CN106424731A - Selective laser melting-forming equipment and powder supply method thereof - Google Patents
Selective laser melting-forming equipment and powder supply method thereof Download PDFInfo
- Publication number
- CN106424731A CN106424731A CN201610964926.1A CN201610964926A CN106424731A CN 106424731 A CN106424731 A CN 106424731A CN 201610964926 A CN201610964926 A CN 201610964926A CN 106424731 A CN106424731 A CN 106424731A
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- Prior art keywords
- powder
- cabin
- valve
- selective laser
- pressure
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
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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
-
- 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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- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides selective laser melting-forming equipment which comprises a forming cabin and a powder supply device. The forming cabin is arranged below the powder supply device which comprises a powder supply cabin, a control system, an air inlet valve, a cleaning valve, an oxygen sensor, a pressure sensor and a powder outlet switch valve. The air inlet valve and the cleaning valve are separately arranged on the two sides of the powder supply cabin. The oxygen sensor and the pressure sensor are arranged at the top of the powder supply cabin. The powder outlet switch valve is arranged at the bottom of the powder supply cabin. Compared with the prior art, the selective laser melting-forming equipment has the following beneficial effects that 1 powder can be supplied without opening a forming cabin door, the excessive oxygen content in the forming cabin is avoided, and the quality of formed parts is ensured; and 2 the atmosphere in the forming cabin does not need to be cleaned after power supply, the time is greatly saved, and the efficiency is improved.
Description
Technical field
The present invention relates to a kind of selective laser fusing former and its benefit powder method, belong to selective laser forming technique neck
Domain.
Background technology
At present, before selective laser fusing former work, the powder required for formation of parts will be dosed in its material cylinder
End.But because part is excessive, often the powder in material cylinder is not enough to shape part, is so accomplished by selective laser
Powder mended by the material cylinder of fusing former.
Existing main benefit powder method is to open shaping hatch door, and operator use upper shovel, and one shovels ground to material cylinder
Inside dose powder.But such mode just makes formation of parts expose in atmosphere it is impossible to avoid part to aoxidize for a long time,
It cannot be guaranteed that the quality of formation of parts, and after mending powder, cleaning is needed to shape the gas of cabin interior so as to after oxygen content is up to standard
Can start to shape, reduce production efficiency.
Melt former for existing selective laser and mend the shortcoming that during powder, part easily aoxidizes and benefit powder efficiency is low,
Mend powder method using brand-new, when needing to mend powder, be avoided that part occurs problem of oxidation it is ensured that the quality of part forming, carry
High efficiency.
Content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of method improving nickel-aluminum bronze corrosion resistance.
The present invention is achieved by the following technical solutions：
Former is melted in a kind of selective laser, and it includes：Molding cabin and powder complement apparatus, described molding cabin is arranged under benefit powder
Side, described powder complement apparatus include mending powder cabin, control system, intake valve, purge valve, oxygen sensor, pressure transducer and going out powder opening
Close valve, described intake valve and purge valve are respectively arranged at the both sides mending powder cabin, and described oxygen sensor and pressure transducer are respectively provided with
In mend powder cabin top, described go out powder switch valve be arranged at mend powder cabin bottom.
Preferably, described control system respectively with intake valve, oxygen sensor, pressure transducer, purge valve and go out
Powder switch valve electrically connects.
Preferably, it is provided with recovery tank, formation cylinder and material cylinder in described molding cabin, described material cylinder is located at mends powder dress
The underface of the benefit powder cabin put.
A kind of benefit powder method melting former based on aforesaid selective laser, it comprises the steps：
S1：The default pressure mended in powder cabin is 5 ~ 6mbar, and when pressure is more than 6mbar, purge valve automatically opens up, by displacement
Mode makes the oxygen content in benefit powder cabin be always below 1000ppm；
S2：When needing to mend powder, suspend the operation that laser fusion constituency shapes, reduce the height of material cylinder, open discharging switch valve,
Feed powder is made to fall in material cylinder in gravity and in the presence of mending pressure in powder cabin；In the process it is ensured that mending oxygen content control in powder cabin
System does not result in shaping cabin interior oxygen between 5～6mbar it is ensured that during mending powder and contains in below 1000ppm and pressure
Amount exceeded it is ensured that formation of parts will not aoxidize, thus ensureing the quality of formation of parts；
S3：After benefit powder terminates, close out powder switch valve, in the case of guaranteeing that the oxygen content shaping cabin is not exceeded, proceed
The operation that laser fusion constituency shapes；Pneumatic on-off valve is closed by control system, does not have due to shaping cabin interior oxygen content
Exceeded, selective laser fusing former can be started working at once, save the time, improve production efficiency；
Use if once mending powder and being insufficient for shaping, said process can be repeated, continue to mend powder.
Compared with prior art, the present invention has following beneficial effect：
1st, achieve be not turned on shape hatch door situation, you can mend powder, shaping cabin interior oxygen content will not be made exceeded it is ensured that
The quality of formation of parts；
2nd, it is not necessary to cleaning shapes the atmosphere of cabin interior after mending powder, eliminate the plenty of time, improve efficiency.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the selective laser fusing former of the present invention；
In figure：1st, molding cabin；11st, recovery tank；12nd, moulding cylinder；13rd, expect cylinder；14th, inert gas entrance；15th, auxiliary powder system；2、
Mend powder cabin；21st, intake valve；22nd, oxygen sensor；23rd, pressure transducer；24th, purge valve；25th, go out powder switch valve；26th, control system
System；3rd, protective glass；4th, laser instrument；5th, beam expanding lens；6th, scanning system.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
The structure of former is melted as shown in figure 1, including in a kind of selective laser of the present invention：Molding cabin 1 and benefit powder dress
Put, described molding cabin 1 is arranged at the lower section of powder complement apparatus, powder complement apparatus include mending powder cabin 2, control system 26, intake valve 21, clear
Wash valve 24, oxygen sensor 22, pressure transducer 23 and go out powder switch valve 25, intake valve 21 and purge valve 24 are respectively arranged at benefit powder
The both sides in storehouse 2, oxygen sensor and 22 pressure transducers 23 may be contained within mending the top of powder cabin 2, go out powder switch valve 25 and are arranged at benefit
The bottom of powder cabin 2.
Control system 26 respectively with intake valve 21, oxygen sensor 22, pressure transducer 23, purge valve 24 and go out powder switch valve
25 electrical connections.
It is provided with recovery tank 11, formation cylinder 12 and material cylinder 13, material cylinder 13 is located at the benefit powder cabin 2 of powder complement apparatus in molding cabin 1
Underface.
In addition, protective glass 3, laser instrument 4, beam expanding lens 5 and scanning system 6 are also included in the present invention, protective glass 3 is arranged
In the surface of moulding cylinder 12, scanning system 6 is arranged at the surface of protective glass 3, and beam expanding lens 5 is arranged at laser instrument 4 and scanning
Between system 6.
A kind of benefit powder method melting former based on aforesaid selective laser, it comprises the steps：
S1：The default pressure mended in powder cabin is 5 ~ 6mbar, and when pressure is more than 6mbar, purge valve automatically opens up, by displacement
Mode makes the oxygen content in benefit powder cabin be always below 1000ppm；
S2：When needing to mend powder, suspend the operation that laser fusion constituency shapes, reduce the height of material cylinder, open discharging switch valve,
Feed powder is made to fall in material cylinder in gravity and in the presence of mending pressure in powder cabin；
S3：After benefit powder terminates, close out powder switch valve, in the case of guaranteeing that the oxygen content shaping cabin is not exceeded, proceed
The operation that laser fusion constituency shapes.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned specific
Embodiment, those skilled in the art can make various modifications or modification within the scope of the claims, and this has no effect on this
The flesh and blood of invention.
Claims (4)
1. a kind of selective laser fusing former is it is characterised in that include：Molding cabin and powder complement apparatus, described molding cabin sets
It is placed in the lower section mending powder, described powder complement apparatus include mending powder cabin, control system, intake valve, purge valve, oxygen sensor, pressure biography
Sensor is respectively arranged at, with going out powder switch valve, described intake valve and purge valve, both sides, described oxygen sensor and the pressure mending powder cabin
Sensor may be contained within mend powder cabin top, described go out powder switch valve be arranged at mend powder cabin bottom.
2. selective laser as claimed in claim 1 fusing former it is characterised in that described control system respectively with air inlet
Valve, oxygen sensor, pressure transducer, purge valve and go out powder switch valve electrical connection.
3. fusing former in selective laser as claimed in claim 1 is it is characterised in that be provided with recovery in described molding cabin
Cylinder, formation cylinder and material cylinder, described material cylinder is located at the underface of the benefit powder cabin of powder complement apparatus.
4. a kind of selective laser based on described in claim 1 melt former benefit powder method it is characterised in that include as
Lower step：
S1：The default pressure mended in powder cabin is 5 ~ 6mbar, and when pressure is more than 6mbar, purge valve automatically opens up, by displacement
Mode makes the oxygen content in benefit powder cabin be always below 1000ppm；
S2：When needing to mend powder, suspend the operation that laser fusion constituency shapes, reduce the height of material cylinder, open discharging switch valve,
Feed powder is made to fall in material cylinder in gravity and in the presence of mending pressure in powder cabin；
S3：After benefit powder terminates, close out powder switch valve, in the case of guaranteeing that the oxygen content shaping cabin is not exceeded, proceed
The operation that laser fusion constituency shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964926.1A CN106424731A (en) | 2016-10-31 | 2016-10-31 | Selective laser melting-forming equipment and powder supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964926.1A CN106424731A (en) | 2016-10-31 | 2016-10-31 | Selective laser melting-forming equipment and powder supply method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106424731A true CN106424731A (en) | 2017-02-22 |
Family
ID=58180436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610964926.1A Pending CN106424731A (en) | 2016-10-31 | 2016-10-31 | Selective laser melting-forming equipment and powder supply method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106424731A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583722A (en) * | 2016-12-13 | 2017-04-26 | 南通金源智能技术有限公司 | Selective laser melting forming device |
| CN110076991A (en) * | 2019-04-30 | 2019-08-02 | 中国航空制造技术研究院 | The powder feeding equipment and powder delivery method of selective laser fusing forming |
| CN112756633A (en) * | 2020-12-26 | 2021-05-07 | 南京中科煜宸激光技术有限公司 | Powder supplementing and spreading control system for large-size laser selective melting equipment |
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| US20070196561A1 (en) * | 2005-04-06 | 2007-08-23 | Jochen Philippi | Apparatus and method for the manufacture of a three- dimensional object |
| CN201300207Y (en) * | 2008-10-30 | 2009-09-02 | 华中科技大学 | Selective laser melting rapid molding device for metal parts |
| JP2011006719A (en) * | 2009-06-23 | 2011-01-13 | Panasonic Electric Works Co Ltd | Method for producing three-dimensionally-shaped molding and production device for the same |
| CN203409251U (en) * | 2013-09-05 | 2014-01-29 | 哈尔滨师范大学 | Automatic powder supplementing and feeding device for selective laser sintering equipment |
| CN105234409A (en) * | 2015-10-27 | 2016-01-13 | 上海航天精密机械研究所 | Powder feeding method and device for multi-material selective laser melting integral forming |
| CN105945282A (en) * | 2016-05-23 | 2016-09-21 | 苏州云植医学技术有限公司 | Special selective laser melting equipment for directly manufacturing metal orthopedic implant |
-
2016
- 2016-10-31 CN CN201610964926.1A patent/CN106424731A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070196561A1 (en) * | 2005-04-06 | 2007-08-23 | Jochen Philippi | Apparatus and method for the manufacture of a three- dimensional object |
| CN201300207Y (en) * | 2008-10-30 | 2009-09-02 | 华中科技大学 | Selective laser melting rapid molding device for metal parts |
| JP2011006719A (en) * | 2009-06-23 | 2011-01-13 | Panasonic Electric Works Co Ltd | Method for producing three-dimensionally-shaped molding and production device for the same |
| CN203409251U (en) * | 2013-09-05 | 2014-01-29 | 哈尔滨师范大学 | Automatic powder supplementing and feeding device for selective laser sintering equipment |
| CN105234409A (en) * | 2015-10-27 | 2016-01-13 | 上海航天精密机械研究所 | Powder feeding method and device for multi-material selective laser melting integral forming |
| CN105945282A (en) * | 2016-05-23 | 2016-09-21 | 苏州云植医学技术有限公司 | Special selective laser melting equipment for directly manufacturing metal orthopedic implant |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583722A (en) * | 2016-12-13 | 2017-04-26 | 南通金源智能技术有限公司 | Selective laser melting forming device |
| CN110076991A (en) * | 2019-04-30 | 2019-08-02 | 中国航空制造技术研究院 | The powder feeding equipment and powder delivery method of selective laser fusing forming |
| CN112756633A (en) * | 2020-12-26 | 2021-05-07 | 南京中科煜宸激光技术有限公司 | Powder supplementing and spreading control system for large-size laser selective melting equipment |
| CN112756633B (en) * | 2020-12-26 | 2023-02-03 | 南京中科煜宸激光技术有限公司 | Powder supplementing and spreading control system for large-size laser selective melting equipment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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| WD01 | Invention patent application deemed withdrawn after publication |