125 results about "Rapid manufacturing" patented technology

The invention provides an underwater temporary concrete cofferdam formwork rapid manufacturing, mounting and pouring method which comprises the following steps that bin division is conducted in the length direction of an underwater concrete cofferdam, independent pier bin positions and permeable formwork bin positions which are sequentially and alternately distributed are included, and the adjacent independent pier bin positions and permeable formwork bin positions are connected together; firstly, independent pier bin positions are constructed, and a plurality of independent piers arranged at intervals are formed; then, after the two adjacent independent pier bin positions are connected together through the water-permeable formwork bin positions, concrete is poured into the water-permeable formwork bin positions; and concrete in the areas of the independent piers and the permeable formworks is cured, after curing is conducted to a set degree, the bin position formworks of the independent piers are dismantled, and concrete cofferdam construction is completed. According to the method, the construction efficiency is greatly improved, the construction safety and stability are guaranteed, and the construction period is effectively shortened.

Polymerizable, radiation-curable compositions are provided and comprise (i) monomers and (ii) at least one further component, wherein the (i) monomers comprise (a) at least one urethane (meth)acrylate that is at least difunctional, (b) at least one monofunctional acrylate having an alicyclic group and / or at least one monofunctional methacrylate having an alicyclic group, and (ii) the at least one further component comprises (c) at least one photoinitiator for the UV and / or visible range or a photoinitiator system for the UV and / or visible range. The compositions are usable for producing, via a rapid prototyping, manufacturing, or tooling process, dental prosthetic parts, orthopaedic instruments, or dental pre-forms that have a flexural strength of greater than or equal to 75 MPa, a modulus of elasticity of greater than or equal to 2600 MPa, and / or a water absorption of less than 45 [μg / mm3].

The utility model discloses an electric power stay wire rapid manufacturing and assembling device which comprises a mounting base and a steel strand, a limiting sliding groove is formed in the mounting base, a stay wire wheel is arranged above the limiting sliding groove, an arc-shaped cover plate is arranged on one side of the top of the stay wire wheel, a first ring groove is formed in the outer side of the stay wire wheel, and a limiting sliding block is arranged in the limiting sliding groove. The steel strand pulling device has the advantages that the steel strand pulling device is small in size and convenient to carry, accordingly, steel strand pulling manufacturing can be conveniently carried out outdoors, the threaded rod is driven by the motor to rotate, and the steel strand pulling device is convenient to use, high in practicability and high in practicability. And a limiting rotating bolt rotates in a limiting rotating opening, so that when the steel strand is pushed, a rotating wheel drives the second annular groove, the friction condition is avoided, and stay wires are conveniently manufactured.

The application discloses a plate heat exchanger for drilling mud cooling test, which comprises a front end plate assembly, a rear end plate assembly and a heat exchange plate assembly arranged between the two; the front end plate assembly, the heat exchange plate assembly and the rear end plate assembly are sequentially and tightly connected; the application is beneficial to modular design; the core function area of the reconfigurable plate can be customized and designed independently of the main body frame, the sealing and the connecting structure of the plate; in combination with 3D printing technology, the plate with different internal topological structures can be quickly manufactured and replaced according to specific experimental conditions and innovative ideas, flexible and quick switching of experimental configuration is realized, the research and development iteration cycle of the heat exchanger for mud cooling is greatly shortened, meanwhile, the drilling mud and the refrigerant obtain more uniform flow velocity distribution in the flow channel of the heat exchanger, and local heat transfer efficiency distortion caused by uneven fluid distribution is fundamentally avoided.

The application discloses a Seethrough automobile model manufacturing method, and belongs to the technical field of automobile model design and manufacturing, and specifically relates to a Seethrough automobile model manufacturing method, which comprises the following steps: Step 1: data processing and structure design, skeleton processing, blank preparation, automobile body prototype and rapid forming part manufacturing are carried out through CAM and CNC technologies to meet the requirements of curved surface processing and precision, Step 2: blank preparation and skeleton manufacturing, skeleton processing, blank preparation, automobile body prototype and rapid forming part manufacturing are carried out through CAM and CNC technologies to meet the requirements of curved surface processing and precision, Step 3: interior and exterior trim rapid part manufacturing, Step 4: assembly adjustment, assembly adjustment is carried out in the assembly adjustment stage, detection and adjustment are carried out through CAQ technology, Step 5: surface treatment, Step 6: light effect programming and debugging, and Step 7: overall assembly, rapid manufacturing of a high-simulation and multi-functional comprehensive automobile model is realized, the CAD software and the CAM and CNC technologies are used, adaptive adjustment is carried out according to the change of data, and stable connection and integration with other management information systems are realized.

The invention discloses an electrochemical metal 3D printing device based on meniscus confinement electrodeposition, a micro pipette is a metal salt electrolyte supply part and is fixed at the bottom of a micro pipette holder, an anode bar is arranged at the top of the micro pipette holder, the lower end of the anode bar is connected with a platinum anode wire, and the platinum anode wire is arranged in the micro pipette; the micro pipette holder is detachably connected with a mechanical clamping jaw at the tail end of the six-degree-of-freedom mechanical arm; the cathode substrate is fixed on the surface of a right-angle adapter plate connected with the three-axis displacement platform; the anode bar is electrically connected with the anode of the power supply, and the cathode substrate and the cathode of the power supply are electrically connected with two electrodes of the ampere meter respectively. The computer adjusts the angle formed by the axis of the micro pipette and the normal of the plane of the cathode substrate in real time through a preset program; a meniscus is formed between the tip of the micro pipette and the cathode substrate, metal ions in the electrolyte are reduced into elemental metal to be attached to the cathode substrate under the driving of voltage, and rapid manufacturing of a complex three-dimensional metal structure can be completed.

The invention discloses a silicon carbide wafer cutting method which comprises the following steps: cutting a crystal bar to obtain a plurality of to-be-ground wafers with the same thickness; grinding the front surface and the back surface of the to-be-ground wafer to obtain a ground wafer; and performing laser cutting and stripping on the grinding wafer to obtain two target wafers. In the technical scheme, the crystal bar is cut to obtain the to-be-ground wafer, then the surface of the to-be-ground wafer is ground to obtain the ground wafer so as to avoid the warping problem of the silicon carbide wafer, and finally, the ground wafer is cut and stripped by the laser to obtain the target wafer so as to ensure the rapid manufacturing of the silicon carbide wafer. The silicon carbide wafer can be quickly obtained through the first step to the third step, so that the manufacturing efficiency of the silicon carbide wafer is greatly improved.

The present invention features a liquid, solvent-free, silica precursor and two-photon 3D printing process to meet the increasing needs of high-precision glass micro-optics and address the major limitations of current three-dimensional (3D) printing optics. The printed optical elements may be fully converted to transparent inorganic glass at temperatures as low as 600° C. with shrinkages as low as 17%. The present invention includes a complete process chain, from material development, printing process, and performance evaluation of the printed glass micro-optics. 3D printing of glass micro-optics with isotropic shrinkage, micrometer resolution, low deviation peak-to-valley value (<100 nm), and low surface roughness (<6 nm) has been demonstrated. The present invention enables the rapid fabrication of complex glass micro-optics previously impossible using conventional glass optics fabrication processes.

The embodiment of the application discloses a kind of test verification method, device and equipment of engine air passage, obtain the casting model of engine cylinder cover, and input to the casting simulation software to obtain the deformation condition of casting model.According to the deformation condition, obtain the correction model of engine cylinder cover, and print the engine air passage entity model in engine cylinder cover correction model using selective laser sintering printing technology.The entity parameter of entity model is obtained and compared with design parameter.When the comparison result is that entity parameter is inconsistent with design parameter, the casting process of casting model is adjusted according to the result to adjust the casting model or adjust the engine cylinder cover correction model.The application predicts the deformation condition of cylinder cover casting process based on casting simulation software, and can quickly test the performance index of air passage while ensuring the consistency of size through printing technology, improve the accuracy and efficiency of air passage development.

The invention relates to the technical field of additive manufacturing, in particular to an advanced packaging RDL additive manufacturing method based on electric field driving spray deposition, and adopts an electric field driving spray deposition micro-nano 3D printing technology. Successively printing a first dielectric layer and a first circuit pattern layer formed by printing conductive paste on the substrate according to a set printing mode and process parameters; the method comprises the following steps: firstly printing a first dielectric layer, then continuously printing a second dielectric layer, punching the second dielectric layer, filling holes with conductive slurry to realize inter-layer circuit interconnection, then printing a second circuit pattern formed by printing the conductive slurry, and repeating the steps of printing the dielectric layer and the circuit pattern and the steps of punching and filling holes so as to complete the preparation of the multilayer RDL; according to the method, integrated rapid manufacturing of the multi-layer rewiring structure is achieved through direct printing and interlayer interconnection of the dielectric layers and the high-precision wires, the problems that a traditional RDL technology is complex, long in period and poor in flexibility are solved, particularly, the method has unique advantages in the design verification stage, and rapid prototype verification of the RDL can be achieved.

The invention discloses a forming method for rapidly manufacturing a large-size rectangular frame, and belongs to the technical field of forging. The problems that in the prior art, a large-size rectangular frame is large in forming material consumption and difficult to form are solved. The method comprises the following steps: determining a blank according to the theoretical weight of a rectangular frame final forge piece; carrying out cake upsetting on the heated blank to form a cake blank; carrying out saddle chambering operation on the heated punched cake blank to form a chambering cake blank; carrying out ring rolling operation on the heated chambering cake blank to form a ring-rolled cake blank; the square saddle penetrates through an inner hole of the scribed line cake blank, the upper die of the V-shaped groove presses downwards towards the square saddle, the scribed line cake blank is bent and flattened, and a rectangular frame final forge piece is formed. The forming method for rapidly manufacturing the large-size rectangular frame is used for manufacturing the large-size rectangular frame, and a composite manufacturing process that ring rolling and rapid chambering are matched with special tool die forging is adopted, the large-size rectangular frame is accurately and rapidly manufactured and formed, material consumption is greatly reduced, and the using performance of the whole piece is improved.

The invention discloses an assembled structure mass block for gravity energy storage and a rapid manufacturing method of the assembled structure mass block. The assembled structure mass block comprises a reinforced concrete bottom plate, an assembled balancing weight, an extending rib, a wear-resistant cushion layer and a limiting concrete pouring column. A wear-resisting cushion layer is embedded in the friction acting surface of a reinforced concrete bottom plate, a plurality of layers of spliced balancing weights are evenly distributed on the upper surface of the wear-resisting cushion layer in a matrix horizontal overlapping mode, the appearance of each spliced balancing weight is in a polygonal inwards-concave shape, and every two adjacent spliced balancing weights can mutually form a hollow interface. Extending ribs are vertically arranged on the upper surface of the reinforced concrete bottom plate relative to the positions of all the hollow connecting faces, all the limiting concrete pouring columns are formed by pouring the hollow connecting faces to the overlapping height of the splicing balancing weights through concrete, and the parts, higher than the overlapping height of the splicing balancing weights, of the extending ribs are set as weight adjusting and balancing weight areas. And the assembled structure mass block is obtained after maintenance, weighing and weight adjustment. By adopting the baking-free brick technology, the production efficiency is improved.

The application discloses a kind of manufacturing methods of structural conformal FBG sensing array, it is related to 3D printing and fiber sensing technical field, the method includes: FBG material is loaded into printing needle tube and is fixed on the mechanical arm of five-axis printer;Viscous film is laid on the motion platform of five-axis printer, start five-axis printer and print FBG material on platform surface according to pre-designed path, and control the rotation parameter of motion platform in the printing process, to increase the bending angle of FBG material when printing grating area;The translation parameter of mechanical arm is controlled simultaneously, so that the distance between needle and viscous film in vertical direction is greater than minimum preset distance;The method is based on determining the minimum preset distance between needle and platform when printing, the minimum bending radius of array bending part on viscous film, realizes the plane or curved surface manufacturing of FBG using five-axis printer, with the advantages of low cost, high efficiency, high manufacturing precision, suitable for large-scale sensing array rapid manufacturing.

The utility model discloses a steel bar reinforcing ring rapid manufacturing device which comprises a protective ring, a bearing is arranged in the center of the protective ring, a plurality of reinforcing steel plates are arranged between the bearing and the inner wall of the protective ring, the two ends of each reinforcing steel plate are fixed to the outer wall of the bearing and the inner wall of the protective ring respectively, and a connecting shaft is arranged in an inner ring of the bearing. The end, extending out of the bearing, of the connecting shaft is connected with a supporting rod, the protective ring is located between the supporting rods, the supporting rods are provided with idler wheels capable of rotating around the axes of the idler wheels, and the idler wheels are located outside the protective ring and close to the outer wall of the protective ring. According to the scheme, reinforcing steel bars needing to be bent can penetrate through the space between the protective ring and the rolling wheel and are attached to the protective ring, the reinforcing steel bars form an annular structure along with rotation of the protective ring and the rolling wheel, the overall construction efficiency is high, meanwhile, small parts on the protective ring can be utilized, so that the hoop is wound and does not disengage from a disc, and the hook length and the bending angle are effectively controlled.

We provide artificial shuttlecock feathers made from composite materials that offer the advantages of rapid manufacturing, a robust structure, and reduced consumption of natural resources. [Solution] The present invention provides a composite material artificial feather for shuttlecocks, the structure comprising a main shaft manufactured from a first plastic injection molded material and a feather valve manufactured from a second plastic injection molded material, wherein the density of the first plastic injection molded material is greater than that of the second plastic injection molded material, the feather valve covers the outside of the main shaft and has a plurality of grooves on its front surface and a flat surface on its back surface, the composite material artificial feather for shuttlecocks of the present invention is manufactured by overmolding or embedded injection molding technology, the main shaft manufactured from the first plastic injection molded material can provide sufficient structural strength, and the feather valve manufactured from the second plastic injection molded material can reduce the weight of the artificial feather.

This application discloses a method for determining whether a frequency control line is short-circuited and its application in manufacturing transmission lines, belonging to the field of superconducting quantum chip manufacturing. The method for manufacturing the transmission line includes: providing a substrate having a substrate and a conductive layer, wherein the conductive layer provides a ground plane for the superconducting quantum chip, and the conductive layer also has a window exposing the substrate; forming a conductive line in the window, having a control end close to the superconducting quantum bit and a distal end far from the control end, the distal end being disconnected from the ground plane through a gap; and, under the condition that the conductive line is determined to be disconnected from the ground plane, electrically connecting the distal end to the ground plane. This method enables rapid manufacturing of transmission lines and determination of whether a frequency control line is short-circuited.

The present invention relates to a polymerizable, radiation-curable, in particular UV / Vis-, UV- or Vis-curable composition comprising (i) monomers, wherein the monomers comprise (a.1) at least one triacrylate derived from 1,3,5-tris(ω-hydroxyalkyl)isocyanurate, wherein the hydroxyalkyl group comprises 1 to 8 carbon atoms and may be linear, branched and / or cyclic, and (a.2) at least one difunctional monomer which is not a urethane (meth)acrylate, and (ii) at least one further component comprising at least one photoinitiator for the UV and / or Vis region or a photoinitiator system for the UV and / or Vis region. Furthermore, the present invention relates to a preform in the form of a three-dimensional molded body of the polymerized composition, in particular of the radiation-cured composition, for producing a dental restorative part, an orthopedic appliance or a dental preform, and to the use of the composition for producing a dental restorative part, an orthopedic appliance or a dental preform in a rapid prototyping process or in a rapid manufacturing or rapid tooling process.

The application discloses a flexible multifunctional energetic fiber and a rapid manufacturing method thereof, the energetic fiber is laid on a target surface of a complex curved surface by 3D printing, the energetic fiber comprises a plurality of energetic units, the energetic units are connected by energetic sheets and energetic filaments, the energetic sheet is a combination of a titanium mesh and a desensitizing oxide, and the energetic filament is a titanium filament. The manufacturing method comprises the following steps: manufacturing the energetic sheet; combining the energetic sheets and the energetic filaments into the energetic fiber; and laying the energetic fiber on the target surface of the complex curved surface. The application can realize the continuous 3D printing manufacturing of the energetic fiber integrated by the energetic units on the surface of any complex curved surface, and thus rapid large-area synchronous ignition can be realized on any target needing to be burned or providing a heat source.

The present invention provides a method for manufacturing a light modulation device, the method including the step of attaching a first substrate having a glue layer or an adhesive layer formed on a first surface and a second substrate having a spacer and a liquid crystal alignment film formed on a first surface while being transported by a roller, wherein the first substrate and the second substrate are attached such that each first surface faces each other. Accordingly, the present invention can provide a so-called roll-to-roll process, whereby a light modulation device having excellent adhesion between two substrates can be rapidly manufactured while achieving a desired alignment state (e.g., a liquid crystal alignment state) of a light modulation layer.

The invention relates to a manufacturing method of a sample loading clamp for a thermal simulation testing machine. The manufacturing method comprises the following steps: 1) respectively wrapping a cylindrical material I, a cylindrical material II and a round bar material by using an isolation material belt; (2) the first cylindrical material, the round bar material and the second cylindrical material are stacked on a mold base; 3) placing an isolation material plate and a mold; 4) adding inlay powder into the semi-annular cavity; (5) the inlaid powder in the semi-annular cavity is compacted; 6) placing a mold cover on the top of the mold; (7) pressurizing, heating and preserving heat; 8) cooling and removing the pressure; 9, the mold cores are taken out, and the two sample loading clamps for the thermal simulation testing machine are obtained.The sample loading clamps used for installing samples on the thermal simulation testing machine are rapidly manufactured through an inlaying method, and the sample loading clamps are simple in structure, convenient to use, high in manufacturing precision, high in centering performance, capable of being repeatedly used and beneficial to improving the thermal simulation testing efficiency.

A device and method for continuous on-orbit manufacturing of rods based on pultrusion molding and coiled rod materials are disclosed, relating to the field of aerospace on-orbit manufacturing technology. This invention addresses the problems of existing space truss structures, which are mostly deployable, subject to mechanical environmental influences during launch, unable to be transported in large sizes, have high launch costs, and long manufacturing-launch-service cycles. Furthermore, the invention addresses the low efficiency and inability to rapidly manufacture continuous truss structures using 3D printing technology. The device employs a longitudinal beam manufacturing unit to manufacture longitudinal beams, which are then fed to a secondary beam winding unit. The secondary beam winding unit outputs three rods, adjusts their bending angle, and winds them onto the longitudinal beams. After winding, the rods are fed to an ultrasonic welding unit for welding. The welded secondary beams and longitudinal beams are then fed to a truss traction unit for traction. An overall support structure supports the longitudinal beam manufacturing unit, secondary beam winding unit, ultrasonic welding unit, and truss traction unit. This invention is suitable for continuous on-orbit manufacturing based on pultrusion molding and coiled rod materials.

This invention discloses a method and system for dynamic forming of adaptive lattice structures driven in real time by biometrics. The method involves acquiring a standard model, constructing three-dimensional parametric coordinates, and defining any point in the printing space as a voxel. Biometric data is then acquired and a 2D support force adjustment field is calculated. The 2D support force adjustment field is converted into a 2D lattice rod diameter offset field, which is then converted into a 3D lattice rod diameter offset field. The 2D lattice rod diameter offset field corresponding to the projected cross-section during printing is then calculated. Dynamic deformation is then performed on each height image based on the 2D lattice rod diameter offset field to obtain the actual projected cross-section. By integrating biomechanical sensor data with a dynamic digital light processing (DLP) engine, the adaptive lattice structure achieves in-situ control and computational manufacturing integration. This method is suitable for the rapid manufacturing of ergonomically adapted products such as medical orthopedic devices, customized sports equipment, and smart wearable devices.

A polymerisable radiation-curable composition comprising:(i) monomers, comprising at least (a) a first monomer having a TG (glass-transition point) of the homopolymer of said first monomer ≥120° C. and at least (b) a second monomer having a TG (glass-transition point) of the homopolymer of the second monomer ≤100° C., wherein at least one of the at least one first monomer or of the at least one second monomer has an alicyclic group, andcomprising (ii) at least one further component, comprising at least one photo-initiator for the UV and / or Vis spectral region or a photo-initiator system for the UV and / or Vis spectral region. Also disclosed is a blank in the form of a three-dimensional moulded body of a polymerised composition, in particular a radiation-cured composition, for producing 3D moulded bodies, dental prosthetic parts, orthopaedic appliances or dental pre-forms in a rapid prototyping, rapid manufacturing, or rapid tooling method.

The paperboard manufacturing device for the environment-friendly packaging box comprises a working frame, a corrugated indentation roller is rotationally connected to the interior of the working frame, a working table is arranged on one side of the working frame, an upper adsorption plate and a lower adsorption plate are arranged on one side of the working table, the upper adsorption plate is movably connected with the working table through a telescopic rod, and the lower adsorption plate is movably connected with the working table through a telescopic rod. Relates to the technical field of packaging box paperboard manufacturing. After the servo motor rotates to drive the corrugated indentation roller to rotate, the connecting straight gear can be driven to rotate through the gear set, so that the connecting straight gear drives the vertical rack to move, one side of the rack is fixedly connected with the paper bearing frame, and the paper bearing frame is fixedly connected with the upper adsorption plate. Therefore, the driven bevel gear can drive the height of the upper adsorption plate to be adjusted after rotating, so that corrugated paper rolled by the corrugated indentation roller can be directly glued with paper on the lower adsorption plate or the upper adsorption plate after being input to the workbench, and rapid manufacturing operation of the corrugated paper is achieved.

The invention relates to the technical field of TiAl pre-alloyed component target material powder metallurgy forming processes, in particular to a TiAl pre-alloyed target material hot isostatic pressing forming process which is suitable for preparing a high-purity sputtering target material with the purity being 4N5 or above for chips with the specification being 28 nm threads or below. The method comprises the steps that TiAl alloy is subjected to three times of homogeneous smelting alloying and then subjected to atomization powdering, TiAl alloy powder is screened and then directly loaded into a sheath to be subjected to mechanical vibration densification, hot isostatic pressing treatment is conducted on a sheath blank after staged degassing is conducted, and a high-density target blank is obtained after the sheath is removed; and the Ti50Al alloy target material component with the shape and the microscopic structure meeting the requirements is obtained after the target blank is machined. Rapid manufacturing is achieved through hot isostatic pressing forming of the pre-alloyed powder, it can be guaranteed that the powder target material component is uniform and consistent in structure component, free of air holes and high in purity, and the comprehensive performance meets the technical requirements of semiconductor chip sputtering.

Semiconductor thin films and rapid methods of fabrication can include mixed cations created through recrystalization.

The utility model discloses a simple die structure of an engineering machinery cab, which relates to the field of structures of various engineering machinery vehicle bodies, and comprises an upper die assembly and a lower die assembly, the upper die assembly comprises a first layering piece, a first welding piece, a second welding piece, a third welding piece and a fourth welding piece, the lower die assembly comprises a second layering piece, a fifth welding piece, a sixth welding piece, a sixth welding piece and an eighth welding piece. According to the simple mold structure of the engineering machinery cab, a three-dimensional model product can be quickly converted into an actual product, so that a mold can be quickly manufactured, the three-dimensional model product can be converted into a real product in a short time and at low cost by adopting the simple mold, and small-batch manufacturing can be realized; the manufacturing process and period of the grinding tool can be effectively simplified, so that the higher product output speed is achieved, and meanwhile, the manufactured engineering machinery cab is simpler and more attractive in forming effect compared with a traditional mode of manual beating.

The present invention relates to the technical field of eVTOL, and particularly to an eVTOL water landing airworthiness test method and test device. An eVTOL water landing airworthiness test method includes the following steps: fabricating an eVTOL scaled model; preparing the test device; conducting an eVTOL scaled model water entry impact test; performing finite element simulation on the eVTOL scaled model water entry impact test; and performing finite element simulation on the eVTOL full-scale aircraft water entry impact test. The present invention uses 3D printing technology to fabricate the eVTOL scaled model, solving the difficulty of traditional wood or foam materials being difficult to process the interior of the model, and achieving the purpose of quickly manufacturing eVTOL scaled models of different sizes and shapes; by comparing the test results and finite element simulation results of the eVTOL scaled model, the present invention improves the accuracy and effectiveness of the finite element analysis method in the research of eVTOL water landing, and expands the new technology of eVTOL initial airworthiness test.

The invention relates to iron-silicon-nickel alloy electromagnetic absorption ink for 3D printing and a preparation method of the iron-silicon-nickel alloy electromagnetic absorption ink, and belongs to the field of ink processing. The iron-silicon-nickel alloy electromagnetic absorption ink is prepared from the following raw materials in parts by mass: 6 to 14 parts of an iron-silicon-nickel alloy electromagnetic absorbent, 40 to 55 parts of hyperbranched polyacrylate resin, 12 to 21 parts of organic silicon modified polyurethane acrylate, 6 to 13 parts of acryloylmorpholine, 1 to 4 parts of a photoinitiator, 0.7 to 2.3 parts of a defoaming agent, 0.8 to 3.5 parts of a dispersing agent and 2 to 4.5 parts of a surfactant. According to the iron-silicon-nickel alloy electromagnetic absorption ink, the electromagnetic wave absorption capacity of a material is greatly improved, and the iron-silicon-nickel alloy electromagnetic absorption ink has a wide absorption frequency band. The cured material has high wear resistance, stable physical and chemical properties at high temperature, and is not easy to deform, and can be applied to rapid manufacturing of high-precision electromagnetic absorbers with different shapes in military and civil fields.

The utility model relates to a laser printer and a laser powder laying printing device, the laser printer comprises a plurality of laser emitters, each laser emitter emits a laser beam, the laser beam emitted by each laser emitter can act on dust to achieve fusion or sintering, the laser beams emitted by the plurality of laser emitters are parallel to each other, and the laser beams are parallel to each other. The plurality of laser beams are vertically emitted into the dust to realize a sintered printing surface, and the working state of each laser emitter is independently controlled. A plurality of laser emitters are adopted, a traditional single-laser point-by-point serial scanning mode is changed, multiple laser beams can synchronously act on different areas of a powder layer, parallel sintering is carried out on a large-area printing area, the single-layer printing time is greatly shortened, the printing efficiency is improved, and the requirement for rapid manufacturing of modern industrial large-scale production is met.