CN103691950A - 3D (Dimensional) printing method for tiny aluminum alloy waveguide piece - Google Patents
3D (Dimensional) printing method for tiny aluminum alloy waveguide piece Download PDFInfo
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- CN103691950A CN103691950A CN201310713251.XA CN201310713251A CN103691950A CN 103691950 A CN103691950 A CN 103691950A CN 201310713251 A CN201310713251 A CN 201310713251A CN 103691950 A CN103691950 A CN 103691950A
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Abstract
The invention discloses a 3D (Dimensional) printing method for a tiny aluminum alloy waveguide piece to solve the technical problem that the existing aluminum micro-droplet 3D printing method is poor in accuracy. According to the technical scheme, the 3D printing method for the tiny aluminum alloy waveguide piece comprises preparing a tiny mold core through soluble materials according to a tiny aluminum alloy waveguide piece inner chamber shape and size requirements; controlling aluminum micro-droplets to be uniformly stacked on the surface of the mold core in a point by point and layer by layer mode and printing the shape of the tiny aluminum alloy waveguide piece; obtaining the aluminum alloy waveguide piece which satisfies the requirements for the shape, the inner chamber shape, the size accuracy and the inner surface roughness through internally annealing, mold core dissolution and inner surface polishing. According to the 3D printing method for the tiny aluminum alloy waveguide piece, the aluminum alloy waveguide piece with the tiny size, the thin wall and the complex shape is formed due to stack of tiny-sized uniform aluminum molten droplets in a point by point and layer by layer mode and the inner chamber shape and the size accuracy of the tiny aluminum alloy waveguide piece are effectively guaranteed due to shape and size accuracy of the soluble mold core.
Description
Technical field
The present invention relates to a kind of 3D Method of printing, particularly a kind of 3D Method of printing of small aluminium alloy wave guide member.
Background technology
That aluminium waveguide has is lightweight, without silver-plated, low cost and other advantages, in the radar antenna of the Aeronautics and Astronautics aircraft such as unmanned plane, lighter-than-air flight device, satellite, deep space probe, there is extensive use.Along with this type of radar system is towards " miniaturization ", " lightweight " and " Highgrade integration " future development, require radar antenna aluminium wave guide member, as twisted waveguide, square square conversion waveguide, loudspeaker etc., size is less, wall thickness is thinner and cavity shape is more complicated, and this preparation method to existing wave guide member has proposed challenge.
Conventional aluminium wave guide member preparation technology has Plastic Forming, hot investment casting and accurate welding etc., has larger difficulty during for the preparation of small aluminium alloy wave guide member.The aluminium alloy waveguide plastic forming process that the multi-pass drawing of take is representative, is only applicable to the shaping of the tubular waveguide of single cross sectional shape, and the special-shaped thin wall wave guide member of inapplicable variable cross-section is shaped; Precision casting process is subject to the restriction of shaping dies, is difficult to cast cavity shape complexity, the small thin-wall aluminum alloy wave guide member of size; There is micro thin walled sheet clamping location difficulty, weld the problems such as yielding in accurate butt welding process, also more difficult for the small aluminium alloy wave guide member that is shaped.
The metal 3D printing technique of rising in recent years provides a brand-new method for complex-shaped metal parts is shaped.Document " Freeform fabrication of aluminum parts by direct deposition of molten aluminum.Journal of Materials Processing Technology173 (2006): 209 – 212 " discloses a kind of aluminium droplet 3D Method of printing, by spraying even aluminium droplet, carry out pointwise and successively pile up, can realize the free forming of Al-alloy parts, this provides a new way for preparing fast complicated shape alumiaum article.But accessory size deviation and surface roughness that existing metallic aluminium molten drop printing technique is shaped are larger, are difficult to meet the requirement of wave guide member cavity shape, dimensional accuracy and surface roughness.Up to now, also do not have a kind of 3D printing technique can realize the quick preparation of small aluminium alloy wave guide member.
Summary of the invention
In order to overcome the poor deficiency of existing aluminium droplet 3D Method of printing accuracy, the invention provides a kind of 3D Method of printing of small aluminium alloy wave guide member.The method, according to small aluminium alloy wave guide member cavity shape and dimensional requirement, adopts soluble material to prepare small core; Control the pointwise in whose surfaces of even aluminium droplet, pile up layer by layer, print small aluminium alloy wave guide member profile; Then through integrally annealed, core dissolution and inner surface glossing, be met external shape, the aluminium alloy wave guide member that cavity shape, dimensional accuracy and inside surface roughness require.The present invention piles up layer by layer by the small even aluminium molten drop pointwise of size, and the size that is shaped is small, the aluminium alloy wave guide member of wall thickness, complex contour.Meanwhile, utilize the shape of soluble core, dimensional accuracy can effectively improve small aluminium alloy wave guide member cavity shape and dimensional accuracy.
The technical solution adopted for the present invention to solve the technical problems: a kind of 3D Method of printing of small aluminium alloy wave guide member, is characterized in comprising the following steps:
Step 1, according to aluminium alloy wave guide member cavity shape and dimensional requirement, adopt soluble material to prepare soluble core 8;
Step 2, soluble core 8 is arranged on the core support 6 of four axes motion platform, by X-axis 12, Y-axis 13, Z axis 14 and the R axle 9 of motion platform, controls soluble cores 8 according to default orbiting motion;
Step 3, removal aluminum alloy blank oxide skin are placed in crucible 1, in spraying environment, fill inert gas, and the oxygen content in assurance low-oxygen environment 15 is lower than 1PPM;
The micro-droplet generating device of step 6, startup crucible 1 inside, by nozzle 3 ejection metal droplets 4;
The relative position of crucible 1 and soluble core 8 is sprayed in step 7, location, starts print routine, makes metal droplet 4 by default track, carry out pointwise on soluble core 8 surfaces and successively piles up forming shaped product 5;
Step 9, dissolving soluble core 8, the inner surface of polished aluminum alloy wave guide member, is met the aluminium alloy wave guide member that external shape, cavity shape, dimensional accuracy and surface roughness require.
The invention has the beneficial effects as follows: the method, according to small aluminium alloy wave guide member cavity shape and dimensional requirement, adopts soluble material to prepare small core; Control the pointwise in whose surfaces of even aluminium droplet, pile up layer by layer, print small aluminium alloy wave guide member profile; Then through integrally annealed, core dissolution and inner surface glossing, be met external shape, the aluminium alloy wave guide member that cavity shape, dimensional accuracy and inside surface roughness require.The present invention piles up layer by layer by the small even aluminium molten drop pointwise of size, and the size that is shaped is small, the aluminium alloy wave guide member of wall thickness, complex contour.Meanwhile, utilize shape, the dimensional accuracy of soluble core, effectively improved small aluminium alloy wave guide member cavity shape and dimensional accuracy.
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of device for the 3D Method of printing of the small aluminium alloy wave guide member of the present invention.
Fig. 2 is the print procedure schematic diagram of the 3D Method of printing of the small aluminium alloy wave guide member of the present invention.
Fig. 3 (a) is the inventive method embodiment 2 electromagnetic horn core used; Fig. 3 (b) is the small electromagnetic horn that the inventive method embodiment 2 prints by 3D.
In figure, 1-crucible, 2-induction heater, 3-nozzle, 4-metal droplet, 5-shaping product, 6-core support, 7-thermocouple, 8-soluble core, 9-R axle, 10-infrared radiation thermometer, 11-R axle rotary electric machine, 12-X axle, 13-Y axle, 14-Z axle, 15-low-oxygen environment, 16-initiation layer droplet, 17-side's square conversion waveguide finished parts, 18-electromagnetic horn core, the small electromagnetic horn of 19-.
The specific embodiment
With reference to Fig. 1-3, describe the present invention in detail.
Embodiment 1: the printing speed of square square conversion waveguide.
According to wave guide member cavity shape, dimensional requirement, adopt soluble material to prepare soluble core 8.Soluble core 8 is arranged on the core support 6 of four axes motion platform, in four axes motion platform, X-axis 12, Y-axis 13 realize the rectilinear motion of soluble core 8, and Z axis 14 is realized metal droplet 4 and piled up distance adjustment, and R axle 9 is realized rotatablely moving of soluble core 8.
Prepare crucible 1, aluminum alloy materials and spray environment.Adopt chemicophysical method to remove the oxide skin of aluminum alloy material surface, dry being placed in crucible 1.In crucible 1 and low-oxygen environment 15, be filled with inert gas, and guarantee in low-oxygen environment 15 that by the method for circulation deoxygenation oxygen content is lower than 1PPM.Start system heating program, induction heater 2 is progressively heated to crucible 1 above 100～150 ℃ of aluminum alloy melt phase line, by thermocouple 7, measure the temperature of crucible 1, by infrared radiation thermometer 10, measure the surface temperature of soluble core 8, control the distance of power and soluble core 8 and the crucible 1 of induction heater 2, realize crucible 1 and control with soluble core 8 temperature.
According to the path of the outer shape of shaping waveguide and the transmission of aluminium molten drop heat, determine the track that droplet is printed.The relative position of crucible 1 and core 8 is sprayed in location, start the micro-droplet generating device of crucible 1 inside, by nozzle 3, eject metal droplet 4, start deposition program, the metal droplet 4 spraying is printed on soluble core 8 surfaces, by coordinating track, the temperature of metal droplet 4, the metal droplet 4 that assurance pointwise is successively piled up is accurately located, is fully sprawled and well merges each other on matrix; In print procedure, along Y-axis 13, move soluble core 8, on the horizontal plane of soluble core 8, deposit after a line metal droplet 4, R axle rotary electric machine 11 rotation soluble cores 8 make its side level, continue deposition a line, complete after 16 printings of initiation layer droplet mobile X-axis 12, carry out the accumulation of next week droplet, finally realize the pointwise of rectangular waveguide, print line by line.
Complete after wave guide member printing-forming, carry out aftertreatment technology to guarantee cavity shape, dimension precision requirement.Take out shaping product 5, then carry out integrally annealed processing, the thermal stress producing when eliminating droplet rapid solidification; Dissolve soluble core 8, by inner surface glossing, to obtain the inside surface roughness meeting the demands, finally the side's of obtaining square conversion waveguide finished parts 17.
Embodiment 2: the printing speed of small aluminium alloy electromagnetic horn.
The present embodiment is basic identical with the preparation technology who is embodiment 1, different cavity shapes and profile.According to cavity shape, the dimensional requirement of electromagnetic horn, adopt soluble material to make electromagnetic horn core 18.Electromagnetic horn core 18 is arranged on the support 6 of four axes motion platform, in four axes motion platform, X-axis 12, Y-axis 13 realize the rectilinear motion of electromagnetic horn core 8, and Z axis 14 is realized metal droplet 4 and piled up distance adjustment, and R axle 9 is realized rotatablely moving of electromagnetic horn core 18.
On electromagnetic horn core 18 surfaces, carry out droplet and pile up line by line, complete after a row metal deposition, transfer next line to and print, finally print small electromagnetic horn 19, until whole product printing-forming.Complete after processing, carry out integrally annealed processing, the thermal stress producing while eliminating droplet rapid solidification, finally dissolves electromagnetic horn core 18, by inner surface glossing, to obtain small electromagnetic horn 19.
Claims (1)
1. a 3D Method of printing for small aluminium alloy wave guide member, is characterized in that comprising the following steps:
Step 1, according to aluminium alloy wave guide member cavity shape and dimensional requirement, adopt soluble material to prepare soluble core (8);
Step 2, that soluble core (8) is arranged on to the core support (6) of four axes motion platform is upper, and X-axis (12), Y-axis (13), Z axis (14) and R axle (9) control soluble core (8) by motion platform are according to default orbiting motion;
Step 3, removal aluminum alloy blank oxide skin are placed in crucible (1), in spraying environment, fill inert gas, and the oxygen content in assurance low-oxygen environment (15) is lower than 1PPM;
Step 4, the system heating program that starts, be progressively heated to crucible (1) above 100～150 ℃ of aluminum alloy melt phase line by induction heater (2);
Step 5, thermocouple 7 measurement crucible (1) temperature of passing through, by infrared radiation thermometer (10), measure the surface temperature of soluble core (8), control the distance of power and soluble core (8) and the crucible (1) of induction heater (2), realize crucible (1) and control with soluble core (8) temperature;
Step 6, the inner micro-droplet generating device of startup crucible (1), by nozzle (3) ejection metal droplet (4);
The relative position of crucible (1) and soluble core (8) is sprayed in step 7, location, starts print routine, makes metal droplet (4) by default track, carry out pointwise on soluble core (8) surface and successively piles up forming shaped product (5);
Step 8, complete after deposition, take out shaping product (5), integral body is carried out temper, eliminates the thermal stress of shaping product (5);
Step 9, dissolving soluble core (8), the inner surface of polished aluminum alloy wave guide member, is met the aluminium alloy wave guide member that external shape, cavity shape, dimensional accuracy and surface roughness require.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105014957A (en) * | 2014-04-15 | 2015-11-04 | 上海智位机器人有限公司 | 3D printer and power-down continuous-printing method thereof |
| CN106159453A (en) * | 2016-06-20 | 2016-11-23 | 清华大学 | A kind of aluminium alloy electromagnetic horn towards low rail location load and manufacture method thereof |
| CN106176000A (en) * | 2016-08-31 | 2016-12-07 | 杭州捷诺飞生物科技有限公司 | For preparing 3D printing equipment and the equipment of angiocarpy bracket |
| CN106180558A (en) * | 2016-09-21 | 2016-12-07 | 成都创慧科达科技有限公司 | A kind of 3D print system based on titanium or titanium alloy casting sand mold |
| CN106399898A (en) * | 2016-09-27 | 2017-02-15 | 西北工业大学 | Aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method |
| CN107351374A (en) * | 2017-07-17 | 2017-11-17 | 西安工业大学 | A kind of process for machining and manufacturing of high frequency antenna feed |
| JPWO2017203568A1 (en) * | 2016-05-23 | 2018-06-07 | 三菱電機株式会社 | Method for manufacturing waveguide device |
| CN108225859A (en) * | 2018-01-09 | 2018-06-29 | 上海理工大学 | A kind of method that Single Fracture rock sample is prepared based on 3D printing technique |
| CN108370102A (en) * | 2016-03-09 | 2018-08-03 | 康普技术有限责任公司 | It is used to form the 3D printing technique of flat plate array antenna |
| CN110026880A (en) * | 2019-04-15 | 2019-07-19 | 中国电子科技集团公司第二十研究所 | The inner surface abrasive Flow of 3D printing thin wall special-shaped electromagnetic horn polishes tooling |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014957A (en) * | 2014-04-15 | 2015-11-04 | 上海智位机器人有限公司 | 3D printer and power-down continuous-printing method thereof |
| CN108370102A (en) * | 2016-03-09 | 2018-08-03 | 康普技术有限责任公司 | It is used to form the 3D printing technique of flat plate array antenna |
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| CN106159453A (en) * | 2016-06-20 | 2016-11-23 | 清华大学 | A kind of aluminium alloy electromagnetic horn towards low rail location load and manufacture method thereof |
| CN106159453B (en) * | 2016-06-20 | 2019-05-07 | 清华大学 | A kind of aluminium alloy electromagnetic horn and its manufacturing method towards low rail positioning load |
| CN106176000A (en) * | 2016-08-31 | 2016-12-07 | 杭州捷诺飞生物科技有限公司 | For preparing 3D printing equipment and the equipment of angiocarpy bracket |
| CN106180558A (en) * | 2016-09-21 | 2016-12-07 | 成都创慧科达科技有限公司 | A kind of 3D print system based on titanium or titanium alloy casting sand mold |
| CN106399898A (en) * | 2016-09-27 | 2017-02-15 | 西北工业大学 | Aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method |
| CN107351374A (en) * | 2017-07-17 | 2017-11-17 | 西安工业大学 | A kind of process for machining and manufacturing of high frequency antenna feed |
| CN108225859A (en) * | 2018-01-09 | 2018-06-29 | 上海理工大学 | A kind of method that Single Fracture rock sample is prepared based on 3D printing technique |
| CN108225859B (en) * | 2018-01-09 | 2020-09-01 | 上海理工大学 | Method for preparing single-fracture rock sample based on 3D printing technology |
| CN110026880A (en) * | 2019-04-15 | 2019-07-19 | 中国电子科技集团公司第二十研究所 | The inner surface abrasive Flow of 3D printing thin wall special-shaped electromagnetic horn polishes tooling |
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