CN107008906A - A kind of induction quick metal melting appartus for 3D metallic print machines - Google Patents
A kind of induction quick metal melting appartus for 3D metallic print machines Download PDFInfo
- Publication number
- CN107008906A CN107008906A CN201710238119.6A CN201710238119A CN107008906A CN 107008906 A CN107008906 A CN 107008906A CN 201710238119 A CN201710238119 A CN 201710238119A CN 107008906 A CN107008906 A CN 107008906A
- Authority
- CN
- China
- Prior art keywords
- induction
- metal
- container
- melting appartus
- metallic print
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/42—Cooling of coils
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
Abstract
A kind of induction quick metal melting appartus for 3D metallic print machines, it is made up of nozzle (R), container (C), medium-high frequency inverter (P), induction loop (B), cooling device (D) and metal to be melted (M).Induction loop (B) is around container (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 container (C) because of electromagnetic induction rapid melting and form metal fluid or liquid (L), metal fluid or liquid (L) pass through nozzle (R) and sprayed.The 3D metallic prints of high performance-price ratio can be achieved, metal can quickly be directly heated, energy conversion efficiency is high, it is possible to provide higher deposition, less oxide layer, higher security and controllability, energy printing speed, can carry out the manufacture of large scale hardware.
Description
Art
It is especially a kind of for the induction fast of 3D metallic print machines the present invention relates to 3D metallic print technical fields
Fast metal molten device.
Background technology
Because metal is used for the manufacture of numerous parts and component, metal parts with complex shape is widely used in
Aero-Space, naval vessel, automobile, machine, electronics and medicine and other fields, what 3D printing can manufacture that traditional handicraft can not 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, metal shell of electronic equipment etc..
It is the important development direction of increasing material manufacturing using 3D printing process forming hardware, a variety of printing works is had at present
Skill can realize indirect shaping (Indirect Metal Forming, IMF) or direct forming (the Direct Metal of hardware
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 hardware into；The direct printing-forming of metal refers to print obtained as hardware (Deych and
Abenaim, US20150115494；Bai et al., US20150069649；Uetani and Stuber,
US20150125334)。
, it is necessary to using organic bond in the indirect forming technology of hardware, and the ablation of adhesive can produce residual
Thing.For example, the ablation of sugar can produce carbonizing matter, it is usually certain carbon granule, this residue obviously can be to the product formation of shaping
Pollution.
In hardware direct forming technique, the thermal source of fusing metal can be laser beam, electron beam, plasma arc or
Electric heater etc..The position that thermal source interacts with metal material, can be on the metal bisque laid in advance on substrate, swash
In the molten bath that light beam or electron beam are produced on substrate, or in heating container 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 using laser, expensive；Electron beam burns
Tie technique also very expensive (needing very high vacuum environment), and very power consumption, the size of shaped object also can be by die 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.
The metal for raising generation with temperature due to the high temperature in Metal Forming Process and in the presence of air 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, because oxide (such as alundum (Al2O3), Al2O3) has
Than the higher fusion temperature of corresponding metal (such as aluminium, Al) fusing point.Therefore, during metal molten, oxide is but and unfused.In addition,
The metal dust of unit mass is more expensive than cast metals.The metal dust of fine particle also than bulky grain metal dust more
It is expensive.In order that particle fusion sintering is complete, and final 3D structures are made to obtain enough spatial resolutions, laser sintered, electron beam
The moulding process such as sintering and powder metallurgy needs metallic particles tiny enough.In addition, compared with the cast metals of phase homogenous quantities,
The surface area of metal dust is bigger, and the metal oxidation produced on surface is more serious than cast metals, and this serious oxidation is made
With that may cause burning, 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 same quality.Metal welding wire diameter is smaller, and the surface area of its unit mass is 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 obtained enough spatial discriminations
Rate.Therefore, cast metals more serious (Deborah DL of the oxidation occurred on metal welding wire surface than unit mass
Clock, patent application 201510593081.5).
Metal powder metallurgy technique although with very high print speed, but take very much, since it is desired that prolonged burn
Knot.In addition, metal dust is more more expensive than metal derby and easy oxidation, its sintering process is carried out in fireplace, three printed
Dimension dimension of object is also restricted, and this sintering process is usually required for quite a long time.
Electric heater uses resistance heating or electric furnace mode of heating, it is necessary to first be heated to the container of heat conduction at present,
Then the metal in container is delivered heat to by container, so as to be heated to metal, efficiency is low, speed is slow, and the temperature of container is very high,
Environment is have impact on, and it is dangerous.
Obviously, traditional metallic print method such as laser beam, electron beam, plasma arc, can not all realize printing speed,
The manufacture of the shaping to band large-scale metal component can not be completed, popularization and application is unable to because expensive；And electric heater then efficiency it is low,
Speed is slow, and the temperature of container is very high, both have impact on environment, also dangerous.
Therefore, a kind of 3D metallic print methods of new high performance-price ratio are needed badly, it can carry out quickly directly adding to metal
Heat, energy conversion efficiency is high, it is possible to provide higher deposition, less oxide layer, higher security and controllability, can be quick
Printing, can carry out the manufacture of large scale hardware.
The content of the invention
In order to overcome existing 3D metallic prints method to realize printing speed, can not complete to band large-scale metal component
Shaping manufacture or be unable to because expensive popularization and application or because the efficiency of heating surface is low, speed is slow, vessel temp is high, influence ring
Border, the defect of uneasy congruence, the present invention provide a kind of 3D metallic print methods of new high performance-price ratio, and it can carry out fast to metal
Speed is directly heated, and energy conversion efficiency is high, it is possible to provide higher deposition, less oxide layer, higher security and can
Control property, energy printing speed, can carry out the manufacture of large scale hardware.
The technical solution adopted for the present invention to solve the technical problems is：For the induction fast of 3D metallic print machines
Fast metal molten device by nozzle (R), container (C), medium-high frequency inverter (P), induction loop (B), cooling device (D) with
And metal (M) composition to be melted.Induction loop (B) gives induction loop (B) and middle height around container (C), cooling device (D)
Frequency inverter (P) provides cooling, and medium-high frequency inverter (P) driving induction loop (B) makes to be melted in container (C)
Metal (M) because of electromagnetic induction rapid melting and form metal fluid or liquid (L), metal fluid or liquid (L) pass through nozzle
(R) spray., can be using several ways ripe at present, such as piezoelectric type, pneumatic type, electric piston formula (king as spray mode
Transport Jiangxi etc.《3D printing technique》, publishing house of the Central China University of Science and Technology), it will not be repeated here.As a result of with inkjet printing class
As method, it is thus cheap, it is possible to provide higher deposition, can also carry out the printing of large scale hardware；In addition, by
In the highdensity magnetic line of force of generation in induction loop (B), and the metal material held in induction coil is cut, in metal material
Middle generation very big vortex, thus can rapid melting metal (such as several seconds), the thermal efficiency is very high, and alloying element scaling loss is few, fusible
Change any metal, environmental pollution is small, and can accurately control the temperature and composition of metal liquid or fluid, thus oxide layer pole
It is few；In addition, container (C) both can be also used by electromagnetism using the material (such as corundum) for not influenceed and being generated heat by electromagnetic induction
Sensing influence and the material (such as graphite, at this moment the container need to be thermally isolated with heat insulation layer and induction loop) generated heat, because
And entirely induction quick metal melting appartus external skin temperatures are not high therefore safe and reliable.To sum up, this is used for 3D metals and beaten
The induction quick metal melting appartus of print machine can realize the 3D metallic prints of high performance-price ratio, and it can carry out quick to metal
Directly heat, energy conversion efficiency is high, it is possible to provide higher deposition, less oxide layer, higher security and controllable
Property, energy printing speed can carry out the manufacture of large scale hardware.
The beneficial effects of the invention are as follows can be achieved the 3D metallic prints of high performance-price ratio, it can carry out quickly straight to metal
Connect heating, energy conversion efficiency is high, it is possible to provide higher deposition, less oxide layer, higher security and controllability, energy
Printing speed, can carry out the manufacture of large scale hardware.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the overall connection figure of the present invention, and it constitutes a set of induction fast gold for 3D metallic print machines
Belong to melting appartus.
Fig. 2 is the basic circuit structure block diagram of the embodiment of the present invention.
Fig. 3 is circuit theory diagrams of the embodiment of the present invention.
In figure
R：Nozzle, C：Container, B：Induction loop, P：Medium-high frequency inverter, D：Cooling device, M：Metal to be melted,
L：Fusing metal liquid or fluid；+V：The operating voltage of medium-high frequency inverter.
Embodiment
In Fig. 1, the induction quick metal melting appartus for 3D metallic print machines is by nozzle (R), container
(C), medium-high frequency inverter (P), induction loop (B), cooling device (D) and metal to be melted (M) composition.Electromagnetic induction
(B) is enclosed around container (C), cooling device (D) provides cooling, medium-high frequency to induction loop (B) and medium-high frequency inverter (P)
Inverter (P) driving induction loop (B), makes the metal to be melted (M) in container (C) be produced because of electromagnetic induction very big
Vortex, rapid melting and form metal fluid or liquid (L), metal fluid or liquid (L) pass through nozzle (R) and sprayed.As for spray
Go out mode, can be using several ways ripe at present, if piezoelectric type, pneumatic type, electric piston formula etc. are (Wang Yun Jiangxi etc.《3D is beaten
Print technology》, publishing house of the Central China University of Science and Technology), it will not be repeated here.
In the basic circuit structure block diagram of the embodiment of the present invention shown in Fig. 2, its structure is by medium-high frequency inverter (P)
It is formed by connecting with induction loop (B).
In the embodiment circuit theory diagrams shown in Fig. 3, two FETs Q1, Q2 and its peripheral cell (C1, B, L1,
L2, D1-D4, R1-R4) constitute the LC resonant selecting frequency oscillating circuits of a standard, its resonant frequency f0=1/ [2 π √
(BC1) frequency range], designed here is 200Hz to 2MHz, and+V powers to whole oscillating circuit, and B is both LC resonant selecting frequencies
Inductance, is also induction loop, its circular container, to the metal induction heating in container, rapid melting metal.It is achieved thereby that
The 3D metallic prints of high performance-price ratio, it can quickly be directly heated to metal, and energy conversion efficiency is high, it is possible to provide higher
Deposition, less oxide layer, higher security and controllability, energy printing speed, can carry out the system of large scale hardware
Make.
Claims (10)
1. a kind of induction quick metal melting appartus for 3D metallic print machines, it by nozzle (R), container (C), in
High frequency inverter (P), induction loop (B), cooling device (D) and metal to be melted (M) composition, it is characterized in that：Electromagnetism
Induction coil (B) provides cooling around container (C), cooling device (D) to induction loop (B) and medium-high frequency inverter (P), in
High frequency inverter (P) driving induction loop (B), make the metal to be melted (M) in container (C) because of electromagnetic induction fast fast thawing
Change and form metal fluid or liquid (L), metal fluid or liquid (L) are sprayed by nozzle (R).
2. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：The signal of medium-high frequency inverter (P) driving induction loop (B) is frequency range in 200Hz to the sine between 2MHz
Ripple.
3. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：The signal of medium-high frequency inverter (P) driving induction loop (B) is frequency range in 200Hz to the square wave between 2MHz.
4. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Cooling device (D) uses water-cooling pattern.
5. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Cooling device (D) uses air cooling way.
6. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Cooling device (D) uses semiconductor refrigerating mode.
7. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Induction loop (B) uses hollow metal tube, and cooling device (D) circulation water filling is cooled down into the hollow metal tube.
8. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Container (C) is using the material for not influenceed and being generated heat by electromagnetic induction.
9. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：Container (C) is using the material for being influenceed and being generated heat by electromagnetic induction.
10. the induction quick metal melting appartus according to claim 1 for 3D metallic print machines, its feature
It is：When container (C) is using the material for being influenceed and being generated heat by electromagnetic induction, heat insulating material is used between container (C) and induction loop (B)
Material is thermally isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710238119.6A CN107008906A (en) | 2017-04-12 | 2017-04-12 | A kind of induction quick metal melting appartus for 3D metallic print machines |
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| CN201710238119.6A CN107008906A (en) | 2017-04-12 | 2017-04-12 | A kind of induction quick metal melting appartus for 3D metallic print machines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322946A (en) * | 2018-04-18 | 2018-07-24 | 中国工程物理研究院机械制造工艺研究所 | A kind of electrothermal closed-loop heating device |
-
2017
- 2017-04-12 CN CN201710238119.6A patent/CN107008906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322946A (en) * | 2018-04-18 | 2018-07-24 | 中国工程物理研究院机械制造工艺研究所 | A kind of electrothermal closed-loop heating device |
| CN108322946B (en) * | 2018-04-18 | 2024-02-13 | 中国工程物理研究院机械制造工艺研究所 | Electric heating type full-closed loop heating device |
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| PB01 | Publication | ||
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| DD01 | Delivery of document by public notice |
Addressee: Zeng Guangxing Document name: Notification of Publication of the Application for Invention |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zeng Guangxing Document name: Notification of before Expiration of Request of Examination as to Substance |
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Application publication date: 20170804 |