CN207447351U - A kind of induction quick metal molten nozzle for 3D metallic print machines - Google Patents
A kind of induction quick metal molten nozzle for 3D metallic print machines Download PDFInfo
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- CN207447351U CN207447351U CN201720370254.1U CN201720370254U CN207447351U CN 207447351 U CN207447351 U CN 207447351U CN 201720370254 U CN201720370254 U CN 201720370254U CN 207447351 U CN207447351 U CN 207447351U
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Abstract
A kind of induction quick metal molten nozzle for 3D metallic print machines, it is made of nozzle (R), crucible (C), heat insulation layer (A), medium-high frequency inverter (P), induction loop (B), cooling device (D), metal to be melted (M) and feed arrangement (S).Induction loop (B) is by heat insulation layer (A) around crucible (C), cooling device (D) provides cooling to induction loop (B) and medium-high frequency inverter (P), medium-high frequency inverter (P) driving induction loop (B), make the metal to be melted (M) in crucible (C) due to electromagnetic induction rapid melting and form metal fluid or liquid (L), metal fluid or liquid (L) pass through nozzle (R) and spray.The 3D metallic prints of high performance-price ratio can be achieved, energy conversion efficiency is high, it is possible to provide higher deposition, smaller oxide layer, higher security, can printing speed, the manufacture of large scale metal component can be carried out.
Description
Technical field
The utility model is related to 3D metallic print technical fields, especially a kind of electromagnetic induction for 3D metallic print machines
The quick metal molten nozzle of formula.
Background technology
Since metal is used for the manufacture of numerous parts and component, metal parts with complex shape is widely used in
Aerospace, naval vessel, automobile, machine, electronics and medicine and other fields, what 3D printing can manufacture that traditional handicraft cannot process answers
Miscellaneous part can greatly reduce the demand to replacement part using 3D metallic prints technology, save storage and related facility
Input cost.Band large-scale metal component includes airframe, aeroengine, air equipment, railcar, rail, hull, ocean
Mast bar, truck, car, command bundle rods for nuclear reactors, oil well casing, electro-hydraulic turbine etc..Micro metal component includes automobile
Engine, gear, bicycle assembly parts, clock and watch, cooker, packaging element, the metal shell etc. of electronic equipment.
It is the important development direction of increasing material manufacturing using 3D printing process forming metal component, there are many printing works at present
Skill can realize the indirect shaping (Indirect Metal Forming, IMF) of metal component or direct forming (Direct Metal
Forming, DMF).The indirect printing-forming of metal is the green part (Green Part) of printing-forming component first, then will be raw
Blank sinters metal component into；The direct printing-forming of metal refers to as metal component (the Deych and that printing obtains
Abenaim, US20150115494；Bai et al., US20150069649；Uetani and Stuber,
US20150125334)。
In the indirect forming technology of metal component, it is necessary to using organic bond, and the ablation of adhesive can generate residual
Object.For example, the ablation of sugar can generate carbonizing matter, it is usually certain carbon granule, this residue will obviously be to molding product formation
Pollution.
In metal component direct forming technique, the heat source that melts metal can be laser beam, electron beam, plasma arc or
Electric heater etc..Heat source and the position of metal material interaction, can be on the metal bisque being laid in advance on substrate, swash
In heating container in the molten bath that light beam or electron beam generate on substrate or outside substrate (Wang Yun Jiangxi etc.《3D printing skill
Art》, publishing house of the Central China University of Science and Technology；Wang Yun Jiangxi etc.《3 D-printing free forming》, China Machine Press).
In the direct printing-forming technique of metal, laser beam melting welding is sintered due to the use of laser, expensive；Electron beam is burnt
It is also very expensive (needing very high vacuum environment) to tie technique, and very power consumption, the size of shaped object can also be subject to cavity
The limitation in space；Plasma arc technique then provides relatively high deposition velocity, but formed precision is low, resolution ratio is low, because it is difficult to
Control metal welding wire makes it be fed into the small liquid cell of institute's divine force that created the universe body.There is also beat for molten metal drop spray deposition technology
There is the problem of hole and corrugated surface on print object.
The metal generated due to the high temperature in Metal Forming Process and in the presence of air with temperature rise is aoxidized
Trend so that 3D printing of the 3D printing of metal technically than other materials has more challenge.Typically, metallic particles
The oxide on surface can hinder the soldering (connection) of metallic particles, this is because oxide (such as alundum (Al2O3), A1203) has
Fusion temperature more higher than corresponding metal (such as aluminium, A1) fusing point.Therefore, during metal molten, oxide is but and unfused.In addition,
The metal powder of unit mass is more expensive than cast metals.The metal powder of fine particle also than bulky grain metal powder more
It is expensive.In order to make particle fusion sintering complete, and final 3D structures is made to obtain enough spatial resolutions, laser sintered, electron beam
The moulding process such as sintering and powder metallurgy need metallic particles tiny enough.In addition, compared with the cast metals of phase homogenous quantities,
The surface area bigger of metal powder, the metal oxidation generated on surface is more serious than cast metals, and this serious oxidation is made
With that may cause to burn, this is breakneck.
Compared to the cast metals of phase homogenous quantities, the metal welding wire in metal arc welding technique is very expensive.The table of metal welding wire
Area is bigger than the cast metals of similary quality.Metal welding wire diameter is smaller, the surface area of unit mass but bigger.It is sufficiently fine
The metal welding wire cross section that can pass through metal welding wire melt completely, and final 3D structures is made to obtain enough spatial discriminations
Rate.Therefore, the oxidation occurred on metal welding wire surface (patent application more serious than the cast metals of unit mass
201510593081.5)。
Metal powder metallurgy technique but takes very much although with very high print speed, since it is desired that prolonged burn
Knot.In addition, metal powder is more more expensive than metal derby and easy oxidation, sintering process is carried out in fireplace, three printed
Dimension dimension of object is also restricted, and this sintering process usually requires for quite a long time.
Obviously, above-mentioned traditional metallic print method, all can not achieve printing speed, can not complete to band large-scale metal structure
The shaping manufacture of part, is unable to popularization and application when expensive.
Therefore, there is an urgent need for a kind of 3D metallic print methods of new high performance-price ratio, its energy conversion efficiency height, it is possible to provide higher
Deposition, smaller oxide layer, higher security, can printing speed, the manufacture of large scale metal component can be carried out.
The content of the invention
In order to which existing 3D metallic prints method is overcome to can not achieve printing speed, can not be completed to band large-scale metal component
Shaping manufacture, the defects of being unable to popularization and application when expensive, the utility model provides a kind of 3D of new high performance-price ratio
Metallic print method, its energy conversion efficiency are high, it is possible to provide higher deposition, smaller oxide layer, higher security, energy
Printing speed can carry out the manufacture of large scale metal component.
Technical solution is used by the utility model solves its technical problem：For the electromagnetic induction of 3D metallic print machines
The quick metal molten nozzle of formula is by nozzle (R), crucible (C), heat insulation layer (A), medium-high frequency inverter (P), induction loop
(B), cooling device (D), metal to be melted (M) and feed arrangement (S) composition.Induction loop (B) passes through heat insulation layer (A) ring
Around crucible (C), cooling device (D) provides cooling, medium-high frequency inversion electricity to induction loop (B) and medium-high frequency inverter (P)
Source (P) driving induction loop (B), make the metal to be melted (M) in crucible (C) due to electromagnetic induction rapid melting and form gold
Belong to fluid or liquid (L), metal fluid or liquid (L) to spray by nozzle (R).As for spray mode, current maturation can be used
Several ways, if piezoelectric type, pneumatic type, electric piston formula etc. are (Wang Yun Jiangxi etc.《3D printing technique》, the Central China University of Science and Technology goes out
Version society), details are not described herein.As a result of the method similar with inkjet printing, thus it is cheap, it is possible to provide and higher is heavy
Product rate, can also carry out the printing of large scale metal component；Further, since highdensity magnetic force is generated in induction loop (B)
Line, and the metal material held in induction coil is cut, very big vortex is generated in metal material, therefore can rapid melting metal
(such as several seconds), the thermal efficiency is very high, and alloying element scaling loss is few, and fusible any metal, environmental pollution is small, and can accurately control
The temperature and ingredient of preparing metal liquid body or fluid, thus oxide layer is few；In addition, crucible (C) both can be used from electromagnetic induction
The material (such as corundum) for influencing and generating heat, can also be used the material (such as graphite) for being influenced and being generated heat by electromagnetic induction, due to
There is heat insulation layer (A), thus nozzle external skin temperatures are not high, therefore it is safe and reliable.To sum up, the electromagnetism sense for being used for 3D metallic print machines
Answer the quick metal molten nozzle of formula that can realize the 3D metallic prints of high performance-price ratio, energy conversion efficiency is high, it is possible to provide higher is heavy
Product rate, smaller oxide layer, higher security, energy printing speed, can carry out the manufacture of large scale metal component.
The beneficial effects of the utility model are the 3D metallic prints, it can be achieved that high performance-price ratio, and energy conversion efficiency is high, can carry
For higher deposition, smaller oxide layer, higher security, can printing speed, the system of large scale metal component can be carried out
It makes.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the overall connection figure of the utility model, it forms a set of for the induction fast of 3D metallic print machines
Fast metal molten nozzle.
Fig. 2 is the basic circuit structure block diagram of the utility model embodiment.
Fig. 3 is the utility model embodiment circuit diagram.
In figure
R：Nozzle, C：Crucible, A：Heat insulation layer, B：Induction loop, P：Medium-high frequency inverter, D：Cooling device, M：It treats
Melt metal, S：Feed arrangement, L：Metal liquid or fluid are melted；
+V：The operating voltage of medium-high frequency inverter.
Specific embodiment
In Fig. 1, for 3D metallic print machines induction quick metal molten nozzle by nozzle (R), crucible
(C), heat insulation layer (A), medium-high frequency inverter (P), induction loop (B), cooling device (D), metal to be melted (M) and into
Expect that device (S) forms.For induction loop (B) by heat insulation layer (A) around crucible (C), cooling device (D) gives induction loop
(B) and medium-high frequency inverter (P) provides cooling, and medium-high frequency inverter (P) driving induction loop (B) makes in crucible (C)
Metal to be melted (M) due to electromagnetic induction rapid melting and form metal fluid or liquid (L), metal fluid or liquid (L)
It is sprayed by nozzle (R).As for spray mode, the several ways of current maturation can be used, such as piezoelectric type, pneumatic type, electronic work
Plug etc. be (Wang Yun Jiangxi etc.《3D printing technique》, publishing house of the Central China University of Science and Technology), details are not described herein.
In the basic circuit structure block diagram of the utility model embodiment shown in Fig. 2, structure is by medium-high frequency inversion electricity
Source (P) and induction loop (B) are formed by connecting.
In embodiment circuit diagram shown in Fig. 3, two field-effect tube Q1, Q2 and its peripheral cell constitute one
The LC of standard all shakes select frequency oscillation circuit, and resonant frequency f0=1/ [2 π √ (BC1)], the frequency range designed here is
200Hz to 2MHz ,+V power to entire oscillating circuit, and B is both the inductance and induction loop of LC resonance frequency-selecting, it surround
Crucible, to the metal induction heating in crucible, rapid melting metal.It is achieved thereby that the 3D metallic prints of high performance-price ratio, and energy
High conversion efficiency is measured, and higher deposition, smaller oxide layer, higher security can be provided, energy printing speed can carry out
The manufacture of large scale metal component.
Claims (10)
1. a kind of induction quick metal molten nozzle for 3D metallic print machines, it is by nozzle (R), crucible (C), absolutely
Thermosphere (A), medium-high frequency inverter (P), induction loop (B), cooling device (D), metal to be melted (M) and feed arrangement
(S) form, it is characterized in that：For induction loop (B) by heat insulation layer (A) around crucible (C), cooling device (D) gives electromagnetic induction
It encloses (B) and medium-high frequency inverter (P) provides cooling, medium-high frequency inverter (P) driving induction loop (B) makes crucible (C)
Interior metal to be melted (M) due to electromagnetic induction rapid melting and form metal fluid or liquid (L), metal fluid or liquid
(L) sprayed by nozzle (R).
2. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：The frequency range of medium-high frequency inverter (P) driving induction loop (B) is in 200Hz between 2MHz.
3. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：The waveform of medium-high frequency inverter (P) driving induction loop (B) is sine wave.
4. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：The waveform of medium-high frequency inverter (P) driving induction loop (B) is square wave.
5. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Cooling device (D) uses water-cooling pattern.
6. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Cooling device (D) uses air cooling way.
7. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Cooling device (D) uses semiconductor refrigerating mode.
8. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Induction loop (B) uses hollow metal tube, and cooling device (D) Xun Huan water filling is cooled down into the hollow metal tube.
9. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Metal fluid or liquid (L) penetrate into more than one metal to be melted (M) to form alloy.
10. the induction quick metal molten nozzle according to claim 1 for 3D metallic print machines, feature
It is：Metal fluid or liquid (L) penetrate into that relatively lower than the coefficient of thermal expansion of metal to be melted (M) and elasticity modulus is relatively high
Material grains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720370254.1U CN207447351U (en) | 2017-04-05 | 2017-04-05 | A kind of induction quick metal molten nozzle for 3D metallic print machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720370254.1U CN207447351U (en) | 2017-04-05 | 2017-04-05 | A kind of induction quick metal molten nozzle for 3D metallic print machines |
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| CN207447351U true CN207447351U (en) | 2018-06-05 |
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| CN201720370254.1U Expired - Fee Related CN207447351U (en) | 2017-04-05 | 2017-04-05 | A kind of induction quick metal molten nozzle for 3D metallic print machines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825576A (en) * | 2017-04-05 | 2017-06-13 | 曾广兴 | A kind of induction quick metal molten shower nozzle for 3D metallic print machines |
-
2017
- 2017-04-05 CN CN201720370254.1U patent/CN207447351U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825576A (en) * | 2017-04-05 | 2017-06-13 | 曾广兴 | A kind of induction quick metal molten shower nozzle for 3D metallic print machines |
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