76 results about "Laser fabrication" patented technology

The invention discloses a frequency selective surface conformal pattern electric jet printing and laser etching combined machining device for a complex curved surface and a control method of the frequency selective surface conformal pattern electric jet printing and laser etching combined machining device, and belongs to the field of additive and subtractive combined machining and manufacturing, the device comprises a bed body module, a movement module, a jet printing module and a control module, and a numerical control G code program is generated through complex curved surface functional structure laying software; a machine tool driving box is controlled by an upper computer to be matched with a machine tool body and a movement module, accurate execution of a complex curved surface jet printing path in the jet printing-laser manufacturing process is completed, and on-demand manufacturing of functional structures of different types and different materials can be achieved by changing printing parameters of a flow field controller and an electric field controller in the jet printing module.

The invention belongs to the technical field of laser manufacturing and green manufacturing, and discloses an ultrahigh-power laser low-loss repair method for deep defects of a thick plate, which comprises the following steps: identifying the positions, types and three-dimensional shapes of the surface and deep defects (pores and cracks) of the thick plate through a phased array ultrasonic detection module (PAUT); on the basis, a laser space energy distribution repairing path for specific defects is automatically planned; carrying out an ultra-high power laser defect remelting process; finally, whether the surface and the deep part of the thick plate have defects or not is recognized again through the ultrasonic detection module, low-damage repair of the deep part defects of the thick plate is achieved, and the use efficiency and the service life of a repaired part are improved.

Disclosed are a laser manufacturing microstructure partition regulation and control device and a corresponding method based on matrix modular temperature control. An inner portion of the device's console provides a plurality of temperature regulation and control elements arranged in a matrix form so that a workpiece is divided into different areas. During the laser manufacturing process, the temperature of the workpiece is monitored in real-time via a temperature detector; a wireless communication device is used for feeding back the collected data to a computer; the computer judges whether the workpiece needs to be heated or cooled, then the signal is transmitted to the wireless communication device, and the console controls an induction coil or a cooling nozzle to perform partition regulation and control on the temperature of the workpiece according to the signal so that the workpiece has a specific temperature gradient from a cladding layer to a substrate direction.

The invention belongs to the technical field of laser manufacturing digital twinning, discloses a laser processing molten pool-keyhole dynamic behavior efficient numerical simulation method and system, and aims to solve the problem of full-weld large-scale simulation computing resource shortage, and adopts a dynamic slippage technology to reduce a large computing domain and reduce the computing resource demand. In order to solve the problem of information confusion caused by LBM high-dimensional data hybrid communication, a dimension reduction communication technology is adopted, high-dimensional data is expanded in one dimension, and efficient and unified communication between parallel processes is guaranteed. In order to solve the problem that the interface position is difficult to track, a serial and parallel mixed mode is adopted on a program architecture, phase field sequence parameters in a sub-process are collected into a host process, and accurate tracking of the interface position is achieved. Based on the lattice Boltzmann method (LBM) which is easy to parallelize, has a solid physical basis and is higher in simulation precision, the MPI parallel computing technology is combined to carry out numerical simulation on the evolution process of the full-weld-seam large-scale molten pool-keyhole in laser processing, and through efficient and accurate computing and communication, the simulation precision of the full-weld-seam large-scale molten pool-keyhole is improved. All-weld-seam large-scale laser processing numerical simulation becomes possible, and technical support is provided for shape prediction of long weld seams of large components.

The invention relates to the technical field of laser manufacturing and intelligent manufacturing, in particular to a residual stress and deformation prediction method for a laser directional energy deposition TA15 alloy component, and the method comprises the following steps: constructing a thermal-metallurgical-mechanical multi-physics field coupling model; firstly, a transient temperature field model comprehensively considering heat conduction, convection and radiation effects in the laser directional energy deposition process is established based on the Fourier heat conduction theory; then, a metallurgical model is established based on the phase change principle, finally, a multi-stage phase change kinetic model is established, and diffusion control type and non-diffusion type transformation mechanisms are considered at the same time; a phase change kinetic model is introduced into a sequentially coupled thermal-mechanical framework, so that multi-scale integrated prediction from microstructure evolution to macroscopic stress distribution is realized; and a theoretical basis is provided for microstructure regulation and control and residual stress optimization of the TA15 alloy LDED process.

According to the intelligent laser manufacturing system and method based on the natural language or the image, after a user inputs information through a natural language instruction or uploads a target image, a laser manufacturing large language model module analyzes input content and generates a corresponding SVG vector code, and a point cloud coordinate generation agent module generates point cloud coordinate data according to the SVG vector code; the data is transmitted to a laser manufacturing system module through a data transmission and control module to control a scanning galvanometer or a micro / nano translation stage to execute processing, so that the manufacturing of a target structure is completed; integrated automatic processing of micro-nano structure design, path generation and laser processing can be achieved, the operation complexity and the use threshold are remarkably reduced, the processing efficiency and the manufacturing precision are improved, and the method has the technical advantages of being high in intelligent degree, easy and convenient to operate and wide in application prospect.

The invention provides an in-situ thermal field induction heating module design method and device, and relates to the technical field of laser manufacturing, and the in-situ thermal field induction heating module design device comprises an optical fiber laser, a laser cladding nozzle, a six-axis mechanical arm, a coil adjusting structure, an induction coil, an induction power supply, a water cooling machine, a molten pool monitoring and control system and a base material; the optical fiber laser is connected with the laser cladding nozzle, the six-axis mechanical arm is used for controlling the laser cladding nozzle to move, and the coil adjusting structure is installed on the six-axis mechanical arm and connected with the induction coil so that the induction coil can synchronously move along with the laser cladding nozzle. The sprayed metal powder is solidified on the base material to form a cladding layer, the induction power supply generates high-frequency current and conducts the high-frequency current to the induction coil, the induction coil heats the cladding layer, and the water cooling machine is used for cooling the induction coil; the molten pool monitoring and control system is installed on the side face of the molten pool and used for monitoring thermal field distribution of the molten pool in real time. The method has the advantage that the problem that defects such as cracks and air holes are prone to being generated in the laser cladding process is solved.

A method of manufacturing a graphene-metal composite includes providing a metal substrate having a graphene precursor layer disposed thereon and irradiating the graphene precursor layer disposed on the metal substrate with a laser to transform the graphene precursor layer into graphene and to embed and bond the graphene in the metal substrate to produce a graphene-metal composite having at least one enhanced characteristic. A system for manufacturing a graphene-metal composite includes a stage configured to support a metal substrate having a graphene precursor layer disposed thereon, a laser configured to irradiate the graphene precursor layer disposed on the metal substrate, and a controller configured to control at least one irradiation setting of the laser to transform the graphene precursor layer into graphene and to embed and bond the graphene in the metal substrate to produce a graphene-metal composite having at least one enhanced characteristic.

The invention belongs to the technical field of laser manufacturing, and relates to a method for regulating and controlling an interface between laser reduction deposited metal and a transparent substrate, which comprises the following steps of: coating a precursor material on the surface of the transparent substrate, and irradiating the interface between the precursor material and the transparent substrate by adopting ultrashort pulse laser through the transparent substrate; and the ultra-short pulse laser scans the interface of the precursor material and the transparent substrate for multiple times according to a preset path for laser direct writing, and a patterned metal structure is obtained. The ultra-short pulse laser penetrates through the transparent substrate from the back to irradiate the precursor material / substrate interface, thickness limitation on the precursor material is avoided, and in the multiple laser scanning process, the temperature of the metal / substrate interface exceeds the chemical bond fracture and recombination temperature, so that more chemical bonds are formed on the two sides of the transition layer, and the performance of the transition layer is improved. The chemical bonding degree of a metal / substrate interface is improved, interface regulation and control of the metal and the transparent substrate are achieved, and a patterned metal structure is obtained.

The present invention relates to an insert element (10) for producing a tread profile of a vehicle tire in a vulcanizing station, wherein the insert element (10) is manufactured using a selective laser manufacturing (SLM) process. The insert element (10) comprises a lamellar element (12) for generating a cut, in particular a fine cut, in the tread profile and a surface element (14), wherein the surface element (14) has a first side (22) with a rough surface for generating a roughness of the tread profile.

The invention relates to a method for predicting geometrical characteristics of a laser directional energy deposition layer based on machine learning, and belongs to the technical field of laser manufacturing and intelligent manufacturing. The method comprises the following steps: S1, establishing a fusion data set; s2, establishing a model related to the technological parameters and the shape of the deposition layer; s3, establishing a method based on improved Rime-LSBboost to predict the morphology of the sedimentary layer; s4, inputting the fusion data set into the proposed Rime-LSBboost method for training and optimization, and predicting the morphology of the sedimentary layer; and S5, evaluating the influence of different factors of the fusion data set on the prediction model by adopting an SHAP method. According to the method, the sedimentary layer experimental data and the numerical simulation data are fused, so that the morphology of the sedimentary layer in the laser directional energy deposition process is effectively predicted. It is proved that by means of the experimental data and simulation data fusion method, the morphology of the sedimentary layer can be effectively predicted, prediction accuracy is improved, resources are saved, and prediction efficiency is improved.

The application discloses a high-temperature-resistant film temperature sensor preparation method based on laser manufacturing. First, a precursor film of a polymer precursor ceramic is coated on a substrate. After being heated to 180 DEG C or being naturally placed to solidify, the precursor film is scanned by a fiber laser in a certain mode, and the unnecessary part is removed, and the pattern part is left, so that the polymer precursor ceramic sensing film is simultaneously completed by patterning and pyrolysis. By using the technical scheme, the problems of a wide pattern, low preparation efficiency and high cost of the polymer precursor ceramic film are solved.

The present invention discloses a method and device for online monitoring of laser directed energy deposition strain prediction, the method comprising: acquiring an image data set during the manufacturing process of a processed part and performing data preprocessing to obtain a preprocessed image data set; introducing significant feature analysis to construct a multi-scale multi-modal fusion prediction model; performing laser directed energy deposition strain prediction on the preprocessed image data set based on the multi-scale multi-modal fusion prediction model to obtain a prediction result of the laser directed energy deposition strain value during the manufacturing process of the processed part. The device comprises: a laser DED manufacturing system and a manufacturing monitoring system. The embodiments of the present invention can improve the efficiency of laser directed energy deposition strain prediction and the accuracy of laser directed energy deposition strain prediction. As an online monitoring method and device for laser directed energy deposition strain prediction, the present invention can be widely used in the field of laser directed energy deposition technology.

Plasma shielding issues in pulsed laser manufacturing processes are addressed by systems and methods that divide pulsed laser scan lines into irradiation-positioned subsets. The subsets are generally offset from each other along the scan lines. Within each subset, the illumination positions are spaced apart from each other by a predetermined spacing distance. Thus, the illumination localization included in a given subset intersperses with the illumination localization included in other subsets. The predetermined spacing distance is at least partially selected to minimize plasma shielding effects.

An air vent apparatus for a vehicle according to one embodiment of the present disclosure includes a rear wing having a plurality of lead wires plated in a longitudinal direction by a laser manufacturing antenna (LMA) method, and a knob connected to the rear wing and configured such that a position of the knob is horizontally adjustable.At this point, the knob includes a housing surrounding a partial section of the rear wing, an electrode portion located inside the housing and having input and output terminals electrically connected to the lead wire, and a light source electrically connected between the input and output terminals of the electrode portion to emit light into a vehicle.

The invention discloses a method for preparing a high-temperature-resistant film temperature sensor based on laser manufacturing, which comprises the following steps of: firstly, coating a precursor film of polymer precursor ceramic on a substrate, heating to 180 DEG C or naturally placing and curing, scanning the precursor film by adopting a fiber laser according to a certain mode, and removing unnecessary parts, so as to obtain the high-temperature-resistant film temperature sensor. The left pattern part is the polymer precursor ceramic sensing film with patterning and pyrolysis completed synchronously. By adopting the technical scheme provided by the invention, the problems of relatively wide pattern, low preparation efficiency and high cost of the current polymer precursor ceramic film are solved.

The invention discloses a semiconductor laser quantum well hybrid device and a semiconductor laser preparation process, and the device automatically achieves the plating of a three-layer film structure on the surface of a wafer through a photoresist spraying assembly, a photoresist cleaning assembly, a pure silicon magnetron sputtering coating assembly, a silicon nitride magnetron sputtering coating assembly and a pure iron magnetron sputtering coating assembly. The surface of the wafer is heated through the heating disc, then kinetic energy is provided for silicon atoms after heat enters the pure silicon film, the silicon atoms move and diffuse in the depth direction of the area, needing diffusion, of the wafer, and due to the fact that the three-layer film structure only exists in the area, needing diffusion, of the surface of the wafer, and heat distribution is only limited to the area needing diffusion. The transverse diffusion speed of silicon atoms can be effectively controlled; silicon atoms are diffused to a specified depth along the depth direction of a quantum well region according to requirements, and a stable and reliable semiconductor laser is obtained.

An execution plan segment of an execution plan can be received at a control unit of a computer numerically controlled machine from a general purpose computer. The execution plan segment can define operations for causing movement of a moveable head of the computer numerically controlled machine to deliver electromagnetic energy to effect a change in a material within an interior space of the computer numerically controlled machine. The execution plan segment can include a predefined safe pausing point from which the execution plan can be restarted while minimizing a difference in appearance of a finished work-product relative to if a pause and restart are not necessary. Operations of the computer numerically controlled machine can be commenced only after determining that the execution plan segment has been received up to and including the predefined safe pausing point by the computer numerically controlled machine.

This invention provides an apparatus and method for non-destructive laser fabrication of anti-glare glass, belonging to the field of glass manufacturing. The apparatus includes an ultrafast laser atomization unit, a high-temperature passivation unit, and a sample-changing unit. The ultrafast laser atomization unit uses an ultrafast laser to perform laser scanning etching on the glass to be processed, forming random micro / nano structures on its surface to obtain atomized glass. The high-temperature passivation unit heats the surface of the atomized glass to remelt its micro / nano structures, adjusting gloss, haze, and transmittance to obtain anti-glare glass. The sample-changing unit transports the atomized glass and anti-glare glass to exchange samples between the laser atomization unit and the high-temperature passivation unit. This invention can form a random textured anti-glare structure on the surface of the glass to be processed, thereby reducing its reflectivity to incident light and achieving an anti-glare effect. Furthermore, it exhibits good wear resistance and scratch resistance, and can directly process glass of any thickness.

This invention relates to the field of polymer waveguide fabrication technology, specifically disclosing a method for processing a 45° micromirror on the end face of a polymer waveguide, comprising the following steps: Step S1: Determining the forming quality characterization of the 45° micromirror on the end face of the polymer waveguide; Step S2: Determining the initial range of influencing factors affecting the quality of the 45° micromirror on the end face of the polymer waveguide fabricated by femtosecond laser; Step S3: Determining the laser incident mode, using a waveguide substrate tilted at 45° to the horizontal plane, with the laser incident perpendicular to the horizontal plane; Step S4: Optimizing the influencing factors to obtain the optimal parameter combination; Step S5: Conducting experiments with the optimal parameter combination, detecting and analyzing the experimental results. The femtosecond laser fabrication of the 45° micromirror on the end face of the waveguide of this invention results in small surface roughness and angle deviation, leading to higher integration, greater transmission efficiency, and lower coupling loss in the link formed by coupling the polymer waveguide and optical transceiver devices.

Laser fabricated graphene fiber which can be prepared from a fluorinated polyimide fiber is disclosed. The graphene fiber exhibits an ultrahigh specific surface area, facilitating excellent electrochemical properties, useful for example in tranducers, capacitors, and micro-supercapacitors.

To provide a method of forming an object from a material.SOLUTION: The method includes directing a first beam of light toward a first target location of the material to define a first portion of the object. The method also includes, after directing the first beam of light toward the first target location, determining an optical correction to be applied by an optical system. The optical correction is based on an atmospheric change in an atmospheric distortion region proximate to the first target location due, at least in part, to interaction of the first beam of light and the material. The method further includes directing a second beam of light toward a second target location of the material to define a second portion of the object. The second beam of light is directed through at least a portion of the atmospheric distortion region while the optical correction is applied.SELECTED DRAWING: Figure 1

The present invention relates to a smart denture with an embedded thin film sensor manufactured using a femtosecond laser, a manufacturing method therefor and a health monitoring system and, more specifically, to a denture comprising a thin-film-type sensor provided on one side of the denture, wherein the sensor includes: a substrate; a deposition layer deposited on the substrate; and a circuit part having a circuit pattern formed by partially removing the deposition layer, the circuit part being manufactured by a laser printing method in which the deposition layer is irradiated with femtosecond laser pulses by means of a femtosecond laser system.

The application provides a composite manufacturing method for printing functional devices in a space environment, and the method comprises the following steps: slicing, moving a printing platform to a target position, supplying paving material, light curing forming, performing microstructure processing on a green ceramic substrate based on laser engraving, filling metal conductive material, controlling the printing platform to descend by one layer thickness, returning to step 2, and performing composite multi-material fine printing of the next printing layer, and continuously circulating in this way, so as to finally form a functional device with a complex structure. The application provides a new composite manufacturing method combining a light curing process, a laser manufacturing process and an inkjet / extrusion process, solves the printing problem of mixed manufacturing functional devices in a space environment, realizes high-precision on-orbit manufacturing of complex functional devices in a microgravity environment, and finally meets the demand of on-orbit application.

The invention discloses a dynamic parameter adjustment 2-micron laser welding system based on complex high-molecular polymers, and belongs to the technical field of high-molecular material processing and laser manufacturing. The problems that the depth of a molten pool is difficult to control, the welding uniformity is poor and the bonding strength is insufficient due to the fact that the material characteristics of an existing 2-micron laser welding technology are diversified, the dynamic change of thermal behaviors in the welding process is remarkable and a welding mode with fixed parameters is difficult to adapt in real time are solved. The melting state and the interface behavior of a material in the welding process are monitored in real time, and laser output parameters are dynamically adjusted according to the monitoring result. According to the method, the limitation of a traditional fixed parameter mode is broken through, welding process parameters can be flexibly optimized according to changes of material characteristics and machining states, and therefore the welding process is accurately controlled.

The present disclosure relates to a graphitization apparatus for manufacturing artificial graphite using lasers, including: a first chamber having doors located on both walls thereof in such a way as to be open when saggars go in and out and providing a workspace for graphitization of raw materials filled in the saggars; a laser heater consisting of a plurality of laser systems and irradiating laser beams onto the raw materials introduced into the first chamber to graphitize the raw materials; and a first transfer conveyor for sending the saggars filled with the raw materials to the first chamber and taking the saggars out of the first camber after the graphitization has been completed.

The present invention belongs to the field of alloy material technology, specifically relating to an iron-based alloy material for laser manufacturing of long steel rolls and a preparation method thereof. The iron-based alloy material of the present invention, the alloy powder material, comprises the following components by weight: La: 0.3-2%, Cr: 5-13%, Ni: 2-6%, Ti: 0.5-4%, B: 2-5%, Nb: 1-3%, and Fe: the balance. The present invention designs a laser composite manufacturing method for small-spot thin-layer cladding, successfully producing a cladding layer with a thickness greater than 10 mm.

The problem of plasma shielding in pulsed laser shaping processes is addressed by a system and method that divides a pulsed laser scan line into subsets of irradiation locations. The subsets are typically offset from one another along the scan line. Within each subset, the irradiation locations are separated from one another by a predetermined separation distance. Thus, the irradiation locations in a given subset are interleaved with the irradiation locations in other subsets. The predetermined separation distance is selected at least for the purpose of minimizing plasma shielding effects.

The present invention relates to a graphitization apparatus for manufacturing artificial graphite using a laser. The graphitization apparatus comprises: a first chamber having doors on opposite walls, the doors being opened only when a saggar enters and exits, and providing a working space for graphitization treatment of a raw material filled in the saggar; a laser heating unit which is composed of a plurality of laser systems and irradiates a laser beam to heat the raw material in the saggar introduced into the first chamber to graphitize the raw material; and a first transfer conveyor which introduces the saggar filled with the raw material into the first chamber and discharges the saggar to the outside of the first chamber after the graphitization treatment is completed.

The invention relates to the technical field of semiconductor laser preparation, and discloses a novel handheld high-power light cone integrated semiconductor laser and a preparation method thereof.The laser comprises a first heat sink and a second heat sink which are stacked up and down, chips and electrodes are attached to the first heat sink and the second heat sink respectively, and a back-to-back series structure is formed through insulation gaskets and bent electrode plates; and the screws are matched with the insulating terminals to realize mechanical locking. The light cone integrated at the front end covers the light emitting area of the double chips, and rectangular or square light spots with uniform energy are output through total reflection light mixing. The preparation method comprises the following steps: preparing upper and lower semi-finished modules respectively; the inverted buckles are stacked and welded to form a series loop; carrying out mechanical locking and low-temperature insulation packaging; and integrating the optical cone. Power multiplication is achieved through space stacking, connection reliability is guaranteed through the step welding technology, and the LED lamp has the advantages of being small in size, good in heat dissipation, excellent in light spot quality and stable in structure.