549 results about "Selective laser melting" patented technology

The invention discloses a method for preparing a copper-chromium-niobium alloy high-thermal-conductivity part based on green laser SLM, and relates to the technical field of copper-chromium-niobium alloys. Comprising the following steps that copper-chromium-niobium alloy powder is pretreated; the pretreated copper-chromium-niobium alloy powder is laid on a base plate, green laser is adopted for selective laser melting printing, at least two layers of printing parameters with different energy densities are set in a layered energy gradient control mode, layered printing is carried out, a pore structure with the porosity in continuous gradient distribution is formed, and a pre-machined part is obtained; wherein the wavelength of the green laser is 500 nm to 550 nm, and the spot diameter of the green laser is 15 [mu] m to 30 [mu] m; and the pre-machined part is subjected to heat treatment, and the high-heat-conduction part is obtained. The copper-chromium-niobium alloy part is prepared through the green laser SLM technology, the layered energy density gradient control technology is adopted, and the problems that in copper-based alloy additive manufacturing, the reflectivity is high, the structure is limited, and the performance is insufficient are systematically solved.

The invention discloses a polylactic acid injection molding mold based on a gradient heat conduction composite structure and a heat management method thereof, and belongs to the technical field of high polymer material molding processing equipment.The polylactic acid injection molding mold comprises a) a surface high heat conduction layer which is made of a copper-based composite material, has the heat conduction coefficient larger than or equal to 400 W / m.K and is used for rapidly and directionally transferring heat to the surface of a mold cavity; and b) an intermediate transition layer composed of a titanium alloy porous structure. High-efficiency production is realized through innovative design and advanced technology. Integrated metallurgical bonding of the gradient heat conduction structure is achieved through the selective laser melting technology, and the heat flow directivity is enhanced; the dual-mode cooling system is combined with closed-loop temperature control, and the temperature is accurately regulated and controlled; the high-performance material improves the comprehensive performance of the mold; and the structural stability is guaranteed through accurate technological parameters. According to the thermal management method, through multi-physical field simulation optimization, rapid heating and cooling are achieved, the forming period is shortened to 16-18 seconds, the calculation efficiency is improved by 80%, and the production efficiency and the product quality are effectively improved.

The invention relates to an additive manufacturing method and application of an aluminum-based silicon carbide composite material complex component, and the additive manufacturing method of the aluminum-based silicon carbide composite material complex component comprises the following steps: step 1, uniformly mixing silicon carbide powder and aluminum alloy powder, and drying; 2, establishing a structural model for the target part, and importing the structural model into selective laser melting forming equipment; thirdly, selective laser melting forming is conducted; fourthly, linear cutting and surface treatment are conducted; and fifthly, hot isostatic pressing treatment is conducted. The invention further provides application of the aluminum-based silicon carbide composite material complex component to precise structural components such as aviation structural components, guided missile and satellite components and optical instruments. According to the method, the problem of subsequent large-allowance removal of the aluminum-based silicon carbide composite material component is solved, the wettability between the aluminum alloy and the silicon carbide particles is improved, the mechanical property meets the application requirement, and the aluminum-based silicon carbide structural component with stable performance is obtained.

The invention provides a method and a device for evaluating and measuring microscopic mechanical properties of TC4 alloy, relates to the technical field of microscopic mechanical properties, and realizes accurate evaluation of material properties through combination of multi-scale characterization and numerical simulation. Firstly, a standard sample is prepared through selective laser melting, and residual stress field distribution is obtained through X-ray diffraction; dividing a stress field into sub-regions, and establishing a quantitative relationship between microscopic structure parameters and residual stress by combining SEM and EBSD analysis; the method comprises the following steps: acquiring local mechanical properties through a nanoindentation test, and constructing a stress-performance correlation model; and finally, establishing a finite element model, transmitting stress and tissue parameters by adopting trilinear interpolation and an inverse distance weighting method, verifying data reliability through a stress difference criterion, and calculating mechanical properties of each unit. According to the method, multi-scale correlation from microstructure characteristics to macroscopic mechanical properties is innovatively realized, so that the mechanical property distribution of the material is accurately evaluated.

The invention provides a high-strength aluminum alloy selective laser melting forming thermal stress prediction method based on deep learning. The method comprises the steps of 1, finite element model establishment and simulation, wherein a heat transfer model and a thermal coupling model are established; an SLM process is used as a simulation object, a Gaussian model is adopted to define a laser heat source, and thermal stress distribution under different process parameters and different sample sizes is simulated; wherein the process parameters comprise laser power, scanning speed and hatch spacing; step 2, data processing and deep learning model training; comprising the steps of data preprocessing, neural network model architecture determination, adversarial network part generation and model configuration and training. 3, evaluating and optimizing the model; and 4, thermal stress prediction and process optimization. By learning a complex mode in finite element simulation data through a deep learning model, efficient and accurate thermal stress prediction is achieved, and the problems that traditional finite element analysis is complex in calculation and large in resource consumption are solved.

An additive manufacturing method based on micro-selective laser melting technology. By using a spot size of 30 μm or less, a metal powder layer thickness of 10 μm or less and ultrafine metal powders having a D90 particle size of 30 μm or less, and in combination with the control of a scanning laser power, a scanning rate, a linear energy density and a volumetric energy density within specific ranges, the method can print complex-structured metal parts having extremely high resolutions and surface smoothness, and can obtain a high-density internal structure of a component even under a relatively low energy density or power condition, thereby effectively protecting an optical system. Moreover, a printed component exhibits a defect-free microstructure, and has excellent electrical properties, thermal properties and mechanical properties. Particularly, ultrafine grains and a high dislocation density provide superior mechanical properties compared to conventional manufacturing materials. An infrared laser device can be used, thereby achieving low costs.

The invention belongs to the technical field of metal additive manufacturing post-processing, and relates to a method for achieving crack closing of a tungsten component prepared through SLM based on SPS. The method mainly comprises the following steps that S1, a tungsten component is prepared, specifically, a pure tungsten component is prepared through a selective laser melting (SLM) technology; s2, the SLM forming component is subjected to surface cleaning and support removing treatment, and after it is ensured that no powder residues exist, accurate positioning and placing treatment is conducted; and S3, SPS treatment process: putting the graphite mold treated in the step S2 into SPS equipment for sintering treatment. Through the combined action of high temperature and mechanical pressure, inevitable microcracks in the SLM pure tungsten component are effectively closed, and the compactness and integrity of the component are remarkably improved.

An oxyide dispersion-strengthened (ODS) alloy is disclosed that is compatible with melt-based additive manufacturing processes, such as laser powder bed fusion (L-PBF) while achieving material properties, such as resistance to frictional ignition, comparable to or better than wrought ODS alloys. This is accomplished, in part, by adjusting the composition of the ODS alloy and / or adjusting the operating parameters of the additive manufacturing process to reduce or, in some instances, mitigate dispersoid coarsening and slag formation. For example, a nickel (Ni)-based ODS alloy may include less than 0.3 wt % aluminum (Al) to reduce the formation of low melting point oxides that are prone to coarsening and slag formation. In another example, various processing parameters associated with a selective laser melting process, such as beam power, beam spot size, and scan speed, may be chosen to reduce a melt time associated with the additive manufacturing process.

The invention discloses a multi-material localized printing device and method based on a selective laser melting technology. The device comprises a laser printing head, a printer shell, a groove type lifting printing table, a powder storage mechanism, a powder feeding execution mechanism, a powder scraping mechanism and a regional powder covering mechanism. The groove type lifting printing table is arranged on the printer shell; the laser printing head is located above the groove type lifting printing table. The powder storage mechanism is located on the side of the groove type lifting printing table. The powder feeding executing mechanism is located below the powder storage mechanism. The powder scraping mechanism is located behind the groove type lifting printing table. The regional powder covering mechanism is located in front of the groove type lifting printing table. Various materials can be selected during one-time forming machining, material conversion in the forming machining process is simpler and faster, multi-material combination can be achieved in different areas of the same-layer structure in the horizontal direction, and multi-material combination can be achieved in different areas or the same area of the different-layer structure in the vertical direction; and the forming requirements of multi-material integrated parts are effectively met.

The invention provides a multi-scale simulation method for high-fidelity selective laser melting forming and phase field-lattice Boltzmann coupling, and belongs to the technical field of selective laser melting numerical simulation. The method comprises the specific steps that a selective laser melting powder laying process model is constructed based on a discrete element method, and a randomly stacked powder bed model is obtained; a high-fidelity selective laser melting forming thermal fluid dynamic model is established, and macroscopic temperature distribution and flow field distribution of a molten pool are simulated; establishing a phase field model-lattice Boltzmann coupling model; and extracting temperature gradient, solidification velocity and melt flow velocity data of local positions of the boundary of the steady-state molten pool, and simulating solidification structure evolution under flowing of molten metal in the molten pool by taking the data as initial conditions of the phase field-lattice Boltzmann coupling model. According to the method, through high-fidelity multi-scale simulation, the relation between the process parameters and the microstructure is established more comprehensively, and reliable numerical support is provided for selective laser melting process optimization and microstructure prediction.

The invention discloses a method for preparing an aluminum alloy capillary structure based on a selective laser melting technology, which comprises the following steps of: comprehensively regulating and controlling technological parameters of selective laser melting according to laser energy density by utilizing the forming principle of'incomplete melting pores' and'keyhole pores' in a selective laser melting forming process; and the porosity-adjustable aluminum alloy capillary structure is prepared. The method mainly comprises the following steps that firstly, aluminum alloy spherical powder with the particle size range suitable for the selective laser melting process is selected; secondly, a laser energy density reference value is selected according to the optimal technological parameters of selective laser melting forming of the aluminum alloy solid structure; then, according to the laser energy density, the laser power, the scanning rate, the scanning interval and other technological parameters are comprehensively regulated and controlled, the powder laying layer thickness is set, and the aluminum alloy capillary structure is prepared; and finally, the porosity of the capillary structure is measured, the correlation between the technological parameters and the porosity is established, a technological window is determined, and the aluminum alloy capillary structure with the adjustable porosity is prepared.

A method for preparing a profiled microchannel plate heat exchanger, and belongs to the technical field of heat exchange. The method based on a combination of a plurality of methods formed by selective laser melting and micro electrical discharge machining can realize a profiled microchannel plate heat exchanger having large aspect ratio flow channels and closed profile section flow channels.

The invention discloses a method for improving the medium-temperature strength of an additive manufacturing Al-Si alloy, and belongs to the field of metal materials. According to the method, the Al-Si alloy serves as a base body, micron-sized AlB2 and Ti powder are added, laser irradiation energy in the additive manufacturing process is used for enabling the micron-sized AlB2 and Ti powder to react, and nanoscale TiB2 and D022-Al3Ti strengthening phases are synthesized in situ so that the medium-temperature strength of the material can be improved. By optimizing the content of the components, the adding proportion of the AlB2 powder and the adding proportion of the Ti powder are controlled to be 1.20-1.60 wt.% and 1.80-2.40 wt.% respectively, and the mass ratio of the AlB2 powder to the Ti powder is 2: 3. Through the synergistic effect of the two nanoscale second phases, the alloy can have high strength in a medium-temperature environment without post-heat treatment, and meanwhile, the high percentage elongation after fracture is kept. The yield strength of the alloy in the environment of 300 DEG C reaches 190 MPa, the tensile strength reaches 200 MPa, the ductility reaches 10%, and the strength upper limit of the selective laser melting near-eutectic Al-Si alloy in the working environment of 300 DEG C is broken through. The mechanical property of the aluminum alloy is comparable with that of Al-Ni, Al-Ce and other heat-resistant aluminum alloys prepared through selective laser melting, and the aluminum alloy is lower in cost and lighter in density.

The invention discloses a heat-resistant aluminum-based composite material and a selective laser melting forming preparation method and application thereof, and belongs to the technical field of metal material additive manufacturing. According to the method, aluminum-silicon alloy matrix powder and nano CuO powder are mixed to serve as cladding powder, Al2O3 and Al2Cu nano particles and precipitated phases which are evenly distributed are directly generated in matrix alloy through in-situ reaction of Al-CuO in a selective laser melting process under the action of high-energy laser, and an aluminum-silicon eutectic structure can be refined to 200-300 nm. Cooperative strengthening of multiple precipitated phases and multiple interfaces is achieved, and the problems of coarse precipitated phases, unmelted particles and the like generated by traditional alloying methods and the like are solved. According to the method, the high-temperature mechanical property of the selective laser melting forming aluminum-based composite material can be remarkably improved. The prepared composite material is suitable for high-temperature light-weight components such as aerospace and nuclear energy equipment, and has a wide application prospect.

The invention belongs to the technical field of additive manufacturing, and particularly relates to a selective laser melting dynamic self-adaptive unsupported printing device which comprises a box body, a scraping mechanism, a powder feeding mechanism, a powder amount control mechanism, a self-adaptive printing mechanism and a powder collecting mechanism. A scraping plate of the scraping mechanism pushes powder provided by the powder feeding mechanism to the position above the powder amount control mechanism, the powder amount control mechanism controls the using amount of the powder, meanwhile, the powder falls into the self-adaptive printing mechanism, the scraping plate of the scraping mechanism pushes the remaining powder into the powder collecting mechanism, a transmission mechanism is arranged at the bottom of the self-adaptive printing mechanism, and the transmission mechanism is connected with the self-adaptive printing mechanism. The transmission mechanism is used for self-adapting to the printing mechanism to generate an inclined state; according to the device, the inclination angle can be dynamically adjusted in the printing process, supporting structures are reduced or eliminated, and powder laying and waste are reduced.

The invention belongs to the technical field of alloys, and particularly relates to a 3D printing titanium alloy and a preparation method thereof. The invention particularly provides a preparation method of a TA15 titanium alloy for selective laser melting printing. The structure uniformity and the mechanical property of a material can be remarkably improved. By optimizing SLM printing process parameters (including laser power, scanning speed, filling spacing and layer thickness), the heat accumulation effect and cooling rate in the forming process are effectively controlled, so that a microstructure with high density, uniform structure and refined grains is obtained, and the hardness, strength and toughness of the titanium alloy are improved.

The invention discloses a bone scaffold fusion design and preparation method based on mirror image registration, and the method comprises the steps: firstly, based on a three-dimensional medical image of a femoral defect region of a patient, combining an opposite-side complete femoral CT image, and achieving the automatic recognition and complementation of the defect region through the mirror image transformation and ICP registration technology; after defect boundary extraction is completed, three-dimensional reconstruction is carried out on the individualized outer contour of the left bone tissue, and an STL format model is exported. According to the femur functional partition characteristics, a Diamond structure is adopted in a cortical bone area to enhance mechanical support, and a Gyandroid structure is selected in a cancellous bone area to achieve porosity gradient filling, so that the permeability is optimized, and cell proliferation is promoted. Continuous transition among the structures is realized through a Sigmoid function, and the stability and the biological adaptability of the whole structure are improved. And finally, the stent model is subjected to selective laser melting, and a Zn-3Mg alloy material is utilized to complete printing manufacturing.

The invention discloses a laser additive manufacturing double-layer structure gradient hard alloy cutter and a manufacturing method, the alloy cutter comprises a base body, a transition layer and a surface layer, and the transition layer is arranged between the base body and the surface layer; the base body and the transition layer are both made of WC-Co particles, and the surface layer is made of WC-TiC-TaC-Co particles; the grains of the substrate and the surface layer are smaller than those of the transition layer. The manufacturing method comprises the following steps that spherical hard alloy particles are obtained through an atomization pre-sintering granulation method; technological parameters and environmental parameters of selective laser melting are optimized; the substrate, the transition layer and the surface layer are sequentially formed through selective laser melting printing; and the double-layer structure gradient hard alloy cutter is obtained. By optimizing the atomization pre-sintering granulation method and the laser additive manufacturing process, the high-density, high-precision and high-performance gradient hard alloy cutter with the double-layer structure can be prepared.

The invention discloses a titanium-based implant with antibacterial and osteogenesis-promoting properties as well as a preparation method and application thereof, and belongs to the technical field of crossing of biomedical materials and biomedicine. The selective laser melting porous titanium alloy is used as a matrix, micro-arc oxidation and hydro-thermal treatment are utilized, and the multifunctional composite coating with the antibacterial function and the osteogenesis promoting function is constructed on the surface of the selective laser melting porous titanium alloy; the microstructure and the biological performance of the coating are regulated and controlled by doping functional elements, so that the antibacterial performance and the osteogenesis promoting performance of the coating are optimized.

The invention provides a selective laser melting adaptive parameter regulation and support-free printing system, so that the problems of fixed parameters, temperature imbalance, residual stress and support dependence in the existing SLM technology are solved. The system comprises a three-dimensional model topology analysis unit, a multi-field coupling monitoring unit, a parameter adaptive regulation and control unit, a stress compensation path planning unit, an equipment cooperative control unit and a process database unit.

The invention provides a low-cost selective laser melting (SLM) titanium alloy printing method, and aims to solve the problems of narrow powder particle size range, low powder utilization rate, low forming efficiency and low density in the prior art. The method comprises the steps that TC4 titanium alloy powder with the particle size ranging from 15 micrometers to 100 micrometers is provided, and the powder utilization rate and the forming quality are remarkably improved by optimizing technological parameters such as laser power, the scanning speed, the printing layer thickness, the powder laying speed and annealing heat treatment. By using the large-particle-size powder and the large layer thickness, the printing speed can be increased, the printing time can be shortened, and meanwhile a formed part with high density (larger than or equal to 99.9%) and high performance is guaranteed. The titanium alloy material has excellent mechanical properties, and is suitable for aerospace, medical treatment and other high-performance engineering applications. Compared with a traditional method, the method has the advantages that the production cost is reduced, the performance and production efficiency of the material are improved, and the method has a wide market application prospect.

The invention relates to the technical field of high-temperature alloy additive manufacturing, and discloses a method for preparing a low-crack-sensitivity nickel-based high-temperature alloy through selective laser melting and application of the low-crack-sensitivity nickel-based high-temperature alloy. And selective laser melting forming treatment is conducted on the core-shell structure powder, specifically, regional laser scanning, interlayer pulse pressurization and in-situ heat treatment are conducted, and the low-crack-sensitivity nickel-based high-temperature alloy is obtained. According to the invention, synchronous regulation and control of microcrack closing and nanophase precipitation are realized through design of core-shell structure powder, laser regional dynamic energy control scanning of hot lines and interlayer in-situ densification. By means of the method, the SLM forming crack density can be reduced to be smaller than or equal to 0.1 mm / mm, the anisotropy index is smaller than or equal to 1.05, the post-treatment hot isostatic pressing link is omitted, and the method can be applied to thin-wall high-cycle fatigue parts such as aero-engine flame tubes and aerospace turbine pump rotors.

The invention discloses an antifriction wear-resistant coating material and a preparation method and application thereof, and the preparation method comprises the following steps: cladding metal-based powder on a base material by laser cladding to obtain a laser cladding layer; the surface of the laser cladding layer is subjected to laser etching, and the laser cladding layer with a texture on the surface is obtained; powder is filled in the texture of the laser cladding layer with the texture, the texture is completely filled and leveled up by the filling powder, and the filling powder is melted by laser to form a solid layer, so that the antifriction and wear-resistant coating material is prepared. According to the method, on the basis of an original laser cladding coating, the self-lubricating coating is prepared in a texture pit through texture processing and a selective laser melting technology secondary processing and powder filling mode, so that the original phase, microstructure, density and wear resistance of the laser cladding coating are not influenced, and the self-lubricating coating is prepared in a self-lubricating coating pit; and the friction coefficient of the coating can be further reduced by virtue of the self-lubricating coating in the texture pit, so that the high-performance coating with wear-resisting and friction-reducing functions is prepared.

The invention belongs to the technical field of aero-engines, and particularly relates to a design method of an air inlet casing thin-wall reinforced structure based on rigidity requirements. The invention relates to a design method of a thin-wall reinforced structure of an air inlet casing based on a rigidity requirement. Comprising the following steps of model establishment, parameter setting, load and boundary determination, topological optimization mathematical model establishment, topological optimization calculation, model reconstruction, structural strength evaluation, manufacturability evaluation and preparation, and preparation of the air inlet casing by adopting a selective laser melting additive manufacturing technology. According to the design method for the thin-wall reinforced structure of the air inlet casing based on the rigidity requirement, the topological optimization structure design method and the additive manufacturing technology are combined, the material utilization rate and the specific rigidity of the air inlet casing are greatly improved, and the light weight level of the whole machine is remarkably improved.

The invention discloses a monitoring signal compensation system and method for a selective laser melting process. The monitoring module is additionally arranged in the selective laser melting equipment; a laser beam is divided into two paths after reaching the spectroscope through the collimator; one path of light beam reaches a power meter, the power meter converts a received optical signal into an electric signal and outputs the electric signal to a data processing module, and the stability and change of the laser power are monitored; the other light beam irradiates metal powder, and part of the light beam is absorbed by the metal powder to be molten to form a molten pool; a thermal radiation infrared beam emitted by a molten pool outwards is reflected by a dichroscope, filtered by an infrared narrow-band filter and transmitted by a focusing lens and then reaches a photodiode, and a corrected two-dimensional signal distribution diagram is obtained by aligning an output voltage signal with an actual printing position and compensating and correcting light intensity data; and finally, performing feature correspondence and analysis on the two-dimensional signal distribution diagram and the measured data of the power meter. The method can be widely applied to the field of SLM process monitoring.

The invention relates to an SLM additive manufacturing T-shaped tubular joint printing process optimization and manufacturing method, a T-shaped tubular joint is formed by intersecting and connecting two steel pipes of the same or different types, the T-shaped tubular joint comprises an orthogonal T-shaped tubular joint and an oblique T-shaped tubular joint, and the method comprises the steps that composition and printing parameters of a tubular joint printing device are configured; optimizing an edge structure and a suspension structure of the tubular joint; optimizing the suspension angle and the horizontal included angle of the tubular joint; and optimizing the T-shaped tubular joint support configuration. The laser fusion printing device has the beneficial effects that based on the laser fusion printing device and parameter setting, optimization, manufacturability and integrated forming of a structure model are achieved through edge structure optimization and suspension structure optimization, internal support-free printing is achieved through suspension angle optimization and horizontal included angle optimization, and the printing collision condition is avoided; and the printing forming success rate of the T-shaped steel pipe tubular joint is effectively increased.

The invention discloses a molten pool temperature prediction method for selective laser melting, belongs to the field of additive manufacturing, and aims to solve the problems that the real temperature of a molten pool is difficult to measure accurately due to the limitation of performance and working conditions of an existing thermal infrared imager, a real-time prediction tool is lacked, and a basis cannot be provided for printing adjustment. The method comprises the following steps: carrying out layering processing on a printing structural member to form a binary slice image; preprocessing the slice image; for any printing layer n needing to be predicted, slice trend gray scale information is calculated; infrared radiation of a molten pool is captured in real time through an OT camera, and an actually measured temperature field matrix aligned with any printing layer n is constructed through a calibration model; establishing a time-space aligned data set based on the slice trend gray scale information and the actually measured temperature field matrix, and dividing the data set into a training set and a test set; establishing a GAN model based on the data set; training a GAN model; and inputting slice trend gray scale information into the trained GAN model to obtain predicted molten pool temperature data.

The invention discloses a preparation method of copper-based composite powder with high infrared laser absorptivity and a reaction device of the copper-based composite powder, and belongs to the technical field of metal additive manufacturing. The preparation method of the copper-based composite powder comprises the following steps that copper powder is subjected to acid pickling pretreatment, Cu2O-coated Cu powder is prepared through air suspension dynamic etching, the Cu2O-coated Cu powder is purified, and the prepared composite powder is of a core-shell structure and comprises a copper core and a cuprous oxide modified shell wrapping the surface of the copper core; by means of the structure, the absorptivity of the copper powder to near-infrared laser of 1064 nm and the like can be remarkably improved to 30% or above, and therefore the problems that pure copper is poor in melting and multiple in forming defect due to high reflectivity in laser additive manufacturing are effectively solved. The composite powder can be directly used for existing selective laser melting or directional energy deposition equipment, has great significance in achieving high-density copper part forming under medium power, and is convenient to prepare, low in cost and high in practicability.

The invention discloses an additive manufacturing high-damping manganese-copper alloy lattice structure and a preparation method and application, and particularly relates to the technical field of additive manufacturing of lattice metal. The lattice structure is formed by expanding three-dimensional lattice unit cells, the lattice unit cells are composed of rod-shaped structures with reinforced vertexes, in a cubic space with the side length being L, every two farthest vertexes are connected pairwise to form four connecting rods A, the vertexes of the six surfaces of the cubic space are connected with diagonal lines to form twelve connecting rods B, the center point where the four connecting rods A are connected is reinforced through a ball body C, and the center point where the four connecting rods B are connected is reinforced through a ball body C; and the vertex of the connection of every three connecting rods B is reinforced by a 1 / 4 sphere C, the connection position of the lattice unit cell rod type structure and the sphere C is subjected to round corner treatment, and the high-damping manganese-based alloy lattice structure is obtained through expansion in the transverse and longitudinal directions. Structural and functional integrated preparation is achieved through a selective laser melting process, pre-printing treatment, autonomous partition scanning and layer-by-layer multi-time scanning strategies are adopted, the burnout rate and density of the manganese element are controlled, and stable operation of equipment is guaranteed.

The invention provides a gradient density metal implant additive manufacturing method, and relates to the technical field of selective laser melting additive manufacturing, according to the method, continuous gradient density distribution of a metal implant from an outer layer to an inner layer is achieved through multi-mode sensor fusion and a self-adaptive control algorithm, biomechanical characteristics of a skeleton are accurately simulated, and the manufacturing precision of the metal implant is improved. The step of designing a porous structure is omitted; cortical bone (high density) and cancellous bone (porous) structures of human bones can be accurately simulated, and the biomechanical suitability of the implant is improved.