CN106493379A - A kind of 3D printing powder Preparation equipment and its using method - Google Patents
A kind of 3D printing powder Preparation equipment and its using method Download PDFInfo
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- CN106493379A CN106493379A CN201611141279.0A CN201611141279A CN106493379A CN 106493379 A CN106493379 A CN 106493379A CN 201611141279 A CN201611141279 A CN 201611141279A CN 106493379 A CN106493379 A CN 106493379A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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Abstract
A kind of 3D printing powder Preparation equipment, including feeding mechanism, wind pushing mechanism, airduct, high-voltage generator, reaction chamber, 3D printing powder catcher and temperature control system, the reaction chamber is vertical type class flat shape quadrilateral structure, the reaction chamber includes left side cavity wall, right side cavity wall, top chamber wall and bottom chamber wall, to to being vertically arranged, the top chamber wall and the bottom chamber wall are to angularly disposed for the left side cavity wall and the right side cavity wall；The feeding mechanism connects setting with the left side cavity wall；The high-voltage generator is stretched into inside the reaction chamber through the top chamber wall；The wind pushing mechanism connects setting by the airduct with the reaction chamber；The 3D printing powder catcher connects setting with the right side cavity wall；The temperature control system is located at the top of the reaction chamber, for adjusting the temperature of cooling wind.Metal dust sphericity that the present invention is prepared is high, composition is uniform, oxygen content is low, and the excellent dispersibility of metal dust and transporting are suitable to 3D printer use.
Description
Technical field
The invention belongs to 3D printer raw material technical field, and in particular to a kind of 3D printing powder Preparation equipment and its user
Method.
Background technology
3D printing technique has become one of emerging technology that the whole world is most paid close attention at present.This new mode of production and other
Digitalisation Manufacture Mode will promote the realization of the third time industrial revolution together.It is wherein one big that restriction 3D printing technique is developed rapidly
Bottleneck is printed material, particularly metallic print material.Research and development and the metal material that production performance is more preferable and versatility is higher are
Lift the key of 3D printing technique.In high-performance metal component directly using 3D printing technique manufacture view, need that particle diameter is thin, grain
Footpath is uniform, all kinds of metal dusts of high sphericity, low oxygen content.Metal dust high-end at present relies primarily on import.And it is external
Raw material is often bundled high price sales volume with equipment by manufacturer, greatly constrains the development of the metal 3D printing technique of China.
At present, the predominantly organic tool polishing of the method for 3D printing dusty material, self-propagating high-temperature synthesis, atomization, also
Former method, electrolysis, rotary electrode method, chemical vapour deposition technique etc., and the metal dust of gas atomization production has good sphericity,
Particle size distribution is controllable, and production efficiency is high, the features such as low cost, and becomes the main production method of 3D printing metal dust.But
Gas atomization high cost, energy consumption are big, and some key components and partss (such as shower nozzle) etc. are also monopolized by foreign countries for a long time.Material prepared by water fog method
Then purity is inadequate for material.Therefore, the current country does not have spherical metal powder body Preparation equipment and powder body consumptive material needed for ripe 3D printing.
It is badly in need of a kind of 3D printing metal dust manufacturing equipment on market, to meet high-quality of the 3D printing to metal dust
Require.
Content of the invention
Exploding wires method is in certain medium or vacuum, applies high voltage transient to silk conductor and produces powerful pulse
Electric current, makes fusing in a conductor short time, gasification, expansion, explodes.Its explosion product is high in the presence of explosion wave
Speed is sputtered to surrounding, forms nanometer powder after cooling.Discharge-induced explosion tinsel as one of metal-powder preparation method, with equipment
Small volume, energy consumption are low, the characteristics of yield is big.In terms of 3D printing powder is prepared, with preferable application prospect.
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of 3D printing powder Preparation equipment, prepares
The metal dust sphericity that goes out is high, composition is uniform, oxygen content is low, and the excellent dispersibility of metal dust and transporting are suitable to 3D printing
Machine is used.Meanwhile, present invention also offers the using method of 3D printing powder Preparation equipment.
The present invention is realized in：
A kind of 3D printing powder Preparation equipment, including feeding mechanism, wind pushing mechanism, airduct, high-voltage generator, reaction chamber,
3D printing powder catcher and temperature control system,
The reaction chamber be vertical type class flat shape quadrilateral structure, the reaction chamber include left side cavity wall, right side cavity wall, top
Portion's cavity wall and bottom chamber wall, the left side cavity wall and the right side cavity wall to being vertically arranged, the top chamber wall and the bottom
Portion's cavity wall is to angularly disposed；
The feeding mechanism connects setting with the left side cavity wall；
The high-voltage generator is stretched into inside the reaction chamber through the top chamber wall；
The wind pushing mechanism connects setting by the airduct with the reaction chamber；
The 3D printing powder catcher connects setting with the right side cavity wall；
The temperature control system is located at the top of the reaction chamber, for adjusting the temperature of cooling wind.
Preferably, also include residue collector, the residue collector is located at the bottom chamber wall and the right side cavity wall
The position of intersection, is easy to residue and bulky grain metal powder to fall into the residue collector.
Preferably, the wind pushing mechanism includes air outlet, and the air outlet is located inside the reaction chamber, the high pressure
Generating apparatus include electrode, the air outlet and the electrode just to arranging, for cooling down the molten drop produced at electrode.
Preferably, also include that cyclone collector, the cyclone collector are located at the right side of the right side cavity wall, the whirlwind
Catcher is connected with the 3D printing powder catcher by the airduct.
Preferably, the temperature control system includes water cooler, and the water cooler is used for carrying out heat exchange with cooling gas
To control the temperature of cooling gas.
Preferably, the reaction chamber includes liner, and the inner lining material is politef.
According to a further aspect in the invention, a kind of method using above-mentioned 3D printing powder Preparation equipment, comprises the following steps：
S1：Charging：Tinsel stretches charging in feeding mechanism,
S2：Aerosolization：Aerosolization under the tinsel high voltage that high tension generator is produced in the reactor chamber, forms small liquid
Drop,
S3：Condensation and 3D printing powder are collected：Drop is condensed after running into the cooling gas that wind pushing mechanism above reaction chamber blows
Micron-size spherical metallic particles is formed, residue and bulky grain are fallen in the residue collector of reaction chamber bottom, spherical metallic particles
Down enter 3D printing powder catcher with air-flow to be collected,
S4：Nano powder is collected：Carry part nanoscale powder cooling air-flow from 3D printing powder catcher out after, enter
In cyclone collector, the collection of nanoscale powder is carried out,
S5：Cooling：From cyclone collector out, enter in temperature control system carries out temperature adjustment to gas,
S6：Air-supply：Gas after cooling reenters reaction chamber through wind pushing mechanism, carries out next circulation.
Preferably, the particle diameter of the 3D printing powder is 10-50um.
Preferably, the operating temperature that the temperature control system is adjusted is at least 15 degree.
Preferably, the running voltage of the high tension generator is less than 25KV.
Compared with prior art, the invention has the advantages that：
(1) the electric atomization metal silk of the present invention, capacity usage ratio are big, low cost；
(2) shield inert gas metal is used, and powder can avoid metal dust in manufacture process oxidized from oxidation
Appearance etc. defect；
(3) in the present invention, the setting of reaction chamber side wall oblique structure facilitates the collection of residue, while be also oriented to carrying
The cooling gas of metal powder enter 3D printing powder catcher and carry out the collection of powder；
(4) reaction chamber liner adopts polytetrafluoroethylmaterial material, it is to avoid the reactor wall of metal material is by gas under high pressure
Change and form metallic vapour, cause the pollution to metal nano powder；
(5) spherical metal powder body prepared by the method, particle diameter is in 10-50um, with good mobility and high-purity,
It is suitable as metal 3D printing consumptive material.
Description of the drawings
Fig. 1 is 3D printing powder Preparation equipment schematic diagram.
Labelling in accompanying drawing is as follows：
1- feeding mechanisms, 2- wind pushing mechanisms, 21- air outlets, 22- blower fans, 3- temperature control systems, 4- high-voltage generators, 41-
Electrode, 5- reaction chambers, cavity wall on the left of 51-, cavity wall on the right side of 52-, 53- top chamber walls, 54- bottom chamber walls, 6- airducts, 7- whirlwind are received
Storage, the second air inlets of 71-, 72- nano powder Material collecting box for harvesting, the second air outlets of 73-, 8-3D print powder catcher, the first air inlets of 81-
Mouthful, the first air outlets of 82-, 9- residue collectors.
Specific embodiment
Below with reference to exemplary embodiment, feature and aspect that accompanying drawing describes the present invention in detail.In accompanying drawing, identical is attached
Icon note represents the same or analogous part of function.Although the various aspects of embodiment are shown in the drawings, unless special
Do not point out, it is not necessary to accompanying drawing drawn to scale.
For a person skilled in the art, it should be apparent that " forward and backward, upper and lower, left and right " for referring in the application etc.
Direction word is merely to the present invention can more intuitively be explained, therefore above-mentioned direction word in the text is not constituted to this
The restriction of the protection domain of invention.
As shown in figure 1, a kind of 3D printing powder Preparation equipment, occurs including feeding mechanism 1, wind pushing mechanism 2, airduct 6, high pressure
Device 4, reaction chamber 5,3D printing powder catcher 8, temperature control system 3, cyclone collector 7 and residue collector 9.Feeding mechanism 1 with
The left side connection of cavity wall 51 is arranged.High-voltage generator 4 is stretched into inside reaction chamber 5 through top chamber wall 53.Wind pushing mechanism 2 passes through wind
Pipe 6 connects setting with reaction chamber 5.3D printing powder catcher 8 connects setting with right side cavity wall 52.Temperature control system 3 is located at reaction chamber 5
Top, for adjust cooling wind temperature.Residue collector 9 is located at the position that bottom chamber wall 54 and right side cavity wall 52 are intersected,
It is easy to residue and bulky grain metal powder to fall into residue collector 9.Cyclone collector 7 is located at the right side of right side cavity wall 52, and whirlwind is received
Storage 7 is connected with 3D printing powder catcher 8 by airduct 6.By the electric atomization metal of the 3D printing powder Preparation equipment of the present invention
Silk, capacity usage ratio are big, low cost.Meanwhile, using shield inert gas metal, powder can avoid manufacturing from oxidation
The appearance of the defect such as in journey metal dust is oxidized
As shown in figure 1, feeding mechanism 1 is connected with the left side cavity wall of reaction chamber 5, feeding mechanism is by tinsel or sheet metal
In feeding reaction chamber 5 near electrode 41, realize that electrode 41 discharges by high-voltage generator 4, make tinsel or sheet metal high
Piezoelectricity aerosolization, forms molten drop.Feeding mechanism 1 can be the device that commonly uses in discharge-induced explosion field.
As shown in figure 1, wind pushing mechanism 2 includes air outlet 21 and blower fan 22.It is preferred that wind pushing mechanism 2 is located at 1 He of feeding mechanism
High-voltage generator centre position, to reduce the space of hold facility.Also wind pushing mechanism can be arranged on other positions, by adding
6 grade of long airduct realizes the air-supply to reaction chamber 5.Wind is sent in reaction chamber 5 through air outlet 21 by blower fan 22 by airduct 6, realizes
The cooling and carrying wind of atomization metal drop are sent and is collected.It is preferred that air outlet 21 is located inside reaction chamber 5, air outlet 21 and electricity
Pole 41 just to arrange, for cool down at electrode produce molten drop.
As shown in figure 1, the connection of airduct 6 is arranged in whole Preparation equipment, wind pushing mechanism realizes air-supply through airduct 6, then will
Air-flow warp let-off 3D printing powder catcher 8 and the cyclone collector 7 successively of metal powder is carried, the gas after solid and gas is separated is sent through airduct
Carry out temperature adjustment, then the air-supply that a new circulation is carried out through wind pushing mechanism 2 to temperature control system 3.
As shown in figure 1, high-voltage generator 4 includes electrode 41.High-voltage generator 4 makes electrode through top chamber wall 53
41 are located in reaction chamber 5, are easy to the tinsel for being sent into come to feeding mechanism or sheet metal to be electrically atomized.
As shown in figure 1, reaction chamber 5 is vertical type class flat shape quadrilateral structure.Reaction chamber 5 includes left side cavity wall 51, right side
Cavity wall 52, top chamber wall 53 and bottom chamber wall 54.Left side cavity wall 51 and right side cavity wall 52 pairs to being vertically arranged, 53 He of top chamber wall
Bottom chamber wall 54 pairs is to angularly disposed.The setting of reaction chamber side wall oblique structure, facilitates the collection of residue, while be also oriented to taking
Cooling gas with metal powder enter 3D printing powder catcher and carry out the collection of powder.It is preferred that reaction chamber 5 includes liner, liner material
Expect for politef, or there is with politef the material of similarity, it is to avoid metal material is anti-under high pressure
Answer cavity wall metallic vapour to be formed by gasification, cause the pollution to metal nano powder.
As shown in figure 1,3D printing powder catcher 8 includes that the first air inlet 81, the first air outlet 82 and collecting box (do not show
Figure).First air inlet 81 is connected with reaction chamber 5 by right side cavity wall 52, is easy in reaction chamber carry the gas stream of metal powder
Enter in the collecting box of 3D printing powder catcher 8 through the first air inlet 81.First air outlet 82 is connected with airduct 6.Through collecting
After 3D printing powder collected by case, the air-flow of nanometre metal powder is carried through the first air outlet 82, flow in airduct 6, and enter through airduct 6
Enter in cyclone collector 7.
As shown in figure 1, temperature control system 3 includes water cooler (non-diagram).Water cooler is used for carrying out heat with cooling gas
Exchange to control the temperature of cooling gas.Gas after separating through cyclone collector solid and gas, enters temperature control system, by water cooling
Device carries out heat exchange with gas, to realize the regulation to cooling gas temperature.Adjust the gas after temperature and be then again introduced into airduct 6
In.Certainly, the cooler in temperature control system can also be the cooler of other liquid and type, and can realize thermoregulator
Other devices, meet the requirement of the present invention.
As shown in figure 1, cyclone collector 7 includes the second air inlet 71, nano powder Material collecting box for harvesting 72 and the second air outlet 73.Rotation
Wind catcher 7 is located at the right side of right side cavity wall 52, and cyclone collector 7 is connected with 3D printing powder catcher 8 by airduct 6.Second
Air inlet 71 is connected with airduct 6, is easy to the air-flow come from 3D printing powder catcher to enter in cyclone collector 7.Air-flow is through nanometer
After powder Material collecting box for harvesting 72 collects nano powder, the gas after solid and gas is separated is reentered in airduct 6 through the second air outlet 73 again.And through wind
Pipe 6 is entered in temperature control system 4 and carries out temperature adjustment.
As shown in figure 1, residue collector 9 includes charging aperture (non-diagram).Residue collector 9 is located at bottom chamber wall 54 and the right side
The position that side chamber wall 52 intersects, is easy to residue and bulky grain metal powder to fall into residue collector by charging aperture, it is achieved that to residual
The recovery of slag, it also avoid impact of the residue to reaction chamber.
According to a further aspect in the invention, a kind of method using above-mentioned 3D printing powder Preparation equipment, comprises the following steps：
S1：Charging：Tinsel stretches charging in feeding mechanism,
S2：Aerosolization：Aerosolization under the tinsel high voltage that high tension generator is produced in the reactor chamber, forms small liquid
Drop,
S3：Condensation and 3D printing powder are collected：Drop is condensed after running into the cooling gas that wind pushing mechanism above reaction chamber blows
Micron-size spherical metallic particles is formed, the running voltage of high tension generator is less than 25KV；Residue and bulky grain fall into reaction chamber bottom
In the residue collector in portion, spherical metallic particles down enter 3D printing powder catcher with air-flow and are collected, 3D printing powder
Particle diameter is 10-50um,
S4：Nano powder is collected：Carry part nanoscale powder cooling air-flow from 3D printing powder catcher out after, enter
In cyclone collector, the collection of nanoscale powder is carried out,
S5：Cooling：From cyclone collector out, enter carries out temperature adjustment to gas in temperature control system, and temperature control system is adjusted
The operating temperature of section is at least 15 degree,
S6：Air-supply：Gas after cooling reenters reaction chamber through wind pushing mechanism, carries out next circulation.
During use, tinsel is transported to through wire feeder after high tension generator, and aerosolization (based on atomization) forms small
Drop, cold front heavy rain that droplet is blown from above forms micron-size spherical particles, and right granule down enters 3D with air-flow and beats
Print powder catcher, and residue then enters residue collector；After collecting through 3D printing powder catcher, in cooling wind, contain part nanometer
Level powder (tinsel gasifies to be formed) enters cyclone collector with air-flow, enters in nano material collection material mouth.Cooling wind is then entered
Reaction chamber formation is entered by pipeline after being cooled down in temperature control system to circulate next time.
Compared with prior art, the invention has the advantages that：
(1) the electric atomization metal silk of the present invention, capacity usage ratio are big, low cost；
(2) shield inert gas metal is used, and powder can avoid metal dust in manufacture process oxidized from oxidation
Appearance etc. defect；
(3) in the present invention, the setting of reaction chamber side wall oblique structure facilitates the collection of residue, while be also oriented to carrying
The cooling gas of metal powder enter 3D printing powder catcher and carry out the collection of powder；
(4) reaction chamber liner adopts polytetrafluoroethylmaterial material, it is to avoid the reactor wall of metal material is by gas under high pressure
Change and form metallic vapour, cause the pollution to metal nano powder；
(5) spherical metal powder body prepared by the method, particle diameter is in 10-50um, with good mobility and high-purity,
It is suitable as metal 3D printing consumptive material.
Finally it should be noted that：Above-described each embodiment is merely to illustrate technical scheme, rather than to which
Limit；Although being described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：
Which still can be modified to the technical scheme described in previous embodiment, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technical side
The scope of case.
Claims (10)
1. a kind of 3D printing powder Preparation equipment, including feeding mechanism, wind pushing mechanism, airduct, high-voltage generator, reaction chamber, 3D
Print powder catcher and temperature control system, it is characterised in that：
The reaction chamber be vertical type class flat shape quadrilateral structure, the reaction chamber include left side cavity wall, right side cavity wall, top chamber
Wall and bottom chamber wall, the left side cavity wall and the right side cavity wall to being vertically arranged, the top chamber wall and the bottom chamber
Wall is to angularly disposed；
The feeding mechanism connects setting with the left side cavity wall；
The high-voltage generator is stretched into inside the reaction chamber through the top chamber wall；
The wind pushing mechanism connects setting by the airduct with the reaction chamber；
The 3D printing powder catcher connects setting with the right side cavity wall；
The temperature control system is located at the top of the reaction chamber, for adjusting the temperature of cooling wind.
2. 3D printing powder Preparation equipment according to claim 1, it is characterised in that：Also include residue collector, described residual
Slag catcher is located at the position that the bottom chamber wall and the right side cavity wall are intersected, and is easy to residue and bulky grain metal powder to fall into institute
State residue collector.
3. 3D printing powder Preparation equipment according to claim 1, it is characterised in that：The wind pushing mechanism includes air outlet,
The air outlet is located inside the reaction chamber, and the high-voltage generator includes electrode, and the air outlet is with the electrode just
To arranging, for cooling down the molten drop produced at electrode.
4. 3D printing powder Preparation equipment according to claim 1, it is characterised in that：Also include cyclone collector, the rotation
Wind catcher is located at the right side of the right side cavity wall, and the cyclone collector is by the airduct and the 3D printing powder catcher
Connection.
5. 3D printing powder Preparation equipment according to claim 1, it is characterised in that：The temperature control system includes water cooling
Device, the water cooler are used for carrying out heat exchange with cooling gas to control the temperature of cooling gas.
6. 3D printing powder Preparation equipment according to claim 1, it is characterised in that：The reaction chamber includes liner, described
Inner lining material is politef.
7. a kind of method that usage right requires 3D printing powder Preparation equipment described in any one of 1-6, it is characterised in that：Including following
Step：
S1：Charging：Tinsel stretches charging in feeding mechanism,
S2：Aerosolization：Aerosolization under the tinsel high voltage that high tension generator is produced in the reactor chamber, forms small drop,
S3：Condensation and 3D printing powder are collected：Condensation after drop runs into the cooling gas that wind pushing mechanism above reaction chamber blows is formed
Micron-size spherical metallic particles, residue and bulky grain are fallen in the residue collector of reaction chamber bottom, and spherical metallic particles are down
3D printing powder catcher is entered with air-flow to be collected,
S4：Nano powder is collected：Carry part nanoscale powder cooling air-flow from 3D printing powder catcher out after, enter whirlwind
In catcher, the collection of nanoscale powder is carried out,
S5：Cooling：From cyclone collector out, enter in temperature control system carries out temperature adjustment to gas,
S6：Air-supply：Gas after cooling reenters reaction chamber through wind pushing mechanism, carries out next circulation.
8. using method according to claim 7, it is characterised in that：The particle diameter of the 3D printing powder is 10-50um.
9. the using method according to claim 7 or 8, it is characterised in that：The operating temperature that the temperature control system is adjusted to
It is 15 degree less.
10. using method according to claim 9, it is characterised in that：The running voltage of the high tension generator is less than
25KV.
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| CN201611141279.0A CN106493379B (en) | 2016-12-12 | 2016-12-12 | A kind of 3D printing powder Preparation equipment and its application method |
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| CN201611141279.0A CN106493379B (en) | 2016-12-12 | 2016-12-12 | A kind of 3D printing powder Preparation equipment and its application method |
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| CN106493379B CN106493379B (en) | 2018-02-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107287567A (en) * | 2017-07-11 | 2017-10-24 | 成都天府新区河川科技有限公司 | Droplet ion sputtering technique and hydraulic turbine preparation method |
| CN108161017A (en) * | 2018-01-04 | 2018-06-15 | 广东银纳科技有限公司 | It is a kind of for metal powder of 3D printing and preparation method thereof |
| CN109676148A (en) * | 2019-01-28 | 2019-04-26 | 深圳微纳增材技术有限公司 | The preparation facilities of 3D printing metal powder |
| CN115026296A (en) * | 2022-06-13 | 2022-09-09 | 广东银纳科技有限公司 | Medical-grade tantalum powder for additive manufacturing and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287567A (en) * | 2017-07-11 | 2017-10-24 | 成都天府新区河川科技有限公司 | Droplet ion sputtering technique and hydraulic turbine preparation method |
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| CN109676148A (en) * | 2019-01-28 | 2019-04-26 | 深圳微纳增材技术有限公司 | The preparation facilities of 3D printing metal powder |
| CN109676148B (en) * | 2019-01-28 | 2023-12-19 | 深圳微纳增材技术有限公司 | Preparation facilities of metal powder for 3D printing |
| CN115026296A (en) * | 2022-06-13 | 2022-09-09 | 广东银纳科技有限公司 | Medical-grade tantalum powder for additive manufacturing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106493379B (en) | 2018-02-27 |
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Denomination of invention: 3D printing powder manufacturing device and use method thereof Effective date of registration: 20180601 Granted publication date: 20180227 Pledgee: Guangdong Nanhai Rural Commercial Bank branch branch of Limited by Share Ltd Pledgor: Foshan City Jin new Mstar Technology Ltd Registration number: 2018440000140 |