CN107199334A - 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
- Publication number
- CN107199334A CN107199334A CN201710261120.0A CN201710261120A CN107199334A CN 107199334 A CN107199334 A CN 107199334A CN 201710261120 A CN201710261120 A CN 201710261120A CN 107199334 A CN107199334 A CN 107199334A
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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
- B22F1/10—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
- 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
- B22F1/108—Mixtures obtained by warm mixing
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of metal powder injection molding feeding and preparation method thereof, the feeding includes binder and 316L stainless steel feeding powder, and the mass ratio of the binder and the 316L stainless steels feeding powder is 96：4~90：10；The 316L stainless steels feeding powder includes the component of following mass percent：316L powder of stainless steel 90%~99%, chromium carbide powder 1%~10%, the binder includes the component of following mass percent：Paraffin 5%~10%, ethene 5%~10%, polyethylene 5%~10%, polyethylene glycol 5%~10%, polyformaldehyde 75%~80%.The metal powder injection molding feeding is used in MIM techniques, as MIM feedings, the structural member product met needed for various 3C electronic equipments, and the properties of product with high rigidity high-quality can be gone out with processing and fabricating.
Description
Technical field
The present invention relates to a kind of metal powder injection molding feeding and preparation method thereof.
Background technology
With the continuous progress of social science and technology and flourishing for global industry, powder metallurgy due to its many advantages,
Industry is developed rapidly, and its technology has been widely used in the fields such as military affairs, traffic, machinery, electronics, space flight, aviation.
MIM (metal powder injection molded) feeding is core process prepared by metal injection molding product, is by metal powder
End and additive at a certain temperature, carry out the mixing of a period of time temperature in mixing granulation all-in-one according to a certain percentage,
Granulation is cut by Screw Extrusion again, injection moulding feeding is made.
Wherein 316L stainless steels (such as SUS316L stainless steels) feeding, because the fabricated part corrosion resistance and the polishing that are made are imitated
It is really good, extensively favored by each IT electronics industry client, be widely used in each electronic product part.But due to 316L stainless steel materials
Hardness is relatively low, limits application of the big part 316L stainless steel parts on electronic product, with continuing to develop for social science and technology,
The hardness of common 316L stainless steels can not meet all customer demands, and SUS316L stainless steels are due to than it on structural member
His stainless steel material is all softer to be easily deformed, it is impossible to high volume applications.Under the overall situation of this Market competition, it is badly in need of out
Send a kind of metal powder injection molded stainless steel feeding of high rigidity high-quality.
The content of the invention
It is a primary object of the present invention to overcoming the deficiencies in the prior art there is provided a kind of metal powder injection molding feeding and
Its preparation method.
To achieve the above object, the present invention uses following technical scheme：
A kind of metal powder injection molding feeding, including binder and 316L stainless steel feeding powder, the binder and
The mass ratio of the 316L stainless steels feeding powder is 96: 4~90: 10；
The 316L stainless steels feeding powder includes the component of following mass percent：
316L powder of stainless steel：90%~99%
Chromium carbide powder：1%~10%
The binder includes the component of following mass percent：
Further：
The 316L powder of stainless steel is SUS316L powder of stainless steel.
The 316L powder of stainless steel and the chromium carbide powder meet following specification：
The mesh of 316L powder of stainless steel -500
The mesh of chromium carbide powder -800.
A kind of preparation method of described metal powder injection molding feeding, comprises the following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization.
Further：
In step S1, the stainless steel feeding powder is preheating to predetermined temperature to exclude the aqueous vapor in powder, preferably added
Heat is to 200 DEG C.
In step S2, the binder is added at a temperature of more than 170 DEG C and is kneaded.
In step S2,185 DEG C of keeping temperature, rotating speed 20r/min is kneaded and is stopped heating after 30min, is further continued for mixing
30min。
A kind of method that product is made using described metal powder injection molding feeding, is comprised the following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization；
S4. the product is obtained using the feeding progress injection moulding, degreasing, sintering MIM PROCESS FOR TREATMENTs of granulation.
Further：
In step S4, to injection molding member degreasing, make to carry out vacuum-sintering after total mass loss rate >=7.5%, sintering temperature
1360 DEG C of degree, soaking time 3 hours.
A kind of product, is the product being made by described metal powder injection molding feeding by MIM techniques.
Preferably, the product is 3C Electronic Equipment Structural Members.
Beneficial effects of the present invention：
The metal powder injection molding feeding that the present invention is provided is using specific formula, wherein binder and 316L stainless steels
The mass ratio of feeding powder is 96: 4~90: 10, and the 316L stainless steel feedings powder includes mass percent 90%~99%
316L powder of stainless steel and 1%~10% chromium carbide powder, the binder include the full refining of mass percent 5%~10%
Paraffin, 5%~10% ethene, 5%~10% polyethylene, 5%~10% polyethylene glycol, 75%~80% poly- first
Aldehyde, MIM techniques are used in by the metal powder injection molding feeding, as MIM feedings, can go out to meet various 3C electricity with processing and fabricating
Structural member product needed for sub- equipment, and the properties of product with high rigidity high-quality.Experiments verify that, using inventive formulation
SUS316L feedings, the hardness of MIM products strengthens up to more than 40% than the MIM products of common SUS316L feedings, effectively solves
The problem of SUS316L material parts big part thin pieces is easily deformed, model is applied in the market for expanding the part of SUS316L materials
Enclose.Due to product hardness lifting, it is unlikely to deform, meets the intensity requirement of the big part products of 316L, particularly lifts SUS316L products
Application on consumer electronics product.
Brief description of the drawings
Fig. 1 show the instance graph of the MIM molded blanks using metal powder injection molding feeding of the present invention；
Fig. 2 show the instance graph of product after the MIM sintering using metal powder injection molding feeding of the present invention.
Embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary,
The scope being not intended to be limiting of the invention and its application.
In one embodiment, a kind of metal powder injection molding feeding, including binder and 316L stainless steel feeding powder
The mass ratio of end, the binder and the 316L stainless steels feeding powder is 96: 4~90: 10；
The 316L stainless steels feeding powder includes the component of following mass percent：
316L powder of stainless steel：90%~99%
Chromium carbide powder：1%~10%
The binder includes the component of following mass percent：
In a preferred embodiment, the 316L powder of stainless steel is SUS316L powder of stainless steel.
In a preferred embodiment, the 316L powder of stainless steel and the chromium carbide powder meet following specification：
The mesh of 316L powder of stainless steel -500
The mesh of chromium carbide powder -800.
In one embodiment, a kind of preparation method of described metal powder injection molding feeding, comprises the following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization.
In a preferred embodiment, in step S1, the stainless steel feeding powder is preheating to predetermined temperature to exclude powder
In aqueous vapor, it is further preferred that being heated to 200 DEG C of predetermined temperatures.
In a preferred embodiment, in step S2, the binder is added at a temperature of more than 170 DEG C and is kneaded.
In a preferred embodiment, in step S2,185 DEG C of keeping temperature, rotating speed 20r/min is kneaded and is stopped adding after 30min
Heat, is further continued for kneading 30min.
In one embodiment, a kind of method that product is made using described metal powder injection molding feeding, including
Following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization；
S4. the product is obtained using the feeding progress injection moulding, degreasing, sintering MIM PROCESS FOR TREATMENTs of granulation.
In a preferred embodiment, in step S4, to injection molding member degreasing, make to carry out after total mass loss rate >=7.5%
Vacuum-sintering, 1360 DEG C of sintering temperature, soaking time 3 hours.
A kind of specific preferred sintering control program is as shown in table 1.
Table 1
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | |
| T, min | 0 | 180 | 240 | 300 | 330 | 390 | 420 | 520 | 570 | 630 | 810 | 870 | 960 |
| Ts, DEG C | 0 | 600 | 600 | 800 | 800 | 1050 | 1050 | 1300 | 1300 | 1360 | 1360 | 900 | 0 |
| N2, L/min | 0 | 900 | 900 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1500 |
| Ar, Pa | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 500 | 500 | 500 | 500 | 500 | 0 |
Wherein 1~13 is expressed as program segment, starts to warm up (1 section) from starting device, is come out of the stove to the cooling that program has been run
(13 sections)；T, min are represented from starting device to the cumulative time for having run the program, are run altogether how many minutes and are terminated this section of journey
Sequence；Numerical value in Ts, DEG C expression present segment program setting temperature, temperature rise period, even number section needs to rise after for this program segment terminating
The temperature that numerical value in the temperature that temperature is arrived, odd number section needs to keep for this program segment, temperature-fall period, numerical value is that this program segment terminates
When need the temperature that drops to；N2, L/min represent that pure nitrogen gas (purity more than 99%) is per minute and how many liter are passed through；Ar, pa represent logical
Cross and be passed through argon gas to control the sintering pressure handkerchief in vacuum sintering furnace.
In one embodiment, a kind of product, is to be made by described metal powder injection molding feeding by MIM techniques
Product.
In a preferred embodiment, the product can be 3C Electronic Equipment Structural Members.
In certain embodiments, a kind of metal powder injection molding feeding preparation method, comprises the following steps：
S1, startup kneader, Stirring main frame (5r/1min), adds SUS316L powder of stainless steel and chromium carbide at a slow speed
Proportioning material, is preheating to 200 DEG C of exclusion powder aqueous vapors；
S2, after 1 hour, with laser infrared line temperature measurer, powder temperature is detected, when detection temperature is more than 170 DEG C, by powder
The percentage of weight adds the forming agent prepared, and reduction temperature is to 185 DEG C, and adjustment rotating speed to 20r/1min continues kneading mixing
Feeding；
S3, mixing rotating speed temperature are kept after 30min, close melting temperature, continue to knead after 30min, and extrusion granulator is obtained
SUS316L injection moulding feedings after hardening.
Exemplary embodiments
The SUS316L powder of stainless steel injection moulding feedings of the embodiment of the present invention are prepared, and MIM productions are prepared with the feeding
Product.
1. taking SUS316L powder 4300g, chromium carbide powder 200g, it is put into kneading machine heating and is preheated to 200 DEG C, startup
Rotary machine is mediated after stirring system (5r/1min), 30min at a slow speed for regulation, is detected powder temperature, is added fully refined paraffin wax 25g,
Ethene 50g, polyethylene 40g, polyethylene glycol 45g, polyformaldehyde 375g, reduction design temperature heighten rotating speed to (20r/ to 185 DEG C
1min), continue to mediate stirring mixing 30min, turn off device temperature, then keep kneading 30min, extrusion granulator is made after hardening
SUS316L injection moulding feedings；
2. by using injector, the feeding high pressure after hardening is injected standard strip sample molds (product size：100*
Standard strip sample blank 10*3) is obtained, as shown in Figure 1；
3. sample blank is carried out into catalysis degreasing, measure after degreasing sample total mass loss rate >=7.5%, product is carried out
Vacuum-sintering, 1360 DEG C of sintering temperature, soaking time 3 hours, the product after being sintered, as shown in Figure 2；
4. taking the sample products sintered, detected firmly, measure vickers hardness hv 250-280；
Typical comparison's example：
Traditional SUS316L injection moulding feedings are prepared, and MIM products are prepared with the feeding.
1. taking the common SUS316L feedings of 5KG, by using injector, feeding high pressure is injected standard strip sample molds
(product size：Sample 100*10*3) is obtained, molded blank sample rate is 5.45g/cm3；
2. blank sample is carried out into catalysis degreasing, measure after degreasing sample total mass loss rate >=7.5%, product is carried out
Vacuum-sintering, 1360 DEG C of sintering temperature, soaking time 2.5 hours；
Rear outturn sample is sintered 3. taking, is detected firmly, sample vickers hardness hv 120-180 is measured.
The parameter comparison such as table 2 below and table 3 for the outturn sample that multiple embodiments are sintered with comparative example.
The 316L standard batten parameters of the conventional formulation of table 2
The 316L standard batten parameters of the embodiment of the present invention of table 3
By detection, obtained SUS316L feeding products, its hardness (Vickers HV) ratio are made by using the method for the present invention
Product prepared by conventional method can improve more than 40%.
Above content is to combine specific/preferred embodiment made for the present invention be further described, it is impossible to recognized
The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, it can also make some replacements or modification to the embodiment that these have been described,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of metal powder injection molding feeding, it is characterised in that described including binder and 316L stainless steel feeding powder
The mass ratio of binder and the 316L stainless steels feeding powder is 96：4~90：10；
The 316L stainless steels feeding powder includes the component of following mass percent：
316L powder of stainless steel：90%~99%
Chromium carbide powder：1%~10%
The binder includes the component of following mass percent：
2. metal powder injection molding feeding as claimed in claim 1, it is characterised in that the 316L powder of stainless steel is
SUS316L powder of stainless steel.
3. metal powder injection molding feeding as claimed in claim 1 or 2, it is characterised in that the 316L powder of stainless steel
Following specification is met with the chromium carbide powder：
The mesh of 316L powder of stainless steel -500
The mesh of chromium carbide powder -800.
4. a kind of preparation method of metal powder injection molding feeding as described in any one of claims 1 to 3, its feature exists
In comprising the following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization.
5. the preparation method of metal powder injection molding feeding as claimed in claim 4, it is characterised in that in step S1, will
The stainless steel feeding powder is preheating to predetermined temperature to exclude the aqueous vapor in powder, is preferably heated to 200 DEG C.
6. the preparation method of metal powder injection molding feeding as claimed in claim 4, it is characterised in that in step S2,
The binder is added at a temperature of more than 170 DEG C and is kneaded.
7. the preparation method of metal powder injection molding feeding as claimed in claim 6, it is characterised in that in step S2, is protected
Stop heating after holding 185 DEG C of temperature, rotating speed 20r/min, mixing 30min, be further continued for kneading 30min.
8. a kind of method that metal powder injection molding feeding using as described in any one of claims 1 to 3 makes product, its
It is characterised by, comprises the following steps：
S1. the stainless steel feeding powder is added in kneading machine and preheated；
S2. the binder added according to proportioning, is kneaded；
S3. extruding pelletization；
S4. the product is obtained using the feeding progress injection moulding, degreasing, sintering MIM PROCESS FOR TREATMENTs of granulation.
9. method as claimed in claim 8, it is characterised in that in step S4, to injection molding member degreasing, makes total mass loss
Vacuum-sintering, 1360 DEG C of sintering temperature, soaking time 3 hours are carried out after rate >=7.5%.
10. a kind of product, it is characterised in that be as the metal powder injection molding feeding as described in any one of claims 1 to 3
The product being made by MIM techniques, it is preferable that the product is 3C Electronic Equipment Structural Members.
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| CN201710261120.0A CN107199334A (en) | 2017-04-20 | 2017-04-20 | A kind of metal powder injection molding feeding and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097970A (en) * | 2017-12-28 | 2018-06-01 | 东莞华晶粉末冶金有限公司 | Metal powder injection molding feeding and preparation method thereof |
| CN108202139A (en) * | 2017-12-28 | 2018-06-26 | 东莞华晶粉末冶金有限公司 | Metal powder injection molding feeding and preparation method thereof |
| CN109047749A (en) * | 2018-07-18 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | The preparation method of environment-friendly type cemented carbide powder feeding and hard alloy components |
| CN109047750A (en) * | 2018-07-18 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | The preparation method of 310 powder of stainless steel feeding of environment-friendly type and 310 powder of stainless steel components |
| CN109047753A (en) * | 2018-09-04 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | A kind of preparation method suitable for mobile phone center MIM stainless steel feeding and its product |
| CN110052600A (en) * | 2019-06-04 | 2019-07-26 | 苏州卓米智能制造科技有限公司 | A kind of processing method of MIM feeding |
| CN111390185A (en) * | 2020-04-14 | 2020-07-10 | 东莞市金材五金有限公司 | Production method of titanium alloy part |
| CN114737117A (en) * | 2022-03-31 | 2022-07-12 | 广东潮艺金属实业有限公司 | High-hardness and high-rust-resistance stainless steel 316L and sintering process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407610A (en) * | 2008-10-30 | 2009-04-15 | 嘉兴市瑞德材料科技有限公司 | Metallic powder injection molding adhesive |
| CN102115606A (en) * | 2010-12-06 | 2011-07-06 | 常州精研科技有限公司 | Adhesive and method for preparing metal powder injection molding feedstock from same |
| JP2014131054A (en) * | 2011-08-31 | 2014-07-10 | Toshiba Corp | Magnetic material |
| CN105372159A (en) * | 2015-12-10 | 2016-03-02 | 翁廷 | Method for detecting metal powder feedstock fluidity based on Archimedes spiral mold |
-
2017
- 2017-04-20 CN CN201710261120.0A patent/CN107199334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407610A (en) * | 2008-10-30 | 2009-04-15 | 嘉兴市瑞德材料科技有限公司 | Metallic powder injection molding adhesive |
| CN102115606A (en) * | 2010-12-06 | 2011-07-06 | 常州精研科技有限公司 | Adhesive and method for preparing metal powder injection molding feedstock from same |
| JP2014131054A (en) * | 2011-08-31 | 2014-07-10 | Toshiba Corp | Magnetic material |
| CN105372159A (en) * | 2015-12-10 | 2016-03-02 | 翁廷 | Method for detecting metal powder feedstock fluidity based on Archimedes spiral mold |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097970A (en) * | 2017-12-28 | 2018-06-01 | 东莞华晶粉末冶金有限公司 | Metal powder injection molding feeding and preparation method thereof |
| CN108202139A (en) * | 2017-12-28 | 2018-06-26 | 东莞华晶粉末冶金有限公司 | Metal powder injection molding feeding and preparation method thereof |
| CN109047749A (en) * | 2018-07-18 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | The preparation method of environment-friendly type cemented carbide powder feeding and hard alloy components |
| CN109047750A (en) * | 2018-07-18 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | The preparation method of 310 powder of stainless steel feeding of environment-friendly type and 310 powder of stainless steel components |
| CN109047753A (en) * | 2018-09-04 | 2018-12-21 | 东莞华晶粉末冶金有限公司 | A kind of preparation method suitable for mobile phone center MIM stainless steel feeding and its product |
| CN110052600A (en) * | 2019-06-04 | 2019-07-26 | 苏州卓米智能制造科技有限公司 | A kind of processing method of MIM feeding |
| CN111390185A (en) * | 2020-04-14 | 2020-07-10 | 东莞市金材五金有限公司 | Production method of titanium alloy part |
| CN114737117A (en) * | 2022-03-31 | 2022-07-12 | 广东潮艺金属实业有限公司 | High-hardness and high-rust-resistance stainless steel 316L and sintering process thereof |
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Address after: 523843 Dongguan City, Guangdong Province, Dongcheng Street Niu Shan outside the Industrial Park Wei Feng Road No. 2 Applicant after: Dongguan Hua Jing powder metallurgy company limited Applicant after: Guangdong wins smart group Limited by Share Ltd Address before: 523843 Dongguan City, Guangdong Province, Dongcheng Street Niu Shan outside the Industrial Park Wei Feng Road No. 2 Applicant before: Dongguan Hua Jing powder metallurgy company limited Applicant before: Dongguan Janus Precision Components Co., Ltd. |
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Application publication date: 20170926 |