CN102274968A - Device for manufacturing nonlinear tree-shaped liquid suction core by selected region laser melting - Google Patents
Device for manufacturing nonlinear tree-shaped liquid suction core by selected region laser melting Download PDFInfo
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- CN102274968A CN102274968A CN2011102411156A CN201110241115A CN102274968A CN 102274968 A CN102274968 A CN 102274968A CN 2011102411156 A CN2011102411156 A CN 2011102411156A CN 201110241115 A CN201110241115 A CN 201110241115A CN 102274968 A CN102274968 A CN 102274968A
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- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims description 21
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- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
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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
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Abstract
本发明公开了一种选区激光熔化制备非线性树状吸液芯装置，包括控制器、激光发生器、光路传输原件、扫描振镜系统、F-θ镜、成型室、进气口、出气口、成型件升降缸、粉末升降缸、粉末回收缸；本发明可以快速地制备任意管径比、分叉角的“树状结构”吸液芯，既可以用于科研，同时也满足了高效率热管的尖端领域的需求；本发明还提供了利用了分光系统和双扫描振镜系统，一次可以制造两个不同结构的吸液芯的方案，在保证质量的同时，提高了效率；这对于现有的关于吸液芯的实验研究和高质量吸液芯结构的制备有重大的意义；本发明结构简单，操作方便快捷，生产成本低，具有积极地推广应用价值。
The invention discloses a non-linear tree-shaped liquid-absorbing core device prepared by selective laser melting. , molded parts lift cylinder, powder lift cylinder, powder recovery cylinder; the invention can quickly prepare "tree-like structure" liquid-absorbing cores with any pipe diameter ratio and bifurcation angle, which can be used for scientific research and meet high efficiency The needs of the cutting-edge field of heat pipes; the present invention also provides a solution that utilizes a spectroscopic system and a double-scanning galvanometer system to manufacture two liquid-absorbing cores with different structures at a time, which improves efficiency while ensuring quality; Some experimental studies on liquid-absorbing cores and the preparation of high-quality liquid-absorbing core structures are of great significance; the invention has simple structure, convenient and quick operation, low production cost, and has positive promotion and application value.
Description
Technical field
The invention belongs to electronics process industry technical field, particularly relate to a kind of precinct laser fusion and prepare non-linear tree-shaped imbibition core apparatus.
Background technology
The heat flow density that requires along with dissipation from electronic devices constantly increases, heat pipe has the good characteristics such as adaptability of high thermal conductivity, good isothermal, heat flow density changeability, thermostatic characteristics environment, can satisfy electronic and electrical equipment to heat abstractor compactness, reliable, control flexibly, high cooling efficiency, requirement such as do not need repairing.Therefore, hot pipe technique has become the one preferred technique of electrical equipment heat radiation, electronic device cooling, semiconductor element and the heat radiation of large scale integrated circuit plate.
The imbibition core is the most crucial part of heat pipe, and it strengthens the phase-change heat transfer process thereby also can increase evaporation and condensation area, the even distribution that also helps keep an evaporating temperature simultaneously except capillary force is provided.In case after the physical size of micro heat pipe, shell and imbibing core material material type, working medium fluid were determined, its heat transfer property just was decided by the performance of imbibition core.According to imbibition core channel characteristics it is divided three classes: simple evenly type, non-homogeneously obtain compound and three kinds on somewhat complex design type.Divide liquid sucting core structure that plough groove type, screen type, sintered type etc. are arranged from process.
Plough groove type liquid sucting core structure developing direction is further to improve the groove depth-to-width ratio and optimize geometry.Discover that under the same test condition, the coarse groove face plough groove type of thin-walled high-aspect-ratio micro heat pipe can improve more than 55% than existing smooth groove face plough groove type micro heat pipe heat transfer property.Plough groove type imbibition core is made with cutting process, can produce ess-strain to metal material, reduce fatigue life, the shape that cutting process only is suitable for making on the machined surface surface and finite depth is interior, and consider that feed groove and escape will be arranged, be more suitable for processing the graphic structure of linear rule,, can't make nonlinear multiple dimensioned liquid sucting core structure so the structural complexity of plough groove type imbibition core is subjected to very big restriction.For the high-grade, precision and advanced field that high requirement is arranged for some opposite heat tube performances now, plough groove type imbibition core reduces the backflow resistance when can not always provide enough capillary forces.
The imbibition core of sintering structure is actual to be a kind of porous material, Taiwan Qi Hong Science and Technology Ltd. (AVC) is explored different grain size copper powder gradient sintering capillary wick, found that, many granularities copper powder gradient sintering can increase the contact strength of copper powder and wall, reduce thermal resistance, the more important thing is the contradiction that liquid backflow resistance increased when can solve capillary attraction improved.Though and the special molding mode of sintered type has the advantage of low cost, high yield, can't be on microcosmic control structure and shape, with the prior art means, still be difficult to increase substantially the scientific structure of imbibition core and then increase work efficiency.
The target of wick structure design is the raising capillary attraction, reduce to reflux resistance and raising thermal conductivity factor, and this requires to increase the size of liquid reflux channel when reducing imbibition core pore radius.Though the researcher has done many effort in design of plough groove type and sintered type imbibition core and manufacture view, reduce simultaneously to reflux and do not obtain desirable achievement yet aspect this contradiction of resistance solving the raising capillary attraction.Its reason is: improve solid-liquid, solid vapour interfacial structure to strengthen the demand of the boiling (evaporator section) and (condensation segment) ability of condensing, and improve capillary attraction, the demand of the resistance that reduces to reflux, make surface micro-structure, microchannel size and the porosity of desirable heat exchanger core in the radial and axial nonlinear change that is, so machining and sintering method are difficult to finish.
But experimental study shows that the heat-transfer capability of three kinds of traditional liquid sucting core structures that processing method produced is all far below " tree-shaped " liquid sucting core structure.And because the complexity and the scrambling of " tree ", traditional processing method can't directly prepare, and makes that the ability to work raising of liquid sucting core structure is very slow, becomes the factor of restriction heat dissipation technology development.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of prior art, provide a kind of precinct laser fusion to prepare non-linear tree-shaped imbibition core apparatus, can prepare " tree " imbibition core of any caliber ratio, angle of forking fast.
The present invention is achieved through the following technical solutions:
A kind of precinct laser fusion prepares non-linear tree-shaped imbibition core apparatus, comprises controller, laser generator, optic path original paper, scanning galvanometer system, F-θ mirror, forming room, air inlet, gas outlet, profiled member lift cylinders, powder lift cylinders, Powder Recovery cylinder;
Described laser generator, optic path original paper, scanning galvanometer system, F-θ mirror light path successively are provided with connection;
Described F-θ mirror is arranged at the upper center of forming room, and described air inlet is arranged at the inwall upper end of forming room's one side, and described gas outlet is arranged at the madial wall lower end of forming room's opposite side, also is provided with numerical control in the described forming room and moves the brush sheet;
Described profiled member lift cylinders is arranged at the lower end of forming room, and the powder lift cylinders is arranged at a side of profiled member lift cylinders, and the Powder Recovery cylinder is arranged at the opposite side of powder lift cylinders;
Described optic path original paper comprises optical fiber transmission line and is installed in collimator and extender mirror on the optical fiber transmission line successively; Described optic path original paper is made of optoisolator and optical fiber coupling head.
Described scanning galvanometer system, laser generator, numerical control are moved brush sheet, powder lift cylinders, Powder Recovery cylinder and are connected with controller respectively.Described controller is a computer.
This device comprises that also the spectroscopy system is made up of total reflective mirror and half anti-mirror, described scanning galvanometer system are two scanning galvanometer systems, and described spectroscopy system is arranged in the light path between laser generator and pair scanning galvanometer system.
Said apparatus specifically comprises the steps: the selective laser melting (SLM) molding process of imbibition core
(1) set up the CAD geometrical model of imbibition core, and it is discrete to carry out layering, generates scanning path data, described scanning path data is imported in the controller 1.
(2) in order to guarantee that in the course of work, material is not oxidized, by air inlet 8 inert gas injecting in forming room 7, within limits with the oxygen concentration in the control forming room 7.
(3) profiled member lift cylinders 11 decline one decks, powder lift cylinders 12 risings one segment distance guarantees to overflow enough amount of powder, and numerical control is moved brush sheet 10 powder that overflows in the powder cylinder 12 is pushed in the moulding cylinder 11, and unnecessary is pushed in the Powder Recovery cylinder 13.
(4) laser scanning Cu powder, focus on through F-θ mirror 6, on the processing plane that is positioned over metal dust on the profiled member lift cylinders 11, form focal beam spot, the Cu powder is melted, form part individual layer cross section, when adopting spectroscopy system, can prepare the imbibition core of two different structures simultaneously, scanning pattern is respectively by two galvanometer scanning system 17 controls.
(5) controller 1 is judged according to the number of plies of scanning and is judged the whether moulding of imbibition core, if molded, then takes out profiled member, otherwise repeating step (3), (4) successively melt the Cu powder, until piling up moulding, the liquid sucting core structure of acquisition moulding.
Existing main flow process technology means can't be made the non-linear multiple dimensioned imbibition core of tree.And adopt the utility model device, can produce the imbibition core of tree fast.Can make the imbibition core reach rational structure, have minimum backflow resistance when making it to have maximum capillary force.
Apparatus of the present invention can prepare any caliber " tree " imbibition core than, angle of forking apace, both can be used for scientific research, have also satisfied the demand of the leading-edge field of high efficiency heat pipe simultaneously.This patent also provides and has utilized beam splitting system and two scanning galvanometer system, once can make the scheme of the imbibition core of two different structures, when ensuring the quality of products, has improved efficient.This has significant meaning for existing about the experimental study of imbibition core and the preparation of high-quality liquid sucting core structure.
The present invention is simple in structure, and is convenient to operation, and production cost is low, has application value energetically.
Description of drawings
Fig. 1 prepares the structural representation of non-linear tree-shaped imbibition core apparatus for precinct laser fusion of the present invention.
Fig. 2 prepares another structural representation of non-linear tree-shaped imbibition core apparatus for precinct laser fusion of the present invention.
Fig. 3 is tree-shaped liquid sucting core structure schematic diagram.
Among the last figure: controller 1; Laser generator 2; Optic path original paper 3; Scanning galvanometer system 4; Processing plane 5; F-θ mirror 6; Forming room 7; Air inlet 8; Gas outlet 9; Brush sheet 10 is moved in numerical control; Profiled member lift cylinders 11; Powder lift cylinders 12; Powder Recovery cylinder 13; Transparent dust cover 14; Half anti-mirror 15; Total reflective mirror 16; Two scanning galvanometer system 17.
The specific embodiment
Below the specific embodiment of the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Prepare non-linear tree-shaped imbibition core apparatus as Fig. 1, precinct laser fusion of the present invention, comprise that controller 1, laser generator 2, optic path original paper 3, scanning galvanometer system 4, F-θ mirror 6, forming room 7, air inlet 8, gas outlet 9, numerical control move brush sheet 10, profiled member lift cylinders 11, powder lift cylinders 12, Powder Recovery cylinder 13; Described laser generator 2, optic path original paper 3, scanning galvanometer system 4, F-θ mirror 6 light path successively are provided with connection;
Described F-θ mirror 6 is arranged at the upper center of forming room 7, and described air inlet 8 is arranged at the inwall upper end of forming room's 7 one sides, and described gas outlet 9 is arranged at the inwall lower end of forming room's 7 opposite sides, also is provided with numerical control in the described forming room 7 and moves brush sheet 10;
Described profiled member lift cylinders 11 is arranged at the lower end of forming room 7, and powder lift cylinders 12 is arranged at a side of profiled member lift cylinders 11, and Powder Recovery cylinder 13 is arranged at the opposite side of powder lift cylinders 12;
Described scanning galvanometer system 4, laser generator 2, numerical control are moved brush sheet 10, profiled member lift cylinders 11, powder lift cylinders 12 and are connected with controller 1 respectively.Described controller 1 is a computer.
This device comprises that also the spectroscopy system is made up of total reflective mirror 16 and half anti-mirror 15, described scanning galvanometer system 4 are two scanning galvanometer systems 17, and described spectroscopy system is arranged in the light path between laser generator 2 and pair scanning galvanometer system 17.
Between forming room 7 and F-θ mirror 6, transparent dust cover 14 is set.
Move brush sheet 10 by controller 1 control laser generator 2, scanning galvanometer system 4, profiled member lift cylinders 11, Powder Recovery cylinder 13 and numerical control, be connected to the laser generator 2 of controller and the control card of scanning galvanometer system 4 by USB interface.The laser generator 2 preferential optical-fiber laser generators of selecting power 50 to 400W, beam quality is less than 1.1, and optical fiber laser power can satisfy the requirement of focal beam spot.Optic path original paper 3 comprises optical fiber transmission line and is installed in collimator and extender mirror (not shown) on the optical fiber transmission line successively, optic path original paper 3 adopts optoisolator and optical fiber coupling head (not shown)s, is provided with water-cooled mechanism outer the putting of optical fiber transmission line.Scanning galvanometer system 4 is provided with air-cooled mechanism, and 9 places, gas outlet of forming room 7 are provided with the oxygen content detector.The Cu powder is carried out the ball milling of certain hour, make particle size, avoid the too small dust that forms, reduce the particles fuse energy simultaneously, can scan, thereby improve workpiece surface quality with faster speed roughly at 500-1000nm.Because particle is less, for preventing that moving brush sheet 10 in numerical control pushes away dust in the powder process and kick up and cover F-θ mirror 6 surfaces, thereby the transmittance that reduces F-θ mirror 6 influences work laser quality, because F-θ mirror 6 surface accurates, be not suitable for cleaning, the spy adds the transparent dust cover 14 of convenient regularly dismounting cleaning.
As Fig. 2, for increasing work efficiency, increased the spectroscopy system of utilizing total reflective mirror 16 half anti-mirrors 15 to form, the light beam that laser generator 2 is produced is divided into two schemes of restrainting, two bundle laser energies still satisfy job requirement, through two scanning galvanometer system 17, can carry out the scanning of two figures simultaneously, but time processing goes out two different liquid sucting core structures respectively by controller 1 control.
Said apparatus can be realized as follows to the selective laser melting (SLM) molding process of imbibition core:
(1) set up the CAD geometrical model of imbibition core, and it is discrete to carry out layering, generates scanning path data, described scanning path data is imported in the controller 1.
(2) in order to guarantee that in the course of work, material is not oxidized, by air inlet 8 inert gas injecting in forming room 7, within limits with the oxygen concentration in the control forming room 7.
(3) profiled member lift cylinders 11 decline one decks, powder lift cylinders 12 risings one segment distance guarantees to overflow enough amount of powder, and numerical control is moved brush sheet 10 powder that overflows in the powder cylinder 12 is pushed in the moulding cylinder 11, and unnecessary is pushed in the Powder Recovery cylinder 13.
(4) laser scanning Cu powder, focus on through F-θ mirror 6, on the processing plane that is positioned over metal dust on the profiled member lift cylinders 11, form focal beam spot, the Cu powder is melted, form part individual layer cross section, when adopting spectroscopy system, can prepare the imbibition core of two different structures simultaneously, scanning pattern is respectively by two galvanometer scanning system 17 controls.
(5) controller 1 is judged according to the number of plies of scanning and is judged the whether moulding of imbibition core, if molded, then takes out profiled member, otherwise repeating step (3), (4) successively melt the Cu powder, until piling up moulding, the liquid sucting core structure of acquisition moulding.
As shown in Figure 3, the non-linear tree-shaped liquid sucting core structure parameter of this patent moulding has following characteristics: caliber is than about 1.3, about 55 ° of angles of forking.But the liquid sucting core structure size of this method moulding is not limited to above-mentioned parameter.
Just can realize the present invention preferably as mentioned above.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
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| CN2011102411156A CN102274968A (en) | 2011-08-22 | 2011-08-22 | Device for manufacturing nonlinear tree-shaped liquid suction core by selected region laser melting |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699531A (en) * | 2012-05-28 | 2012-10-03 | 华南理工大学 | Welding method for melting metal powder by laser scanning and device thereof |
| CN103056365A (en) * | 2011-10-21 | 2013-04-24 | 普拉特及惠特尼火箭达因公司 | Additive manufacturing management of large part build mass |
| CN103071795A (en) * | 2013-01-23 | 2013-05-01 | 西安铂力特激光成形技术有限公司 | Mobile galvanometer selective laser melting (SLM) forming device |
| CN103949638A (en) * | 2014-05-09 | 2014-07-30 | 张百成 | Light-split single-light source double-scanning electron microscope type selective laser melting molding device |
| CN104010749A (en) * | 2011-12-23 | 2014-08-27 | 米其林集团总公司 | Method and device for producing three-dimensional objects |
| CN104190931A (en) * | 2014-09-09 | 2014-12-10 | 华中科技大学 | Method and device for manufacturing efficient and high-precision composite additive |
| CN104425123A (en) * | 2013-09-05 | 2015-03-18 | 爱科科技有限公司 | Sintering molding device and method for selective laser of rare earth permanent magnet device |
| CN106914619A (en) * | 2017-05-10 | 2017-07-04 | 窦鹤鸿 | Mobile assembling 3D printing equipment, 3D printing main body equipment and 3D printer |
| DE102017200825A1 (en) | 2017-01-19 | 2018-07-19 | Siemens Aktiengesellschaft | Plant and method for the additive production of at least one component |
| CN110614766A (en) * | 2019-09-23 | 2019-12-27 | 华中科技大学 | Multi-beam additive manufacturing equipment and method |
| CN110940215A (en) * | 2019-11-14 | 2020-03-31 | 上海卫星装备研究所 | Structure and manufacturing method of variable cross-section heat pipe |
| CN112705707A (en) * | 2019-10-25 | 2021-04-27 | 灿美工程股份有限公司 | Dual scanner three-dimensional printer using selective laser sintering |
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Cited By (17)
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| CN103056365A (en) * | 2011-10-21 | 2013-04-24 | 普拉特及惠特尼火箭达因公司 | Additive manufacturing management of large part build mass |
| CN103056365B (en) * | 2011-10-21 | 2016-01-13 | 联合工艺公司 | The interpolation manufacturing management of body built by large part |
| CN104010749A (en) * | 2011-12-23 | 2014-08-27 | 米其林集团总公司 | Method and device for producing three-dimensional objects |
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| CN104190931B (en) * | 2014-09-09 | 2016-10-05 | 华中科技大学 | A kind of high-efficiency high-accuracy composite wood manufacture method and device |
| DE102017200825A1 (en) | 2017-01-19 | 2018-07-19 | Siemens Aktiengesellschaft | Plant and method for the additive production of at least one component |
| WO2018134033A1 (en) | 2017-01-19 | 2018-07-26 | Siemens Aktiengesellschaft | System and method for the additive manufacture of at least one component |
| CN106914619A (en) * | 2017-05-10 | 2017-07-04 | 窦鹤鸿 | Mobile assembling 3D printing equipment, 3D printing main body equipment and 3D printer |
| CN110614766A (en) * | 2019-09-23 | 2019-12-27 | 华中科技大学 | Multi-beam additive manufacturing equipment and method |
| CN112705707A (en) * | 2019-10-25 | 2021-04-27 | 灿美工程股份有限公司 | Dual scanner three-dimensional printer using selective laser sintering |
| CN110940215A (en) * | 2019-11-14 | 2020-03-31 | 上海卫星装备研究所 | Structure and manufacturing method of variable cross-section heat pipe |
| CN110940215B (en) * | 2019-11-14 | 2021-05-11 | 上海卫星装备研究所 | Structure and manufacturing method of variable cross-section heat pipe |
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