bottom plate is connected to the upper end of the device body, a side plate is connected to the upper end of the bottom plate, and a handle is arranged on one position of the surface of the side plate; a storage groove is formed in the other position of the surface of the side plate, a supporting rod is arranged in the storage groove, one end of the supporting rod is connected with a rubber wrap angle, and the other end of the supporting rod is connected with a connecting shaft. The device is convenient to push by arranging a handle, shock waves generated by blasting can be effectively absorbed and blocked by arranging a foamed aluminum plate, a buffer device and rubber filling particles, the device is protected from being damaged by the shock waves and flying stones, and therefore the problems and defects existing in an existing device are effectively solved and overcome.

The invention relates to a reinforced toe cap fabric, the fabric comprises first knitting areas and second knitting areas which are alternately distributed, the first knitting areas are formed by knitting weft yarns and aramid warp yarns into a three-layer three-dimensional deep angle connection structure, the second knitting areas comprise first parts and second parts which are alternately distributed, and the first knitting areas and the second knitting areas are formed by knitting weft yarns and aramid warp yarns into a three-layer three-dimensional deep angle connection structure. The first part is formed by weaving weft yarns and aramid warp yarns in a three-layer three-dimensional deep angle connection structure, and the second part is formed by weaving weft yarns, carbon fibers and thermofuse warp yarns in a three-layer plain structure. The reinforced toe cap fabric is integrally formed, so that the integration of the structure and the function is realized; high-performance fibers are blended, respective characteristics are fully exerted, and defects are avoided; the weight of a product is reduced, the performance of the product is improved, on the basis that the test passes, 70-80 grams can be produced for each pair, and the weight of a conventional composite toe cap on the market is about more than 100 grams; and the material with high specific strength and high specific modulus is more comfortable.

The invention discloses a segment porous foam rib laminate cooling structure applied to turbine blades, which comprises a plurality of cooling units, and the plurality of cooling units are connected in series in any direction around one cooling unit by taking the cooling unit as the center to form the segment porous foam rib laminate cooling structure; wherein one cooling unit specifically comprises an impact pore plate and an air film pore plate which are arranged in parallel at an interval; the impact hole is formed in the center of the impact plate; the four air film hole channels are arranged at the four vertexes of the air film hole plate; the four turbulent flow columns are connected between the impact pore plate and the air film pore plate and are uniformly arranged around the impact pore in a surrounding manner; wherein the turbulent flow column is of a spherical porous foam rib structure; the impact holes, the gas film holes and the turbulent flow columns are all perpendicular to the flow direction of high-temperature fuel gas. According to the structure, the heat exchange intensity of the impact-gas film double-wall cooling technology is further improved.

The application discloses a titanium alloy special-shaped material production process for a mobile phone physical SIM card holder, and comprises the following steps: continuously hot-rolling titanium alloy wire rods to deform to corresponding sizes; performing acid pickling at least once before the last hot-rolling to remove the surface oxides of the wire rods; performing annealing treatment at least once after the last hot-rolling; performing cold-rolling and shape correction after the annealing to make the cross-sectional size of the product meet the final product size; performing annealing treatment at least once after the cold-rolling; performing acid pickling at least once after the cold-rolling and annealing treatment to remove the surface oxides of the wire rods; cutting after online straightening to form the final special-shaped material for the SIM card holder; and the multiple rolling and heat treatment mode solves the problem of difficult machining and forming of the titanium alloy, the shape of the wire rod is shaped through cold-rolling, the titanium alloy wire rod is shaped, and the mobile phone SIM card holder special-shaped material is formed through rolling.

The present invention provides a vibration damper based on a multiphase lattice microstructure coupling system, which relates to the field of vibration damping control and additive manufacturing technology, including: a multi-layer vibration damping layer; a multiphase lattice layer, the multiphase lattice layer is arranged between adjacent vibration damping layers, the vibration damping layer and the multiphase lattice layer are both made of Ti‑6Al‑4V alloy, and the multiphase lattice layer is filled with rubber particles. The vibration damper is made of Ti‑6Al‑4V alloy by selective laser melting technology and is printed layer by layer. Compared with traditional rubber vibration dampers, it has better mechanical properties and stability, can maintain good energy absorption performance in extremely cold and extremely hot environments, and can overcome the influence of temperature on vibration damping performance.

The invention discloses a lightweight impact-resistant composite material plate with a hedgehog-thorn-like microstructure and a preparation method thereof. The lightweight impact-resistant composite material plate with a hedgehog-thorn-like microstructure comprises: a porous structure core layer composed of transverse reinforcing ribs and longitudinal reinforcing ribs and an upper and lower panel structure. The porous structure core layer adopts a short fiber epoxy resin material, and the upper and lower panels adopt a mixed fiber epoxy resin material with a variable modulus and a variable density. The upper and lower panels adopt a fiber ply design. The overall structure is prepared by 3D printing and one-piece molding to form a bionic porous structure composite sandwich panel. Compared with a traditional sandwich panel structure, the specific stiffness and specific strength thereof are further improved, the local stress concentration caused by the sudden change of properties of heterogeneous materials is alleviated, and the problem of debonding and fracture of the interface between the upper and lower panels and the core layer due to stress concentration and premature damage and failure is solved.

This invention discloses a bamboo fiber, its preparation method, and a bamboo fiber wound hydrogen storage tank. The preparation method of the bamboo fiber includes the following steps: cutting natural bamboo into equal-length bamboo poles and pretreating them by soaking them in boiling water to remove water-soluble organic matter; mixing hydrogen peroxide, organic acid, and H2SO4 in a certain proportion to prepare a peroxyacid solution, wherein the concentration of hydrogen peroxide in the peroxyacid solution is 7-24 wt%, the concentration of organic acid is 15-55 wt%, and the concentration of H2SO4 is 0.5-3 wt%; soaking the pretreated bamboo poles in the peroxyacid solution at 50-60℃ for 12-20 hours to obtain bamboo fiber; then soaking the bamboo fiber in an alkaline solution for neutralization, and washing it after neutralization; vacuum drying the washed bamboo fiber and twisting it to extend its length to obtain long fiber; and applying microwave irradiation to the long fiber to obtain the final product.

The invention discloses a low-anisotropy aluminum-lithium alloy and a preparation method and application thereof, and belongs to the technical field of preparation of aluminum-lithium alloy materials. According to the invention, by reasonably adjusting alloy elements and contents and controlling precipitation of a second phase of a matrix, main precipitated phases are a delta'phase with reduced anisotropy and an Al3 (Er, Zr) composite phase, so that the obtained aluminum-lithium alloy has low density, high specific strength, high toughness and low anisotropy. In addition, the texture type in the aluminum-lithium alloy is regulated and controlled through cross rolling, a strong texture is eliminated, and an anisotropic brass-like texture {011} lt; 111gt, 111gt; the texture is converted into a brass R-type texture {111} lt; 112gt, 112gt; and the anisotropy of the aluminum-lithium alloy is further reduced, the alloy strength IPA is reduced to 5.5% from 10.1% of one-way rolling, the elongation IPA is also reduced to 3.3% from 12.8%, and the comprehensive mechanical property of the alloy is improved.

The invention discloses a formula of a novel light high-entropy alloy of an Al-Mg-Ti-Li-Ni-V system, the novel light high-entropy alloy has good mechanical performance and low density, and the requirement of an automobile frame for materials with good plasticity and high strength ratio can be effectively met. The alloy prepared according to the method in the claim 1 is characterized in that the density of the novel alloy is 3.9-6.8 g / cm < 3 >, and compared with dual-phase steel, the density is reduced by 12-50%; the melting point is 1350-1800 DEG C and is improved by 108-177% compared with that of a magnesium alloy (the melting point is 650 DEG C); the novel alloy has good mechanical performance at normal temperature, the yield strength reaches 500-650 MPa or above, and the yield strength of the novel alloy is 10-96% higher than that of an AZ91D magnesium alloy, 7-60% higher than that of a six-series aluminum alloy and 60-110% higher than that of dual-phase steel; and the elongation rate exceeds 20-30%, is 100-200% higher than that of an AZ31B magnesium alloy and is 67-150% higher than that of a six-series aluminum alloy, and the elongation rate is equivalent to that of dual-phase steel.

The utility model discloses a PET (Polyethylene Terephthalate) composite special-shaped part and an autoclave forming and curing device thereof, and belongs to the technical field of thermal forming of composite materials. The PET composite special-shaped part comprises an L-shaped first bending part, a transverse part and an L-shaped second bending part which are integrally formed, and PET + CFRT prepreg enters the forming lower die and the forming upper die after being subjected to linkage rotation through the first feeding roller pair and the second feeding roller pair; then packaging the forming lower mold, the forming upper mold, the first feeding roller pair and the second feeding roller pair by adopting a vacuum bag, then sealing, and then integrally pushing the autoclave forming and curing device into an autoclave for heating, pressurizing and curing, so as to obtain the PET composite special-shaped part. The PET composite special-shaped part which is light in weight, high in specific strength, high in wear resistance, anti-fatigue and good in forming process is designed to replace an existing adaptive connecting part made of a pure metal material, and the technical requirements for good function application of overall weight reduction, high specific strength, high wear resistance and anti-fatigue in an application scene are met.

The application belongs to the technical field of composite materials, and particularly relates to a hybrid continuous fiber 3D printed double-diagonal reinforced bionic lattice composite structure, a tough phase outer frame constraint structure, and a high-strength bearing core structure. The tough phase outer frame constraint structure is a simple cubic lattice configuration and is made of continuous glass fiber reinforced polyamide composite material. The high-strength bearing core structure is a double-diagonal line topology configuration of a deep-sea glass sponge and is made of continuous carbon fiber reinforced polyamide composite material. The application adopts a differentiated material layout strategy of "high toughness of outer frame and high strength of core body", prepares the outer frame constraint structure by using CGF / PA high-toughness composite material, effectively disperses external impact load, delays initial cracking of the structure, reduces the initial peak force of compression, and inhibits local stress concentration and micro-defect expansion on the basis of excellent fracture toughness and deformation adaptation characteristics.

This invention relates to the field of high-performance carbon composite materials, and more particularly to a high thermal conductivity pyrolytic graphite foam, its preparation method, and its applications. This invention constructs a "mesophase pitch-based carbon foam-carbon fiber cloth" sandwich composite structure by alternately layering mesophase pitch-based carbon foam and carbon fiber cloth, obtaining a high thermal conductivity pyrolytic graphite foam with high thermal conductivity, high anisotropy, high graphitization degree, and excellent mechanical properties. This solves the problem of insufficient performance of existing carbon foam materials and reveals its structure-property relationship, providing a new technical approach for the development and application of high-performance thermal management materials. It has significant scientific and application value for promoting the development of high-performance thermal management materials. The high thermal conductivity pyrolytic graphite foam provided by this invention combines high deposition uniformity, high multidimensional thermal conductivity, and excellent mechanical properties, and has broad application prospects in the fields of electronic device heat dissipation or aerospace thermal management.

This invention provides a tunable gradient-curved sound barrier structure and method based on 3D printing, belonging to the field of environmental noise control technology. The sound barrier unit is fabricated using an integrated molding process. Its core lies in the internal construction of a folded, curled topological skeleton with a gradient distribution along the sound wave propagation direction. This skeleton extends vertically to form a three-dimensional solid. The geometry and spacing of the internal folded channels can be parametrically adjusted to achieve precise matching with the target noise spectrum characteristics. In terms of manufacturing process and materials, this invention employs selective laser sintering technology, using modified microporous nylon composite material as raw material. For highway traffic noise scenarios, this structure effectively extends the sound wave propagation path and induces sound energy dissipation by utilizing gradient-changing folded channels, achieving efficient insertion loss in the two energy-concentrated frequency bands of 315-500Hz and 800-1250Hz. Simultaneously, combined with the micropores and high damping characteristics of the material, it effectively suppresses the coincidence effect.

The invention relates to a four-axis unmanned aerial vehicle shell, in particular to a 3D-printed integrated porous structure four-axis unmanned aerial vehicle shell and a manufacturing method thereof. The shell is of a triple periodic TPMS lattice porous structure, and the triple periodic TPMS lattice porous structure is formed by permutation, combination and connection of a plurality of repeated TPMS basic units; in the direction from the fixed end to the free end of the vehicle arm, the TPMS basic units are gradually arranged according to gradient change, and the wall thickness of crystal lattices is gradually increased; the four-axis unmanned aerial vehicle shell is high in heat dissipation performance and has the excellent energy absorption characteristic, and the structural weight is further reduced; the light weight effect is remarkable while the protection performance of the shell is improved, and the structural strength and the light weight characteristic are both considered.

The invention relates to a low-cost Ti-V-Zr metastable beta titanium alloy for laser additive manufacturing and a preparation method of the low-cost Ti-V-Zr metastable beta titanium alloy, and belongs to the technical field of metastable beta titanium alloy additive manufacturing. The alloy comprises the following components in percentage by weight: 18-25% of V, 1-5% of Zr and the balance of Ti and inevitable impurities, wherein the sum of the components is 100%. A corresponding metal cylindrical bar is prepared according to the mass ratio of Ti, V and Zr elements; and under the argon atmosphere, all the metal cylindrical bars are placed at the plasma heating end, high-speed rotation is conducted, the cylindrical end faces are melted into liquid, the liquid is crushed and refined under the centrifugal force effect, cooling, solidification and spheroidizing are conducted in a lower powder collecting chamber, and the metastable beta titanium alloy powder for the laser additive is obtained. Metastable beta titanium alloy powder for laser additive manufacturing is placed in a powder feeder to be subjected to one-way deposition, and a component is formed through set laser parameters; and carrying out solid solution and water quenching on the component to obtain the laser additive Ti-V-Zr metastable beta titanium alloy. The Ti-V-Zr metastable beta titanium alloy prepared through the method is highly matched in strength and plasticity.