CN104923789A - Selective laser melting coupling impact wave equipment - Google Patents
Selective laser melting coupling impact wave equipment Download PDFInfo
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- CN104923789A CN104923789A CN201510389999.8A CN201510389999A CN104923789A CN 104923789 A CN104923789 A CN 104923789A CN 201510389999 A CN201510389999 A CN 201510389999A CN 104923789 A CN104923789 A CN 104923789A
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- selective laser
- forming system
- impact wave
- laser melting
- ultrasonic impact
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses selective laser melting coupling impact wave equipment. The equipment comprises a selective laser melting forming system, a computer control system and an ultrasonic impact wave transmitter; a three-dimensional moving worktable is installed in a sealed metal cabin of the selective laser melting forming system and located above a powder laying and feeding device of the selective laser melting forming system; the ultrasonic impact wave transmitter is installed on a beam of the three-dimensional moving worktable through a universal rotational joint; each time after one layer is machined by selective laser melting forming system, the surface of the layer is treated ultrasonically by the ultrasonic impact wave transmitter to eliminate residual stress, and the computer control system controls the selective laser melting forming system and the ultrasonic impact wave transmitter to work. The technical problem that a metal part deforms, warps and cannot be machined due to large residual stress in the SLM forming process can be solved, the tedious link of annealing aftertreatment on the metal part can be omitted, and the equipment is easy to operate, low in consumption and efficient.
Description
Technical field
The invention belongs to advanced Rapid Manufacturing Technology field, be specifically related to the building mortion of a kind of selective laser fusing coupled surge wave technology, this device is applicable to selective laser smelting technology form metal alloy, utilize controlled online shock wave to improve residual stress in form metal alloy, shaping high-performance is without the metal parts of residual stress.
Technical background
Selective laser fusing (Selective Laser Melting, SLM) as increasing one of material manufacture (3D printing) family important member, directly being melted the attritive powder formation of parts paved on preset powder bed by high energy beam optical-fiber laser, is a kind of new manufacture of successively piling up based on material.This technique can directly be shaped according to cad model the metallic article of almost complete fully dense any complexity.SLM be by successively optionally deposite metal powder bed and superposition come Prototyping Metal Parts, because SLM can the metal parts of direct manufacturing structure complexity, therefore the method can realize the free degree that designs to greatest extent, in the metal alloy part that preparation has good characteristic accurately, have great potential.
But in selective laser fusing manufacture process, because optical-fiber laser energy density is high, the cooling velocity in micro-molten bath of dusty material reaches 10
3-10
5k/s, this high cooldown rate directly causes there is larger residual stress in metal parts.Current residual stress is the one of the main reasons that restriction SLM Prototyping Metal Parts moves towards widespread adoption.The residual stress of metal parts mainly contains two sources: the residual stress caused by Volume Changes that more than the Can that uneven plastic deformation produces, Ying Li ﹔ is uneven.The former is mainly in nonequilibrium solidification process, and metallic atom has little time ordered arrangement, produces a large amount of room and distortion, thus causes the metal parts be shaped form microstrain and cause residual stress.The contraction that the latter's residual stress mainly produces due to the metal after solidifying under cooling fast and cause residual stress.The method of current elimination SLM Prototyping Metal Parts residual stress mainly adopts the process of shaping after annealing, although this method is better for elimination residual stress effect, there is considerable influence to the three-dimensional dimension of formation of parts.Therefore, find one and can reduce residual stress and convenient, the method that also material property can not be made to reduce will be very meaningful.
Summary of the invention
The invention provides a kind of selective laser fusing coupled surge wave device, object is shaping preparation SLM Quick-forming labyrinth and the metal parts existed compared with low residual stress, and SLM can be avoided to be out of shape due to larger residual stress in Prototyping Metal Parts process, warpage, the technical problem such as cannot to process, also numerous and diverse link of metal parts annealing post processing can be saved, simple, low-consumption high-efficiency.
A kind of selective laser fusing coupled surge wave device provided by the invention, comprise selective laser melt-forming system and computer control system, it is characterized in that, this equipment also comprises ultrasonic impact wave launcher, three-dimensional travelling table is arranged in the metal sealing cabin of selective laser melt-forming system, and above the paving dust feeder being positioned at selective laser melt-forming system, ultrasonic impact wave launcher is arranged on the crossbeam of three-dimensional travelling table by universal rotational joint, when laser carries out processing scanning cross-section profile, ultrasonic transmitter moves to equipment distalmost end, ensure not cause interference to laser scanning,
Described selective laser melt-forming system often processes one deck, and described ultrasonic transmitter then carries out ultrasonic wave process to this layer of surface, to eliminate residual stress;
Computer control system is connected with selective laser melt-forming system and the ultrasonic impact wave launcher signal of telecommunication, for controlling both work.
Ultrasonic impact wave technology melts with kind selective laser and is coupled by present device, utilize high-power ultrasonics to promote percussion tool and impact metal object surface with the frequency of more than 20,000 times per second, due to hyperacoustic high frequency, efficient and focus on lower macro-energy, make the compressive plastic deformation that metal surface generation is larger; Supersonic shock wave changes original stress field simultaneously, produces the compression of certain numerical value; And make to be strengthened by impact site.Present device can realize SLM and prepare in metal parts process, and supersonic shock wave is synchronously removed or improved the coupling operational mechanism of residual stress.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of selective laser fusing coupled surge wave device provided by the invention;
Respectively indicate in figure, 1 computer, 2 line systems; 3 feedback control systems, 4 polariscopes, 5 laser instruments; 6 protection windows, 7 metal sealing cabins, 8 three-dimensional travelling tables; 9 paving dust feeders, 10 brace tables, 11 lifting platforms; 12 total brace tables, 13 motors, 14 pending workpiece; 15 protection gas EGRs, 16 universal rotational joint 17 ultrasonic impact wave producers.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.It should be noted that at this, the explanation for these embodiments understands the present invention for helping, but does not form limitation of the invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, a kind of selective laser fusing coupled surge wave device that this example provides, comprises selective laser melt-forming system, ultrasonic impact wave launcher and computer control system.
Selective laser melt-forming system is fixed on total brace table 12; be made up of polariscope 4, laser instrument 5, protection window 6, metal sealing cabin 7, paving dust feeder 9, brace table 10, Lifting platform 11, motor 13, basically identical with existing selective laser melting unit.
Three-dimensional travelling table 8 is arranged in metal sealing cabin 7, and be positioned at above paving dust feeder 9, ultrasonic impact wave launcher 17 is arranged on the crossbeam of three-dimensional travelling table 8 by universal rotational joint 16, when laser carries out processing scanning cross-section profile, ultrasonic transmitter 17 moves to equipment distalmost end, ensures not cause interference to laser scanning.
Computer control system 1, for controlling both co-ordinations, as the section of control three-dimensional part model, laser beam scan path generation, polariscope control, table top lifting, spreads powder feed system work etc.
During processing work 14; protection gas EGR 15 first starts; in metal sealing cabin 7, pass into protective gas and start circulation; paving dust feeder 9 is first at the powder that Lifting platform 11 surface uniform layer overlay is very thin; laser beam launched by laser instrument 11, and computer control system 1 controls polariscope 4 pairs of laser and controls, and has the place scanning fusing of physical profiles at workpiece; then motor 13 drives Lifting platform 11 to decline the height of a thickness, repetitive cycling like this.
Certain height often processed by workpiece 14, and ultrasonic impact wave launcher 17 is started working.Concrete working method is: computer control system 1 is according to the concrete pattern of the current machined surface of workpiece, control step driven by motor XYZ tri-axle travelling carriage 8 and universal rotational joint 16, ultrasonic impact wave launcher 17 is made to contact workpiece 14 surface, ultrasonic wave process is carried out to workpiece, eliminates residual stress.XYZ tri-axle travelling carriage 8 can carry ultrasonic impact wave launcher 17 to carry out all around, moves up and down.Universal rotational joint 16 ensures ultrasonic transmitter all the time perpendicular to surface of the work.When equipment carries out ultrasonic wave process, laser instrument 5, paving dust feeder 9 and Lifting platform 11 quit work, and prevent from interfering collision with XYZ tri-axle travelling carriage.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the content disclosed in this embodiment and accompanying drawing.The equivalence completed under not departing from spirit disclosed in this invention so every or amendment, all fall into the scope of protection of the invention.
Claims (1)
1. a selective laser fusing coupled surge wave device, comprise selective laser melt-forming system and computer control system, it is characterized in that, this equipment also comprises ultrasonic impact wave launcher, three-dimensional travelling table is arranged in the metal sealing cabin of selective laser melt-forming system, and above the paving dust feeder being positioned at selective laser melt-forming system, ultrasonic impact wave launcher is arranged on the crossbeam of three-dimensional travelling table by universal rotational joint, when laser carries out processing scanning cross-section profile, ultrasonic transmitter moves to equipment distalmost end, ensure not cause interference to laser scanning,
Described selective laser melt-forming system often processes one deck, and described ultrasonic transmitter then carries out ultrasonic wave process to this layer of surface, to eliminate residual stress;
Computer control system is connected with selective laser melt-forming system and the ultrasonic impact wave launcher signal of telecommunication, for controlling both work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510389999.8A CN104923789A (en) | 2015-07-06 | 2015-07-06 | Selective laser melting coupling impact wave equipment |
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| CN201510389999.8A CN104923789A (en) | 2015-07-06 | 2015-07-06 | Selective laser melting coupling impact wave equipment |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750546A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Selective-laser-melting two-dimensional ultrasonic vibration introducing device |
| CN106141439A (en) * | 2016-08-13 | 2016-11-23 | 中北大学 | Eliminate the laser-impact device of laser fusion molded article residual stress |
| CN106735221A (en) * | 2017-02-24 | 2017-05-31 | 广东工业大学 | A kind of laser-impact forges metal 3D printing composite manufacturing method and device |
| CN106735200A (en) * | 2016-11-30 | 2017-05-31 | 沈阳航空航天大学 | A kind of laser gain material manufacture vibrates hammering device and application method with assisting ultrasonic |
| CN106825574A (en) * | 2017-04-18 | 2017-06-13 | 广东工业大学 | A kind of metal gradient material laser impact forges compound increasing material manufacturing method and device |
| CN107127339A (en) * | 2016-07-23 | 2017-09-05 | 大连美光速造科技有限公司 | A kind of metal 3D printing parts process of eliminating stress based on ultrasonic vibration |
| CN107186214A (en) * | 2017-04-25 | 2017-09-22 | 江苏大学 | A kind of laser heating power successively interacts the combination unit of increasing material manufacturing |
| CN108602122A (en) * | 2015-12-11 | 2018-09-28 | 香港科技大学 | The method that increased component is controlled by ultrasonic excitation and active temperature for increasing material manufacturing |
| TWI637839B (en) * | 2016-03-22 | 2018-10-11 | 國立中興大學 | Laminated manufacturing method and processing machine thereof |
| CN108677001A (en) * | 2018-06-21 | 2018-10-19 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of automatic executing agency suitable for residual stress cancellation element |
| CN109702127A (en) * | 2017-10-26 | 2019-05-03 | 通用电气公司 | The combined shaping system and method that increasing material manufacturing is combined with forging |
| EP3685995A1 (en) * | 2019-01-16 | 2020-07-29 | United Technologies Corporation | Ultrasonic assisted additive manufacturing apparatus and method |
| CN111761225A (en) * | 2019-12-24 | 2020-10-13 | 哈尔滨工业大学（威海） | All-position equal-strength aqueous medium ultrasonic auxiliary arc-laser additive device |
| WO2021004431A1 (en) * | 2019-07-06 | 2021-01-14 | 陕西斯瑞新材料股份有限公司 | Technical method for printing similar structure of combustion chamber liner by using grcop-84 spherical powder |
| CN113102779A (en) * | 2021-04-06 | 2021-07-13 | 哈尔滨工业大学 | Ultrasonic-assisted laser melting deposition forming synchronous loading device |
| CN113649597A (en) * | 2021-08-30 | 2021-11-16 | 湖南华曙高科技有限责任公司 | Additive manufacturing method and additive manufacturing equipment |
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| CN104525944A (en) * | 2014-12-23 | 2015-04-22 | 北京理工大学 | High-energy beam-ultrasonic composite additive manufacturing method for metal materials |
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| WO1995030503A1 (en) * | 1994-05-06 | 1995-11-16 | Dtm Corporation | Binder compositions for selective laser sintering processes |
| CN103305828A (en) * | 2013-06-03 | 2013-09-18 | 南京航空航天大学 | Device for strengthening laser cladding layer by ultrasonic impact and method thereof |
| CN103521772A (en) * | 2013-10-17 | 2014-01-22 | 浙江衢州永丰金属制品有限公司 | Powder metallurgy method and forming die for producing upper combining part |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108602122A (en) * | 2015-12-11 | 2018-09-28 | 香港科技大学 | The method that increased component is controlled by ultrasonic excitation and active temperature for increasing material manufacturing |
| TWI637839B (en) * | 2016-03-22 | 2018-10-11 | 國立中興大學 | Laminated manufacturing method and processing machine thereof |
| CN105750546B (en) * | 2016-04-29 | 2017-07-14 | 西安交通大学 | A kind of selective laser fusing two-dimensional ultrasound adds vibrating device |
| CN105750546A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Selective-laser-melting two-dimensional ultrasonic vibration introducing device |
| CN107127339A (en) * | 2016-07-23 | 2017-09-05 | 大连美光速造科技有限公司 | A kind of metal 3D printing parts process of eliminating stress based on ultrasonic vibration |
| CN106141439B (en) * | 2016-08-13 | 2017-12-08 | 中北大学 | Eliminate the laser-impact device of laser fusion molded article residual stress |
| CN106141439A (en) * | 2016-08-13 | 2016-11-23 | 中北大学 | Eliminate the laser-impact device of laser fusion molded article residual stress |
| CN106735200A (en) * | 2016-11-30 | 2017-05-31 | 沈阳航空航天大学 | A kind of laser gain material manufacture vibrates hammering device and application method with assisting ultrasonic |
| CN106735200B (en) * | 2016-11-30 | 2018-11-23 | 沈阳航空航天大学 | A kind of laser gain material manufacture assisting ultrasonic vibration hammering device and application method |
| CN106735221A (en) * | 2017-02-24 | 2017-05-31 | 广东工业大学 | A kind of laser-impact forges metal 3D printing composite manufacturing method and device |
| CN106825574A (en) * | 2017-04-18 | 2017-06-13 | 广东工业大学 | A kind of metal gradient material laser impact forges compound increasing material manufacturing method and device |
| CN106825574B (en) * | 2017-04-18 | 2020-02-07 | 广东工业大学 | Laser impact forging composite additive manufacturing method and device for metal gradient material |
| CN107186214A (en) * | 2017-04-25 | 2017-09-22 | 江苏大学 | A kind of laser heating power successively interacts the combination unit of increasing material manufacturing |
| US10792766B2 (en) | 2017-04-25 | 2020-10-06 | Jiangsu University | Combined apparatus for layer-by-layer interactive additive manufacturing with laser thermal/mechanical effects |
| CN107186214B (en) * | 2017-04-25 | 2018-06-26 | 江苏大学 | A kind of laser heating power successively interacts the method and combination unit of increasing material manufacturing |
| WO2018196106A1 (en) * | 2017-04-25 | 2018-11-01 | 江苏大学 | Combining device for laser heating power layer-by-layer interaction additive manufacturing |
| CN109702127A (en) * | 2017-10-26 | 2019-05-03 | 通用电气公司 | The combined shaping system and method that increasing material manufacturing is combined with forging |
| US11945047B2 (en) | 2017-10-26 | 2024-04-02 | General Electric Company | Composite forming system combining additive manufacturing and forging and methods for same |
| CN108677001A (en) * | 2018-06-21 | 2018-10-19 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of automatic executing agency suitable for residual stress cancellation element |
| CN108677001B (en) * | 2018-06-21 | 2020-02-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Automatic actuating mechanism suitable for residual stress relieving device |
| EP3685995A1 (en) * | 2019-01-16 | 2020-07-29 | United Technologies Corporation | Ultrasonic assisted additive manufacturing apparatus and method |
| WO2021004431A1 (en) * | 2019-07-06 | 2021-01-14 | 陕西斯瑞新材料股份有限公司 | Technical method for printing similar structure of combustion chamber liner by using grcop-84 spherical powder |
| CN111761225A (en) * | 2019-12-24 | 2020-10-13 | 哈尔滨工业大学（威海） | All-position equal-strength aqueous medium ultrasonic auxiliary arc-laser additive device |
| CN113102779A (en) * | 2021-04-06 | 2021-07-13 | 哈尔滨工业大学 | Ultrasonic-assisted laser melting deposition forming synchronous loading device |
| CN113649597A (en) * | 2021-08-30 | 2021-11-16 | 湖南华曙高科技有限责任公司 | Additive manufacturing method and additive manufacturing equipment |
| CN113649597B (en) * | 2021-08-30 | 2022-12-06 | 湖南华曙高科技股份有限公司 | Additive manufacturing method and additive manufacturing equipment |
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Application publication date: 20150923 |