CN108274011A - A kind of preparation method with bimodal distribution metal powder suitable for 3D printing - Google Patents
A kind of preparation method with bimodal distribution metal powder suitable for 3D printing Download PDFInfo
- Publication number
- CN108274011A CN108274011A CN201810181510.1A CN201810181510A CN108274011A CN 108274011 A CN108274011 A CN 108274011A CN 201810181510 A CN201810181510 A CN 201810181510A CN 108274011 A CN108274011 A CN 108274011A
- Authority
- CN
- China
- Prior art keywords
- metal powder
- slurry
- stage
- powder
- rotating speed
- 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.)
- Granted
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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- 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
- B33Y70/00—Materials specially adapted for 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
A kind of preparation method with bimodal distribution metal powder suitable for 3D printing belongs to metal powder material technical field.Metal powder of the average grain diameter in 0.5~1.5 μ m is used to prepare slurry for initial feed；Then agglomeration granulation is carried out to metal powder, the particle diameter distribution of micro-sized metal powder prepared by the rotating speed control by adjusting atomizing disk；Finally micro-sized metal powder after granulation is heat-treated, by degumming and densification consolidation, obtains the metal powder granulates with bimodal size distribution that sphericity, mobility and oxygen content meet 3D printing requirement.This method is compared with other existing associated metal powder preparation methods, it is strong to the controllability of the sphericity of metal powder granulates, particle diameter distribution and oxygen content, the metal powder being distributed with particular size can be prepared in same batch, and there is advantage simple for process, at low cost.
Description
Technical field
The present invention relates to a kind of metals with bimodal particle size distribution obtaining high-compactness printout suitable for 3D printing
The preparation method of spherical powder belongs to metal powder material technical field.
Background technology
Based on successively cumulative principle, alternative tradition prepares processing technology and can make efficiently, in high precision 3D printing technique
The 3 D workpiece of standby complicated shape, therefore receive significant attention in recent years and hot research.However, high-test metal class prints material
Material is the primary bottleneck problem for restricting 3D printing technique application and obtaining high-performance metal printout.For 3D printing metal class
Dusty material, usually require that metal powder grain size tiny (50 μm of ＜), uniformly, have high sphericity, high fluidity and hypoxemia contain
Amount etc..On this basis, more stringent requirements are proposed to dusty material for high-performance metal print component, as with bimodal distribution
Particular size is distributed metal powder.Since the powder of bimodal distribution can keep high mobility and small size
Hole between grain filling large-size particle is to effectively improve powder bulk density, in the condition that need not change printing technology
It is lower to obtain the high performance print part that surface is smooth, institutional framework is fine and close.Currently, the gold of a large number of researchers concern particular size distribution
Belong to powder, but studies have reported that the middle bimodal distribution powder used is mixed with the powder particle of two kinds of granularities.It is this
Method easily causes poor powder flowbility, printout Density inhomogeneity, because long-time ball milling mixing causes very because mixing is uneven
Introduce the impurity elements such as metallic element and oxygen, carbon contained by abrading-ball.Dusty material obtained by existing metal powder technology of preparing,
Usual size distribution is in single peak form, such as gas atomization, plasma rotating electrode process, radio frequency plasma nodularization method.And
And the metal or alloy powder that at present prepared by gas atomization and plasma rotating electrode process, grain size is in 50 μm of finished products below
Rate is also relatively low；Radio frequency plasma nodularization method energy consumption is big, production cost is high.Therefore, pressing needs purity is high at present, cost
The preparation method of 3D printing metal powder relatively low, with particular particle size distribution.
For above-mentioned domain background, in order to solve the limitation of the prior art, the present invention provides a kind of suitable for 3D printing
The preparation method of high-purity, the globular metallic powder being distributed with bimodal particular particle size.
Invention content
Its technological process of preparation method provided by the invention and principle are：Using average grain diameter in 0.5~1.5 μ m
Metal powder be initial feed prepare slurry；Then agglomeration granulation is carried out to metal powder, by the rotating speed for adjusting atomizing disk
Control the particle diameter distribution of the micro-sized metal powder prepared；Finally micro-sized metal powder after granulation is heat-treated, is passed through
Degumming and densification consolidation obtain sphericity, mobility and oxygen content and meet dividing with bimodal grain size for 3D printing requirement
The metal powder granulates of cloth.This method is compared with other existing associated metal powder preparation methods, to metal powder granulates
The controllability of sphericity, particle diameter distribution and oxygen content is strong, can prepare the powder being distributed with particular size, and have technique
Simply, advantage at low cost.
A kind of preparation method of spherical metal powder with bimodal distribution suitable for 3D printing provided by the invention,
It is characterized in that, includes the following steps：
(1) by original metal powder and polyvinyl alcohol, polyethylene glycol and deionized water mixed preparing slurry, 1~2h of ball milling
It obtains stablizing slurry, wherein original metal powder is one kind of Fe, Co, Ni, W etc., and average grain diameter is in 0.5~1.5 μ m
It is interior, original metal powder quality be slurry gross mass 50~78%, polyvinyl alcohol be original metal powder quality 0.8~
2%, polyethylene glycol is the 1~2% of original metal powder quality；
(2) centrifugal spray drying is carried out to slurry prepared by step (1), disk rotating speed is atomized by adjusting, obtained grain size and exist
50 μm or less and the spherical metallic particles with bimodal distribution, are spray-dried using sublevel segmentation, and the first stage is to slurry totality
50%~80% long-pending slurry carries out atomization drying, and atomization disk rotating speed is 12000~13500rpm, and second stage is to remaining material
Slurry directly adjusts atomization disk rotating speed and carries out atomization drying, and it is 16000~18000rpm that second stage, which is atomized disk rotating speed,；
(3) spheric granules that the tube furnace for using argon gas to protect obtains step (2) is heat-treated, using stage heat
Processing carries out degumming and densification consolidates；Then first stage degumming uses second stage and the using 300 DEG C of heat preservation 120min
Three phase heat treatments complete densification consolidation, and second stage heat treatment temperature is Tm/ 2+120 DEG C~Tm/ 2+200 DEG C, TmFor metal
Fusing point, 5~10min of soaking time, phase III heat treatment are directly cooled to T from second stagem/ 2 DEG C~Tm/ 2+120 DEG C, so
120~180min is kept the temperature afterwards, finally obtains the micron-size spherical with bimodal particle size distribution for having both high compactness and mobility
Metal powder.
The second stage temperature of above-mentioned steps (3) is different from phase III temperature.
The technical characteristic and advantage of the method for the present invention mainly have：
(1) prepare aaerosol solution slurry using clean metal powder as original material, initial powder average grain diameter 0.5~
In 1.5 μ ms, compared with the technique for using nano powder to be granulated, cost is greatly reduced；
(2) in the process for preparation of slurry, the ratio of polyvinyl alcohol, polyethylene glycol and deionized water is relatively low and ratio is by first
Beginning powder diameter and reunion degree determine, if average grain diameter is larger, then reduce polyvinyl alcohol, polyethylene glycol and deionized water
Ratio；
(3) preparation of stable, uniform slurry has vital effect to the pattern and particle diameter distribution of prilling powder, this
In invention, ball-milling technology is used, effect is that heavier bulky grain powder is avoided to sink to slurry bottom and lead to organic adhesive
Agent and dispersant are uneven in the absorption of particle surface；
(4) during centrifugal spray drying, being atomized the control of disk rotating speed, to decide whether to obtain having of meeting the requirements double
The spherical powder of peak particle diameter distribution.For evenly dispersed slurry, constant feed rate, centrifugal force is approximately equal to viscous between slurry
Power is tied, radius and the atomization disk rotating speed of atomized drop have following relationship：R=3 σ/(ρ ω2R), σ is that the surface of slurry is opened in formula
Power, directly proportional to phosphoric acid, ρ is the density of slurry, and ω is atomization disk rotating speed, and R is the radius of atomizing disk, and r is atomized drop
Radius (be approximately equal to atomization obtain the grain size of powder particle).By regulating and controlling each technological parameter, can be prepared with bimodal
The 3D printing metal powder of particle diameter distribution, high sphericity, high fluidity；
(5) heat treatment process after being granulated, the quality to finally ensureing 3D printing metal powder are extremely important.The present invention
In, densification consolidation is completed using stage heat treatment mode, the first stage effect of heat treatment is made in prilling powder particle
Portion's little particle high-temperature instantaneous melts to form solid phase bonding, and does not occur between prilling powder particle integral sintered；At second stage heat
It manages temperature and is less than the first stage, effect is to make to reach fine and close under the conditions of low temperature long-time heat preservation inside prilling powder particle
Change, this stage heat treatment method can effectively prevent fine particle overheat in prilling powder and occur to bond formation compared with coarse granule
Satellite ball or larger particles internal combustion be not fine and close, thus improves the quality of powder；
(6) the method for the present invention prepares bimodal particle size distribution with better simply processing step, realization in same batch
Metal powder, and the sphericity of powder particle and particle diameter distribution controllability are strong, are prepared relative to existing globular metallic powder
Technique, production efficiency is high, cost is substantially reduced.
Description of the drawings
The microstructure figure and particle diameter distribution for the globular metallic powder with bimodal distribution that Fig. 1 present invention is prepared are united
Meter figure；Wherein, a, b are respectively the metal cobalt powder microstructure and particle diameter distribution statistical chart in embodiment 1, and c, d are respectively to implement
Metal nickel powder microstructure in example 2 and particle diameter distribution statistical chart, e, f are respectively the metal tungsten powder microstructure in embodiment 3
With particle diameter distribution statistical chart.
The object phase test map for the micron-size spherical metal powder that Fig. 2 present invention is prepared；Wherein a is in embodiment 1
The object phase test map of cobalt powder, b are the object phase test map of nickel powder in embodiment 2, and c is that the object of tungsten powder in embodiment 3 mutually detects
Collection of illustrative plates.
1 embodiment of the present invention 1 of table applies the metallic cobalt that example 2 and embodiment 3 be prepared, the spherical shape of nickel and tungsten powder particle
Degree, mobility and Density Detection result.
Specific implementation mode
With reference to embodiment, the invention will be further described, but the present invention is not limited to following embodiments.
Embodiment 1, by the average grain diameter of 50% pulp quality be 0.5 μm pure cobalt powder powder stock and 2% cobalt powder quality
Polyvinyl alcohol, the polyethylene glycol of 2% cobalt powder quality and deionized water prepare suspension slurry, and ball milling 1h obtains uniform and stable hang
Turbid slurry carries out agglomeration granulation using centrifugal atomizing drying equipment, 50% slurry of slurry total volume is used
The atomization disk rotating speed of 12000rpm is granulated, and the slurry of remaining 50% volume is carried out using the atomization disk rotating speed of 16000rpm
It is granulated, obtains the spherical cobalt granule with bimodal distribution；Heat is carried out to the cobalt dust after granulation using the tube furnace of argon gas protection
Processing, first stage heat treatment temperature are 300 DEG C, soaking time 120min；Second stage heat treatment temperature is 940 DEG C, heat preservation
Time 5min, phase III heat treatment temperature are down to 870 DEG C, and soaking time 180min obtains having both bimodal particle size distribution and height
The 3D printing of mobility micron-size spherical cobalt dust.The microstructure figure and particle diameter distribution statistical chart for the cobalt powder being prepared are such as
A in a, b in Fig. 1, object phase test map such as Fig. 2, sphericity, apparent density and mobility measurement result are shown in Table 1, use
The density for the printout that printout prepared by this cobalt dust is prepared with monomodal particle size distribution powder is relatively shown in Table 2.
Embodiment 2, gathering pure nickel powder raw material and 1% nickel powder quality that the average grain diameter of 68% pulp quality is 1 μm
Vinyl alcohol, the polyethylene glycol of 1.5% nickel powder quality and deionized water prepare suspension slurry, and ball milling 1.5h obtains uniform and stable
65% slurry of slurry total volume is granulated by suspension slurry using the atomization disk rotating speed of 13000rpm, will be remaining
The slurry of 35% volume is granulated using the atomization disk rotating speed of 17000rpm, obtains the spherical nickel particle with bimodal distribution；
The tube furnace protected using argon gas is heat-treated the nickel by powder after granulation, and first stage heat treatment temperature is 300 DEG C, heat preservation
Time 120min；Second stage heat treatment temperature is 870 DEG C, and soaking time 8min, phase III heat treatment temperature is down to 800
DEG C, soaking time 150min obtains the 3D printing micron-size spherical nickel by powder for having both bimodal particle size distribution and high fluidity.System
B in c, d in the microstructure figure and particle diameter distribution statistical chart such as Fig. 1 of standby obtained nickel powder, object phase test map such as Fig. 2,
Its sphericity, apparent density and mobility measurement result are shown in Table 1, the printout and monomodal particle size distribution prepared using this nickel by powder
The density of printout prepared by powder is relatively shown in Table 2.
Embodiment 3, pure tungsten powder raw material and 0.9% tungsten powder quality by the average grain diameter of 78% pulp quality for 1.5 μm
Polyvinyl alcohol, 1.2% tungsten powder quality polyethylene glycol and deionized water prepare suspension slurry, ball milling 2h obtains uniform and stable
Suspension slurry, 80% slurry of slurry total volume is granulated using the atomization disk rotating speed of 13500rpm, will be remaining
The slurry of 20% volume is granulated using the atomization disk rotating speed of 18000rpm, obtains the spherical tungsten particle with bimodal distribution；
The tube furnace protected using argon gas is heat-treated the tungsten powder after granulation, and first stage heat treatment temperature is 300 DEG C, heat preservation
Time 120min；Second stage heat treatment temperature is 1800 DEG C, and soaking time 10min, phase III heat treatment temperature is down to
1700 DEG C, soaking time 180min, obtain the 3D printing micron-size spherical tungsten powder for having both bimodal particle size distribution and high fluidity
End.In e, f in the microstructure figure and particle diameter distribution statistical chart such as Fig. 1 of the tungsten powder being prepared, object phase test map such as Fig. 2
C, sphericity, apparent density and mobility measurement result be shown in Table 1, the printout and monomodal particle size prepared using this tungsten powder
The density of printout prepared by distribution powder is relatively shown in Table 2.
The physical parameter for the metal powder that 1 1-3 of the embodiment of the present invention of table is prepared
Bimodal particle size distribution metal powder printout and monomodal particle size distribution metal powder in 2 1-3 of the embodiment of the present invention of table
The density of printout
Claims (2)
1. a kind of preparation method of spherical metal powder with bimodal distribution suitable for 3D printing, which is characterized in that including
Following steps：
(1) original metal powder and polyvinyl alcohol, polyethylene glycol and deionized water mixed preparing slurry, 1~2h of ball milling are obtained
Stablize slurry, for wherein original metal powder average particle size in 0.5~1.5 μ m, original metal powder quality is that slurry is total
The 50~78% of quality, polyvinyl alcohol are the 0.8~2% of original metal powder quality, and polyethylene glycol is original metal powder matter
The 1~2% of amount；
(2) centrifugal spray drying is carried out to slurry prepared by step (1), disk rotating speed is atomized by adjusting, obtain grain size at 50 μm
Below and with bimodal distribution spherical metallic particles, using sublevel segmentation be spray-dried, the first stage is to slurry total volume
50%~80% slurry carries out atomization drying, and atomization disk rotating speed is 12000~13500rpm, and second stage is straight to remaining slurry
It connects adjusting atomization disk rotating speed and carries out atomization drying, it is 16000~18000rpm that second stage, which is atomized disk rotating speed,；
(3) spheric granules that the tube furnace for using argon gas to protect obtains step (2) is heat-treated, using stage heat treatment
It carries out degumming and densification consolidates；Then first stage degumming uses second stage and third rank using 300 DEG C of heat preservation 120min
Densification consolidation is completed in section heat treatment, and second stage heat treatment temperature is Tm/ 2+120 DEG C~Tm/ 2+200 DEG C, TmIt is molten for metal
Point, 5~10min of soaking time, phase III heat treatment are directly cooled to T from second stagem/ 2 DEG C~Tm/ 2+120 DEG C, then
120~180min is kept the temperature, the micron-size spherical gold with bimodal particle size distribution for having both high compactness and mobility is finally obtained
Belong to powder；
The second stage temperature of above-mentioned steps (3) is different from phase III temperature.
2. a kind of preparation side of spherical metal powder with bimodal distribution suitable for 3D printing described in accordance with the claim 1
Method, which is characterized in that original metal powder is one kind of Fe, Co, Ni, W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181510.1A CN108274011B (en) | 2018-03-06 | 2018-03-06 | Preparation method of metal powder with bimodal distribution suitable for 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181510.1A CN108274011B (en) | 2018-03-06 | 2018-03-06 | Preparation method of metal powder with bimodal distribution suitable for 3D printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108274011A true CN108274011A (en) | 2018-07-13 |
| CN108274011B CN108274011B (en) | 2021-05-14 |
Family
ID=62809308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810181510.1A Active CN108274011B (en) | 2018-03-06 | 2018-03-06 | Preparation method of metal powder with bimodal distribution suitable for 3D printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108274011B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877343A (en) * | 2019-04-04 | 2019-06-14 | 北京工业大学 | A kind of preparation method of the high-quality sized spherical titanium powder suitable for 3D printing |
| CN110614376A (en) * | 2019-09-12 | 2019-12-27 | 北京工业大学 | Preparation method of tungsten-copper composite powder for 3D printing |
| CN112692294A (en) * | 2020-12-22 | 2021-04-23 | 厦门钨业股份有限公司 | High-specific gravity tungsten alloy powder and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000003049A1 (en) * | 1998-07-13 | 2000-01-20 | Sandvik Ab; (Publ) | Method of making cemented carbide |
| CN1657203A (en) * | 2004-12-31 | 2005-08-24 | 云南锡业集团有限责任公司 | Nonferrous metal powder |
| CN101501232A (en) * | 2005-12-02 | 2009-08-05 | 埃克森美孚研究工程公司 | Bimodal and multimodal dense boride cermets with superior erosion performance |
| CN103011828A (en) * | 2012-12-27 | 2013-04-03 | 北京工业大学 | Preparation method of agglomerated composite thermal spraying powder of boride-containing ceramic |
| CN104772473A (en) * | 2015-04-03 | 2015-07-15 | 北京工业大学 | Preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing |
| CN106216705A (en) * | 2016-09-19 | 2016-12-14 | 北京工业大学 | A kind of preparation method of 3D printing fine grained simple substance globular metallic powder |
-
2018
- 2018-03-06 CN CN201810181510.1A patent/CN108274011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000003049A1 (en) * | 1998-07-13 | 2000-01-20 | Sandvik Ab; (Publ) | Method of making cemented carbide |
| CN1657203A (en) * | 2004-12-31 | 2005-08-24 | 云南锡业集团有限责任公司 | Nonferrous metal powder |
| CN101501232A (en) * | 2005-12-02 | 2009-08-05 | 埃克森美孚研究工程公司 | Bimodal and multimodal dense boride cermets with superior erosion performance |
| CN103011828A (en) * | 2012-12-27 | 2013-04-03 | 北京工业大学 | Preparation method of agglomerated composite thermal spraying powder of boride-containing ceramic |
| CN104772473A (en) * | 2015-04-03 | 2015-07-15 | 北京工业大学 | Preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing |
| CN106216705A (en) * | 2016-09-19 | 2016-12-14 | 北京工业大学 | A kind of preparation method of 3D printing fine grained simple substance globular metallic powder |
Non-Patent Citations (1)
| Title |
|---|
| 谢德龙等: ""雾化盘转速对EVA可再分散乳胶粉性能的影响(英文)"", 《陕西科技大学学报(自然科学版)》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877343A (en) * | 2019-04-04 | 2019-06-14 | 北京工业大学 | A kind of preparation method of the high-quality sized spherical titanium powder suitable for 3D printing |
| CN110614376A (en) * | 2019-09-12 | 2019-12-27 | 北京工业大学 | Preparation method of tungsten-copper composite powder for 3D printing |
| CN110614376B (en) * | 2019-09-12 | 2022-05-17 | 北京工业大学 | Preparation method of tungsten-copper composite powder for 3D printing |
| CN112692294A (en) * | 2020-12-22 | 2021-04-23 | 厦门钨业股份有限公司 | High-specific gravity tungsten alloy powder and preparation method thereof |
| CN112692294B (en) * | 2020-12-22 | 2022-12-09 | 厦门钨业股份有限公司 | High-specific gravity tungsten alloy powder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108274011B (en) | 2021-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106216705B (en) | A kind of preparation method of 3D printing fine grained simple substance globular metallic powder | |
| CN108145170A (en) | A kind of preparation method of infusibility high-entropy alloy spherical powder | |
| CN110722171B (en) | Method for preparing rare earth oxide doped tungsten and molybdenum spherical powder for 3D printing | |
| CN107309434B (en) | Preparation method and application of high-purity compact spherical molybdenum powder | |
| CN109128141B (en) | Preparation method of nano WC-Co composite powder | |
| CN109047781A (en) | A method of preparing large scale tungsten product | |
| CN107585768B (en) | Method for preparing superfine tungsten carbide powder by oxidation-reduction method | |
| CN108274011A (en) | A kind of preparation method with bimodal distribution metal powder suitable for 3D printing | |
| CN110625112B (en) | Titanium or titanium alloy spherical powder with rare earth oxide distributed on surface and preparation method thereof | |
| CN108486398A (en) | A kind of preparation method of W-Co carbide hard metals | |
| CN102259186A (en) | Method for producing thin spherical tungsten powder | |
| CN104942300B (en) | Preparation method of hollow or solid spherical metal powder | |
| CN106216690B (en) | A kind of preparation method of reunion slug type thermal spraying tungsten powder | |
| CN109877343A (en) | A kind of preparation method of the high-quality sized spherical titanium powder suitable for 3D printing | |
| CN109321768A (en) | A kind of ZrO2-Y2O3Particle-reinforced molybdenum alloy and preparation method thereof, composite granule and preparation method thereof | |
| CN104070173B (en) | The preparation method of globular tungsten powder | |
| CN113800522A (en) | Method for preparing high-purity compact tungsten carbide-cobalt composite spherical powder material | |
| CN106747468B (en) | Drain tube material and preparation method thereof for aerosolization titanium or titanium alloy powder | |
| CN112719279B (en) | Preparation method of CuCrZr alloy powder for 3D printing | |
| CN113909479A (en) | Preparation method of superfine spherical zirconium powder capable of realizing particle size classification | |
| CN106141197A (en) | A kind of preparation method of fine grained tungsten powder | |
| CN111515408B (en) | NiTi alloy powder and preparation method and application thereof | |
| CN109332717A (en) | A kind of preparation method of spherical shape molybdenum titanium-zirconium alloy powder | |
| CN116967461A (en) | High-dispersion low-burning-loss superfine silver powder and preparation method thereof | |
| CN114713833B (en) | Spherical tungsten-based composite powder based on in-situ reduction and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |