CN108655405A - A kind of injection moulding technological process of production - Google Patents
A kind of injection moulding technological process of production Download PDFInfo
- Publication number
- CN108655405A CN108655405A CN201810512484.6A CN201810512484A CN108655405A CN 108655405 A CN108655405 A CN 108655405A CN 201810512484 A CN201810512484 A CN 201810512484A CN 108655405 A CN108655405 A CN 108655405A
- Authority
- CN
- China
- Prior art keywords
- feeding bin
- parts
- technological process
- injection moulding
- bonding agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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
-
- 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
Abstract
The invention discloses a kind of injection moulding technological process of productions, are related to powder injection molding technology field.The present invention includes the following steps：SS01 stocks up；SS02 feedings；SS03 is injected；SS04 unstickings；SS05 is sintered.The present invention in the feed inlet of injector by being arranged the feeding bin used in SS02, ensure the range of 325~350 DEG C of the temperature of feeding bin, metal powder and bonding agent are mixed 40 60 minutes using blender and are uniformly mixed, mixture is discharged into injector by the valve for directly opening feeding bin bottom, solving the problems, such as that the existing injection moulding technological process of production need to melt raw material leads to low production efficiency and big energy-consuming, by the metal powder for selecting 0.5 20 μm before processing, improve formed precision, significantly better than precision casting process, it is close with mechanical processing, it disclosure satisfy that existing technology requirement, without supplementary processing.
Description
Technical field
The invention belongs to powder injection molding technology fields, more particularly to a kind of injection moulding technological process of production.
Background technology
The production of traditional precision parts is substantially dependent on machining, and equipment investment is big and efficiency is low, and powder
Last injection molding technology is a kind of quick and mass production complex precise product as a kind of novel increasing material processing technology
Advanced manufacturing technology has the outstanding advantages such as at low cost, efficient, environmental-friendly, it is considered to be complex precise parts manufacture
One revolution of technology is contemporary most popular increasing material processing technology.
For powder injection-molded energy as production plastic products, one-pass molding produces complex-shaped metal and zero, ceramics
Part, the technology utilize injecting method, ensure that material is full of mold cavity, also ensure that the reality of the high labyrinth of part
It is existing, in the past in conventional machining techniques, for complicated part, single part is typically first produced respectively, is then assembled again,
And when using powder injection molding technology, it may be considered that be integrated into complete single component, greatly reduce production step in this way
Suddenly, processing program is simplified.
It needs first to melt the metal powder got ready and bonding agent in the existing powder injection-molded technological process of production mixed
Metallic particles is made using granule after conjunction, then puts into injector and injects, causes the production time longer, to reduce production
Efficiency, and it is serious to consume energy.
Invention content
The purpose of the present invention is to provide a kind of injection moulding technological process of productions, pass through the feed inlet setting in injector
The feeding bin used in SS02 ensures the range of 325~350 DEG C of the temperature of feeding bin, by metal powder and is glued using blender
It connects agent mixing to be uniformly mixed for 40-60 minutes, mixture is discharged into injector by the valve for directly opening feeding bin bottom, is solved
Raw material need to be melted the problem of leading to low production efficiency and big energy-consuming by the existing injection moulding technological process of production.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is a kind of injection moulding technological process of production, is included the following steps：
SS01 stocks up：The metal powder for filtering out certain sieve mesh is made bonding agent by formula, chooses the gold of certain proportion powder
Belong to powder and bonding agent；
SS02 feedings：The temperature in feeding bin in injector is adjusted, the metal powder prepared in SS01 and bonding agent are thrown
Enter feeding bin, keep constant temperature and be uniformly mixed feeding bin using blender, the valve for directly opening feeding bin bottom will
Mixture is discharged into injector；
SS03 is injected：The injection port of injector is aligned to the feed inlet of mold, forms blank；
SS04 unstickings：Blank is put into sintering furnace and is heated, bonding agent is sloughed with the heating of sintering furnace；
SS05 is sintered：The temperature for continuing sintering furnace in raising SS04 is warming up to material sintering temperature and realizes blank Densification,
Obtain finished product.
Further, the weight accounting of metal powder is 90%~93% in the SS01, and the weight accounting of bonding agent is
7%~10%.
Further, blender and heater are equipped in the feeding bin used in the SS02, when being mixed in feeding bin
Heater ensures that the temperature inside feeding bin is 325~350 DEG C, and incorporation time was in 40-60 minutes ranges.
Further, bonding agent is made of following parts by weight component in the SS01：5-10 parts of atoleine, naphthalene 5-15
Part, 10-20 parts of solid paraffin, 10-20 parts of microwax, 8-10 parts of electronic wax, 15-30 parts of high molecular polymer and surfactant
1-5 parts.
Further, the high molecular polymer is two in polyethylene, polypropylene, polyacrylate, polyformaldehyde and resin
Kind and two or more mixtures, the surfactant include stearic acid or oleic acid or calcium stearate or magnesium stearate.
Further, in the SS01 metal powder particle size used in 0.5-20 μm of range, metal powder granulates
Smaller, then specific surface area is bigger, is easy to be molded and be sintered.
The invention has the advantages that：
1, the present invention ensures the temperature of feeding bin by the way that the feeding bin used in SS02 is arranged in the feed inlet of injector
Metal powder and bonding agent mixing are uniformly mixed using blender, directly open and feed by 325~350 DEG C of range for 40-60 minutes
Mixture is discharged into injector by the valve of bin bottom, is not necessarily to melt raw material in process of production, improves production effect
Rate, and power savings advantages are apparent.
2, the metal powder of the invention by selecting 0.5-20 μm before processing, improves formed precision, hence it is evident that be better than essence
Close casting technique, existing technology requirement, without supplementary processing close with mechanical processing.
3, bonding agent is made according to certain formula in the present invention, and is mixed with bonding agent using the small powder of sieve mesh, produces
The interior tissue for going out product is uniform, and defect is few, the intensity of product and haveing excellent performance for toughness etc..
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
The present invention is a kind of injection moulding technological process of production, is included the following steps：
SS01 stocks up：The metal powder for filtering out certain sieve mesh is made bonding agent by formula, chooses the gold of certain proportion powder
Belong to powder and bonding agent；
SS02 feedings：The temperature in feeding bin in injector is adjusted, the metal powder prepared in SS01 and bonding agent are thrown
Enter feeding bin, keep constant temperature and be uniformly mixed feeding bin using blender, the valve for directly opening feeding bin bottom will
Mixture is discharged into injector；
SS03 is injected：The injection port of injector is aligned to the feed inlet of mold, forms blank；
SS04 unstickings：Blank is put into sintering furnace and is heated, bonding agent is sloughed with the heating of sintering furnace；
SS05 is sintered：The temperature for continuing sintering furnace in raising SS04 is warming up to material sintering temperature and realizes blank Densification,
Obtain finished product.
Wherein, the weight accounting of metal powder is 90%~93% in SS01, the weight accounting of bonding agent is 7%~
10%.
Wherein, blender and heater are equipped in the feeding bin used in SS02, heater is protected when being mixed in feeding bin
It is 325~350 DEG C to demonstrate,prove the temperature inside feeding bin, and incorporation time was in 40-60 minutes ranges.
Wherein, bonding agent is made of following parts by weight component in SS01：5-10 parts of atoleine, 5-15 parts of naphthalene, solid stone
1-5 parts of 10-20 parts of wax, 10-20 parts of microwax, 8-10 parts of electronic wax, 15-30 parts of high molecular polymer and surfactant.
Wherein, high molecular polymer is two kinds and two kinds in polyethylene, polypropylene, polyacrylate, polyformaldehyde and resin
Above mixture, surfactant include stearic acid or oleic acid or calcium stearate or magnesium stearate.
Wherein, in 0.5-20 μm of range, metal powder granulates are smaller, then compare for metal powder particle size used in SS01
Surface area is bigger, is easy to be molded and be sintered.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the present invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the present invention
Principle and practical application, to enable skilled artisan to be best understood by and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of injection moulding technological process of production, it is characterised in that：Include the following steps：
SS01 stocks up：The metal powder for filtering out certain sieve mesh is made bonding agent by formula, chooses the metal powder of certain proportion powder
End and bonding agent；
SS02 feedings：The temperature in feeding bin in injector is adjusted, the metal powder prepared in SS01 and bonding agent input are fed
Feed bin is kept constant temperature and is uniformly mixed feeding bin using blender, is directly opened the valve of feeding bin bottom and will be mixed
Object is discharged into injector；
SS03 is injected：The injection port of injector is aligned to the feed inlet of mold, forms blank；
SS04 unstickings：Blank is put into sintering furnace and is heated, bonding agent is sloughed with the heating of sintering furnace；
SS05 is sintered：The temperature for continuing sintering furnace in raising SS04 is warming up to material sintering temperature and realizes blank Densification, obtains
Finished product.
2. a kind of injection moulding technological process of production according to claim 1, which is characterized in that metal powder in the SS01
The weight accounting at end is 90%~93%, and the weight accounting of bonding agent is 7%~10%.
3. a kind of injection moulding technological process of production according to claim 1, which is characterized in that used in the SS02
Blender and heater are equipped in feeding bin, when being mixed in feeding bin heater ensure the temperature inside feeding bin be 325~
350 DEG C, and incorporation time was in 40-60 minutes ranges.
4. a kind of injection moulding technological process of production according to claim 1, which is characterized in that bonding agent in the SS01
It is made of following parts by weight component：5-10 parts of atoleine, 5-15 parts of naphthalene, 10-20 parts of solid paraffin, 10-20 parts of microwax, electricity
1-5 parts of sub- wax 8-10 parts, 15-30 parts of high molecular polymer and surfactant.
5. a kind of injection moulding technological process of production according to claim 4, which is characterized in that the high molecular polymer
For two kinds in polyethylene, polypropylene, polyacrylate, polyformaldehyde and resin and two or more mixtures, the surface-active
Agent includes stearic acid or oleic acid or calcium stearate or magnesium stearate.
6. a kind of injection moulding technological process of production according to claim 1, which is characterized in that gold used in the SS01
Belong to range of the powder particle size at 0.5-20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810512484.6A CN108655405A (en) | 2018-05-25 | 2018-05-25 | A kind of injection moulding technological process of production |
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| CN201810512484.6A CN108655405A (en) | 2018-05-25 | 2018-05-25 | A kind of injection moulding technological process of production |
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| CN108655405A true CN108655405A (en) | 2018-10-16 |
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| CN201810512484.6A Pending CN108655405A (en) | 2018-05-25 | 2018-05-25 | A kind of injection moulding technological process of production |
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Cited By (3)
| 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 |
| CN112276094A (en) * | 2020-10-16 | 2021-01-29 | 苏州敏发科精密电子科技有限公司 | Precise metal powder injection molding processing technology |
| CN115056155A (en) * | 2022-07-11 | 2022-09-16 | 河北锟洲科技有限公司 | Method for manufacturing porous metal bond grinding wheel |
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| CN101417337A (en) * | 2007-10-23 | 2009-04-29 | 比亚迪股份有限公司 | Method for manufacturing bevel gear |
| CN103317139A (en) * | 2013-05-24 | 2013-09-25 | 常州精研科技有限公司 | Metal powder one-time injection moulding fan and manufacture method thereof |
| CN203495227U (en) * | 2013-08-26 | 2014-03-26 | 苏州米莫金属科技有限公司 | Powder injection molding device |
| JP2014129573A (en) * | 2012-12-28 | 2014-07-10 | Taisei Kogyo Kk | Injection-molding composition |
| CN104668565A (en) * | 2015-01-04 | 2015-06-03 | 东莞劲胜精密组件股份有限公司 | Powder injection molding feedstock preparing method and powder injection molding method |
| CN205057065U (en) * | 2015-10-15 | 2016-03-02 | 湖南省民鑫新材料有限公司 | Powder injection molding is with preventing gas -tight bubble injection device that condenses |
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2018
- 2018-05-25 CN CN201810512484.6A patent/CN108655405A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417337A (en) * | 2007-10-23 | 2009-04-29 | 比亚迪股份有限公司 | Method for manufacturing bevel gear |
| JP2014129573A (en) * | 2012-12-28 | 2014-07-10 | Taisei Kogyo Kk | Injection-molding composition |
| CN103317139A (en) * | 2013-05-24 | 2013-09-25 | 常州精研科技有限公司 | Metal powder one-time injection moulding fan and manufacture method thereof |
| CN203495227U (en) * | 2013-08-26 | 2014-03-26 | 苏州米莫金属科技有限公司 | Powder injection molding device |
| CN104668565A (en) * | 2015-01-04 | 2015-06-03 | 东莞劲胜精密组件股份有限公司 | Powder injection molding feedstock preparing method and powder injection molding method |
| CN205057065U (en) * | 2015-10-15 | 2016-03-02 | 湖南省民鑫新材料有限公司 | Powder injection molding is with preventing gas -tight bubble injection device that condenses |
Cited By (3)
| 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 |
| CN112276094A (en) * | 2020-10-16 | 2021-01-29 | 苏州敏发科精密电子科技有限公司 | Precise metal powder injection molding processing technology |
| CN115056155A (en) * | 2022-07-11 | 2022-09-16 | 河北锟洲科技有限公司 | Method for manufacturing porous metal bond grinding wheel |
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