740 results about "Laser printing" patented technology

The invention discloses a colorful acid and alkali resistant laser printing ink and a preparation method thereof. The printing ink is composed of the following components in parts by weight: 0 to 30 parts of butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of pigment, and 10 to 30 parts of glycidyl ether epoxy resin. The glycidyl ether epoxy resin is adopted to produce the printing ink, aliphatic polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the laser printing product is more abundant, and the patterns are more clear.

The invention provides a laser cladding 3D / 4D printing system and method, and the method comprises the following steps: S1, constructing a three-dimensional model of a to-be-printed piece, slicing the three-dimensional model, and generating a two-dimensional interface diagram of each layer of printing; s2, the additive manufacturing material of the current layer is melted through first laser to form a cladding layer; s3, carrying out micro-shaping on the surface of the cladding layer by using second laser, firstly carrying out micro-shaping on rough and hole defect areas on the surface of the cladding layer, and then carrying out point heat source irradiation on the surface of the cladding layer to eliminate residual stress of the cladding layer; and S4, the steps S2-S3 are repeated, the additive manufacturing process of each layer is completed, and a printed piece is obtained. According to the method, ultrafast laser shaping is carried out on the cladding layer in the laser 3D / 4D printing process, so that the problems of residual stress, interface-surface holes, uneven roughness and powder agglomeration and accumulation of the cladding layer of a laser 3D / 4D printing workpiece are solved, and the quality of the laser 3D / 4D printing workpiece is improved.

The invention discloses a graphene modified high-entropy alloy particle reinforced titanium-based composite material and a preparation method and application thereof. According to the composite material, titanium or a titanium alloy serves as a titanium matrix, and graphene is modified on the surface of a high-entropy alloy and serves as a reinforced phase together with the high-entropy alloy to be distributed at the grain boundary of the titanium matrix. In the microstructure of the material, the surface of the high-entropy alloy is modified with graphene, the interface of the high-entropy alloy and a titanium matrix and the solid solution degree of the high-entropy alloy in the titanium alloy matrix are regulated and controlled, and the graphene reacts with the matrix to generate titanium carbide to jointly reinforce the titanium alloy matrix with the high-entropy alloy. According to the preparation method, the graphene is modified on the surfaces of the high-entropy alloy particles by adopting a three-dimensional rotary mixing method, the problem that impurities are easily introduced in a conventional ball milling method is solved, and the graphene-modified high-entropy alloy particle reinforced titanium-based composite material block is obtained through sintering or laser 3D printing forming. The material has high strength and high plasticity, has excellent comprehensive mechanical properties, and can be applied to the fields of aerospace, ships and naval vessels and the like.

The invention discloses eyelash cutting equipment and a manufacturing process, and relates to the field of eyelash processing technology.The eyelash cutting equipment comprises a rack, a printing platform, a laser printer and a feeding wheel, the feeding wheel, the printing platform and the laser printer are all located at the upper end of the rack, and the printing platform is located between the laser printer and the rack; a shaping device is arranged at the upper end of the rack and used for shaping materials, a separating device is arranged at the upper end of the rack and used for separating the shaped materials, a supporting plate is arranged on the side, away from the feeding wheel, of the printing platform, the supporting plate is arranged in the length direction of the printing platform, and a residual piece collecting roll and a base plate collecting roll are rotationally connected to the supporting plate. The residual piece receiving roll and the base plate receiving roll are both arranged perpendicular to the supporting plate, the residual piece receiving roll is located between the base plate receiving roll and the feeding wheel, the outer sides of the residual piece receiving roll and the base plate receiving roll are provided with adhesive tapes easy to tear in the axial direction, and a driving device is arranged on the supporting plate. The eyelash production device has the effect of improving the eyelash production efficiency.

The invention relates to the technical field of image data processing, in particular to an image adaptive optimization processing method and system for laser printing output, and the method comprises the steps: carrying out the multi-scale feature analysis and fusion of an input original scanning image, and obtaining a fused feature distribution mapping matrix; performing adaptive contrast enhancement based on the fused feature distribution mapping matrix to obtain an enhanced contrast image; performing edge feature extraction on the enhanced contrast image by using an improved multi-direction edge detection algorithm to obtain an edge feature image with an enhanced edge; performing adaptive local texture analysis and enhancement on the edge feature image to obtain a texture enhanced image; and carrying out printing adaptability optimization based on the texture enhanced image to obtain a final optimized output image. According to the technical scheme, the quality of the image printed and output by the laser printing equipment is comprehensively and remarkably improved from multiple image processing dimensions.

The invention relates to the field of high-entropy alloys, in particular to a performance regulation and control method for a hole structure of a laser 3D printing high-entropy alloy stent, which comprises the following steps: step 1, component design and mechanical property research of a medical high-entropy alloy; 2, regulating and controlling the pore structure and the performance of the laser 3D printing high-entropy alloy stent; 3, preparation of the hydroxyapatite / high-entropy alloy composite material and biocompatibility evaluation.The method has the following beneficial effects that on the basis of deep understanding of physical and chemical changes designed in the laser 3D printing technology, a correlation mechanism between technological parameters and a macro / microstructure is established; precise control over the pore structure of the key metal component high-entropy alloy material is achieved, calculation is conducted in combination with the first principle, the component optimization theory of the key metal high-entropy alloy material with the human body implantation biological material as the application target is established, and on-demand preparation of the high-entropy alloy material with high strength, high hardness and low elastic modulus is achieved.

The invention relates to the technical field of titanium alloy additive manufacturing, in particular to a nano twin crystal oxygen-containing titanium alloy based on an additive manufacturing technology and a preparation method thereof.The nano twin crystal oxygen-containing titanium alloy based on the additive manufacturing technology is characterized in that titanium alloy powder and TiO2 powder are mixed to obtain mixed powder, and the mass percent of oxygen in the mixed powder is 0.1 wt.%-0.5 wt.%; the mixed powder is subjected to laser printing, and the titanium alloy based on the additive manufacturing technology is obtained; wherein the printing parameters are as follows: the laser power is 150W to 375W, the scanning speed is 430mm / s to 1500mm / s, the scanning interval is 80mu m to 120mu m, and the volume energy density is 35J / mm < 3 > to 78J / mm < 3 >. The problem that in the prior art, the strength of the titanium alloy is generally improved at the cost of sacrifice plasticity is solved, the oxygen content of powder does not need to be strictly controlled, and the alloy is high in toughness and low in cost.

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 discloses a copper-chromium alloy contact part and a preparation method thereof, and belongs to the technical field of contact material processing. The preparation method comprises the steps that a substrate is installed, a cursor is printed on the substrate, and the cursor is consistent with the bottom face of a copper-chromium alloy contact target part in specification; bonding the connecting surface of the base body on the substrate to obtain a connected material; the connecting surface is matched with the cursor on the substrate; the connected material is fixed in a printing bin, infrared laser printing is conducted on the printing face of the base body according to preset laser additive manufacturing parameters, and a copper-chromium alloy contact part printing piece is obtained; and the copper-chromium alloy contact part printing piece is taken out to be subjected to solid solution heat treatment and separation, then groove position and inner hole machining is carried out, and a copper-chromium alloy contact target part is obtained. By means of the method, the high-strength and high-compactness copper-chromium alloy contact can be obtained.

The utility model discloses a traction type casing pipe machining all-in-one machine. Comprising a workbench, a sleeve traction assembly used for achieving sleeve feeding and keeping a sleeve in a linear state, a laser lettering and marking assembly used for achieving sleeve marking and lettering, a hot-pressing assembly used for achieving tooth hot-pressing at the two ends of the sleeve, a cutting assembly used for cutting off the sleeve and a clamping traction assembly used for achieving sleeve moving. The sleeve traction assembly, the laser printing and marking assembly, the hot pressing assembly, the cutting assembly and the clamping traction assembly are all arranged on the workbench, and the laser printing and marking assembly, the hot pressing assembly, the cutting assembly and the clamping traction assembly are sequentially arranged from left to right. The workbench is further provided with a cutting clamping assembly used for clamping the sleeve during cutting and a cutting tightening feeding assembly used for enabling the sleeve to be in a tightening state during cutting, the equipment can directly complete the working procedures of sleeve cutting, hot pressing, lettering and marking of the sleeve, and compared with the prior art, the cost can be reduced, and the efficiency can be improved.

The invention relates to a single laser printing device and method capable of modulating line width. The device comprises a focusing unit, a galvanometer unit, a light beam adjusting module and an angle adjusting module, wherein the light beam adjusting module and the angle adjusting module are sequentially arranged in front of laser light paths of the focusing unit and the galvanometer unit; the light beam adjusting module is used for modulating circular laser into long-strip-shaped laser and modulating the length of the long-strip-shaped laser according to the size of a pattern at a printing position when the same straight line is scanned; the long-strip-shaped light beams are always parallel to one another during galvanometer scanning, and laser energy in variable-width lines scanned by the galvanometer is evenly distributed. The angle adjusting module is used for adjusting the line width direction of the long-strip-shaped laser to be perpendicular to the scanning direction of the galvanometer unit. For different positions in each printing area, the laser is modulated into long-strip-shaped laser with the width consistent with the width of an image at the printing position through the light beam adjusting module, then the width direction of the long-strip-shaped laser is perpendicular to the scanning direction of the galvanometer through the angle adjusting module, and scanning of one printing area can be achieved only through one-time scanning of the galvanometer unit. And the printing precision is ensured while the printing efficiency is greatly improved.

The invention provides a multi-laser 3D printing control method, a multi-laser 3D printing control system, electronic equipment and a storage medium, and aims to realize multi-laser workload equipartition and optimize the multi-laser 3D printing working efficiency to the greatest extent. The method comprises the steps of obtaining at least one part digital model corresponding to at least one target part, performing slicing processing, and determining a two-dimensional contour graph corresponding to the at least one part digital model in a plurality of slicing layers; in the slice layer, the two-dimensional contour graph is scanned and divided, and a plurality of scanning path line segments are generated; dividing the plurality of scanning path line segments in the slice layer into a plurality of line segment groups corresponding to the plurality of laser generators, wherein the workload corresponding to the plurality of line segment groups is equal; traversing the plurality of slice layers, and determining a plurality of line segment groups corresponding to each laser generator in the plurality of slice layers; and the multiple laser generators are controlled to execute 3D laser printing according to the multiple corresponding line segment sets.

The invention discloses a laser printing assisted reduced pressure filtration preparation process of an electromagnetic loss metasurface, which belongs to the field of microwave communication, has the advantages of short time consumption and low cost, and is suitable for small-batch design and preparation in product research and development. The electromagnetic loss metasurface template is prepared through a laboratory laser or ink-jet printing technology to obtain the microfiltration membrane mask, operation is convenient and fast, consumed time is short, and cost is low. The electromagnetic loss metasurface is obtained by pattern deposition on a microfiltration membrane mask through a decompression suction filtration process, and finally the electromagnetic loss metasurface is obtained through transfer printing and packaging. The preparation process has wide application prospects in the fields of aerospace, radar communication, medical electronics and the like.

A graphene neural electrode, a preparation method therefor, and use thereof. The preparation method comprises the following steps: (1) performing laser printing on a polyimide film according to a preset electrode pattern to obtain laser-induced graphene; (2) subjecting the laser-induced graphene to transfer printing to a water-soluble adhesive tape, then arranging a thermoplastic polymer thin film on one side of the laser-induced graphene away from the water-soluble adhesive tape, and then removing the water-soluble adhesive tape, so that the laser-induced graphene is subjected to transfer printing to the thermoplastic polymer thin film to obtain a first prefabricated product; (3) placing the first prefabricated product in a conductive polymer monomer solution for electrochemical polymerization, and forming a conductive polymer layer to obtain a second prefabricated product; and (4) arranging a thermoplastic polymer packaging layer on the conductive polymer layer of the second prefabricated product to obtain the graphene neural electrode. The graphene neural electrode prepared by using the method has excellent flexible characteristics and mechanical properties, high mechanical and electrochemical stability, and low electrochemical impedance, thereby achieving long-term stable signal monitoring in an organism.

The invention discloses a tungsten skeleton copper infiltrated blank preparation method which comprises the following steps: grading, mixing and sieving tungsten powder with different particle sizes to obtain mixed tungsten powder; based on the mixed tungsten powder, a tungsten framework is obtained through laser printing; performing density judgment on the tungsten skeleton; and the tungsten skeleton with the qualified density is subjected to copper infiltration treatment, and a tungsten skeleton copper infiltration blank is obtained. According to the method, the physical and mechanical properties of the tungsten skeleton copper infiltrated blank can be optimized while the good electric conductivity is kept.

The invention discloses a multi-laser 3D printing beam spot verification method and system, and belongs to the technical field of laser processing control. The method comprises the following steps: acquiring multi-physical field signal data such as thermal response, stress, pressure and the like of a plurality of laser sources, and performing synchronous fusion to obtain comprehensive physical field data; extracting thermal response data of a laser beam spot area, and performing fusion analysis on the thermal response data and the comprehensive data to obtain position offset characteristic data; performing Fourier transform on the thermal response data, extracting frequency domain characteristic data, and further processing to obtain beam spot frequency characteristic data; generating verification standard data in combination with the self-adaptive thermal response threshold value; fusing external temperature, humidity and interference information to generate environment adaptability data, and obtaining optimized signal processing data; and finally, laser beam spot precision data is obtained. According to the scheme, the stability, the consistency and the intelligent response capability of the multi-laser system in a high-precision manufacturing scene are improved, the printing quality can be improved, the defect rate is reduced, and the service life of equipment is prolonged.

The invention discloses a high-strength and high-thermal-conductivity copper-boron alloy in a high-temperature environment, which comprises the following components in percentage by mass: 2.0-4.0% of boron element and the balance of Cu, the organization structure is composed of copper crystal grains and a boron film, and the boron film is clamped between the copper crystal grains to separate and wrap the copper crystal grains. The invention further discloses a method for preparing the high-strength and high-thermal-conductivity copper-boron alloy, a laser 3D printing technology is adopted, the characteristic of rapid non-equilibrium solidification of laser 3D printing is utilized, a molten pool is controlled at the micron dimension, and the periphery of copper grains is wrapped with a boron phase in a film form through rapid non-equilibrium solidification. The heat conductivity of the copper-boron alloy at 600 DEG C exceeds 200 W / (m.K), the tensile strength exceeds 300 MPa, and the comprehensive performance of the copper-boron alloy in the high-temperature environment is superior to that of a conventional copper alloy.

The invention discloses an artificial intelligence-based printer energy consumption optimization control system and method, and relates to the technical field of printer energy consumption optimization control, and the artificial intelligence-based printer energy consumption optimization control method specifically comprises the following steps: 1, collecting multi-source data of a laser printer, the method comprises the steps of 1, acquiring original data, transmitting the acquired original data to a cloud AI analysis platform or a local edge calculation program for processing, 2, collecting historical data, quantifying the relevance between the comprehensive environmental comfort index and the power consumption of the laser printer, and defining different task processing time periods, and 3, predicting the historical data by using an LSTM prediction model, and according to a prediction result, calculating the power consumption of the laser printer according to the prediction result. According to the scheme, through multi-source data fusion and AI prediction, a weighted comprehensive environment comfort index is provided, multi-parameter cooperative influence is quantized, the future task probability and the environment trend are predicted based on historical data, and the working mode is dynamically adjusted to achieve balance of energy consumption and efficiency.

The invention relates to the technical field of light paths, and particularly discloses a laser shaping system and a laser printer, the laser shaping system comprises an LD collimating lens, a rotating mirror, a focusing lens and a focusing surface which are arranged in sequence; the LD collimating lens is used for receiving a first fast-axis laser beam and a first slow-axis laser beam, converting the first fast-axis laser beam into a fast-axis collimated beam, and converting the first slow-axis laser beam into a slow-axis collimated beam; wherein the fast axis collimated light beam and the slow axis laser light beam are parallel light beams; the rotating mirror is used for performing deflection processing on the fast-axis collimated light beam to obtain a second fast-axis laser beam, and performing deflection processing on the slow-axis laser beam to obtain a second slow-axis laser beam; and the focusing lens is used for focusing the second fast axis laser beam and the second slow axis laser beam to the focusing surface. The invention can bear high-power laser, and is low in light path cost and easy to process.

The invention discloses an objective table of a laser 3D printer. The objective table is applied to the field of objective tables of laser 3D printers. Comprising an upper base, symmetrically-arranged carrying plates, a rotating unit and a cleaning box, the rotating unit comprises a fixing rod, one end of the fixing rod is fixedly connected with the lower surface of the upper base, a fixing plate is fixedly connected to the fixing rod, a first driving motor is fixedly installed on the fixing plate, and the other end of the fixing rod is rotationally connected with a rotating base; an outer gear ring is fixedly connected to the upper surface of the rotating base, a first gear is fixedly connected to the rotating end of the first driving motor, supports are symmetrically and fixedly connected to the rotating base, second electric lifting rods are fixedly connected to the supports, and a U-shaped base is fixedly connected to the moving ends of the second electric lifting rods; the carrying plate is connected with the U-shaped base through the moving unit, and the cleaning box is fixedly connected with the upper base. The device is novel in design and reasonable in structure, and the 3D model printing efficiency can be improved.

The invention discloses composite material laser welding equipment and a welding method, and belongs to the field of laser printing, the composite material laser welding equipment comprises a base plate, a wire feeding mechanism, a rotary shearing mechanism, a rolling mechanism and a laser heating mechanism are installed on the base plate, the laser heating mechanism comprises a first dovetail groove sliding table and a second dovetail groove sliding table, and the second dovetail groove sliding table is vertically and fixedly installed on the base plate; the first dovetail groove sliding table is located below the second dovetail groove sliding table, a first connecting plate is fixedly arranged on a carriage of the second dovetail groove sliding table, the first dovetail groove sliding table is fixedly installed on a second connecting plate in an obliquely downward mode, and the end, close to the rotary shearing mechanism, of the second connecting plate is hinged to the first connecting plate through a first connecting rod. And the other end of the second connecting plate is connected with the first connecting plate through a telescopic adjusting structure, a laser head is fixedly arranged on a dragging plate at the bottom of the first dovetail groove sliding table, the angle, height and focusing position of a laser beam can be controlled, and the welding requirements of composite materials of different shapes and sizes are met.

The invention discloses an in-situ heat treatment laser powder bed melting device and an application method thereof, and belongs to the technical field of metal additive manufacturing. The device comprises a forming chamber, a laser powder bed melting system, a heat treatment system and a control system, the laser powder bed melting system comprises a powder laying and feeding system and a laser system, the powder laying and feeding system is used for conveying metal powder into the heat treatment system, and the laser system is used for conducting laser printing on the metal powder in the heat treatment system; the heat treatment system is used for conducting in-situ heat treatment on slices or components formed through laser printing, and the control system is used for controlling operation of all the systems. The laser powder bed melting technology and the heat treatment technology are combined, the forming process and the heat treatment process are alternately carried out, the printing efficiency is improved, high-quality forming is achieved, meanwhile, residual stress can be rapidly eliminated, the mechanical property can be improved, and the forming quality of metal laser powder bed melting large-layer-thickness printing is greatly improved.

The invention provides a cooling device for a laser 3D printer. The cooling device comprises a 3D printer body, a lifting table, a laser head, a middle partition conduction mechanism, a heat transfer circulation flow part, a backflow supply part and an air cooling module. The lifting table is arranged in the 3D printer body, the laser head is arranged on the lifting table, the middle partition conduction mechanism is arranged on the lifting table and the laser head, and the heat transfer circulating flow part is arranged on the 3D printer body, the lifting table and the middle partition conduction mechanism. The backflow supply part is arranged on the heat transfer circulation part, and the air cooling module is arranged on the 3D printer body; according to the cooling device for the laser 3D printer, a heating source is accurately, effectively and stably cooled for a long time in an efficient heat dissipation mode, heat transmission is fundamentally reduced, an air cooling module is used for assisting with traditional air cooling heat dissipation, it is guaranteed that the excellent cooling effect is obtained under the combined action of double measures, and the cooling effect is improved. The temperature in the 3D printer body is practically and effectively controlled within a reasonable range, and stable work and high-quality printing of the 3D printer body are ensured.

The invention discloses a support generation method and system of a 3D model, a 3D printing method and device, a binder jet manufacturing system, a photocuring printing system, a laser printing system, a computer device, a computer readable storage medium and a computer program product. The support generation method of the 3D model comprises the following steps: generating a main body structure according to an offset parameter corresponding to a construction plane or a predefined size parameter and a first thickness parameter corresponding to the construction plane, and generating an intermediate structure based on the 3D model and a margin parameter; wherein the size parameter is not smaller than the size of a bounding box of the 3D model corresponding to a building plane; a Boolean operation is performed to remove the intermediate structure from the body structure to generate a support for the 3D model.

The invention provides a laser printer printing task intelligent optimization method and system, and relates to the technical field of data processing, and the method comprises the steps: receiving a first printing task queue of a laser printer, carrying out the task analysis, and determining the task characteristics of each printing task in the first printing task queue; collecting real-time state information of the laser printer, analyzing the real-time state information and task characteristics of the printing tasks, and determining priority labels of the printing tasks in the first printing task queue; printing task scheduling sorting is conducted on all the printing tasks in the first printing task queue according to the priority labels, a second printing task queue is obtained, and the printing tasks are sequentially executed based on the second printing task queue; and monitoring the printing state in real time in the printing execution process, and when the printing state changes, performing scheduling optimization on the second printing task queue again according to the multi-target optimization model, generating a third printing task queue and executing the third printing task queue until the printing task is completed.

The invention provides a 3D printing metal material and a modification method thereof, and relates to the technical field of metal modification. According to the modification method of the 3D printing metal material, metal titanium / titanium alloy for laser 3D printing serves as an initial material, a wrapping material and a packaging layer are sequentially formed to obtain a synthetic block, and then the 3D printing metal titanium with high toughness is obtained through a direct high-pressure treatment process. The ultra-high pressure can inhibit long-range diffusion of atoms, so that coarsening of crystal grains at high temperature is avoided; meanwhile, grain refinement can be generated in the metal titanium / titanium alloy through high pressure, and therefore the strength of the metal titanium / titanium alloy is improved; the defects such as holes and microcracks in the metal component can be repaired through high pressure; more dislocation, twin crystal and other strengthened defect structures can be generated in the metal part at high temperature and high pressure; high-temperature heat treatment under high pressure can eliminate residual stress and distribution of a non-uniform phase, and the ductility is improved.

The invention discloses a laser printing method, a laser printer and a storage medium, and the laser printing method comprises the steps: carrying out the gray conversion of a to-be-printed image, and obtaining a gray image; determining an initial laser energy value of each pixel point in the grayscale image; for each pixel point in the grayscale image, determining a laser energy compensation value of each pixel point in the grayscale image according to the initial laser energy value of each pixel point in the adjacent region; determining a target laser energy value of each pixel point in the grayscale image according to the laser energy compensation value and the initial laser energy value of each pixel point in the grayscale image; and printing the to-be-printed image according to the target laser energy value. The initial laser energy value of each pixel after gray level conversion of the to-be-printed image is compensated through the laser energy compensation value, the target laser energy value for printing is determined, printing is carried out, the image texture of art sketches can be simulated during printing, efficient printing is achieved, and meanwhile the quality of the printed image is guaranteed.

The invention discloses a component design method of a precipitation strengthening type nickel-based alloy capable of resisting laser 3D printing forming cracking, and relates to the technical field of additive manufacturing engineering. According to the method, the Nb source is introduced into the precipitation strengthening type nickel-based alloy with the total content of Al and Ti larger than or equal to 5.5 wt%, the Nb content is precisely regulated and controlled to range from 1.5 wt% to 5 wt%, the stress concentration problem in the solidification process can be effectively relieved, and therefore cracks in the laser 3D printing process are remarkably inhibited. According to the method, forming cracks can be thoroughly eliminated, it can be ensured that the alloy has the excellent high-strength characteristic, meanwhile, the comprehensive mechanical property is greatly improved, and a brand new technical means is provided for preparation of high-precision and high-performance nickel-based alloy components.

The invention relates to a galvanometer size precision calibration method. According to the galvanometer size precision calibration method, laser printing is carried out through additive manufacturing equipment so as to obtain a printing test image; using an automatic identification model to control a CCD camera to identify the coordinate value of each point in the printing test image, and obtaining a coordinate data file; obtaining a galvanometer deviation value according to the coordinate data file and the galvanometer execution file; if the absolute value of the galvanometer deviation value is larger than a preset deviation value, parameters in the galvanometer execution file are calibrated and modified according to the galvanometer deviation value, and then the step that the laser film is attached to the laser galvanometer scanning area of the additive manufacturing equipment and all the following steps are executed again till the absolute value of the galvanometer deviation value is smaller than the preset deviation value. Therefore, in the whole process, large-format pattern printing is not needed, pattern shearing and splicing are not needed, the calibration precision can be improved, the CCD camera recognition platform is easy to disassemble and assemble, the size is small, and the device has the advantages of being convenient to carry and use during after-sales service.

The utility model discloses a flying printing device and a 3D printer, the flying printing device comprises a printing substrate and a laser printing member, and also comprises slide rails, a slide plate, two powder flattening members and two powder spreading members, the slide rails are located at two sides of the printing substrate, the slide plate is slidably connected to the slide rails, and the laser printing member is located between the two powder flattening members and the two powder spreading members. The laser printing component and the powder spreading components are connected to the sliding plate, and the two powder spreading components are located on the two sides of the laser printing component correspondingly and can be located below the powder flattening component. The 3D printer comprises the flying printing device. The laser printing device has the advantages that powder is laid on the printing base plate in the moving process of the powder laying component, meanwhile, the laid powder is melted in the moving process of the laser printing component, powder laying, powder scraping and printing can be achieved at the same time in the back-and-forth moving process of the sliding plate, and the printing efficiency is improved.