CN109317675A - A kind of pure molybdenum precinct laser fusion preparation method of high-compactness - Google Patents
A kind of pure molybdenum precinct laser fusion preparation method of high-compactness Download PDFInfo
- Publication number
- CN109317675A CN109317675A CN201811355441.8A CN201811355441A CN109317675A CN 109317675 A CN109317675 A CN 109317675A CN 201811355441 A CN201811355441 A CN 201811355441A CN 109317675 A CN109317675 A CN 109317675A
- Authority
- CN
- China
- Prior art keywords
- pure molybdenum
- laser fusion
- precinct laser
- molybdenum
- working chamber
- 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.)
- Pending
Links
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
-
- 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]
-
- 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
-
- 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
- B22F10/36—Process control of energy beam parameters
-
- 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
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
-
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- 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
- 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
- B22F10/73—Recycling of powder
-
- 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
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
-
- 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
- B22F12/40—Radiation means
- B22F12/49—Scanners
-
- 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
- B22F12/60—Planarisation devices; Compression devices
- B22F12/63—Rollers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention provides a kind of pure molybdenum precinct laser fusion preparation method of high-compactness, includes the following steps: to establish molybdenum plate 3D solid numerical model on computers；Set power, scanning speed, sweep span and the scanning mode of laser beam；Carry out 3D printing；Measure the consistency of different molded parts；Select optimal procedure parameters；The present invention can be obtained the pure molybdenum drip molding with higher-density, high surface quality, be avoided traditional machining and post-processing, used manpower and material resources sparingly by the technological parameter of optimization SLM technology, shorten the process-cycle.Using processing technology provided by the invention, the pure molybdenum workpiece prepared has good room-temperature mechanical property, technically has certain theoretical research value and practical application value.
Description
Technical field
The present invention relates to a kind of precinct laser fusion preparation method more particularly to a kind of pure molybdenum precinct laser of high-compactness are molten
Change preparation method, belongs to metal Fast Forming Technique.
Background technique
Selective laser melting process, abbreviation SLM technology are one of the major techniques of metal increasing material manufacturing.SLM forming technique
Based on layering-superposition manufacture thought, metal powder is successively melted using high energy laser beam, is solidified, metal zero is shaped to
Component.SLM technology is identical as the basic thought of other rapid shaping techniques: initially setting up the three-dimensional CAD model of part, then will
Threedimensional model output is STL formatted file, is conducted into 3D printing software for editing, two dimensionization processing is carried out, in short transverse
On model layers are sliced, slice of data includes the profile information and machining path of molded part, and it is molten to be conducted into precinct laser
Change in equipment.It using high energy heat source, is quickly scanned according to computer chip formation and shape track, final molding goes out metal zero
Part.
SLM technological break-through tradition subtracts the constraint of cutter, fixture in material manufacturing method, simplifies the fabrication schedule of product,
The complex parts that conventional method is difficult to mold can be produced.Meanwhile SLM technology substantially increases the production effect of product
Rate shortens the process-cycle, reduces cost, is suitble to the production of part volume.The appearance of 3D printing technique, so that innovation and intention
The conversion of concept to entity may be implemented, SLM technology has been used to the fields such as aerospace, biomedicine, military equipment at present
The manufacture of key components and parts achieves good achievement.But since SLM technology is with complicated physical and chemical metallurgy process,
Formed metal articles are second-rate, are mainly shown as that molded part low density, surface roughness are high.Meanwhile moulding material is wide
General property is also restrained, these factors have seriously affected the popularization and application of SLM technology.
Molybdenum is a kind of rare metal, is non-renewable valuable source, is developing high-tech, realizes modernization of the country
Important foundation material.With the continuous development of science and technology, molybdenum is with its unique mechanical behavior under high temperature and more cheap valence
Lattice are widely used in hot industry field, such as heater, heat screen, thermocouple sheath, high-temperature pump, the high temperature bullet of high temperature furnace
Spring, the combustion gas wheel piece of engine, scramjet combustor, structural material of nuclear reactor etc..The fusing point of metal molybdenum is higher, is
It 2620 DEG C, is not easy to prepare using traditional casting method, generallys use powder metallurgic method.Due to the shaping characteristic of SLM technology, lead to
Technological parameter is overregulated, the fusing, solidification and molding of molybdenum powder may be implemented, therefore prepare pure molybdenum with the method for 3D printing to have
Good application prospect.When preparing pure molybdenum parts using SLM technology, consistency is excited optical power, scanning speed and is swept
The strong influence of spacing is retouched, often molded part contains a large amount of shrinkage cavity and shrinkage porosite, causes the mechanical property of part poor.Therefore,
It is undoubtedly vital to develop a kind of pure molybdenum precinct laser fusion preparation method of high-compactness.
Summary of the invention
A kind of high-compactness is provided the purpose of the invention is to prepare the pure molybdenum drip molding with higher-density
Pure molybdenum precinct laser fusion preparation method.
The object of the present invention is achieved like this:
A kind of pure molybdenum precinct laser fusion preparation method of high-compactness, includes the following steps:
Step 1: establishing molybdenum plate 3D solid numerical model on computers, then by the molybdenum plate 3D solid numerical value
Model changes into STL formatted file input 3D printing software for editing, two dimensionization processing is carried out, in the height direction to model layers
Slice sets scan path and is conducted into precinct laser fusion equipment；
Step 2: power, scanning speed, sweep span and the scanning mode of laser beam, the laser spot diameter are set
It is 75 μm, laser power 325W, scanning speed 400mm/s, sweep span is 60 μm, is scanned using Cross hatching
Mode, 67 ° of layer-by-layer rotary laser scanning direction；
Step 3: forming board being fixed on the workbench of precinct laser fusion equipment, is closed door, is filled after vacuumizing
Enter protective gas；
Step 4: after working chamber's atmosphere prepares, workbench decline, powder storing chamber body rises, and automatic power spreading device utilizes rubber
Scraper is laid with aerosolization spherical shape pure molybdenum powder on forming board；
Step 5: utilizing high energy heat source, quickly scan according to computer chip formation and shape track, is in loose condition (of surface)
Powder thin layer stimulated radiation region occur fusing, solidification, formed cladding layer；
Step 6: completing in step 5 after the scanning of a slice level, forming board decline slice thickness away from
From, and uniform layer overlay pure molybdenum powder is formed by cladding layer again in step 5；
Step 7: repeating the above steps five, six, until completing the process；
Step 8: taking out after sample is cooled to room temperature, and is separated drip molding from forming board using wire cutting technology.
The invention also includes features some in this way:
1. the pure molybdenum powder granularity is 13~53 μm；
2. slice thickness is 0.03mm；
3. forming board material is pure molybdenum plate, substrate thickness 20mm；
4. protective gas is argon gas, purity of argon 99.9%, oxygen content≤100ppm in working chamber in working chamber；
5. forming speed is 2~30cm3/ h, workbench repetitive positioning accuracy are ± 10 μm.
Compared with prior art, the beneficial effects of the present invention are:
SLM technology utilizes high energy laser beam layer by layer deposition pure molybdenum powder, and a direct step completes the preparation of pure molybdenum, effectively solves
The problem of conventional casting methods cannot being taken to prepare pure molybdenum sample since pure molybdenum fusing point is excessively high.In preparation process, without preparing
Smelting equipments and the facilities such as smelting furnace, dry pot, fixture, casting mold effectively avoid pure metal contaminated, and reduction is mingled with content.SLM at
Shape process carries out under the protection of argon gas, can be avoided the oxidation of molybdenum, improves its comprehensive performance.
The present invention prepares pure molybdenum using SLM technology, can recycle the pure molybdenum powder being not used by working bin after shaping, mention
The utilization rate of high powder reduces the waste of metal material, reduces production cost.
The present invention can be obtained by the technological parameter of optimization SLM technology with higher-density, high surface quality
Pure molybdenum drip molding avoids traditional machining and post-processing, uses manpower and material resources sparingly, and shortens the process-cycle.
Using processing technology provided by the invention, the pure molybdenum workpiece prepared has good room-temperature mechanical property, in skill
There is certain theoretical research value and practical application value in art.
Detailed description of the invention
Fig. 1 is work flow diagram of the invention；
Fig. 2 is the course of work schematic diagram of SLM device used in the present invention；1 it is wherein galvanometer, 2 be beam expanding lens, 3 is
Light beam isolator, 4 be f- θ mirror, 5 be working chamber, 6 be light beam, 7 be test specimen, 8 be powdering rolling, 9 be protection gas, 10 be formation cylinder,
111 it is powder cylinder, 12 be dust clarifier, 13 be computer control system, 14 is laser；
Fig. 3 is the pure molybdenum drip molding macrograph under all machined parameters designed by the present invention；
Fig. 4 a is the molybdenum plate scanning electron microscope (SEM) photograph formed under optimized parameter in embodiment；
Fig. 4 b is the molybdenum plate scanning electron microscope (SEM) photograph formed under optimized parameter in embodiment.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
A kind of pure molybdenum precinct laser fusion preparation method of high-compactness, preparation process specifically includes the following steps:
(1) according to pure molybdenum drip molding shape to be processed, threedimensional model is established on computers, and exporting is STL format
File.It is inputted in 3D printing software for editing, carries out two dimensionization processing, model layers are sliced in the height direction, slice
Data include the profile information and machining path of drip molding, and are conducted into precinct laser fusion equipment；
(2) set the working process parameter of pure molybdenum sample: laser spot diameter is 75 μm, laser power 325W, scanning
Speed is 400mm/s, and sweep span is 60 μm, using Cross hatching scanning strategy, layer-by-layer rotary laser scanning direction
67 °, the laser scanning vector for utmostly reducing the adjacent number of plies is overlapped.
(3) forming board is fixed on the workbench of precinct laser fusion equipment, closes door, is filled with after vacuumizing pure
The argon gas that degree is 99.9% is as protective gas；
(4) after the preparation of forming cavity atmosphere, workbench decline, powder storing chamber body rises, and automatic power spreading device utilizes rubber
Scraper is laid with aerosolization spherical shape pure molybdenum powder on forming board；
(5) high energy heat source is utilized, is quickly scanned according to computer chip formation and shape track, the powder in loose condition (of surface)
Fusing, solidification occur for last thin layer stimulated radiation region, form cladding layer；
(6) it completes in step (5) after the scanning of a slice level, forming board declines the distance of a slice thickness,
And uniform layer overlay pure molybdenum powder is formed by cladding layer again in step (5)；
(7) repeat the above steps (5), (6), until completing the process；
(8) it takes out after sample is cooled to room temperature, is separated drip molding from forming board using wire cutting technology.
In the present invention, using precinct laser fusion quick forming method, forming board material is pure molybdenum plate, and substrate thickness is
20mm, lift height are 0.02~0.1mm, and forming speed is 2~30cm3/ h, workbench repetitive positioning accuracy are ± 10 μm, at
Argon gas is protected in shape room, purity 99.9%, oxygen content≤100ppm in working chamber.
In the present invention, specific machined parameters are as follows: laser spot diameter is 75 μm, laser power 325W, scanning speed
For 400mm/s, sweep span is 60 μm, using Cross hatching scanning strategy, 67 ° of layer-by-layer rotary laser scanning direction,
The laser scanning vector for utmostly reducing the adjacent number of plies is overlapped.
The present invention utilizes aerosolization spherical shape molybdenum powder, in the case where purity is the protective effect of 99.9% argon gas, in conjunction with SLM technology
Prepare pure molybdenum.Metal powder is melted using high energy laser beam, fusing, solidification behavior are different from other traditional powder metallurgy works
Skill.
Referring to Fig.1~Fig. 3, general thought of the invention is: the 3D solid mould of part is formed by CAD software first
Then mould shape is exported as STL format, is inputted in 3D printing software for editing later by shape, carry out two dimensionization and handle.I.e. in height
To 3D solid mould shape, equably hierarchy slicing, slice of data include the profile information and machining path of drip molding on degree direction.
Hereafter, 3D printing equipment will finally print and the consistent drip molding of numerical model in conjunction with predetermined process parameter.It is cooling to sample
It is taken out after to room temperature, drip molding is separated from forming board using wire cutting technology, it is higher, functional to obtain surface quality
Drip molding.
Embodiment 1
A kind of pure molybdenum precinct laser fusion preparation method of great surface quality, comprising the following steps:
(1) it is modeled on computers by the three-dimensional entity model that part is formed in CAD software, is then by model output
STL format is inputted later in 3D printing software for editing, carries out two dimensionization processing.
(2) the spherical pure molybdenum powder of aerosolization is imported in feeding bin, powder size is 13~53 μm, and forming board is fixed on
On the workbench of precinct laser fusion equipment, door is closed, the argon gas that purity is 99.9% is filled with after vacuumizing and is used as protection gas
Body guarantees oxygen content≤100ppm in working chamber.
(3) different working process parameters are set separately, changes laser power and scanning speed, controls and sweep in this preparation method
Retouching spacing is 60 μm, using Cross hatching scanning strategy.Starting precinct laser fusion former, workbench declines,
Powder storing chamber body rises, and automatic power spreading device is laid with aerosolization spherical shape pure molybdenum powder using rubber scraper on forming board.It utilizes
High energy heat source is quickly scanned according to computer chip formation and shape track, the powder thin layer stimulated light spoke in loose condition (of surface)
It penetrates region and fusing, solidification occurs, form cladding layer.Layer by layer deposition pure molybdenum powder finally prints and the consistent forming of CAD model
Part.
(4) it takes out after sample is cooled to room temperature, is separated drip molding from forming board using wire cutting technology.
(5) consistency for the drip molding that measurement is printed under this technique.
(6) optimal procedure parameters are selected.
Drip molding consistency in this experiment under different technical parameters is as shown in table 1.
Drip molding consistency under 1 different technical parameters of table
As it will be easily appreciated by one skilled in the art that described above, part specific embodiment only of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
In summary: the present invention relates to a kind of pure molybdenum precinct laser fusion preparation methods of high-compactness, belong to intermetallic composite coating system
Make field.It is the constituency in order to solve high temperature molybdenum-base alloy that the pure molybdenum of high-compactness of the present invention, which chooses laser fusing preparation method,
Laser melts increasing material manufacturing problem.It is characterized in that raw material are aerosolization spherical shape molybdenum powder, powder size is 13~53 μm, table
Face is smooth, grain packing is good.Using precinct laser fusion quick forming method, forming board material is pure molybdenum plate, and substrate is thick
Degree is 20mm, and lift height 0.03mm, forming speed is 2~30cm3/ h, workbench repetitive positioning accuracy are ± 10 μm, at
Argon gas is protected in shape room, purity 99.9%, oxygen content≤100ppm in working chamber.Laser spot diameter is 75 μm, laser function
Rate is 325W, and scanning speed 400mm/s, sweep span is 60 μm, using Cross hatching scanning strategy, is successively rotated
67 ° of laser scanning direction, the laser scanning vector for utmostly reducing the adjacent number of plies is overlapped.The present invention pure molybdenum examination obtained
Sample, consistency with higher have certain theoretical research value and practical application value.
Claims (10)
1. a kind of pure molybdenum precinct laser fusion preparation method of high-compactness, characterized in that include the following steps:
Step 1: establishing molybdenum plate 3D solid numerical model on computers, then by the molybdenum plate 3D solid numerical model
It changes into STL formatted file input 3D printing software for editing, carries out two dimensionization processing, model layers are cut in the height direction
Piece sets scan path and is conducted into precinct laser fusion equipment；
Step 2: setting power, scanning speed, sweep span and the scanning mode of laser beam, and the laser spot diameter is 75 μ
M, laser power 325W, scanning speed 400mm/s, sweep span is 60 μm, using Cross hatching scanning mode,
Layer-by-layer 67 ° of rotary laser scanning direction；
Step 3: forming board being fixed on the workbench of precinct laser fusion equipment, closes door, guarantor is filled with after vacuumizing
Protect gas；
Step 4: after working chamber's atmosphere prepares, workbench decline, powder storing chamber body rises, and automatic power spreading device utilizes rubber scraper
Aerosolization spherical shape pure molybdenum powder is laid on forming board；
Step 5: high energy heat source is utilized, is quickly scanned according to computer chip formation and shape track, the powder in loose condition (of surface)
Fusing, solidification occur for last thin layer stimulated radiation region, form cladding layer；
Step 6: completing in step 5 after the scanning of a slice level, and forming board declines the distance of a slice thickness, and
Uniform layer overlay pure molybdenum powder is formed by cladding layer again in step 5；
Step 7: repeating the above steps five, six, until completing the process；
Step 8: taking out after sample is cooled to room temperature, and is separated drip molding from forming board using wire cutting technology.
2. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 1, characterized in that the pure molybdenum powder
Last granularity is 13~53 μm.
3. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 1 or 2, characterized in that slice thick
Degree is 0.03mm.
4. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 1 or 2, characterized in that forming base
Plate material is pure molybdenum plate, substrate thickness 20mm.
5. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 3, characterized in that forming board material
Material is pure molybdenum plate, substrate thickness 20mm.
6. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 1 or 2, characterized in that working chamber
Interior protective gas is argon gas, purity of argon 99.9%, oxygen content≤100ppm in working chamber.
7. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 3, characterized in that protected in working chamber
Shield gas is argon gas, purity of argon 99.9%, oxygen content≤100ppm in working chamber.
8. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 4, characterized in that protected in working chamber
Shield gas is argon gas, purity of argon 99.9%, oxygen content≤100ppm in working chamber.
9. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 5, characterized in that protected in working chamber
Shield gas is argon gas, purity of argon 99.9%, oxygen content≤100ppm in working chamber.
10. the pure molybdenum precinct laser fusion preparation method of high-compactness according to claim 1 or 2, characterized in that forming speed
Degree is 2~30cm3/ h, workbench repetitive positioning accuracy are ± 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355441.8A CN109317675A (en) | 2018-11-14 | 2018-11-14 | A kind of pure molybdenum precinct laser fusion preparation method of high-compactness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355441.8A CN109317675A (en) | 2018-11-14 | 2018-11-14 | A kind of pure molybdenum precinct laser fusion preparation method of high-compactness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109317675A true CN109317675A (en) | 2019-02-12 |
Family
ID=65257169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811355441.8A Pending CN109317675A (en) | 2018-11-14 | 2018-11-14 | A kind of pure molybdenum precinct laser fusion preparation method of high-compactness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109317675A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181048A (en) * | 2019-05-24 | 2019-08-30 | 清华大学 | A kind of electron beam increasing material manufacturing method of molybdenum-base alloy powder |
| CN111185598A (en) * | 2020-02-19 | 2020-05-22 | 中国科学院重庆绿色智能技术研究院 | Method for improving toughness of additive manufacturing sample piece |
| CN112338188A (en) * | 2020-09-22 | 2021-02-09 | 飞而康快速制造科技有限责任公司 | Preparation method of tungsten alloy additive |
| CN113084196A (en) * | 2021-03-31 | 2021-07-09 | 东北大学 | Device and method for preparing pure tungsten part by selective laser sintering with ultrasonic-assisted powder spreading |
| CN113275594A (en) * | 2021-05-20 | 2021-08-20 | 哈尔滨工程大学 | Selective laser melting forming preparation method of high-density molybdenum alloy |
| CN113351882A (en) * | 2021-06-22 | 2021-09-07 | 清华大学 | High-precision melting manufacturing method for laser powder bed of degradable metal porous support |
| CN114959396A (en) * | 2022-04-22 | 2022-08-30 | 哈尔滨工程大学 | TiC/Mo alloy with lattice structure and selective laser melting preparation method thereof |
| CN118162633A (en) * | 2024-05-14 | 2024-06-11 | 安庆瑞迈特科技有限公司 | 3D printing method of ultrathin-wall tungsten collimator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780544A (en) * | 2010-01-15 | 2010-07-21 | 黑龙江科技学院 | Method for forming refractory metal parts by using laser |
| CN102335742A (en) * | 2011-11-04 | 2012-02-01 | 北京科技大学 | Method for preparing complexly shaped biomedical porous titanium molybdenum alloy implant body |
| CN106623925A (en) * | 2016-12-07 | 2017-05-10 | 中北大学 | Method for selective laser melting of molybdenum-copper composite selective laser melting and forming |
| EP3187286A1 (en) * | 2015-12-28 | 2017-07-05 | General Electric Company | Metal additive manufacturing using gas mixture including oxygen |
| CN108588498A (en) * | 2018-05-30 | 2018-09-28 | 哈尔滨理工大学 | A kind of method that Ni-based functionally gradient material (FGM) and precinct laser fusion method prepare Ni-based functionally gradient material (FGM) |
-
2018
- 2018-11-14 CN CN201811355441.8A patent/CN109317675A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780544A (en) * | 2010-01-15 | 2010-07-21 | 黑龙江科技学院 | Method for forming refractory metal parts by using laser |
| CN102335742A (en) * | 2011-11-04 | 2012-02-01 | 北京科技大学 | Method for preparing complexly shaped biomedical porous titanium molybdenum alloy implant body |
| EP3187286A1 (en) * | 2015-12-28 | 2017-07-05 | General Electric Company | Metal additive manufacturing using gas mixture including oxygen |
| CN106623925A (en) * | 2016-12-07 | 2017-05-10 | 中北大学 | Method for selective laser melting of molybdenum-copper composite selective laser melting and forming |
| CN108588498A (en) * | 2018-05-30 | 2018-09-28 | 哈尔滨理工大学 | A kind of method that Ni-based functionally gradient material (FGM) and precinct laser fusion method prepare Ni-based functionally gradient material (FGM) |
Non-Patent Citations (2)
| Title |
|---|
| DIANZHENG WANG 等: "Densification and crack suppression in selective laser melting of pure molybdenum", 《MATERIALS & DESIGN》 * |
| 王运赣，王宣: "《3D打印技术》", 31 July 2014, 华中科技大学出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181048A (en) * | 2019-05-24 | 2019-08-30 | 清华大学 | A kind of electron beam increasing material manufacturing method of molybdenum-base alloy powder |
| CN111185598A (en) * | 2020-02-19 | 2020-05-22 | 中国科学院重庆绿色智能技术研究院 | Method for improving toughness of additive manufacturing sample piece |
| CN111185598B (en) * | 2020-02-19 | 2021-11-02 | 中国科学院重庆绿色智能技术研究院 | Method for improving toughness of additive manufacturing sample piece |
| CN112338188A (en) * | 2020-09-22 | 2021-02-09 | 飞而康快速制造科技有限责任公司 | Preparation method of tungsten alloy additive |
| CN113084196A (en) * | 2021-03-31 | 2021-07-09 | 东北大学 | Device and method for preparing pure tungsten part by selective laser sintering with ultrasonic-assisted powder spreading |
| CN113275594A (en) * | 2021-05-20 | 2021-08-20 | 哈尔滨工程大学 | Selective laser melting forming preparation method of high-density molybdenum alloy |
| CN113351882A (en) * | 2021-06-22 | 2021-09-07 | 清华大学 | High-precision melting manufacturing method for laser powder bed of degradable metal porous support |
| CN114959396A (en) * | 2022-04-22 | 2022-08-30 | 哈尔滨工程大学 | TiC/Mo alloy with lattice structure and selective laser melting preparation method thereof |
| CN118162633A (en) * | 2024-05-14 | 2024-06-11 | 安庆瑞迈特科技有限公司 | 3D printing method of ultrathin-wall tungsten collimator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109317675A (en) | A kind of pure molybdenum precinct laser fusion preparation method of high-compactness | |
| CN105945281B (en) | The deposition forming machining manufacture of part and mold | |
| CN101780544A (en) | Method for forming refractory metal parts by using laser | |
| CN104308153B (en) | A kind of manufacture method of high-entropy alloy turbogenerator hot-end component based on precinct laser fusion | |
| CN106735208B (en) | The increasing material manufacturing method of large scale labyrinth metal parts | |
| CN106001568B (en) | A kind of functionally gradient material (FGM) metal die 3D printing integral preparation method | |
| CN102941343B (en) | Quick manufacturing method of titanium-aluminum alloy composite part | |
| CN109365811B (en) | Method for forming zinc alloy product by selective laser melting technology | |
| CN103949640B (en) | A kind of electron beam RP technique is prepared the method for Nb-Si based ultra-high temperature alloy | |
| CN103949646B (en) | A kind of preparation method of Nb-Si based ultra-high temperature alloy turbine blade | |
| Xinhong et al. | Hybrid plasma deposition and milling for an aeroengine double helix integral impeller made of superalloy | |
| Yang et al. | Densification, surface morphology, microstructure and mechanical properties of 316L fabricated by hybrid manufacturing | |
| CN105817625A (en) | Composite forming device of molten coating added and decreased materials | |
| US20150375340A1 (en) | Additive manufacturing methods and systems with fiber reinforcement | |
| CN105154701A (en) | Method for preparing high temperature titanium alloy by adopting selective laser melting rapid formation technique | |
| CN101391302A (en) | Entirety quick manufacture method of hot isostatic pressing metal wrapps | |
| CN103949639A (en) | Method for preparing Nb-Si based superhigh-temperature alloy by SLM (selective laser melting) technology | |
| CN105562691A (en) | 3D printing preparation method for injection mold | |
| Lu et al. | Fabricating the steam turbine blade by direct laser forming | |
| CN102773479A (en) | Near-net-shape forming method of refractory metal part | |
| CN109550954A (en) | A kind of selective laser fusing manufacturing process of hot die steel | |
| CN109396434A (en) | A method of titanium alloy component is prepared based on selective laser melting process | |
| CN110194669A (en) | A kind of selective laser sintering Forming Equipments of large complicated part, system and method | |
| CN107866568A (en) | Melt manufacturing process in a kind of selective laser suitable for hydraulic valve block | |
| WO2024021218A1 (en) | Tantalum-tungsten alloy product and preparation method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |