CN108176905B - Dusty material selectivity electric spark sintering increasing material manufacturing method and device - Google Patents
Dusty material selectivity electric spark sintering increasing material manufacturing method and device Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 80
- 238000005245 sintering Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000010892 electric spark Methods 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 79
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 230000015271 coagulation Effects 0.000 claims abstract description 4
- 238000005345 coagulation Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 33
- 239000011159 matrix material Substances 0.000 description 20
- 239000002994 raw material Substances 0.000 description 19
- 238000000227 grinding Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000002344 surface layer Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000000110 selective laser sintering Methods 0.000 description 5
- 238000009760 electrical discharge machining Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- 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
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Powder Metallurgy (AREA)
Abstract
For the problem of existing selective sintering apparatus structure complexity, the present invention provides a kind of dusty material selectivity electric spark sintering increasing material manufacturing method and device, belongs to increases material manufacturing technology field.Include: step 1: according to the model to be processed, the determining cross sectional shape being layered and each layer is to be processed；Step 2: evenly laid out one layer of dusty material preheats the powder bed of tiling；Step 3: being arranged tool-electrode above powder bed, adjusts the gap of tool-electrode and powder bed upper surface, and gap being capable of breakdown generation discharge channel under setting voltage effect；Step 4: tool-electrode is scanned it according to the corresponding cross sectional shape of current powder bed, and in the region scanned by tool-electrode, superficial layer dusty material is due to coagulation forming after spark discharge melted by heating or sintering；Repeating step 2 terminates to step 4 until completing all layers of sinter molding.The present invention also provides a kind of device according to the above method, and structure is simple.
Description
Technical field
Selective sintering successively is carried out to dusty material to add up molding using spark discharge the present invention relates to a kind of
Increasing material manufacturing method and device belongs to increasing material manufacturing (Additive Manufacturing, AM) technical field.
Background technique
Increasing material manufacturing (also referred to as 3D printing) is the manufacturing method that material successively adds up, and can quickly obtain arbitrarily complicated knot
Structure, a current manufacturing revolution of being known as, especially obtained development with rapid changepl. never-ending changes and improvements in recent years.It is typical to increase material system
The method of making has: Stereolithography (Stereo Lithography Apparatus, SLA), layer separated growth (Laminated
Object Manufacturing, LOM), selective laser sintering (Selective Laser Sintering, SLS), melting
Deposition Modeling (Fused Deposition Modeling, FDM), three dimensional printing (Three-DimensionPrinting, 3DP)
Deng.These methods because use material, the energy and in terms of have nothing in common with each other due to respectively have feature and purposes.
Wherein, selective laser sintering is selectively to be heated to dusty material using laser as the energy, be allowed to be sintered or be melted
Solidification forms three-dimensional prototype or product after melting.There is selective laser sintering material to select, and extensive, manufacturing process is simple, manufacture essence
The advantages that high is spent, especially because it can process metal parts, thus is considered as most promising increasing material manufacturing skill
One of art.
But selective laser sintering is using laser as the energy, it is at high cost and bulky.Also have using electron beam conduct
The energy is sintered powder, but needs complicated apparatus structure, and equipment volume is huge and use environment is restricted.
Summary of the invention
The problem of apparatus structure that is at high cost the purpose of the present invention is to solve existing selective sintering and needing complexity,
The present invention provides a kind of dusty material selectivity electric spark for realizing that simple, at low cost, controllability is good, device miniaturization can be achieved
It is sintered increasing material manufacturing method and device.
Dusty material selectivity electric spark sintering increasing material manufacturing method of the invention, described method includes following steps:
Step 1: according to the model to be processed, the determining cross sectional shape being layered and each layer is to be processed；
Step 2: evenly laid out one layer of dusty material preheats the powder bed of tiling；
Step 3: being arranged tool-electrode above powder bed, adjusts the gap of tool-electrode and powder bed upper surface, described
Gap under setting voltage effect can breakdown generation discharge channel, and the gap guarantees table on tool-electrode and powder bed
Pulsed discharge is recurred between face；
Step 4: tool-electrode is scanned it according to the corresponding cross sectional shape of current powder bed, by tool-electrode
The region of scanning, superficial layer dusty material are completed described in the layer due to coagulation forming after spark discharge melted by heating or sintering
The sinter molding of cross sectional shape, is transferred to step 2, tiles next layer of dusty material in the powder bed upper surface, until completing institute
There is the sinter molding of layer, terminates.
Preferably, in the step 4, when tool-electrode is scanned, make the surface powder melted by heating at point of discharge
Or sintering is to being bonded together, and can with preceding layer sinter layer it is molded it is powder sintered together.
Preferably, in the step 4, when tool-electrode is scanned, make the powder bed being sintered and its upper surface
The powder bed ground connection not being sintered, keeps zero potential.
Preferably, in the step 4, by setting Single Pulse Discharge energy, discharge frequency, tool-electrode with respect to powder
The scanning speed on last layer surface obtains the molding quality of dusty material electric spark sintering and speed of needs.
Preferably, the dusty material is a kind of conductive powder, the mixing of a variety of conductive powders, conductive powder and bonding
The mixing of agent or ceramic powder material.
Preferably, the method is carried out in inert gas filled closed Processing Room.
A kind of dusty material selectivity electric spark sintering increasing material manufacturing device, described device include powdering preheating roller tube 2, original
Expect chamber 3, raw material cavity bottom plate 4, forming cavity 5, forming cavity bottom plate 6, tool-electrode 8, workbench matrix 10 and the pulse power；
Chamber there are two setting in workbench matrix 10, is respectively as follows: raw material cavity 3 and forming cavity 5, the top of the workbench matrix 10
Face is plane；Raw material cavity bottom plate 4 is arranged in raw material cavity 3, can move up and down；Forming cavity bottom plate 6 is arranged in forming cavity 5, can
It moves up and down；Powdering preheating roller tube 2 is arranged on the top surface of workbench matrix 10；The upper of forming cavity 5 is arranged in tool-electrode 8
The anode in portion, the pulse power is connect with tool-electrode 8, and the cathode and forming cavity bottom plate 6 and workbench matrix 10 of the pulse power are same
When be grounded, forming cavity bottom plate 6 and workbench matrix 10 are conductive material；Powdering preheating roller tube 2 can be by the surface layer in raw material cavity 3
In powder uniform laying to forming cavity 5, and there is pre-add heat effect to powder.
Preferably, described device further includes electrode auto-feed component 7, X-direction infeed mean 11 and Y-direction feeding portion
Part 12；
The tool-electrode 8 is mounted on electrode auto-feed component 7, and electrode auto-feed component 7 controls tool-electrode 8
The distance between 5 top surface of forming cavity；The electrode auto-feed component 7 is Z-direction feeding；
X-direction infeed mean 11, for controlling the X of workbench matrix 10 to feeding；
Y-direction infeed mean 12, the Y-direction for controlling workbench matrix 10 are fed.
Preferably, described device further includes closed Processing Room, the powdering preheating roller tube 2, raw material cavity bottom plate 4, molding
Bottom of chamber plate 6, electrode auto-feed component 7, tool-electrode 8, workbench matrix 10, X-direction infeed mean 11, Y-direction feeding portion
Part 12 and the pulse power are arranged in closed Processing Room 1.
Above-mentioned technical characteristic may be combined in various suitable ways or be substituted by equivalent technical characteristic, as long as can reach
To the purpose of the present invention.
The beneficial effects of the present invention are the present invention proposes to utilize electrical discharge machining (Electrical Discharge
Machining, EDM) in high-energy density discharge channel, convert electrical energy into thermal energy and act on dusty material, benefit
With the thought of layering, solidification is successively cumulative after making the dusty material melting in heat affected zone or being sintered forms three-dimensional prototype or system
Part；The present invention has many advantages, such as to realize that simple, at low cost, controllability is good, device miniaturization can be achieved.The present invention can be used to process
Metal parts, it might even be possible to be used to processing ceramic part, therefore there is very big latency development future；The present invention is by reducing electric discharge
Energy is, it can be achieved that fine increasing material manufacturing；It is also convenient to realize that electric spark sintering increases material system in process by adjustment parameter
It makes and electric spark removes the combination processed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dusty material selectivity electric spark sintering increasing material manufacturing device of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is that dusty material selectivity electric spark sintering increasing material manufacturing device of the invention is realized when being sintered increasing material manufacturing
Flow diagram；
Fig. 4 is dusty material selectivity electric spark sintering shaping work principle explanatory diagram；
Fig. 5 is speeded the electric spark sintering circuit diagram of a formula pulse power based on RC；
Electric spark sintering circuit diagram of the Fig. 6 based on free-standing transistor pulse generator；
Electric spark sintering circuit diagram of the Fig. 7 based on the capacitive coupling pulse power.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
Dusty material selectivity electric spark sintering increasing material manufacturing method described in present embodiment includes the following steps:
Step 1: it according to the three- dimensional CAD shape of the model to be processed, determines the cross-section data after layering is discrete, obtains each
Layer cross sectional shape to be processed；
Step 2: evenly laid out one layer of dusty material is preheated to the temperature that will be melted to the powder bed of tiling；
Step 3: being arranged tool-electrode above powder bed, which has sufficiently small sectional dimension to guarantee
The locality of electric spark sintering；The gap of tool-electrode and powder bed upper surface is adjusted, the gap is under setting voltage effect
Can breakdown generation discharge channel, the pulse power for applying certain voltage amplitude and frequency between tool-electrode and powder bed uses
Discharge channel is generated to puncture contrasted between solid dielectric, optimum distance is kept between tool-electrode and powder layer surface, to be guaranteed at most
Good discharge condition guarantees to recur pulsed discharge between tool-electrode and powder bed upper surface；
Step 4: tool-electrode is scanned it according to the corresponding cross sectional shape of current powder bed, by tool-electrode
The region of scanning, superficial layer dusty material are not scanned due to coagulation forming after spark discharge melted by heating or sintering
Powder be still in it is fluffy, as the support of molded part and next powder bed, complete the sinter molding of this layer of cross sectional shape, turn
Enter step 2, tile next layer of dusty material in the powder bed upper surface, until completing all layers of sinter molding, terminates.
Present embodiment has the discharge channel of high-energy density using electrical discharge machining, converts electrical energy into thermal energy effect
On dusty material, using the thought of layering, keep solidification after dusty material melting or sintering in heat affected zone successively cumulative
Form three-dimensional prototype or product；Present embodiment, which has, realizes simple, at low cost, controllability is good, device miniaturization can be achieved etc.
Advantage.
In preferred embodiment, when tool-electrode is scanned, make surface powder melted by heating at point of discharge or sintering from
And be bonded together, and can with preceding layer sinter layer it is molded it is powder sintered together, guarantee being integrated for sinter molding
Structure.
In preferred embodiment, when tool-electrode is scanned, it is sintered the powder bed being sintered and its upper surface not
Powder bed ground connection, keep zero potential, to guarantee powder without net charge, so that powder be avoided to occur under interpolar electric field action
It disperses.
In preferred embodiment, in the step 4, by the way that Single Pulse Discharge energy, discharge frequency, tool-electrode phase is arranged
To the scanning speed of powder layer surface, the molding quality of dusty material electric spark sintering and speed of needs are obtained.
In preferred embodiment, the dusty material is a kind of conductive powder, the mixing of a variety of conductive powders or conductive powder
Ceramic powder material also can be used if electric spark sintering carries out in kerosene medium with the mixing of binder.
In preferred embodiment, to avoid powder from being oxidized, the method is in inert gas filled closed Processing Room
It carries out.
According to above-mentioned dusty material selectivity electric spark sintering increasing material manufacturing method, present embodiment also provides a kind of powder
Material selectivity electric spark sintering increasing material manufacturing device, as depicted in figs. 1 and 2, including powdering preheating roller tube 2, raw material cavity 3, original
Expect bottom of chamber plate 4, forming cavity 5, forming cavity bottom plate 6, tool-electrode 8, workbench matrix 10 and the pulse power；
Chamber there are two setting in workbench matrix 10, is respectively as follows: raw material cavity 3 and forming cavity 5, the top of the workbench matrix 10
Face is plane；Raw material cavity bottom plate 4 is arranged in raw material cavity 3, can move up and down；Forming cavity bottom plate 6 is arranged in forming cavity 5, can
It moves up and down；Powdering preheating roller tube 2 is arranged on the top surface of workbench matrix 10；The upper of forming cavity 5 is arranged in tool-electrode 8
The anode in portion, the pulse power is connect with tool-electrode 8, and the cathode and forming cavity bottom plate 6 and workbench matrix 10 of the pulse power are same
When be grounded, forming cavity bottom plate 6 and workbench matrix 10 are conductive material.
The powdering preheating roller tube 2 of present embodiment can by the surface layer powder uniform laying to forming cavity 5 in raw material cavity 3,
And there is pre-add heat effect to powder, 5 surface layer powder of forming cavity is heated to the temperature that will be melted；
The device of present embodiment is realizing course of work when being sintered increasing material manufacturing are as follows:
Step 1: as shown in Fig. 3 (A), before processing starts, raw material cavity bottom plate 4 is located at the minimum position of raw material cavity 3, raw material cavity
Dusty material 15 is filled in 3, powder upper surface is concordant with processing plane 9.Forming cavity bottom plate 6 is located at highest position, thereon table
Face is also concordant with processing plane 9.The processing plane 9 of present embodiment is the top surface of workbench matrix 10；
Step 2: as shown in Fig. 3 (B), after processing starts, raw material cavity bottom plate 4 rises one layer of thickness, makes the powder of a thickness
Powder material 15 is emerged.Forming cavity bottom plate 6 declines one layer of thickness.
Step 3: as shown in Fig. 3 (C), the dusty material 15 emerged above raw material cavity 3 is shifted and is tiled by powdering preheating roller tube 2
To forming cavity 5, as bottom lining layer；
Step 4: as shown in Fig. 3 (D), raw material cavity bottom plate 4 rises one layer of thickness again, emits the dusty material 15 of a thickness
Out.Forming cavity bottom plate (6) declines one layer of thickness again.
Step 5: as shown in Fig. 3 (E), the dusty material 15 emerged above raw material cavity 3 is shifted and is tiled by powdering preheating roller tube 2
To forming cavity 5, and it is preheating to the temperature that will be melted.
Step 6: as shown in Fig. 3 (F), tool-electrode 8 carries out selective sintering 16 to current layer powder according to cross sectional shape.
Step 7: as shown in Fig. 3 (G) to (J), repeating step 4 to step 6, until entire model (16) is sintered completion.
Step 8: as shown in Fig. 3 (K), by forming cavity (5) powder (15) and model (16) it is completely out；
Step 9: as shown in Fig. 3 (L), removing excessive powder with brush, obtain final mask (16)；
In Fig. 4, have three layers powder on forming cavity bottom plate 6, is followed successively by powder bottom lining layer 17, sinter layer 18, table from the bottom up
Surface layer 19 (just in sinter layer).It include sinter molding part 16 and unsintered bulky powder material 15 in sinter layer 18.One
The pulse power of constant voltage amplitude and frequency loads between tool-electrode and powder, and breakdown contrasted between solid dielectric generates discharge channel
20.The energy density with higher of discharge channel 20 makes the surface powder melted by heating at point of discharge 21 or sintering to bond
Together, it and can stick together with the powder of sinter molding 16 of preceding layer sinter layer 18.
Any kind of pulse power can be used in the pulse power of present embodiment, such as: RC speed a formula pulse power,
Free-standing transistor pulse generator, or both combination and the various novel pulse powers etc..Fig. 5 is a formula of being speeded based on RC
The electric spark sintering circuit diagram of the pulse power, Fig. 6 are the electric spark sintering circuit diagram based on free-standing transistor pulse generator, figure
7 be the electric spark sintering circuit diagram based on the capacitive coupling pulse power.
In preferred embodiment, present embodiment further includes electrode auto-feed component 7, X-direction infeed mean 11 and Y-direction
Infeed mean 12；
The tool-electrode 8 is mounted on electrode auto-feed component 7, and electrode auto-feed component 7 controls tool-electrode 8
The distance between 5 top surface of forming cavity；The electrode auto-feed component 7 is Z-direction feeding；
X-direction infeed mean 11, for controlling the X of workbench matrix 10 to feeding；
Y-direction infeed mean 12, the Y-direction for controlling workbench matrix 10 are fed.
The tool-electrode 8 of present embodiment in z-direction can be with adjust automatically and surface layer by electrode auto-feed component 7
Gap between powder.Workbench matrix 10 can carry out horizontal movement in the x, y direction with certain kinematic accuracy, to realize
Scanning of the tool-electrode 8 to 5 surface layer powder of forming cavity.
As depicted in figs. 1 and 2, present embodiment further includes pedestal 13 and electrode support 14, and the top of electrode support 14 is used
In installation electrode auto-feed component 7；Bottom end, X-direction infeed mean 11 and the Y-direction infeed mean 12 of electrode support 14 are arranged
On pedestal 13；
In preferred embodiment, present embodiment further includes closed Processing Room 1, the powdering preheating roller tube 2, raw material cavity 3, original
Expect bottom of chamber plate 4, forming cavity 5, forming cavity bottom plate 6, electrode auto-feed component 7, tool-electrode 8, workbench matrix 10, X-direction
Infeed mean 11, Y-direction infeed mean 12 and the pulse power are arranged in closed Processing Room 1, and powder is avoided to be oxidized.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that can be carried out to exemplary embodiment
Many modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims
And range.It should be understood that different appurtenances can be combined by being different from mode described in original claim
Benefit requires and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used
In other described embodiments.
Claims (6)
1. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method, which is characterized in that the method includes walking as follows
It is rapid:
Step 1: according to the model to be processed, the determining cross sectional shape being layered and each layer is to be processed；
Step 2: evenly laid out one layer of dusty material preheats the powder bed of tiling；
Step 3: being arranged tool-electrode above powder bed, adjusts the gap of tool-electrode and powder bed upper surface, the gap
Under setting voltage effect can breakdown generation discharge channel, and the gap guarantee tool-electrode and powder bed upper surface it
Between recur pulsed discharge；
Step 4: tool-electrode is scanned it according to the corresponding cross sectional shape of current powder bed, scans by tool-electrode
Region, superficial layer dusty material due to spark discharge melted by heating or sintering after coagulation forming, complete this layer of section
The sinter molding of shape, is transferred to step 2, tiles next layer of dusty material in the powder bed upper surface, until completing all layers
Sinter molding, terminate.
2. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method according to claim 1, which is characterized in that
In the step 4, when tool-electrode is scanned, make the surface powder melted by heating at point of discharge or sintering to be bonded in
Together, and can with preceding layer sinter layer it is molded it is powder sintered together.
3. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method according to claim 1, which is characterized in that
In the step 4, when tool-electrode is scanned, the powder bed that is sintered the powder bed being sintered and its upper surface not
Ground connection keeps zero potential.
4. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method according to claim 1, which is characterized in that
It is fast with respect to the scanning of powder layer surface by setting Single Pulse Discharge energy, discharge frequency, tool-electrode in the step 4
Degree, obtains the molding quality of dusty material electric spark sintering and speed of needs.
5. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method according to claim 1, which is characterized in that
The dusty material is mixing or the ceramic powder of a kind of conductive powder, the mixing of a variety of conductive powders, conductive powder and binder
Powder material.
6. a kind of dusty material selectivity electric spark sintering increasing material manufacturing method according to claim 1, which is characterized in that
The method is carried out in inert gas filled closed Processing Room.
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| CN110722277B (en) * | 2019-10-29 | 2021-04-02 | 哈尔滨工业大学 | Electric spark melting forming method for laminated solid |
| CN110977102B (en) * | 2019-12-23 | 2021-07-30 | 哈尔滨工业大学 | Light guide electric spark melting forming device and method |
| CN112427650A (en) * | 2020-11-02 | 2021-03-02 | 哈尔滨工业大学 | Fuse deposition metal material increasing/decreasing composite manufacturing method based on discharge plasma |
| CN113020621B (en) * | 2021-02-26 | 2022-10-21 | 南方科技大学 | Additive manufacturing method and device based on discharge |
| CN116328024A (en) * | 2021-12-22 | 2023-06-27 | 湖南理工学院 | Method for compact forming of large-section bone defect implant with low melting point |
| CN115945749A (en) * | 2022-12-31 | 2023-04-11 | 广州市德固制冷设备有限公司 | Metal plate processing system and method |
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| CN106735216A (en) * | 2016-12-30 | 2017-05-31 | 华中科技大学 | The increase and decrease material composite manufacturing equipment and method of a kind of metal parts |
| CN106807945A (en) * | 2015-12-01 | 2017-06-09 | 韩邦伟 | Electric capacity discharge sintering metal 3D printer |
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| CN101147971A (en) * | 2007-11-02 | 2008-03-26 | 深圳大学 | Selective resistance welding melting powder rapid forming method |
| CN204621074U (en) * | 2015-05-13 | 2015-09-09 | 西安科技大学 | A kind of large scale that is applied to increases the two-way automatic power spreading mechanism that material manufactures forming machine |
| CN106807945A (en) * | 2015-12-01 | 2017-06-09 | 韩邦伟 | Electric capacity discharge sintering metal 3D printer |
| CN106735216A (en) * | 2016-12-30 | 2017-05-31 | 华中科技大学 | The increase and decrease material composite manufacturing equipment and method of a kind of metal parts |
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