28026results about "Increasing energy efficiency" patented technology

The invention provides an electromagnetic-assisted nickel-based alloy laser melting deposition crack inhibition method and system, relates to the technical field of automatic control, constructs an intelligent control system, carries out deep fusion and real-time prediction on multi-source heterogeneous sensing data, generates a prediction result, sets a reward function and an action-value network, and improves the performance of the nickel-based alloy laser melting deposition crack inhibition system. Solving to obtain an optimization control strategy and analyzing and outputting the optimization control strategy; and constructing a three-dimensional electromagnetic field distribution matrix. In combination with real-time feedback of the shape of the molten pool, the molten pool is stimulated to flow directionally and oscillate non-linearly according to the resonance effect, oscillation parameters are obtained, thermodynamic behaviors corresponding to the molten pool are predicted according to the oscillation parameters, and a thermodynamic prediction result is fed back to the central control unit; the method comprises the following steps: detecting the surface appearance of a part, extracting defect characteristic parameter vectors, inverting defect influence factors, generating a dynamic regulation and control curve, dispersing the dynamic regulation and control curve into multi-dimensional control instruction vectors, updating a preset regulation and control model, outputting optimized regulation and control model parameters, and carrying out crack suppression operation again.

The invention provides an electromagnetic field composite powder feeding type plasma arc additive manufacturing formability regulation and control method and system, and relates to the technical field of plasma arc additive manufacturing. The flowing direction and speed of liquid metal in a molten pool in the deposition process are regulated and controlled through the target composite electromagnetic field, and the morphology and the internal organization structure of a deposition layer are controlled; in the process of regulating and controlling the liquid metal in the molten pool, process parameters and molten pool dynamic image data in the deposition process are collected in real time, and a pre-trained state recognition model is used for conducting self-adaptive adjustment on the process parameters of a subsequent deposition layer; and after deposition of each layer is completed, a laser scanning system is adopted for measuring the actual geometric size and surface appearance of the deposition layer, deposition manufacturing of the next layer is executed based on the optimized composite electromagnetic field control parameters, the corrected layered slicing data and the process path, and the execution is executed circularly till manufacturing of the whole workpiece is completed.

The invention provides a heat input regulation and control method and system for electric arc additive continuous forming, and relates to the technical field of additive manufacturing, and the method comprises the following steps: collecting process parameters in real time, inputting pretreatment process data into a self-adaptive heat input quantity calculation model, and constructing and calculating to obtain a real-time heat input quantity based on a thermodynamic principle and a heat transfer theory; starting the multispectral imaging equipment, performing real-time temperature field scanning, recording temperature field scanning data, extracting temperature gradient and cooling rate information, performing correlation calculation with real-time heat input quantity, and determining an influence relation evaluation result; generating a heat input sequence according to the influence relation evaluation result; and inputting the heat input sequence into a self-adaptive control system constructed based on a reinforcement learning algorithm, calculating an optimal parameter scheme according to a preset target sedimentary layer performance index and a current temperature field state, adjusting corresponding spatial-temporal distribution of control energy input according to the optimal parameter scheme, and performing control heat input on different positions and different layers of the sedimentary layer.

The present invention discloses to a selective-laser-melting (SLM) printing defect detection and repair method and system based on a deep learning network and belongs to the technical field of additive manufacturing. The method includes: training a first neural network model through a defect dataset to obtain a defect recognition model; in a printing process of a part to be detected, performing online defect recognition through the defect recognition model; if a current layer has no defects, continuing to perform powder spreading and printing on a next layer; if a defect is recognized in the current layer, selecting whether to repair the defect according to a defect type; if defect repair is needed, after the current layer is printed, suspending powder spreading once, predicting laser remelting parameters by adopting a pre-trained second neural network model, and performing laser remelting repairing until the current layer has no defects; and repeating the processes of online defect recognition and laser remelting repair until the part to be detected is printed. In the present invention, the online defect recognition and repair are realized, and the real-time performance of the defect repair is improved.

The invention provides an additive manufacturing residual stress optimization method and system, and the method comprises the steps: searching a global optimal solution enabling the residual stress of an additive manufacturing part to be minimum from a technological parameter space through the combination of multi-physics field numerical simulation and an intelligent optimization algorithm; the multi-physics field numerical simulation comprises the steps of sampling from a process parameter space by using an optimization algorithm to obtain process parameters, inputting the sampled process parameters into a finite element model, performing thermal analysis on the process parameters based on the finite element model, and obtaining transient thermal distribution through thermal analysis. And performing structural analysis by using transient heat distribution to obtain residual stress under the current process parameters, and transmitting the obtained residual stress to an intelligent optimization algorithm for realizing process parameter optimization. The method has the advantages of high precision, low cost and the like, and high-precision collaborative optimization of multiple types of process parameters can be realized.

A component includes a body having a coupon opening defined therein, and an additively manufactured (AM) metal coupon including a dense region, a porous region adjacent the dense region, and a coupon outer surface. The porous region has a first cross-sectional area at a first location at or near the coupon outer surface and a second cross-sectional area less than the first cross-sectional area at a second location distal from the coupon outer surface. A braze material couples the metal coupon in the coupon opening and infiltrates into the porous region, e.g., based at least on a characteristic of the porosity thereof. The dense region may have a third cross-sectional area at the first location and a fourth cross-sectional area greater than the third cross-sectional area at the second location so it can direct the braze material in the porous region toward an inner surface of the coupon opening.

The invention discloses a metal 3D printing forming precision monitoring method and device and electronic equipment thereof, and relates to the technical field of metal 3D printing, and the method comprises the following steps: obtaining multi-modal sensor data, collecting multi-dimensional data in the metal 3D printing process based on the multi-modal sensor data, determining an optical sensor to record the molten pool form and powder distribution, and determining the metal 3D printing forming precision. The thermal infrared camera is determined to monitor temperature field distribution, the acoustic sensor is determined to collect and print medium-high frequency sound wave signals, and defect signals are identified; extracting boundary and geometric features from the optical image based on a convolutional neural network according to local preprocessing data of an edge computing device, and extracting a key temperature change area in response to thermal field gradient analysis; spectral features are extracted from the acoustic data based on time-frequency analysis. According to the invention, through synchronous acquisition of optical, thermal and acoustic multi-modal data, data fusion and defect detection are realized by using an advanced deep learning technology.

The invention relates to the technical field of path planning, and discloses a laser fuse additive manufacturing thermal management path planning closed-loop regulation and control system, which comprises a data acquisition module, a data processing module, a temperature distribution prediction module and a path planning regulation and control module, acquiring temperature distribution characteristic data and first characteristic data; the data processing module is used for preprocessing the temperature distribution feature data and the first feature data to obtain a regional feature sequence; the temperature distribution prediction module is used for constructing a temperature distribution prediction model according to the regional feature sequence; and the path planning regulation and control module is used for generating a regulation and control scheme in combination with the improved parrot optimization algorithm and the temperature distribution prediction model. Through combination of temperature prediction, path optimization, multi-dimensional feature extraction and an improved optimization algorithm, global optimization and dynamic regulation and control of the processing process are realized.

The invention relates to a laser arc wire powder simultaneous feeding coaxial deposition head, and belongs to the technical field of additive equipment, the laser arc wire powder simultaneous feeding coaxial deposition head comprises a plurality of coaxial powder feeding nozzles and a mounting seat, the plurality of coaxial powder feeding nozzles are jointly mounted on the mounting seat, the mounting seat is provided with a plurality of lens group modules, and the lens group modules are in one-to-one correspondence with the coaxial powder feeding nozzles; the lens group module is connected with a laser, a wire tube fixing part is mounted on the mounting seat, a wire guide tube is fixed in the wire tube fixing part, a wire feeding assembly is connected to the mounting seat, an electrifying tube is arranged on the wire feeding assembly, and the wire feeding assembly, the electrifying tube and the wire guide tube are jointly provided with an insulating assembly; an annular powder feeding channel is arranged in the coaxial powder feeding nozzle around the central axis of the coaxial powder feeding nozzle. The material adding equipment can carry out various material adding processes such as electric arc fuse wire material adding, laser fuse wire material adding, laser powder feeding material adding, laser electric arc composite wire feeding material adding and laser electric arc composite wire powder simultaneous feeding material adding, has the characteristics of light weight and high integration level, and has the effects of improving the deposition efficiency and reducing the energy consumption.

The invention discloses a rapid metal printing system and method based on machine vision feedback, and belongs to the technical field of 3D printing. The system comprises a data acquisition module used for determining the surface height difference, the temperature gradient and the density fluctuation of all preset areas in the first layer of the rapid metal printing object; the defect probability prediction module is used for obtaining the defect probability of each preset area in the first layer of the rapid metal printing object; the adjustment scheme determination module is used for determining a defect type and an adjustment scheme of a target preset area by taking the preset area corresponding to the defect probability exceeding a preset defect probability threshold value as the target preset area; and the printing adjustment module is used for performing printing adjustment on the first layer of the rapid metal printing object. According to the scheme, through accurate defect prediction, real-time adjustment and automatic control, the metal printing quality and efficiency can be improved, resource waste can be greatly reduced, the cost is reduced, and the flexibility and the intelligent level of the production process are enhanced.

The invention relates to a porous structure manufactured through laser powder bed melting additive manufacturing, in particular to a gradient porous structure with excellent mechanical property and functionality and an LPBF self-adaptive input manufacturing method of the gradient porous structure. According to the method, basic geometric parameters and gradient characteristics of the gradient porous structure are defined by utilizing Grasshopper parameterization design software. A gradient porous structure with excellent mechanical properties and functionality is generated through a grasshopper plug-in of software, and smooth transition from a solid state to a porous state is achieved. An LPBF technology is adopted and combined with an angle partitioning strategy, the gradient porous structure is melted layer by layer, the gradient porous structure is partitioned according to the strut suspension angle on the basis of optimizing process parameters, the optimized process parameters are applied to a model of the partitioned region, and the gradient porous structure is obtained. Scanning of each layer of the overhanging supporting columns at different angles is in appropriate laser parameter input, and the problems of deformation and high porosity caused by heat accumulation in the LPBF process are effectively solved.

A metal coupon (200) for repairing a component (202) includes an additively manufactured (AM) metal member (210) having at least two porous regions (300) and a braze material infiltration barrier (304) positioned between the at least two porous regions (300). The braze material infiltration barrier (304) has a lower porosity than the at least two porous regions (300). A component (202) using the metal coupon (200) may also include a braze material (310) coupling the metal coupon (200) in a coupon opening (204) in the body (206). The braze material (310) infiltrates at least one of the two porous regions (300), and the braze material infiltration barrier (304) separates the braze material (310) in the at least one of the two porous regions (300) from at least one other of the at least two porous regions (300). Different braze materials may be used in each porous region.

An additive manufactured (AM) metal coupon for a turbomachine component is provided. The component includes an airfoil body having a pressure side, a suction side, a trailing edge, and a coupon opening. The AM metal coupon has an AM metal member with at least one slanted coupon side wall at an angle of less than 90° with an exterior surface of the AM metal member. The AM metal member also has a first porous region having a first porosity and a second porous region having a second porosity different than the first porosity. A braze material couples the AM metal coupon in the coupon opening in the airfoil body and infiltrates into at least one of the first porous region based at least on a characteristic of the first porosity and the second porous region based at least on a characteristic of the second porosity.

A metal coupon includes an additively manufactured (AM) metal member having a porous region having between 2% to 50% open space volume to total volume. The metal coupon includes a first section of an anchor configured to interact with a second section of the anchor in a coupon opening of a body of a component. A component including the metal coupon may include the body including the coupon opening, and an anchor including a first section in or on one of the AM metal coupon and the body and a second section in or on the other of the AM metal coupon and the body. At least the first and second sections cooperatively hold the AM metal coupon in the coupon opening in the body. Braze material couples the coupon in the coupon opening in the body. The braze material infiltrates into the porous region.

A tool holder for a tool for machining a workpiece. The tool holder has a cutting insert receptacle for receiving a cutting insert, wherein the cutting insert receptacle has an upper clamping jaw for abutting an upper surface of the cutting insert and a lower clamping jaw for abutting a lower surface of the cutting insert opposite the upper surface. Further, the tool holder has an internal coolant channel extending inside the tool holder between a coolant inlet opening and a coolant outlet opening, wherein an end portion of the coolant channel extending inside the upper clamping jaw along a channel center axis opens into the coolant outlet opening. The coolant outlet opening is arranged at the upper clamping jaw and configured as an elongated opening. A width of the coolant outlet opening is smaller than a height of the coolant outlet opening measured orthogonally to the width of the coolant outlet opening. The end portion of the coolant channel is also elongated in a cross-section orthogonal to the channel center axis. A width of the end portion measured orthogonal to the channel center axis is smaller than a height of the end portion measured orthogonal to the channel center axis and orthogonal to the width of the end portion.

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing control method based on multi-material gradient transition, which comprises the steps of model processing, multi-material distribution, path planning, dynamic parameter control, online monitoring and feedback optimization. According to the method, through dynamic mixing of a nonlinear gradient function and multiple materials, limitation of traditional discrete material switching is broken through, continuous smooth transition of material attributes is achieved, printing parameters are dynamically adjusted, and the forming consistency of gradient materials under complex working conditions is remarkably improved; local strengthening is carried out according to the thermodynamic property difference of a multi-material interface, interface embrittlement caused by a traditional single process is avoided, the curing degree is detected in real time through a spectrum sensor, the problem that the curing degree of a traditional light curing process is uncontrollable is solved by combining partitioned UV light intensity adjustment and control, and precise gradient forming of a soft and hard alternate structure is achieved.

A metal coupon for repairing a component includes an additively manufactured (AM) metal member having a conduit in an interior of the AM metal member, and a first porous region around the conduit. The conduit is hollow. The porous metal coupon with conduit allows a braze material to be directed based on characteristics of the first porous region. A second porous region may be provided inside the conduit to increase heat rejection of the conduit.

The present disclosure relates to a method of using a metal specimen block having a porous region for a component. A method of coupling a metal sample block (200) to a component (202) may include additive manufacturing a metal sample block (200) having a first porous region (300A) having a first porosity and a second porous region (300B) having a second porosity different from the first porosity. A metal specimen block (200) is positioned in a specimen block opening (204) in a body (206) of the component (202). The metallic sample block (200) may be infiltrated with a braze material (310) to couple the metallic sample block (200) in a sample block opening (204) in the body (206). The one or more brazing materials (310) are infiltrated into at least one of the first porous region (300A) and the second porous region (300B) based at least on a characteristic of the first porosity and at least on a characteristic of the second porosity. The cured braze material (310) includes different segments having different physical properties based on different porosities and / or different braze materials.

A component includes a dense base region, a dense replacement region and an additively manufactured (AM) porous region between the dense base region and the dense replacement region. The porous region has a porosity between 2% to 50% open space volume to total volume of the AM porous region. The porous region can be printed onto the base region or the replacement region. A braze material couples the base region, the porous region and the replacement region together, and infiltrates into the porous region based at least on a characteristic of the porosity. The porous region reduces stress at a joint between the dense regions and can be customized to create different physical characteristic(s) than just those of the base and replacement regions.

A component (202) is disclosed that includes a body (206) and an additive manufactured (AM) metal mass (200) that includes a first section (292) and a stress relief section (294). The stress relief section (294) includes a porous region (300) having a porosity in which an open spatial volume accounts for 2% to 50% of the total volume of the stress relief section (294). The stress relief section (294) has a smaller at least one of thermal conductivity, tensile strength, ductility, and fatigue strength than the first section (292). A braze material (310) couples the AM metal specimen block (200) to a specimen block opening (204) in the body (206). The stress relief section (294) creates a low stress zone in the metal specimen block (200), which can be located near or adjacent to a high stress zone. The stress relief section (294) reduces residual stress in the metal sample block (200), which reduces related challenges to couple the metal sample block (200) to the body (206) of the component (202), particularly in the case of the use of superalloy materials.

A component includes a body and an additively manufactured (AM) metal coupon that includes at least one first porous region having a first porosity and may include any number of second porous regions having a second porosity different than the first porosity. A braze material couples the metal coupon in a coupon opening in the body. The braze material infiltrates into at least one of the first porous region based at least on a characteristic of the first porosity or any second porous region based at least on a characteristic of the second porosity. The different porosities can be customized to provide the first porous region and the second porous region with the braze material therein with different physical characteristic(s).

A metal coupon for repairing a component includes an additively manufactured (AM) metal member having a low porosity region in an interior of the AM metal member, and a porous region around the low porosity region. The low porosity region may have a porosity in a range of 0% to 5%, so is solid or nearly solid. The porous metal coupon with low porosity region allows braze material to be directed based on characteristics of the porous region.

Disclosed herein is an orthopedic implant device comprising a porous structure, approximating the shape of a bone, and having modulus of elasticity similar to that of said bone. In one embodiment, further disclosed herein is a method of treating injuries or diseases affecting bones or muscles comprising providing an orthopedic implant device, wherein the orthopedic implant device comprising a porous structure, approximating the shape of a bone, and having a modulus of elasticity similar to that of bone, and using the orthopedic implant device to treat injuries and diseases affecting bones and muscles in a mammal. In another embodiment, disclosed herein is a method of manufacturing an orthopedic implant device using an additive manufacturing (AM) method.

A metal coupon (200) for repairing a component (202) includes an additively manufactured (AM) metal member (330) having a sealed cavity (296) in an interior of the AM metal member (330), and a porous region (300) around the sealed cavity (296). A metal coupon system (210) may include at least two AM metal parts (292) with each AM metal part (292) including at least a section (294) of a sealed cavity (296) therein and a porous region (300) around the at least a section (294) of the sealed cavity (296). The AM metal parts (292) combine to form the metal coupon (200), i.e., AM metal member (330), with the sealed cavity (296) in an interior thereof and the porous region (300) around the sealed cavity (296). In any event, the sealed cavity (296) is hollow. The porous metal coupon (300) with sealed cavity (296) provides reduced mass and allows braze material (310) to be directed based on characteristics of the porous region (300).

The invention relates to a metal sample block with a porous area for a component and the component with the metal sample block. A component (202) includes a body (206) and an additive manufactured (AM) metal sample block (200) that includes at least one first porous region (300A) having a first porosity and can include any number of second porous regions (300B) having a second porosity different from the first porosity. A braze material (310) couples the metallic sample block (200) in a sample block opening (204) in the body (206). The braze material (310) is infiltrated into at least one of the first porous region (300A) and any second porous region (300B) based at least on a characteristic of the first porosity and at least on a characteristic of the second porosity. Different porosities can be tailored to provide different physical characteristics for the first porous region (300A) and the second porous region (300B) having the braze material (310) therein.

An additive manufactured (AM) metal coupon (200) for a turbomachine component (202) is provided. The component (202) includes an airfoil body (206) having a pressure side (152, 178), a suction side (154, 180), a trailing edge (158, 184), and a coupon opening (204). The AM metal coupon (200) has an AM metal member (290) with at least one slanted coupon side wall (292, 294) at an angle of less than 90° with an exterior surface (296) of the AM metal member (290). The AM metal member (290) also has a first porous region (300A) having a first porosity and a second porous region (300B) having a second porosity different than the first porosity. A braze material (310) couples the AM metal coupon (200) in the coupon opening (204) in the airfoil body (206) and infiltrates into at least one of the first porous region (300A) based at least on a characteristic of the first porosity and the second porous region (300B) based at least on a characteristic of the second porosity.

The invention relates to a porous metal sample block with a pipeline for repairing a component, the component with the porous metal sample block and a related method. A metal sample block (200) for repairing a component (202) includes an additive manufactured (AM) metal component (330) having a conduit (296) inside the AM metal component (330) and a first porous region (300) surrounding the conduit (296). The duct (296) is hollow. A porous metal sample block (200) with conduits (296) allows the brazing material (310) to be directed based on characteristics of the first porous region (300). The second porous region (350) can be disposed within the conduit (296) to increase heat dissipation of the conduit (296).

A component including a body, and an additively manufactured (AM) metal coupon including a first section and a stress-relief section, is disclosed. The stress-relief section includes a porous region having a porosity between 2% to 50% open space volume to total volume of the stress-relief section. The stress-relief section has at least one of thermal conductivity, tensile strength, ductility, or fatigue strength less than first section. A braze material couples the AM metal coupon to a coupon opening in the body. The stress-relief section creates a low-stress zone in the metal coupon that can be located near or adjacent to a high-stress zone. The stress-relief section reduces residual stress in the metal coupon, which reduces the related challenges of coupling the metal coupon to the body of the component, especially where superalloy materials are used.

The sand mold 3D printer relates to the technical field of casting molding, and comprises a box body, a workbench is arranged in the box body, a moving avoiding mechanism is arranged at the top of the box body, and cleaning and material collecting mechanisms used for cleaning a printing head are arranged on the front side and the rear side of the workbench correspondingly. The sanding device and the printing head respectively adopt two mutually independent and vertical driving parts as power, after the sanding device performs unidirectional sanding, the printing head performs continuous printing from front to back, after printing, the printing head moves to the position of the rear cleaning and receiving mechanism for avoiding, and then the sanding device performs reverse sanding, so that the printing efficiency is improved. The printing head conducts reverse continuous printing from back to front, two-way sanding and two-way printing are achieved, the sanding device and the printing head are free of idle stroke, the printing efficiency is high, when the printing head conducts avoiding, the pressure driving assembly drives the automatic cleaning assembly to scrape and clean glue liquid and gravel remaining at the bottom of the printing head, and therefore the printing efficiency is improved. And the bottom of the scraping plate is cleaned through the cleaning mechanism.

The invention provides a system for space heterostructure material additive manufacturing, and aims to solve the problems of heterogeneous powder pollution and recovery, space heterostructure deposition workpiece precision optimization, defect control and the like in the prior art. The system comprises a device shell, a heterogeneous powder feeding and recycling device, an additive rolling cooperation platform, an ultrasonic vibration clamping platform and a powder screening and collecting device. The heterogeneous powder feeding and recycling device controls a rotating round block and a tapping sliding block to move through a servo driving mechanism to achieve switching and recycling of heterogeneous powder and cleaning work of a powder feeding path. The material adding and rolling cooperation platform integrates a 3D material adding mechanism, a powder cleaning mechanism and a rolling mechanism, the angle of a nozzle is adjusted by driving a bevel gear transmission assembly, cleaning of residual powder on the deposition surface under different defocusing amounts is achieved, and the material adding and rolling cooperation platform cooperates with the rolling mechanism to flatten the deposition surface. The ultrasonic vibration clamping platform improves the deposition quality of the laser directed energy deposition (LDED) spatial heterostructure through precise clamping and ultrasonic vibration.