CN202239628U - Device for producing non-linear tree-shaped fluid suction cores by using selective laser melting - Google Patents
Device for producing non-linear tree-shaped fluid suction cores by using selective laser melting Download PDFInfo
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- CN202239628U CN202239628U CN2011203059704U CN201120305970U CN202239628U CN 202239628 U CN202239628 U CN 202239628U CN 2011203059704 U CN2011203059704 U CN 2011203059704U CN 201120305970 U CN201120305970 U CN 201120305970U CN 202239628 U CN202239628 U CN 202239628U
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Abstract
The utility model discloses a device for producing non-linear tree-shaped fluid suction cores by using selective laser melting. The device comprises a controller, a laser generator, a light path transmission element, a scanning galvanometer system, an F-theta lens, a forming chamber, an air inlet, an air outlet, a forming piece lifting cylinder, a powder lifting cylinder and a powder recovery cylinder. The device can rapidly produce the fluid suction cores that are in any pipe diameter ratio and in tree-shaped structures and have branch angles, can be used for scientific research and can meet the requirements of the frontier of efficient heat pipes; the patent also provides a scheme that the fluid suction cores in two different structures can be manufactured at one time by using an optical splitting system and the double scanning galvanometer system; the efficiency is improved while the quality is guaranteed; the device is significant for the existing experimental studies of the fluid suction cores and the producing of the high-quality fluid suction core structures; and the device is simple in structure, convenient and quick in operation and low in manufacturing cost and has positive popularization and application value.
Description
Technical field
The utility model electronics process industry technical field particularly relates to a kind of precinct laser fusion and prepares non-linear tree-shaped wick device.
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 that electronic and electrical equipment is compact, reliable to heat abstractor, 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.
Wick 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 wick material type, working medium fluid were confirmed, its heat transfer property just was decided by the performance of wick.According to the wick 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.The plough groove type wick is processed 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 process nonlinear multiple dimensioned liquid sucting core structure so the structural complexity of plough groove type wick receives very big restriction.For the high-grade, precision and advanced field that high requirement is arranged for some opposite heat tube performances now, the plough groove type wick reduces the backflow resistance when can not always provide enough capillary forces.
The wick 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; The result finds; Many granularities copper powder gradient sintering can increase the contact strength of copper powder and wall, reduces 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 property of wick 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 when reducing the wick pore radius, to increase the size of liquid reflux channel.Though the researcher has done many effort in the design of plough groove type and sintered type wick with 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 accomplish.
But experimental study shows that the heat-transfer capability of three kinds of liquid sucting core structures that traditional 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 purpose of the utility model is to overcome the shortcoming and defect of prior art, provides a kind of precinct laser fusion to prepare non-linear tree-shaped wick device, can prepare " tree " wick of any caliber ratio, angle of forking fast.
The utility model is realized through following technical scheme:
A kind of precinct laser fusion prepares non-linear tree-shaped wick device, comprises controller, laser generator, optic path element, scanning galvanometer system, F-θ mirror, forming room, air inlet, gas outlet, profiled member lift cylinders, powder lift cylinders, Powder Recovery cylinder;
Said laser generator, optic path element, scanning galvanometer system, F-θ mirror light path successively are provided with connection;
Said F-θ mirror is arranged at the upper center of forming room, and said air inlet is arranged at the inwall upper end of forming room's one side, and said gas outlet is arranged at the madial wall lower end of forming room's opposite side, also is provided with numerical control in the said forming room and moves the brush sheet;
Said 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;
Said optic path element comprises optical fiber transmission line and is installed in the collimator and extender mirror on the optical fiber transmission line successively; Said optic path element is made up of optoisolator and optical fiber coupling head.
Said scanning galvanometer system, laser generator, numerical control are moved brush sheet, powder lift cylinders, Powder Recovery cylinder and are connected with controller respectively.Said controller is a computer.
This device comprises that also the spectroscopy system is made up of total reflective mirror and half anti-mirror, said scanning galvanometer system are two scanning galvanometer systems, and said 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 wick
(1) set up the CAD geometrical model of wick, 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, through 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 wick 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 whether moulding of wick, 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 wick of tree.And adopt the utility model device, can produce the wick of tree fast.Can make wick reach rational structure, have minimum backflow resistance when making it to have maximum capillary force.
The utility model device can prepare any caliber " tree " wick than, angle of forking apace, both can be used for scientific research, has 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 systems, once can make the scheme of the wick of two different structures, when ensuring the quality of products, has improved efficient.This has significant meaning for existing about the experimental study of wick and the preparation of high-quality liquid sucting core structure.
The utility model 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 wick device for the utility model precinct laser fusion.
Fig. 2 prepares another structural representation of non-linear tree-shaped wick device for the utility model precinct laser fusion.
Fig. 3 is tree-shaped liquid sucting core structure sketch map.
Among the last figure: controller 1; Laser generator 2; Optic path element 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
Do further detailed explanation in the face of the specific embodiment of the utility model down, but the embodiment of the utility model is not limited thereto.
Embodiment
Prepare non-linear tree-shaped wick device like Fig. 1, the utility model precinct laser fusion, comprise that controller 1, laser generator 2, optic path element 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; Said laser generator 2, optic path element 3, scanning galvanometer system 4, F-θ mirror 6 light path successively are provided with connection;
Said F-θ mirror 6 is arranged at the upper center of forming room 7, and said air inlet 8 is arranged at the inwall upper end of forming room's 7 one sides, and said 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 said forming room 7 and moves brush sheet 10;
Said 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;
Said 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.Said 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, said scanning galvanometer system 4 are two scanning galvanometer systems 17, and said 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 through 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 element 3 comprises optical fiber transmission line and is installed in the collimator and extender mirror (not shown) on the optical fiber transmission line successively; Optic path element 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, makes particle size, avoid the too small dust that forms roughly at 500-1000nm, reduce simultaneously particles fuse can, can scan with faster speed, thereby improve workpiece surface quality.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, unsuitable cleaning, the spy adds the transparent dust cover 14 of convenient regularly dismounting cleaning.
Like 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 of laser generator 2 generations is divided into the scheme of two bundles; 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 through following steps the selective laser melting (SLM) molding process of wick:
(1) set up the CAD geometrical model of wick, 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, through 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 wick 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 whether moulding of wick, 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 utility model preferably as stated.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (6)
1. a precinct laser fusion prepares non-linear tree-shaped wick device; It is characterized in that, comprise controller, laser generator, optic path element, scanning galvanometer system, F-θ mirror, forming room, air inlet, gas outlet, profiled member lift cylinders, powder lift cylinders, Powder Recovery cylinder;
Said laser generator, optic path element, scanning galvanometer system, F-θ mirror light path successively are provided with connection;
Said F-θ mirror is arranged at the upper center of forming room, and said air inlet is arranged at the inwall upper end of forming room's one side, and said gas outlet is arranged at the inwall lower end of forming room's opposite side, also is provided with numerical control in the said forming room and moves the brush sheet;
Said 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;
Said scanning galvanometer system, laser generator, numerical control are moved brush sheet, powder lift cylinders, Powder Recovery cylinder and are connected with controller respectively.
2. precinct laser fusion according to claim 1 prepares non-linear tree-shaped wick device; It is characterized in that; This device comprises that also the spectroscopy system is made up of total reflective mirror and half anti-mirror, said scanning galvanometer system are two scanning galvanometer systems, and said spectroscopy system is arranged in the light path between laser generator and pair scanning galvanometer system.
3. precinct laser fusion according to claim 2 prepares non-linear tree-shaped wick device, it is characterized in that, said optic path element comprises optical fiber transmission line and is installed in the collimator and extender mirror on the optical fiber transmission line successively.
4. precinct laser fusion according to claim 3 prepares non-linear tree-shaped wick device, it is characterized in that, said optic path element is made up of optoisolator and optical fiber coupling head.
5. precinct laser fusion according to claim 4 prepares non-linear tree-shaped wick device, it is characterized in that, said forming room top is provided with transparent dust cover.
6. precinct laser fusion according to claim 5 prepares non-linear tree-shaped wick device, it is characterized in that, said controller is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203059704U CN202239628U (en) | 2011-08-22 | 2011-08-22 | Device for producing non-linear tree-shaped fluid suction cores by using selective laser melting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203059704U CN202239628U (en) | 2011-08-22 | 2011-08-22 | Device for producing non-linear tree-shaped fluid suction cores by using selective laser melting |
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| CN202239628U true CN202239628U (en) | 2012-05-30 |
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| CN2011203059704U Expired - Fee Related CN202239628U (en) | 2011-08-22 | 2011-08-22 | Device for producing non-linear tree-shaped fluid suction cores by using selective laser melting |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274968A (en) * | 2011-08-22 | 2011-12-14 | 华南理工大学 | Device for manufacturing nonlinear tree-shaped liquid suction core by selected region laser melting |
| CN103447528A (en) * | 2013-07-26 | 2013-12-18 | 西安交通大学 | Foldable changeable forming device for selective laser melting |
| CN103575654A (en) * | 2013-11-05 | 2014-02-12 | 湖北久之洋红外系统股份有限公司 | Method and system for improving terahertz scanning imaging speed |
| CN104550953A (en) * | 2014-12-17 | 2015-04-29 | 华南理工大学 | Dual-cylinder tabletop-type selective laser melting molding equipment and dual-cylinder tabletop-type selective laser melting molding method |
| CN106493368A (en) * | 2016-12-22 | 2017-03-15 | 华南理工大学 | A kind of selective laser fusing high efficiency forming device and method |
| CN106513680A (en) * | 2016-12-22 | 2017-03-22 | 华南理工大学 | Double-laser four-station rotary plate type selective laser melting forming device and method |
| WO2017091005A1 (en) * | 2015-11-27 | 2017-06-01 | 한국기계연구원 | Three-dimensional shape manufacturing device and manufacturing method, which use laser and powder |
| CN108349002A (en) * | 2015-10-26 | 2018-07-31 | 碧斯株式会社 | Utilize electric arc and the Method of printing and its device of the oriented energy deposition arc three-dimensional alloyed metal powder of alloyed metal powder core-spun yarn |
| 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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2011
- 2011-08-22 CN CN2011203059704U patent/CN202239628U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102274968A (en) * | 2011-08-22 | 2011-12-14 | 华南理工大学 | Device for manufacturing nonlinear tree-shaped liquid suction core by selected region laser melting |
| CN103447528A (en) * | 2013-07-26 | 2013-12-18 | 西安交通大学 | Foldable changeable forming device for selective laser melting |
| CN103447528B (en) * | 2013-07-26 | 2015-08-05 | 西安交通大学 | The Foldable and easy be shaped for selective laser fusing changes building mortion |
| CN103575654A (en) * | 2013-11-05 | 2014-02-12 | 湖北久之洋红外系统股份有限公司 | Method and system for improving terahertz scanning imaging speed |
| CN104550953A (en) * | 2014-12-17 | 2015-04-29 | 华南理工大学 | Dual-cylinder tabletop-type selective laser melting molding equipment and dual-cylinder tabletop-type selective laser melting molding method |
| CN108349002A (en) * | 2015-10-26 | 2018-07-31 | 碧斯株式会社 | Utilize electric arc and the Method of printing and its device of the oriented energy deposition arc three-dimensional alloyed metal powder of alloyed metal powder core-spun yarn |
| WO2017091005A1 (en) * | 2015-11-27 | 2017-06-01 | 한국기계연구원 | Three-dimensional shape manufacturing device and manufacturing method, which use laser and powder |
| US11090866B2 (en) | 2015-11-27 | 2021-08-17 | Korea Institute Of Machinery & Materials | Apparatus and method for manufacturing stereoscopic shape using laser and powder |
| CN106493368A (en) * | 2016-12-22 | 2017-03-15 | 华南理工大学 | A kind of selective laser fusing high efficiency forming device and method |
| CN106513680A (en) * | 2016-12-22 | 2017-03-22 | 华南理工大学 | Double-laser four-station rotary plate type selective laser melting forming device and method |
| CN106493368B (en) * | 2016-12-22 | 2018-02-27 | 华南理工大学 | A kind of selective laser fusing high efficiency forming device 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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140822 |
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