CN110385428A - A kind of high fluidity powdered metallurgical material and preparation method thereof - Google Patents
A kind of high fluidity powdered metallurgical material and preparation method thereof Download PDFInfo
- Publication number
- CN110385428A CN110385428A CN201910715349.6A CN201910715349A CN110385428A CN 110385428 A CN110385428 A CN 110385428A CN 201910715349 A CN201910715349 A CN 201910715349A CN 110385428 A CN110385428 A CN 110385428A
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- CN
- China
- Prior art keywords
- preparation
- antioxidant
- electric heating
- high fluidity
- eva
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Classifications
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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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with 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
- 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
Abstract
The present invention relates to a kind of high fluidity powdered metallurgical materials and preparation method thereof.The binder for being currently used for powder metallurgy forming needs more component to be synthesized, and the mobility of higher cost, powder metallurgy after molding is not high.Present invention be characterized in that including the raw material of following parts by weight: metal powder 30-35kg, POM:4000-5000g, PE:700-800g, polypropylene: 300-400g, EVA:100-200g and antioxidant: 250-350g.The present invention can reduce the cost of raw material, shorten procurement cycle, reduce the risk for lacking material fracture, improve the flexibility of materials'use, improve material flowability energy, realize that more high product requires or meet the production of big component product.
Description
Technical field
The present invention relates to the Material Field of manufacturing industry powder metallurgy injection molding, especially a kind of high fluidity powder metallurgy
Material and preparation method thereof.
Background technique
Material has unique mobility, and the raw material of powder metallurgy are metal powder, and metal powder is mainly by various
Raw metal resolves into fine particle and mixes the powder of composition.It must be by the binder system mixed configuration forming material that assists
Material.
The Chinese invention patent of first publication number CN 108202139 discloses a kind of metal powder injection molding feeding,
Including 2200 iron(-)base powders and forming agent, the weight ratio of 2200 iron(-)base powders and forming agent is 90 parts 10 parts to 92 of ratio
Ratio part than 8 parts is prepared, and the forming agent comprises the following components in parts by weight: 7-9 parts of paraffin；2-4 parts of optothermal stabilizer；
5-7 parts of polyethylene；3-5 parts of polyethylene glycol；5-7 parts of stearic acid；72-74 parts of polyformaldehyde, the forming agent need more component into
Row synthesis, higher cost also complicate synthesis technology step, and production efficiency is lower, the mobility of powder metallurgy after molding
Do not significantly improve.
Summary of the invention
In view of the problems of the existing technology the present invention, provides a kind of high fluidity powdered metallurgical material and its preparation side
Method can reduce the cost of raw material, shortens procurement cycle and lacks the risk of material fracture, improves material flowability energy, realize more
High product requires or meets the production of big component product.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem: a kind of high fluidity powdered metallurgical material,
It is characterized by comprising the raw materials of following parts by weight: metal powder 30-35kg, POM:4000-5000g, PE:700-800g, gathering
Propylene: 300-400g, EVA:100-200g and antioxidant: 250-350g.
POM (polyformaldehyde) molecular weight 19000-26000, is a kind of high crystallinity polymer.Have high mechanical strength and rigidity；Ring
Border repellence, organic solvent resistance are good；Resistance to repeated stock is strong；Restoration is good；It is good with lubricity, wearability；Size
Stability is excellent；With high fluidity effect.PE (polyethylene) is a kind of semi-crystalline thermoplastic, there is good guarantor's type effect,
Preferably, further including polypropylene: 300-400g, EVA:100-200g.PP (polypropylene) is propylene in catalyst
Effect is lower to occur the obtained product of polymerization reaction, is capable of the toughness of reinforcing material, improves the comprehensive performance of material.EVA (second
Alkene-acetate ethylene copolymer) have many advantages, such as good buffering, antidetonation, heat-insulated, moisture-proof, resist chemical.
Preferably, the antioxidant is 1010 antioxidant.1010 antioxidant have fine antioxygen and anti-aging effect,
Molecular formula: C73H108O12, molecular weight: 1176.
The preparation method of above-mentioned high fluidity powdered metallurgical material, it is characterised in that be first to open internally mix to be granulated electromechanical source
And heater switch, set heating temperature, after temperature reaches setting value 15 minutes, start to feed, metal powder be first added, after pour into
Polypropylene and antioxidant are mixed addition POM and PE after ten minutes and continue to stir, adds EVA, and EVA, which is added, to be kneaded 5 minutes
After start extruded material, mixing starts, and after 30 minutes, opens dust cover and upper cover, starts to be granulated.
The temperature of setting is as follows: one: 200 DEG C ± 10 DEG C of electric heating, two: 185 DEG C ± 10 DEG C of electric heating, three: 185 DEG C ± 10 of electric heating
DEG C, four: 170 DEG C ± 10 DEG C of electric heating, extrusion screw rod is inverted before charging, 20-40Hz of frequency, agitating paddle rotates forward, frequency 20-
30Hz。
When the granulation starts, area's electric heating is closed, when granulation first opens air blowing, and blow gas pressure is set as 0.3-
0.6Mpa。
Extrusion screw rod is adjusted to rotate forward when granulation, frequency sets 10~40Hz, and cutter rotating velocity frequency sets 40~50Hz,
The size of particle is controlled by adjusting screw rod revolving speed and cutter rotating velocity.
The present invention can reduce the cost of raw material, shorten procurement cycle, reduce the risk for lacking material fracture, improve materials'use
Flexibility improves material flowability energy, realizes that more high product requires or meet the production of big component product.
Specific embodiment
The technical solution in the present invention is clearly and completely described below, described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments.
In MIM industry, BASF material has good popularity, and obtains the approval of industry personage, therefore refers to BASF material
Number compares:
1 316L BASF material characteristic data of comparative example
The mechanical property of materials
| Performance project | Hardness (Hv10) | Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) |
| Performance data | 120 | 510 | 180 | 50 |
The homemade material characteristic data of the embodiment 1:316L present invention
The mechanical property of materials:
| Test number (TN) | Hardness (Hv10) | Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) |
| 1 | 121 | 497.8 | 183.96 | 49.9 |
| 2 | 123 | 499.6 | 181.6 | 50.16 |
| 3 | 120 | 500.2 | 184.09 | 51.76 |
| Average value | 121.6 | 499.2 | 183.21 | 50.61 |
The homemade powdered metallurgical material formula of the present invention:
Metal powder 33.97kg, POM (polyformaldehyde): 4500g, PE (polyethylene): 750g, PP (polypropylene): 330g, EVA
(ethylene-vinyl acetate copolymer): 150g, 1010 (antioxidant): 300g.
2 17-4PH BASF material characteristic data of comparative example
The mechanical property of materials
| Performance project | Hardness (Hv10) | Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) |
| Performance data | 320 | 950 | 720 | 6 |
Embodiment 2:17-4PHF worked materials performance data
The mechanical property of materials
| Test number (TN) | Hardness (Hv3) | Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) |
| 1 | 310 | 956 | 724.02 | 6.62 |
| 2 | 305 | 954.6 | 710.19 | 5.84 |
| 3 | 315 | 948.1 | 733.92 | 5.72 |
| Average value | 310 | 952.9 | 722.71 | 6.06 |
The homemade 17-4PH material prescription of the present invention:
Metal powder 33.58kg, POM (polyformaldehyde): 4900g, PE (polyethylene): 730g, PP (polypropylene): 360g, EVA
(ethylene-vinyl acetate copolymer): 150g, 1010 (antioxidant): 280g.
By the comparison of two above comparative example and specific embodiment, the homemade material of the present invention has aobvious in mobility
It writes and improves, therefore, the present invention can reduce the cost of raw material, shorten procurement cycle, reduce the risk for lacking material fracture, and improving material makes
Flexibility improves material flowability energy, realizes that more high product requires or meet the production of big component product.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of high fluidity powdered metallurgical material, it is characterised in that the raw material including following parts by weight: metal powder 30-
35kg, POM:4000-5000g, PE:700-800g, polypropylene: 300-400g, EVA:100-200g and antioxidant: 250-
350g。
2. a kind of high fluidity powdered metallurgical material according to claim 1, it is characterised in that the antioxidant is
1010 antioxidant.
3. a kind of preparation method of high fluidity powdered metallurgical material, it is characterised in that open internally mix granulation electromechanical source and heating is opened
Close, set heating temperature, after temperature reaches setting value 15 minutes, start to feed, metal powder be first added, after pour into polypropylene and
Antioxidant is mixed addition POM and PE after ten minutes and continues to stir, and adds EVA, and EVA, which is added to be kneaded, to be started to squeeze after five minutes
Material out, mixing start, and after 30 minutes, open dust cover and upper cover, start to be granulated.
4. preparation method according to claim 3, it is characterised in that the temperature of setting is as follows: one: 200 DEG C ± 10 of electric heating
DEG C, two: 185 DEG C ± 10 DEG C of electric heating, three: 185 DEG C ± 10 DEG C of electric heating, four: 170 DEG C ± 10 DEG C of electric heating, by extrusion screw rod before charging
Reversion, 20-40Hz of frequency, agitating paddle rotate forward, 20-30Hz of frequency.
5. the preparation method according to claim 4, it is characterised in that when the granulation starts, close area's electric heating, make
Air blowing is first opened when grain, blow gas pressure is set as 0.3-0.6Mpa.
6. preparation method according to claim 5, it is characterised in that be adjusted to rotate forward by extrusion screw rod when granulation, frequency is set
Fixed 10~40Hz, cutter rotating velocity frequency set 40~50Hz, the big of particle are controlled by adjusting screw rod revolving speed and cutter rotating velocity
It is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715349.6A CN110385428A (en) | 2019-08-05 | 2019-08-05 | A kind of high fluidity powdered metallurgical material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715349.6A CN110385428A (en) | 2019-08-05 | 2019-08-05 | A kind of high fluidity powdered metallurgical material and preparation method thereof |
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| CN110385428A true CN110385428A (en) | 2019-10-29 |
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| CN201910715349.6A Pending CN110385428A (en) | 2019-08-05 | 2019-08-05 | A kind of high fluidity powdered metallurgical material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922346A (en) * | 2020-07-31 | 2020-11-13 | 兰州金浩机械制造有限公司 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11343503A (en) * | 1998-06-01 | 1999-12-14 | Mold Research:Kk | Composition for injection molding of metal powder, injection molding and sintering method using the composition |
| CN107866559A (en) * | 2017-10-17 | 2018-04-03 | 昆山纳诺新材料科技有限公司 | A kind of stable type injection moulding stainless steel feeding and preparation method thereof |
| 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 |
| CN109794601A (en) * | 2019-01-03 | 2019-05-24 | 深圳市众德祥科技有限公司 | A kind of metal powder injection molding uses feeding and preparation method thereof with high circulation |
-
2019
- 2019-08-05 CN CN201910715349.6A patent/CN110385428A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11343503A (en) * | 1998-06-01 | 1999-12-14 | Mold Research:Kk | Composition for injection molding of metal powder, injection molding and sintering method using the composition |
| CN107866559A (en) * | 2017-10-17 | 2018-04-03 | 昆山纳诺新材料科技有限公司 | A kind of stable type injection moulding stainless steel feeding and preparation method thereof |
| 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 |
| CN109794601A (en) * | 2019-01-03 | 2019-05-24 | 深圳市众德祥科技有限公司 | A kind of metal powder injection molding uses feeding and preparation method thereof with high circulation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922346A (en) * | 2020-07-31 | 2020-11-13 | 兰州金浩机械制造有限公司 | Feeding binder for Kowa alloy injection molding and preparation method thereof |
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Application publication date: 20191029 |