CN106925787B - Aluminum alloy arc auxiliary coating additive manufacturing system and method - Google Patents
Aluminum alloy arc auxiliary coating additive manufacturing system and method Download PDFInfo
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- CN106925787B CN106925787B CN201710203286.7A CN201710203286A CN106925787B CN 106925787 B CN106925787 B CN 106925787B CN 201710203286 A CN201710203286 A CN 201710203286A CN 106925787 B CN106925787 B CN 106925787B
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- solenoid valve
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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
- 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
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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
- 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
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- 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
- B33Y10/00—Processes of additive manufacturing
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- 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
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses an aluminum alloy electric arc auxiliary coating additive manufacturing system and method. A crucible is fixed to a closed glove box, a three-dimensional moving platform, a substrate and an electric arc heat source are all located in the closed glove box, the substrate is located on the three-dimensional moving platform, the upper end of a coating head communicates with a bottom outlet of the crucible, the lower end of the coating head is inserted into the closed glove box and right faces the substrate, the electric arc heat source is fixed to the top of the closed glove box and right faces the substrate, an induction coil is wound on the outer wall of the crucible and connected with a power source, a crucible cover is arranged at a top opening of the crucible, a first gas supply system communicates with the closed glove box, a second gas supply system communicates with the crucible, the output end of a controller is connected with the control end of the power source, and the first gas supply system and the second gas supply system are connected with the controller. According to the system and method, aluminum alloy workpieces with good quality can be prepared through 3D printing, the preparation cost is low, and the efficiency is high.
Description
Technical field
The invention belongs to 3D printing technique field, it is related to a kind of aluminium alloy electric arc assisted coating increasing material manufacturing system and side
Method.
Background technique
Increasing material manufacturing (additive manufacturing, AM) technology be in recent years by manufacturing technology, information technology and
New material technology fusion is into a kind of novel manufacturing technology, due to its special molding mode and wide application prospect, quilt
It is described as the representative art for being expected to generate " the third time industrial revolution ".The technology does not need the cutter of traditional processing, fixture and more
Road processing program has the advantages that flexible, forming speed is fast and forming is unrelated with part complexity, due to its technique
Particularity, manufacture short distance may be implemented in increasing material manufacturing, and pushes high-volume manufacturing mode to individual character manufacturing Mode change.
Different metal 3D printing increases material manufacturing technologies has the characteristics that respective different and classification method, not according to moulding material
The moulding process of synsedimentary state, metalwork mainly has: selective laser sintering (Selected Laser Sintering,
SLS) technology, precinct laser fusion (Selective Laser Melting, SLM) technology, laser cladding deposit (Laser
Cladding Deposition, LCD) technology, 3 D-printing (3D Printing, 3DP) technology, electron beam melting
(Electron Beam Melting, EBM) technology, three-dimensional microwelding (3D Micro Welding, 3DMW) forming technique, gold
Belong to molten drop deposition technique (MMSDD).Wherein Selective Laser Sintering, selective laser melting process and laser cladding deposit skill
Art all uses superpower laser, although its forming accuracy is higher, its equipment development is with high costs, if forming accuracy
It needs to further increase, must just break through the limitation of raw material powder diameter, when diameier is less than 30um, it is difficult to routine
Grinding method preparation, and the powder body material higher cost of the techniques such as discharging explosion method, chemical reduction method preparation, and these are small
Oxidation reaction easily occurs during transport and storage and even explodes for active material powder, and there is very big risks；Activity
For powder body material to laser reflectivity up to 40%~90%, energy utilization rate is lower.Therefore, using laser-powder deposited metal
There are also to be improved for the method for product.Although wherein electron beam melting energy density is big, power is big, forming efficiency is high, its at
Shape part precision is low, and size is limited.Three-dimensional printing technology, although three-dimensional microbonding connection technology and three-dimensional printing technology equipment cost
It is low, but the intensity of its formation of parts and precision are difficult to meet industrial application.
Aluminium, which closes workpiece, that density is small, specific strength is high, good corrosion resistance, the series of advantages such as at low cost, in weapon industry, core
Industry, aviation, automobile, space flight and ship have very extensive application prospect, therefore aluminium alloy technology is listed in science and techniques of defence
The basic technology given priority to.The use of aluminium alloy industrially simultaneously is only second to steel, in answering for field of aerospace aluminium alloy
With having reached 80%.
Although aluminium alloy has a wide range of application in national economy, current research of the aluminium alloy in increases material manufacturing technology
Seldom.Aluminium alloy easily aoxidizes in air first, and oxidation product aluminum oxide fusing point is very high (about 20500C), in gold
It will lead to Coating combination in category 3D printing and gap occur, secondly aluminium alloy easily generates stomata in metal increasing material manufacturing, generates
The reason of stomata is hydrogen, since liquid aluminium can dissolve a large amount of hydrogen, and solid aluminum hardly dissolved hydrogen, it is solidifying
Hydrogen has little time to escape in the process, and stomata will be generated in drip molding, so as to cause the second-rate of Al alloy parts, third,
Aluminium alloy is higher to the reflectivity of laser, very low to the absorptivity of laser energy, causes aluminium alloy using laser as heat source
Research encounters very big obstruction in metal increases material manufacturing technology, so that the preferable aluminium alloy of mass cannot be prepared by 3D printing
Workpiece.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of aluminium alloy electric arc assisted coating increasing is provided
Material manufacture system and method, which can prepare the preferable Al alloy parts of quality by 3D printing, and prepare
It is at low cost, it is high-efficient.
In order to achieve the above objectives, aluminium alloy electric arc assisted coating increasing material manufacturing system of the present invention includes closing gloves
Case, three-dimensional mobile platform, substrate, crucible, coating head, electric arc heat source, power supply, the first air supply system, the second air supply system and control
Device processed；
Crucible is fixed on closing glove box, and three-dimensional mobile platform, substrate and electric arc heat source are respectively positioned in closing glove box,
Substrate is located in three-dimensional mobile platform, and the upper end for coating head is connected with the outlet at bottom of crucible, and the lower end for coating head is inserted in
It closes in glove box and face substrate, electric arc heat source is fixed on the top of closing glove box and face substrate, on the outer wall of crucible
Be wound with induction coil, induction coil is controlled to a power supply, and the top open part of crucible is equipped with crucible cover, the first air supply system with
Closing glove box is connected, and the second air supply system is connected with crucible, and the output end of controller is connected with the control terminal of power supply,
First air supply system and the second air supply system are connected with controller.
First air supply system includes vacuum pump, argon tanks and the first solenoid valve, wherein vacuum pump and closing glove box
It is connected, the gas outlet of argon tanks is connected by the first solenoid valve with closing glove box, and controller is connected with the first solenoid valve
It connects.
Second air supply system includes second solenoid valve, third solenoid valve and the pressure for detecting air pressure in crucible
The gas outlet of table, argon tanks is connected by second solenoid valve with the air intake of crucible, the gas outlet of third solenoid valve and crucible
It is connected, the output end of pressure gauge is connected with the input terminal of controller, the output end of controller and the control of second solenoid valve
The control terminal of end and third solenoid valve is connected.
The output end of pressure gauge is successively connected through charge amplifier and converter with the input terminal of controller；Controller is logical
Cross the control of the control terminal of converter and solid-state relay and the first solenoid valve, the control terminal of second solenoid valve and third solenoid valve
End is connected.
Further include that raw material of aluminum alloy is added in crucible by the first temperature sensor when in use, passes through induction coil
The raw material of aluminum alloy is heated to molten condition, it is former to detect aluminium alloy under the molten condition by the first temperature sensor
The temperature information of material, the output end of the first temperature sensor are connected with the input terminal of controller.
Further include the second temperature sensor for detecting substrate temperature, wherein the output end of second temperature sensor with
The input terminal of controller is connected, and the output end of controller is connected with the control terminal of electric arc heat source.
It is connected between controller and three-dimensional mobile platform by admittedly high control card.
Aluminium alloy electric arc assisted coating increasing material manufacturing method of the present invention the following steps are included:
1) threedimensional model of workpiece to be manufactured is drawn, then the threedimensional model of workpiece to be manufactured is input in controller；
2) raw material of aluminum alloy is added in crucible, controller controls power supply, by induction coil to the aluminium in crucible
Alloy raw material is heated, and the raw material of aluminum alloy in crucible is made to be heated to molten condition, the first gas supply of controller control system
System and the work of the second air supply system replace the air in closing glove box by the first air supply system, pass through the second air supply system
It is filled with inert gas into crucible, makes the raw material of aluminum alloy of molten condition under the driving of inert gas from the stream in coating head
Road flows continually out；The electric arc heat source work of controller control simultaneously, forms micro- molten bath by electric arc heat source on substrate, coats in head
The raw material of aluminum alloy of the molten condition of runner outflow is fallen in micro- molten bath；Meanwhile controller is according to the three of workpiece to be manufactured
Dimension module drives substrate motion by three-dimensional mobile platform, so that workpiece needed for coating out on substrate, completes aluminium alloy electric arc
The manufacture of assisted coating increasing material.
The material of crucible and coating head is graphite, and the diameter for coating runner in head is 2-4mm.
Horizontal distance between electric arc heat source and the center line for coating head is 5mm.
The invention has the following advantages:
Aluminium alloy electric arc assisted coating increasing material manufacturing system and method for the present invention when specific operation, first draw to
The threedimensional model of workpiece to be manufactured, is then input in controller, by induction coil to aluminium by the threedimensional model for manufacturing workpiece
Alloy raw material is heated, and controller controls the second air supply system and pours inert gas into crucible, to make molten condition
Raw material of aluminum alloy flowed continually out from coating head, while the present invention forms micro- molten bath by electric arc heat source on substrate, applies
The raw material of aluminum alloy for covering the molten condition of head outflow is fallen in fusion pool, so that workpiece interlayer junction be avoided to stitch
Gap.In addition, it is necessary to which explanation, the present invention heat aluminium alloy by electric arc heat source and induction coil, laser is avoided to make
The problem of bringing for heat source reduces the cost of preparation.In addition, being replaced and being closed by the first air supply system during 3D printing
Air in glove box, to effectively improve the quality of Al alloy parts.During 3D printing, the aluminium alloy of molten condition
It is flowed continually out under the driving of inert gas from the runner in coating head, to effectively improve the preparation effect of Al alloy parts
Rate.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 it is vacuum pump, 2 be closing glove box, 3 be argon tanks, 4 be the first solenoid valve, 5 be pressure gauge, 6 is the
Two solenoid valves, 7 be induction coil, 8 be crucible cover, 9 be crucible, 10 be electric arc heat source, 11 be third solenoid valve, 12 be first temperature
Degree sensor, 13 be charge amplifier, 14 be solid-state relay, 15 be converter, 16 be controller, 17 be to coat head, 18 be
Gu high control card, 19 be three-dimensional mobile platform, 20 be substrate.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, aluminium alloy electric arc assisted coating increasing material manufacturing system of the present invention includes closing glove box 2, three
Tie up mobile platform 19, substrate 20, crucible 9, coating head 17, electric arc heat source 10, power supply, the first air supply system, the second air supply system
And controller 16；Crucible 9 is fixed on closing glove box 2, and three-dimensional mobile platform 19, substrate 20 and electric arc heat source 10 are respectively positioned on envelope
It closing in glove box 2, substrate 20 is located in three-dimensional mobile platform 19, and the upper end of coating head 17 is connected with the outlet at bottom of crucible 9,
The lower end of coating head 17 is inserted in closing glove box 2 and face substrate 20, electric arc heat source 10 are fixed on the top of closing glove box 2
Portion and face substrate 20 are wound with induction coil 7 on the outer wall of crucible 9, and induction coil 7 is controlled to a power supply, the top of crucible 9
Opening is equipped with crucible cover 8, and the first air supply system is connected with closing glove box 2, and the second air supply system is connected with crucible 9,
The output end of controller 16 is connected with the control terminal of power supply, and the first air supply system and the second air supply system are connected with controller 16
It connects.
First air supply system includes vacuum pump 1, argon tanks 3 and the first solenoid valve 4, wherein vacuum pump 1 and closing hand
Casing 2 is connected, and the gas outlet of argon tanks 3 is connected by the first solenoid valve 4 with closing glove box 2, controller 16 and first
Solenoid valve 4 is connected.
Second air supply system includes second solenoid valve 6, third solenoid valve 11 and for detecting air pressure in crucible 9
The gas outlet of pressure gauge 5, argon tanks 3 is connected by second solenoid valve 6 with the air intake of crucible 9, third solenoid valve 11 and earthenware
The gas outlet of crucible 9 is connected, and the output end of pressure gauge 5 is connected with the input terminal of controller 16, the output end of controller 16 with
The control terminal of second solenoid valve 6 and the control terminal of third solenoid valve 11 are connected.
The output end of pressure gauge 5 is successively connected through charge amplifier 13 and converter 15 with the input terminal of controller 16；
Controller 16 by the control terminal of converter 15 and solid-state relay 14 and the first solenoid valve 4, the control terminal of second solenoid valve 6 and
The control terminal of third solenoid valve 11 is connected；It is connected between controller 16 and three-dimensional mobile platform 19 by admittedly high control card 18
It connects.
The invention also includes the first temperature sensors 12, and when in use, raw material of aluminum alloy is added in crucible 9, lead to
It crosses induction coil 7 and the raw material of aluminum alloy is heated to molten condition, the melting is detected by the first temperature sensor 12
The output end of the temperature information of raw material of aluminum alloy under state, the first temperature sensor 12 is connected with the input terminal of controller 16
It connects；The invention also includes the second temperature sensors for detecting 20 temperature of substrate, wherein the output end of second temperature sensor
It is connected with the input terminal of controller 16, the output end of controller 16 is connected with the control terminal of electric arc heat source 10.
Aluminium alloy electric arc assisted coating increasing material manufacturing method of the present invention the following steps are included:
1) threedimensional model of workpiece to be manufactured is drawn, then the threedimensional model of workpiece to be manufactured is input in controller 16；
2) raw material of aluminum alloy is added in crucible 9, controller 16 controls power supply, by induction coil 7 in crucible 9
Raw material of aluminum alloy heated, so that the raw material of aluminum alloy in crucible 9 is heated to molten condition, the control of controller 16 first
Air supply system and the work of the second air supply system are replaced the air in closing glove box 2 by the first air supply system, are supplied by second
Gas system is filled with inert gas into crucible 9, makes the raw material of aluminum alloy of molten condition under the driving of inert gas from coating
Runner in first 17 flows continually out；Controller 16 controls electric arc heat source 10 and works simultaneously, on the base plate 20 by electric arc heat source 10
Micro- molten bath is formed, the raw material of aluminum alloy for coating the molten condition of runner outflow in head 17 is fallen in micro- molten bath；Meanwhile it controlling
Device 16 drives substrate 20 to move according to the threedimensional model of workpiece to be manufactured by three-dimensional mobile platform 19, to apply on the base plate 20
Workpiece needed for covering out completes the manufacture that aluminium alloy electric arc assisted coating increases material.
The material of crucible 9 and coating head 17 is graphite, and the diameter for coating runner in head 17 is 2-4mm；Electric arc heat source 10
Horizontal distance between the center line of coating head 17 is 5mm.
The pressure information of gas in crucible 9 is detected by pressure gauge 5, and the pressure information of gas in crucible 9 is sent to
In controller 16, controller 16 is according to the flow control second solenoid valve 6 and third solenoid valve of aluminium alloy under default molten condition
The pressure of gas in 11 adjustment crucibles 9, to control the flow velocity of raw material of aluminum alloy under molten condition.It is controlled by controller 16
First solenoid valve 4 is opened, and the argon gas in argon tanks 3 enters in closing glove box 2 through the first solenoid valve 4, so that hand will be closed
Air displacement in casing 2 comes out, and then effectively improves the quality of the Al alloy parts printed.Meanwhile passing through air
Displacement guarantees that oxygen content and water content are in 50ppm or less in closing glove box 2.
So that induction coil 7 is passed through high-frequency current by power supply, and realizes that aluminium alloy is former under the principle of electromagnetic induction heat
The heating melting of material.
Claims (9)
1. a kind of aluminium alloy electric arc assisted coating increasing material manufacturing method, which is characterized in that increased based on aluminium alloy electric arc assisted coating
Material manufacture system, aluminium alloy electric arc assisted coating increasing material manufacturing system, including closing glove box (2), three-dimensional mobile platform (19),
Substrate (20), crucible (9), coating head (17), electric arc heat source (10), power supply, the first air supply system, the second air supply system and control
Device (16)；
Crucible (9) is fixed in closing glove box (2), three-dimensional mobile platform (19), substrate (20) and electric arc heat source (10) equal position
In in closing glove box (2), substrate (20) is located on three-dimensional mobile platform (19), coats the upper end and crucible (9) of head (17)
Outlet at bottom is connected, and the lower end of coating head (17) is inserted in closing glove box (2) and face substrate (20), electric arc heat source
(10) it is fixed on the top of closing glove box (2) and face substrate (20), is wound with induction coil (7) on the outer wall of crucible (9),
Induction coil (7) is controlled to a power supply, and the top open part of crucible (9) is equipped with crucible cover (8), the first air supply system and closing hand
Casing (2) is connected, and the second air supply system is connected with crucible (9), the control terminal phase of the output end and power supply of controller (16)
Connection, the first air supply system and the second air supply system are connected with controller (16)；
The following steps are included:
1) threedimensional model of workpiece to be manufactured is drawn, then the threedimensional model of workpiece to be manufactured is input in controller (16)；
2) raw material of aluminum alloy is added in crucible (9), controller (16) controls power supply, by induction coil (7) to crucible
(9) raw material of aluminum alloy in is heated, and the raw material of aluminum alloy in crucible (9) is made to be heated to molten condition, controller
(16) the first air supply system and the work of the second air supply system are controlled, is replaced in closing glove box (2) by the first air supply system
Air is filled with inert gas in crucible (9) by the second air supply system, makes the raw material of aluminum alloy of molten condition in indifferent gas
It is flowed continually out under the driving of body from the runner in coating head (17)；Controller (16) control electric arc heat source (10) work simultaneously is led to
It crosses electric arc heat source (10) and forms micro- molten bath on substrate (20), the aluminium alloy of the molten condition of runner outflow is former in coating head (17)
Material is fallen in micro- molten bath；Meanwhile controller (16) passes through three-dimensional mobile platform according to the threedimensional model of workpiece to be manufactured
(19) substrate (20) movement is driven, so that workpiece needed for coating out on substrate (20), completes aluminium alloy electric arc assisted coating and increase
The manufacture of material.
2. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 1, which is characterized in that described first supplies
Gas system includes vacuum pump (1), argon tanks (3) and the first solenoid valve (4), wherein vacuum pump (1) and closing glove box (2) phase
The gas outlet of connection, argon tanks (3) is connected by the first solenoid valve (4) with closing glove box (2), controller (16) and first
Solenoid valve (4) is connected.
3. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 2, which is characterized in that described second supplies
Gas system includes second solenoid valve (6), third solenoid valve (11) and the pressure gauge (5) for detecting crucible (9) interior air pressure, argon
The gas outlet of gas tank (3) is connected by second solenoid valve (6) with the air intake of crucible (9), third solenoid valve (11) and crucible
(9) gas outlet is connected, and the output end of pressure gauge (5) is connected with the input terminal of controller (16), controller (16) it is defeated
Outlet is connected with the control terminal of the control terminal of second solenoid valve (6) and third solenoid valve (11).
4. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 3, which is characterized in that pressure gauge (5)
Output end be successively connected through charge amplifier (13) and converter (15) with the input terminal of controller (16)；Controller (16)
By the control terminal of converter (15) and solid-state relay (14) and the first solenoid valve (4), the control terminal of second solenoid valve (6) and
The control terminal of third solenoid valve (11) is connected.
5. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 1, which is characterized in that further include first
Raw material of aluminum alloy is added in crucible (9) by temperature sensor (12) when in use, by induction coil (7) by the aluminium
Alloy raw material is heated to molten condition, detects raw material of aluminum alloy under the molten condition by the first temperature sensor (12)
Temperature information, the output end of the first temperature sensor (12) is connected with the input terminal of controller (16).
6. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 5, which is characterized in that further include being used for
Detect the second temperature sensor of substrate (20) temperature, wherein the output end of second temperature sensor is defeated with controller (16)
Enter end to be connected, the output end of controller (16) is connected with the control terminal of electric arc heat source (10).
7. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 1, which is characterized in that controller (16)
It is connected between three-dimensional mobile platform (19) by admittedly high control card (18).
8. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 1, which is characterized in that crucible (9) with
The material for coating head (17) is graphite, and the diameter of runner is 2-4mm in coating head (17).
9. aluminium alloy electric arc assisted coating increasing material manufacturing method according to claim 1, which is characterized in that electric arc heat source
(10) horizontal distance between the center line of coating head (17) is 5mm.
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| CN107520447A (en) * | 2017-08-28 | 2017-12-29 | 潘涌 | A kind of metal increasing material manufacturing device and method |
| CN110788503B (en) * | 2019-10-25 | 2021-08-13 | 西安交通大学 | Method for forming advanced dissimilar metal composite structure of 45# steel/tin-lead alloy |
| CN113084202B (en) * | 2021-03-18 | 2022-05-20 | 西安交通大学 | Melt flow control device and method for melt coating forming process |
| CN114101711A (en) * | 2021-10-28 | 2022-03-01 | 西安交通大学 | Metal component 3D printing device and method in microgravity environment |
| CN114378312A (en) * | 2021-11-30 | 2022-04-22 | 西安交通大学 | Steel/aluminum structure molten drop deposition composite TIG electric arc additive manufacturing device and method |
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| GB2489493B (en) * | 2011-03-31 | 2013-03-13 | Norsk Titanium Components As | Method and arrangement for building metallic objects by solid freeform fabrication |
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|---|---|---|---|---|
| CN104668564A (en) * | 2015-03-09 | 2015-06-03 | 周红 | 3D (Three-Dimensional) printing equipment and 3D printing shaping method utilizing metal wires as raw material |
| CN105817626A (en) * | 2016-05-19 | 2016-08-03 | 西安交通大学 | Molten coating forming device and method of metal material gradient components |
| CN106077978A (en) * | 2016-06-22 | 2016-11-09 | 沈阳博帅材料科技有限公司 | A kind of plasma arc auxiliary MIG increases the method that material manufactures aluminium alloy structure |
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