CN106216705A - A kind of preparation method of 3D printing fine grained simple substance globular metallic powder - Google Patents

A kind of preparation method of 3D printing fine grained simple substance globular metallic powder Download PDF

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CN106216705A
CN106216705A CN201610832136.8A CN201610832136A CN106216705A CN 106216705 A CN106216705 A CN 106216705A CN 201610832136 A CN201610832136 A CN 201610832136A CN 106216705 A CN106216705 A CN 106216705A
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powder
metal
elemental metals
hydrogen
preparation
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CN106216705B (en
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聂祚仁
张亚娟
宋晓艳
王海滨
刘雪梅
贺定勇
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Beijing University of Technology
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Beijing University of Technology
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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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/12—Making metallic powder or suspensions thereof using physical processes starting from gaseous material
    • 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
    • B22F1/142—Thermal or thermo-mechanical treatment
    • 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
    • B22F1/148—Agglomerating
    • 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
    • B22F9/026—Spray drying of solutions or suspensions
    • 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
    • B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Abstract

The present invention relates to the preparation method of a kind of 3D printing fine grained simple substance globular metallic powder, belong to metal dust preparing technical field.This preparation method uses high pure metal bulk to be raw material, and in an inert atmosphere by arc evaporation, the conduction of heat and the activity that are filled with hydrogen control metal gas atom are allowed to cool deposition and obtain high purity elemental nano metal powder granule simultaneously；Then high purity elemental nano metal powder is carried out agglomeration granulation, obtain the micron order elemental metals powder of higher density；Finally micron order elemental metals powder after pelletize is carried out heat treatment, by degumming and densification consolidation, it is thus achieved that granularity, sphericity, mobility and oxygen content meet 3D and print the elemental metals powder particle required.This method is compared with other processes, strong to the controllability of the sphericity of metallic particles, particle diameter distribution and oxygen content, and has that technique is simple and the advantage of low cost.

Description

A kind of preparation method of 3D printing fine grained simple substance globular metallic powder
Technical field
The present invention relates to the preparation method of a kind of 3D printing fine grained simple substance globular metallic powder, belong to metal dust system Standby technical field.
Background technology
It is all with chemistry etc. that 3D printing technique combines digital modeling techniques, Electromechanical Control technology, information technology, material science Multi-field cutting edge technology, has been applied to product prototype, Making mold, biological engineering and the field such as medical science, jewelry-making, can replace The efficiency for conventional fine processing technique and promoting making to a great extent and measure of precision.But, 3D prints technical process Metal powder material is had higher requirement, as required particle size range at 20-50 micron, there is high sphericity and hypoxia contains Amount etc..At present, the domestic required basic dependence on import of fine grain globular metallic powder, owing to the preparation technology of powder exists raw material Bottleneck problem that utilization rate is low, expensive, this constrain largely the popularization of China's metal 3D printing technique with should With.
Existing metal dust technology of preparing mainly has: mechanical attrition method, atomization, plasma rotating electrode process, physics Chemical method etc..Wherein, gas atomization is one of main method preparing superfine metal and alloy powder, but the one of its maximum Problem is exactly that productivity is low, and the metal or alloy powder size prepared reaches the yield rate of below 50 μm and only has about 30%；Ball Mill method is only used for fragile material, and usual oxygen content is higher and uncontrollable powder particle pattern；Plasma rotating electrode process system Standby powder diameter is relatively big, typically larger than 50 μm；Electrochemistry, reducing process are relatively costly, and the solvent and the reducing agent that use have more Severe toxicity, and it is readily incorporated the impurity such as halogen, sulfur.CN201010219344.3 discloses a kind of ultra-fine and nano WC-Co composite powder Agglomerating prilling method, after utilizing this method that ultra-fine and nano WC-Co composite powder are carried out agglomeration granulation, agglomerated particle can be direct For hot-spraying technique, it is possible to preparation has a hard alloy coating of the ultra-fine of excellent comprehensive performance and nanostructured, but for The requirement of 3D printing metal or alloy powder also has certain gap, needs to study the most further.Therefore, the most urgent Demand low cost, high-purity, the 3D of size tunable print by the preparation method of metal or alloy powder.
Summary of the invention
Above-mentioned limitation based on prior art, the present invention provides a kind of 3D printing fine grained simple substance globular metallic powder Preparation method.For solving, 3D printing metal or alloy powder purity is low, particle diameter is uncontrollable and raw material availability is low, price The problems such as costliness.
Technical scheme is as follows:
The preparation method of a kind of 3D printing fine grained simple substance globular metallic powder, it is characterised in that this preparation method is adopted It is raw material with high pure metal bulk, in an inert atmosphere by arc evaporation, is filled with hydrogen control metal gas former simultaneously Conduction of heat and the activity of son are allowed to cool deposition and obtain high purity elemental nano metal powder granule；Then high purity elemental metal is received Rice flour end carries out agglomeration granulation, obtains the micron order elemental metals powder of higher density；Finally to micron order elemental gold after pelletize Belong to powder and carry out heat treatment, by degumming and densification consolidation, it is thus achieved that granularity, sphericity, mobility and oxygen content meet 3D prints the elemental metals powder particle required, it specifically includes following steps:
(1) using high pure metal bulk as anode, tungsten is negative electrode, under noble gas with hydrogen environment, is made by electric discharge Generate gas atom with forming high intensity electric arc evaporated metal, form the solid-state elemental metals that particle diameter is 20～80nm after condensation and receive Rice grain, wherein the composition of metal block material is selected from Fe, Co, Ni or Zn, and noble gas with the order that is passed through of hydrogen is: first take out true Sky, then pass to argon carry out the starting the arc start evaporation, be passed through hydrogen the most again and carry out continuous evaporation；
(2) elemental metals nano-particle polyvinyl alcohol, Polyethylene Glycol and deionized water and step (1) prepared is by necessarily Ratio, combining to prepare by ball milling and mechanical agitation obtains stable suspension slip, then utilizes closed cycle spray to do Dry equipment carries out agglomeration granulation, it is thus achieved that the spherical metallic particles of 20～50 μm, and being wherein dried medium is argon；Ball milling and machinery stir Mix and combine, first carry out ball milling, carry out mechanical agitation the most again；
(3) spherical metallic particles using the tube furnace of argon shield to prepare step (2) carries out heat treatment, first stage Heat treatment temperature is 250～350 DEG C, temperature retention time 90～150min；Second stage heat treatment temperature is Tm/ 2+80～Tm/2+ 180 DEG C, TmFor elemental metals fusing point, temperature retention time is 120～180min；Finally cool to room temperature with the furnace, obtain being applicable to 3D The fine grained simple substance globular metallic powder of printing demand；
Wherein, the pressure ratio being filled with hydrogen and argon in step (1) is 1:1～3, is passed through argon and reaches to vacuum pressure 0.04～0.06MPa carries out the starting the arc, then passes to hydrogen to vacuum pressure and reaches 0.01～0.03MPa and carry out continuous evaporation；
In step (2), the slurry ball-milling time is 40～80min, and rotating speed is 300～400r/min, and the mechanical agitation time is 20 ～40min, stir speed (S.S.) is 100～200r/min, it is ensured that total time is 60～120min.
Technical characteristic and the advantage of the present invention mainly have: (1), during the metal starting the arc is evaporated, is filled with hydrogen, at height The lower hydrogen of temperature, as heat-conducting medium, can improve productivity and control the activity of metal gas atom, the elemental gold that product is mutually pure Belong to nanoparticle；(2) aaerosol solution slip is prepared with the nano metal powder that thing is mutually pure for original material.In the present invention, surely The preparation determining distributed slurry has vital effect to pattern and the particle diameter distribution of prilling powder, uses ball milling to stir with machinery Mixing the mode combined, the effect of first stage ball milling is to smash nanoparticle agglomerates body, makes organic binder bond and dispersant exist The absorption of particle surface reaches balance, and second stage uses the mechanical agitation that energy is relatively low, and effect is discharged in slip and is mingled with Bubble also makes the macromolecular chain of organic additive connect the tridimensional network that formation is uniform and stable；(3) by spray drying Method carries out pelletize to prepared stable suspersion solution slip, it is possible to obtain have good sphericity, low oxygen content and relatively The micron particles of high-compactness.In the present invention, drying tower is closed, and dry medium is noble gas, can effectively control Oxygen content in the metal powder granulates of preparation eventually.(4) Technology for Heating Processing after pelletize, meets 3D printing requirement to final acquisition Metal dust extremely important.In the present invention, using stage heat treatment mode, the effect of first stage heat treatment is to make pelletize During add organic binder bond volatilization；The effect of second stage heat treatment is to make to form solid phase between metal powder granulates to glue Knot, both ensures have enough interparticle bond strength and consistency, does not the most occur granule (or internal microstructure) to be quickly roughened Or it is integral sintered.The present invention is combined by the parameter regulating and controlling each processing step, can prepare and have excellent sphericity, Gao Liu Dynamic property, low oxygen content and mean diameter and particle diameter distribution meet 3D and print the pure elemental metals powder required.Meanwhile, this method with Other processes are compared, strong to the controllability of sphericity, particle diameter distribution and the oxygen content of metallic particles, and have technique letter Single advantage with low cost.
Accompanying drawing explanation
The thing of nano metal powder prepared by Fig. 1 a-Fig. 1 c present invention detects collection of illustrative plates mutually；Nanometer during wherein a is embodiment 1 The thing of cobalt powder detects collection of illustrative plates mutually, and b is that in embodiment 2, the thing of nanometer iron powder detects collection of illustrative plates mutually, and c is nano-nickel powder in embodiment 3 Thing detects collection of illustrative plates (wherein before test, determinand vaseline being wrapped up anti-oxidation) mutually.
The microstructure of nano metal powder, crystal structure and particle diameter distribution prepared by Fig. 2 a-Fig. 2 c present invention；Wherein a For the high power transmission electron microscope shape appearance figure of nano-cobalt powder in embodiment 1, b is that the SEAD collection of illustrative plates of nanometer iron powder granule is with vertical The calibration result of square crystal structure, c is the particle diameter distribution statistics result of nano-nickel powder granule.
The thing of 3D printing micron-size spherical metal dust prepared by Fig. 3 a-Fig. 3 c present invention detects collection of illustrative plates mutually；Wherein a is In embodiment 1, the thing of cobalt powder detects collection of illustrative plates mutually, and b is that in embodiment 2, the thing of iron powder detects collection of illustrative plates mutually, and c is nikel powder in embodiment 3 Thing detects collection of illustrative plates mutually.
The microstructure of 3D printing metal powder granulates prepared by Fig. 4 a-Fig. 4 c present invention and particle diameter distribution；Wherein a is The high power shape appearance figure of single metal cobalt granule in embodiment 1, b is the scanning electron microscope shape appearance figure of iron granule in embodiment 2, c For the particle diameter distribution statistics result of metallic nickel powder granule in embodiment 3.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following example.
Table 1 embodiment of the present invention 1, execute example 2 and metallic cobalt, ferrum and nickel by powder granule that embodiment 3 prepares spherical Degree, mobility and Density Detection result.
Embodiment 1, using raw material high-purity cobalt bulk (purity 99.99wt%) as anode, tungsten is negative electrode, and first evacuation is passed through Argon reaches 0.04MPa to vacuum pressure, forms high intensity electric arc by discharge process, and the starting the arc is passed through hydrogen to vacuum after completing Pressure reaches 0.03MPa, forms solid-state high-purity cobalt nano-particle by the condensation of evaporated metal gas atom, and its thing detects collection of illustrative plates mutually Such as Fig. 1 a, microstructure such as Fig. 2 a；Utilize existing patented technology (granted patent number 201010219344.3), by cobalt nano-particle Mix with polyvinyl alcohol, Polyethylene Glycol and deionized water, then ball milling 60min, then mechanical agitation 20min, obtain uniform and stable Suspension slip, utilize closed cycle spray drying equipment to carry out agglomeration granulation, it is thus achieved that the spherical cobalt granule of 20～50 μm；Adopt With the tube furnace of argon shield, the cobalt dust after pelletize being carried out heat treatment, first stage heat treatment temperature is 250 DEG C, during insulation Between 150min；Second stage heat treatment temperature is 915 DEG C, and temperature retention time is 120min；Finally cool to room temperature with the furnace, held concurrently Tool high compactness and the fine grained micron-size spherical cobalt dust of mobility.The cobalt powder thing prepared detects collection of illustrative plates such as Fig. 3 a mutually, High power pattern such as Fig. 4 a of single metal cobalt granule, its sphericity, apparent density, mobility and measurement of oxygen content the results are shown in Table 1.
Embodiment 2, using raw material high purity iron bulk (purity 99.99wt%) as anode, be first passed through argon to vacuum pressure Reaching 0.05MPa, form high intensity electric arc by discharge process, the starting the arc is passed through hydrogen after completing and reaches to vacuum pressure 0.02MPa, forms solid-state high purity iron nano-particle by the condensation of evaporated metal gas atom, and its thing detects collection of illustrative plates such as Fig. 1 b mutually, SEAD collection of illustrative plates and crystal face calibration result such as Fig. 2 b of cubic crystal structure；Utilize existing patented technology (granted patent Numbers 201010219344.3), iron nano-particle is mixed with polyvinyl alcohol, Polyethylene Glycol and deionized water, ball milling 70min, then Mechanical agitation 30min obtains uniform and stable suspension slip, utilizes closed cycle spray drying equipment to carry out agglomeration granulation, obtains Obtain the spherical iron particles of 20～50 μm；The tube furnace using argon shield carries out heat treatment, the first rank to the iron powder after pelletize Section heat treatment temperature is 300 DEG C, temperature retention time 120min；Second stage heat treatment temperature is 920 DEG C, and temperature retention time is 150min；Finally cool to room temperature with the furnace, obtain having concurrently the fine grained micron-size spherical iron powder of high compactness and mobility.System The standby iron powder thing obtained detects collection of illustrative plates such as Fig. 3 b mutually, and scanning electron microscope pattern such as Fig. 4 b of iron granule, its sphericity, pine fill close Degree, mobility and measurement of oxygen content the results are shown in Table 1.
Embodiment 3, using raw material high purity nickel bulk (purity 99.99wt%) as anode, be first passed through argon to vacuum pressure Reaching 0.06MPa, form high intensity electric arc by discharge process, the starting the arc is passed through hydrogen after completing and reaches to vacuum pressure 0.01MPa, forms solid-state high purity nickel nano-particle by the condensation of evaporated metal gas atom, and its thing detects collection of illustrative plates such as Fig. 1 c mutually, Particle diameter distribution statistics result such as Fig. 2 c of nano nickel powder particle；Utilize existing patented technology (granted patent number 201010219344.3), nano nickel particles is mixed with polyvinyl alcohol, Polyethylene Glycol and deionized water, then ball milling 80min, Mechanical agitation 40min obtains uniform and stable suspension slip again, utilizes closed cycle spray drying equipment to carry out agglomeration granulation, Obtain the spherical nickel granule of 20～50 μm；The tube furnace using argon shield carries out heat treatment to the nickel by powder after pelletize, and first Phase heat treatment temperature is 350 DEG C, temperature retention time 90min；Second stage heat treatment temperature is 810 DEG C, and temperature retention time is 180min；Finally cool to room temperature with the furnace, obtain having concurrently the fine grained micron-size spherical nickel by powder of high compactness and mobility.System The standby nikel powder thing obtained detects collection of illustrative plates such as Fig. 3 c mutually, and particle diameter distribution statistics result such as Fig. 4 c of granule, its sphericity, pine fill close Degree, mobility and measurement of oxygen content the results are shown in Table 1.
The physical parameter of the metal dust that table 1 embodiment of the present invention 1, embodiment 2 and embodiment 3 prepare

Claims (1)

1. a 3D prints by the preparation method of fine grained simple substance globular metallic powder, it is characterised in that this preparation method uses High pure metal bulk is raw material, in an inert atmosphere by arc evaporation, is filled with hydrogen simultaneously and controls metal gas atom Conduction of heat and activity be allowed to cool deposition and obtain high purity elemental nano metal powder granule；Then to high purity elemental metal nano Powder carries out agglomeration granulation, obtains the micron order elemental metals powder of higher density；Finally to micron order elemental metals after pelletize Powder carries out heat treatment, by degumming and densification consolidation, it is thus achieved that granularity, sphericity, mobility and oxygen content meet 3D Printing the elemental metals powder particle required, it specifically includes following steps:
(1) using high pure metal bulk as anode, tungsten is negative electrode, under noble gas with hydrogen environment, by discharge process shape Become high intensity electric arc evaporated metal to generate gas atom, after condensation, form the solid-state elemental metals nanometer that particle diameter is 20～80nm Grain, wherein the composition of metal block material is selected from Fe, Co, Ni or Zn, and noble gas with the order that is passed through of hydrogen is: first evacuation, so After be passed through argon carry out the starting the arc start evaporation, be passed through hydrogen the most again and carry out continuous evaporation；
(2) elemental metals nano-particle polyvinyl alcohol, Polyethylene Glycol and deionized water and step (1) prepared is by a definite proportion Example, combining to prepare by ball milling and mechanical agitation obtains stable suspension slip, then utilizes closed cycle spray to be dried Equipment carries out agglomeration granulation, it is thus achieved that the spherical metallic particles of 20～50 μm, and being wherein dried medium is argon；Ball milling and mechanical agitation Combine, first carry out ball milling, carry out mechanical agitation the most again；
(3) tube furnace of argon shield is used spherical metallic particles prepared by step (2) to be carried out heat treatment, at first stage heat Reason temperature is 250～350 DEG C, temperature retention time 90～150min；Second stage heat treatment temperature is Tm/ 2+80～Tm/ 2+180 DEG C, TmFor elemental metals fusing point, temperature retention time is 120～180min；Finally cooling to room temperature with the furnace, obtaining being applicable to 3D printing needs The fine grained simple substance globular metallic powder asked；
Wherein, the pressure ratio being filled with hydrogen and argon in step (1) is 1:1～3, be passed through argon to vacuum pressure reach 0.04～ 0.06MPa carries out the starting the arc, then passes to hydrogen to vacuum pressure and reaches 0.01～0.03MPa and carry out continuous evaporation；
In step (2), the slurry ball-milling time is 40～80min, and rotating speed is 300～400r/min, the mechanical agitation time be 20～ 40min, stir speed (S.S.) is 100～200r/min, it is ensured that total time is 60～120min.
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CN106623953A (en) * 2016-12-28 2017-05-10 东莞市精研粉体科技有限公司 Preparing method of low-reflectivity spherical copper powder for 3D printing
CN108262473A (en) * 2016-12-30 2018-07-10 西门子公司 The method of the component of 3D printing composite powder, printing equipped with embedded component and the component and its printer model
CN108274011A (en) * 2018-03-06 2018-07-13 北京工业大学 A kind of preparation method with bimodal distribution metal powder suitable for 3D printing
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
CN111496243A (en) * 2019-03-07 2020-08-07 安徽中体新材料科技有限公司 Method for removing satellite powder in metal powder for 3D printing
CN112105471A (en) * 2018-03-05 2020-12-18 全球先进金属美国股份有限公司 Anode and capacitor containing spherical powder
CN112792353A (en) * 2021-04-01 2021-05-14 陕西斯瑞新材料股份有限公司 Method for 3D printing of copper and copper alloy by using irregular powder
CN113319273A (en) * 2021-07-05 2021-08-31 北京科技大学顺德研究生院 Copper-tin composite spherical particle powder and preparation method thereof
CN114669749A (en) * 2022-04-01 2022-06-28 西安西电高压开关有限责任公司 Preparation system and method of high-performance superfine contact material
CN116689754A (en) * 2023-08-04 2023-09-05 江苏威拉里新材料科技有限公司 Metal powder for 3D printing and preparation method thereof

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CN106623953A (en) * 2016-12-28 2017-05-10 东莞市精研粉体科技有限公司 Preparing method of low-reflectivity spherical copper powder for 3D printing
CN108262473A (en) * 2016-12-30 2018-07-10 西门子公司 The method of the component of 3D printing composite powder, printing equipped with embedded component and the component and its printer model
CN112105471A (en) * 2018-03-05 2020-12-18 全球先进金属美国股份有限公司 Anode and capacitor containing spherical powder
CN108274011A (en) * 2018-03-06 2018-07-13 北京工业大学 A kind of preparation method with bimodal distribution metal powder suitable for 3D printing
CN108274011B (en) * 2018-03-06 2021-05-14 北京工业大学 Preparation method of metal powder with bimodal distribution suitable for 3D printing
CN111496243A (en) * 2019-03-07 2020-08-07 安徽中体新材料科技有限公司 Method for removing satellite powder in metal powder for 3D printing
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
CN112792353A (en) * 2021-04-01 2021-05-14 陕西斯瑞新材料股份有限公司 Method for 3D printing of copper and copper alloy by using irregular powder
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