CN108393483A - A kind of metal powder injection molding feeding and preparation method thereof - Google Patents
A kind of metal powder injection molding feeding and preparation method thereof Download PDFInfo
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- CN108393483A CN108393483A CN201710067167.3A CN201710067167A CN108393483A CN 108393483 A CN108393483 A CN 108393483A CN 201710067167 A CN201710067167 A CN 201710067167A CN 108393483 A CN108393483 A CN 108393483A
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- powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- 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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic 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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of metal powder injection molding feeding and preparation method thereof, it is characterized in that the feeding is made after mixing of thick, thin two kinds varigrained spherical metal prilling powders；Wherein ranging from 75 ~ 180 microns of coarse granularity, ranging from 25 ~ 58 microns of powder particle size；The ratio of coarse powder and fine powder is（60~80）：（20~40）.Metal powder and surfactant, organic binder, plasticizer, lubricant and organic solvent etc. by granularity less than 5 microns uniformly mix, and metal paste is made；Metal paste obtains coarse powder and fine powder after mist projection granulating, classification；Coarse powder and fine powder are obtained into metal powder injection molding feeding after mixing according to the above ratio.Compared with prior art; metal powder injection molding prepared by present invention feeding has the characteristics that big sphericity height, good fluidity, apparent density, injection-molded product easy-sintering, simple production process, is suitble to large-scale production, meets requirement of the metal powder injection molding for high-performance feeding.
Description
Technical field
The invention belongs to metal powder injection molding fields, and in particular to be a kind of metal powder injection molding feeding
And preparation method thereof.
Background technology
Metal Injection Molding is collection plastics molding process, polymer chemistry, powder metallurgy technology and gold
It is multidisciplinary with the product intersected to belong to materialogy etc., is quickly manufactured using mold injection moldable blank and by sintering highly dense
The constitutional detail of degree, high-precision, three-dimensional complex shapes.The technology not only has that conventional powder metallurgical technique process is few, nothing
The advantages that cutting or few cutting, high financial profit, and it is uneven, mechanical to overcome prior powder metallurgy handicraft, material
The shortcomings that performance is low, it is forming thin-walled to be not easy, labyrinth, it is small-sized, complicated and with special particularly suitable for producing in enormous quantities
It is required that metal parts.
The key of Metal Injection Molding is the feeding for having excellent performance, traditional feeding preparation method be by
Solid powder is uniformly kneaded with organic binder, through crushing or being cut into particle or powdery feeding.Chinese patent
CN201010616966.X discloses a kind of method for the particulate material preparing metal injection molding technology, and raw mixture is thrown
Enter into kneading machine or mixer, the particulate material of 1.5 ~ 3.5mm of diameter, 1 ~ 3mm of length are cut into after being kneaded uniformly.It is Chinese special
Sharp CN201010574711.1 discloses a kind of preparation method of metal powder injection molding feeding, and raw mixture is through mixed
It closes, squeeze out, cooling is crushed and the processes such as vacuum packaging produce injection moulding feeding.
It is investigated from the prior art it is found that the production of feeding mostly uses 15 ~ 50 microns of metal-powder conduct in industrial production
Raw material, sintering activity are low；Feed pellet can be used double screw extruder and cutting machine and prepare, feeding granularity is big, it is in irregular shape,
Poor fluidity；Feeding powder can be used kneading machine or mixer and pulverizer and prepare, and feeding granularity is small, in irregular shape, stream
Dynamic property is also bad；Twin-screw, kneading machine or mixer mixing time are short, feeding lack of homogeneity.Lack of homogeneity and sintering activity are low
Feeding make later product sintering difficult, product quality cannot ensure；The feeding of poor fluidity makes in process of injection molding
Frequent putty, continuous production are limited.The high feeding of good fluidity, sintering activity is prepared for metal powder injection molding meaning
It is great.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide, a kind of sphericity is high, mobility
Metal powder injection molding feeding and preparation method thereof good, apparent density is big, high uniformity and sintering activity are good.
The present invention solve technical problem the technical solution adopted is that：A kind of metal powder injection molding feeding, the feeding
It is made after mixing of thick, thin two kinds varigrained spherical metal prilling powders；Wherein coarse granularity ranging from 75 ~ 180
Micron, ranging from 25 ~ 58 microns of powder particle size；The ratio of coarse powder and fine powder is（60~80）：（20~40）.
Metal powder injection molding feeding of the present invention, coarse powder therein are spherical granulation powder, are with metal powder
Raw material is made through mist projection granulating；Coarse powder the largest particles is no more than 200 microns, and particle of the granularity more than 180 microns is no more than 1%, grain
Particle of the degree less than 75 microns is no more than 2%.
Metal powder injection molding feeding of the present invention, fine powder therein are spherical granulation powder, are with metal powder
Raw material is made through mist projection granulating；Fine powder the largest particles is no more than 65 microns, and particle of the granularity more than 58 microns is no more than 1%, granularity
Particle less than 25 microns is no more than 2%.
The present invention also provides a kind of preparation method of metal powder injection molding feeding, specific preparation process includes：
（1）Metal powder is uniformly mixed with organic binder and organic solvent using mixing apparatus, metal powder slurry is made；
（2）By step（1）Spherical metal pelletizing is made by closed cycle spray comminutor in the metal powder slurry of gained；
（3）Using vibrating screen to step（2）The spherical metal pelletizing of gained is sieved, and selects particle size range micro- for 75 ~ 180
The spherical metal pelletizing of rice is as coarse powder；
（4）Using powder separator or vibrating screen to step（2）The spherical metal pelletizing of gained is sorted or is sieved, selection
The spherical metal pelletizing that particle size range is 25 ~ 58 microns is as fine powder；
（5）Coarse powder and fine powder are pressed（60~80）：（20~40）Ratio weigh, the present invention is obtained using mixing machine after mixing
Metal powder injection molding feeding.
Preferably, step of the present invention（1）Middle mixing apparatus is one kind in blender, liquid mixer or ball mill.
Preferably, step of the present invention（1）In metal powder be at least in elemental metals powder, alloyed powder or mixed metal powder
One kind；The granularity of metal powder is less than 5 microns in metal powder slurry, and wherein particle of the granularity more than 5 microns is less than 1%；Metal powder
Ratio with organic solvent is：（100~600）：100.
Preferably, step of the present invention（1）In organic binder by polyurethane termoplastic elastomer, polyvinyl alcohol contracting fourth
Aldehyde, paraffin, dibutyl phthalate and silane coupling agent mixing composition, each component mass percent are as follows：Polyurethane thermal-plastic
It is property elastomer 25 ~ 40%, polyvinyl butyral 15 ~ 30%, paraffin 20 ~ 50%, dibutyl phthalate 5 ~ 10%, silane coupled
Agent 5 ~ 10%；The ratio of organic binder and metal powder is：（7.5~18）：100.
Preferably, step of the present invention（1）In organic solvent be at least acetone, butanone, cyclohexanone, tetrahydrofuran, first
One kind in benzene and dimethylbenzene.
With the prior art and compared with, the present invention has the following advantages and beneficial effects：
1, metal powder injection molding feeding of the invention, with thick, thin two kinds of different grain sizes spherical metal pelletizing of preparation
For raw material, spherical powder ensure that the mobility that powder has had；Slightly, the optimization of thin two kinds of granularity powders proportioning, ensure that gold
Belonging to powder has high apparent density；Excessive and excessively short grained grain size and content in coarse powder and fine powder are controlled, powder has been effectively ensured
The mobility and bulk density of body.
2, the preparation method of metal powder injection molding feeding of the invention controls metal-powder granularity in metal paste
Less than 5 microns, original particle size is small, sintering activity is high；Metal paste is prepared using blender, mixing machine or ball mill, effectively
Improve the mixing uniformity between organic binder and metal powder；Using closed cycle spray comminutor, it is therefore prevented that metal powder
The oxidation of body, particle sphericity height, the good fluidity of preparation；Thick, fine powder is prepared by vibrating screen and gas grader, effectively
Control the particle size range of powder, simple production process, it is at low cost, be suitble to large-scale production；It is prepared using dry powder blender mixed
Powder is closed, the destruction to morphology microstructure is avoided, ensure that sphericity.
Description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of 1 metal powder injection molding feeding of embodiment.
Fig. 2 is the scanning electron microscope (SEM) photograph of 2 metal powder injection molding feeding of embodiment.
Fig. 3 is the scanning electron microscope (SEM) photograph of 3 metal powder injection molding feeding of embodiment.
Specific implementation mode
It is the specific implementation case of the present invention below, notices that these cases are merely to illustrate the present invention rather than limitation originally
The range of invention.
Embodiment 1：
Using blender by carbonyl iron dust（Granularity is less than 5 microns, and D90 is 2.33 microns）, organic binder and organic solvent it is mixed
Uniformly metal powder slurry is made in conjunction.Wherein, organic solvent be acetone and dimethylbenzene, carbonyl iron dust, acetone and dimethylbenzene quality
Than being 100:50:50；The mass ratio of carbonyl iron dust and organic binder is 100:18, each component quality percentage in organic binder
Than as follows：Polyurethane termoplastic elastomer 25%, polyvinyl butyral 15%, paraffin 50%, dibutyl phthalate 5%, silicon
Alkane coupling agent 5%.
Spherical metal pelletizing is made by closed cycle spray comminutor in metal powder slurry；Using vibrating screen to spherical shape
Metal pelletizing is sieved, and it is 75 ~ 180 microns of spherical metal pelletizing as coarse powder to select particle size range；Using powder
Grader sorts metal pelletizing, and it is 25 ~ 58 microns of spherical metal pelletizing as fine powder to select particle size range.
Coarse powder and fine powder are pressed 60：40 ratio weighs, and obtains the gold of the present invention after mixing using dry powder blender
Belong to powder injection-molded feeding, which is 4.14 g/cm3, and powder fluidity is 15.8 s/50g.
Embodiment 2：
Using liquid mixer by FeNi alloyed powders（Granularity is less than 5 microns, and D90 is 2.71 microns）, organic binder and organic
Solvent is uniformly mixed and metal powder slurry is made.Wherein, organic solvent is butanone and toluene, FeNi alloyed powders, butanone and toluene
Mass ratio is 600:50:50；The mass ratio of FeNi alloyed powders and organic binder is 100:7.5, each component in organic binder
Mass percent is as follows：Polyurethane termoplastic elastomer 40%, polyvinyl butyral 30%, paraffin 20%, two fourth of phthalic acid
Ester 5%, silane coupling agent 5%.
Spherical metal pelletizing is made by closed cycle spray comminutor in metal powder slurry；Using vibrating screen to spherical shape
Metal pelletizing is sieved, and it is 75 ~ 180 microns of spherical metal pelletizing as coarse powder to select particle size range；Using vibration
Sieve sieves metal pelletizing, and it is 25 ~ 58 microns of spherical metal pelletizing as fine powder to select particle size range.
Coarse powder and fine powder are pressed 80：20 ratio weighs, and obtains the gold of the present invention after mixing using dry powder blender
Belong to powder injection-molded feeding, which is 4.56 g/cm3, and powder fluidity is 11.2 s/50g.
Embodiment 3：
Using ball mill by Fe, Ni and Mo mixed metal powder（Fe：Ni：Mo=81.5:18:0.5）, organic binder and organic molten
Metal powder slurry is uniformly made in agent ball milling mixing（Metal powder granularity is less than 5 microns after ball milling, and D90 is 2.67 microns）.Wherein, have
Solvent is cyclohexanone and tetrahydrofuran, and the mass ratio of mixed metal powder, cyclohexanone and tetrahydrofuran is 300:50:50；Mixing
The mass ratio of metal powder and organic binder is 100:12, each component mass percent is as follows in organic binder：Polyurethane heat
Thermoplastic elastic 25%, polyvinyl butyral 15%, paraffin 40%, dibutyl phthalate 10%, silane coupling agent 10%.
Spherical metal pelletizing is made by closed cycle spray comminutor in metal powder slurry；Using vibrating screen to spherical shape
Metal pelletizing is sieved, and it is 75 ~ 180 microns of spherical metal pelletizing as coarse powder to select particle size range；Using powder
Grader sorts metal pelletizing, and it is 25 ~ 58 microns of spherical metal pelletizing as fine powder to select particle size range.
Coarse powder and fine powder are pressed 70：30 ratio weighs, and obtains the gold of the present invention after mixing using dry powder blender
Belong to powder injection-molded feeding, which is 4.47g/cm3, and powder fluidity is 13.2 s/50g.
Claims (8)
1. a kind of metal powder injection molding feeding, it is characterised in that：The feeding is by thick, thin two kinds varigrained spherical gold
Belong to prilling powder to be made after mixing；Wherein ranging from 75 ~ 180 microns of coarse granularity, powder particle size ranging from 25 ~ 58 is micro-
Rice；The ratio of coarse powder and fine powder is（60~80）：（20~40）.
2. metal powder injection molding feeding as described in claim 1, it is characterised in that：Coarse powder is spherical granulation powder, with
Metal powder is made of raw material through mist projection granulating；Coarse powder the largest particles is no more than 200 microns, and particle of the granularity more than 180 microns is not
More than 1%, particle of the granularity less than 75 microns is no more than 2%.
3. metal powder injection molding feeding as described in claim 1, it is characterised in that：Fine powder is spherical granulation powder, with
Metal powder is made of raw material through mist projection granulating；Fine powder the largest particles is no more than 65 microns, and particle of the granularity more than 58 microns does not surpass
1% is crossed, particle of the granularity less than 25 microns is no more than 2%.
4. a kind of preparation method of metal powder injection molding feeding, it is characterised in that include the following steps：
（1）Metal powder is uniformly mixed with organic binder and organic solvent using mixing apparatus, metal powder slurry is made；
（2）By step（1）Spherical metal pelletizing is made by closed cycle spray comminutor in the metal powder slurry of gained；
（3）Using vibrating screen to step（2）The spherical metal pelletizing of gained is sieved, and selects particle size range micro- for 75 ~ 180
The spherical metal pelletizing of rice is as coarse powder；
（4）Using powder separator or vibrating screen to step（2）The spherical metal pelletizing of gained is sorted or is sieved, selection
The spherical metal pelletizing that particle size range is 25 ~ 58 microns is as fine powder；
（5）Coarse powder and fine powder are pressed（60~80）：（20~40）Ratio weigh, the present invention is obtained using mixing machine after mixing
Metal powder injection molding feeding.
5. the preparation method of metal powder injection molding feeding according to claim 4, it is characterised in that step（1）In
Mixing apparatus is one kind in blender, liquid mixer or ball mill.
6. the preparation method of metal powder injection molding feeding according to claim 4, it is characterised in that step（1）In
Metal powder be at least one kind in elemental metals powder, alloyed powder or mixed metal powder；The granularity of metal powder in metal powder slurry
Less than 5 microns, wherein particle of the granularity more than 5 microns is less than 1%；The ratio of metal powder and organic solvent is：（100~600）：
100。
7. the preparation method of metal powder injection molding feeding according to claim 4, it is characterised in that step（1）In
Organic binder it is even by polyurethane termoplastic elastomer, polyvinyl butyral, paraffin, dibutyl phthalate and silane
Join agent mixing composition, each component mass percent is as follows：Polyurethane termoplastic elastomer 25 ~ 40%, polyvinyl butyral 15 ~
30%, paraffin 20 ~ 50%, dibutyl phthalate 5 ~ 10%, silane coupling agent 5 ~ 10%；The ratio of organic binder and metal powder
For：（7.5~18）：100.
8. the preparation method of metal powder injection molding feeding according to claim 4, it is characterised in that step（1）In
Organic solvent be at least one kind in acetone, butanone, cyclohexanone, tetrahydrofuran, toluene and dimethylbenzene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710067167.3A CN108393483A (en) | 2017-02-07 | 2017-02-07 | A kind of metal powder injection molding feeding and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710067167.3A CN108393483A (en) | 2017-02-07 | 2017-02-07 | A kind of metal powder injection molding feeding and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465454A (en) * | 2019-01-11 | 2019-03-15 | 合肥工业大学 | A kind of the injection moulding feeding and preparation method of the powder of stainless steel based on surface with epoxy-functional |
| CN109513916A (en) * | 2018-12-04 | 2019-03-26 | 深圳市众德祥科技有限公司 | A kind of high fluidity metal powder injection molding feeding and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH093510A (en) * | 1995-06-22 | 1997-01-07 | Fukuda Metal Foil & Powder Co Ltd | Copper powder for injection-molding of metallic powder and production of injection-molded product using the same |
| CN101157993A (en) * | 2007-11-08 | 2008-04-09 | 北京科技大学 | Method for preparing high volume-fraction carborundum granule-reinforced copper-based composite material |
| CN101176920A (en) * | 2007-11-22 | 2008-05-14 | 上海交通大学 | Method for preparing active metal titanium and boron carbide complex spherical hot spraying powder |
| CN102560223A (en) * | 2012-02-29 | 2012-07-11 | 北京科技大学 | Method for forming bonded iron-based powder by high velocity compaction technology |
| CN103130499A (en) * | 2011-11-30 | 2013-06-05 | 深圳市大富科技股份有限公司 | Preparation method of microwave dielectric ceramics materials |
| CN103740979A (en) * | 2013-12-30 | 2014-04-23 | 安泰科技股份有限公司 | Preparation method of molybdenum titanium alloy material with high density, large size and high homogeneity |
| CN103981436A (en) * | 2014-06-06 | 2014-08-13 | 海安县鹰球粉末冶金有限公司 | Metal powder injection molded high-strength martensite aged steel and preparation method thereof |
| CN104844220A (en) * | 2015-05-26 | 2015-08-19 | 北京科技大学 | Injection molding method for nano aluminum nitride ceramics |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
-
2017
- 2017-02-07 CN CN201710067167.3A patent/CN108393483A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH093510A (en) * | 1995-06-22 | 1997-01-07 | Fukuda Metal Foil & Powder Co Ltd | Copper powder for injection-molding of metallic powder and production of injection-molded product using the same |
| CN101157993A (en) * | 2007-11-08 | 2008-04-09 | 北京科技大学 | Method for preparing high volume-fraction carborundum granule-reinforced copper-based composite material |
| CN101176920A (en) * | 2007-11-22 | 2008-05-14 | 上海交通大学 | Method for preparing active metal titanium and boron carbide complex spherical hot spraying powder |
| CN103130499A (en) * | 2011-11-30 | 2013-06-05 | 深圳市大富科技股份有限公司 | Preparation method of microwave dielectric ceramics materials |
| CN102560223A (en) * | 2012-02-29 | 2012-07-11 | 北京科技大学 | Method for forming bonded iron-based powder by high velocity compaction technology |
| CN103740979A (en) * | 2013-12-30 | 2014-04-23 | 安泰科技股份有限公司 | Preparation method of molybdenum titanium alloy material with high density, large size and high homogeneity |
| CN103981436A (en) * | 2014-06-06 | 2014-08-13 | 海安县鹰球粉末冶金有限公司 | Metal powder injection molded high-strength martensite aged steel and preparation method thereof |
| CN104844220A (en) * | 2015-05-26 | 2015-08-19 | 北京科技大学 | Injection molding method for nano aluminum nitride ceramics |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513916A (en) * | 2018-12-04 | 2019-03-26 | 深圳市众德祥科技有限公司 | A kind of high fluidity metal powder injection molding feeding and preparation method thereof |
| CN109513916B (en) * | 2018-12-04 | 2021-02-19 | 深圳市众德祥科技有限公司 | High-fluidity metal powder injection molding feed and preparation method thereof |
| CN109465454A (en) * | 2019-01-11 | 2019-03-15 | 合肥工业大学 | A kind of the injection moulding feeding and preparation method of the powder of stainless steel based on surface with epoxy-functional |
| CN109465454B (en) * | 2019-01-11 | 2020-10-16 | 合肥工业大学 | Injection molding feed based on stainless steel powder with epoxy functional groups on surface |
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