CN1106324A - injection moulding method for metal chamber type products - Google Patents
injection moulding method for metal chamber type products Download PDFInfo
- Publication number
- CN1106324A CN1106324A CN 94100992 CN94100992A CN1106324A CN 1106324 A CN1106324 A CN 1106324A CN 94100992 CN94100992 CN 94100992 CN 94100992 A CN94100992 A CN 94100992A CN 1106324 A CN1106324 A CN 1106324A
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- CN
- China
- Prior art keywords
- core
- solvent
- injection moulding
- chamber type
- type products
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- 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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- 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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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The injection shaping method for cavity-type metallic products features use of soluble macromolecular material to make moulding core and corresponding solvent to remove the moulding core, so the metallic (or alloy) product with any cavity shape may be made up with low cost.
Description
The present invention relates to the injection molding process of wire chamber shape part and goods.
Make whole chamber type product with metal (containing alloy), adopt casting technique usually.Closely during the last ten years, the powder metallurgy manufacturing has developed the injection molding process of metallic article, provides more simple and easy to do approach for making chamber type goods.But owing to make chamber shape metallic article special requirement has been proposed core: should take out (removal) with this technology more conveniently, guarantee the quality of product again, and chamber shape is complicated more, and requirement is also just high more, thereby applying of this technology is restricted.As seen, the manufacturing of core is the major technique key that wire chamber shape product adopts Shooting Technique to make with removing.Japan Patent " manufacturing process of hollw article " (the flat 1-285579 of the patent No.) adopts low-melting alloy to make core, removes core with fusion method.Low-melting alloy is than great, and rigidity is poor, thereby this patented technology adopted complicated supporting construction, and can not make the product of thin-walled and complicated chamber shape.RUSSP " band chamber ferrous based powder metallurgical manufacture method " (patent publication No. SU1502191) is used acid amides coremaking and burning coring.Obviously, the air pollution of this method existence burning and temperature influence the problem of parts quality when too high, particularly be unsuitable for making big cavity thin-wall goods.
The objective of the invention is to find suitable coremaking material and coring way, satisfy wire chamber shape manufacturing process the parts quality that should guarantee of core is easy to the requirement of removing again, thereby promote Shooting Technique applying in the shape metallic article production of chamber.
Chamber of the present invention type metallic article injection molding method is that the homogeneous mixture with metal dust raw material and thermoplastic adhesive is injected in the mold cavity that is embedded with the macromolecular material core, with solvent the core dissolving is removed then, thereby obtains chamber shape product.
The soluble high-molecular material that is adopted can be one of following material: polyvinyl alcohol; Polymethyl methacrylate; Nylon; The ABS engineering plastics; Polystyrene; Polyformaldehyde; Merlon.The solvent that is adopted can be water or organic solvent, as: benzene; Acetone; Ethylene glycol; Ethyl acetate; Trichloroethanes; Acetate; Gasoline; Chloroform etc.Make core and can use conventional injection moulding, compression molding, machining etc.; Removing core adopts immersion to add stirring method.
Illustrate below in conjunction with accompanying drawing:
Fig. 1: be the homogeneous mixture of metal dust (raw material) and thermoplastic adhesive (a), it has flowability under certain temperature and pressure, and available injection machine is injected in the mold cavity of being made up of molding box and core; (b) be core; (c) be the chamber shape goods of injection moulding after the mould assembling; (d) for using the removal of solvents core; (e) be the chamber shape goods＜C～e is for analysing and observe〉after making.Core material that is adopted and coordinative solvent practical combinations are: (1) ABS plastic and acetone or ethyl acetate; (2) polyvinyl alcohol and water or ethylene glycol; (3) nylon and acetate; (4) polymethyl methacrylate and acetone or trichloroethanes.Coremaking is with injecting or machining process; Remove core coordinative solvent immersion process.Soak time is exceeded so that core is removed, and is generally 12～48 hours; Temperature is a room temperature.
Fig. 2: with the vital part-nozzle on the air-jet loom of this method manufacturing.
Solution behind the molten core passes through distillating recovering solvent, remaining macromolecular material reproducible utilization, and whole technical process can not produce liquid and waste slag produced pollution basically; If, also can avoid contacting noxious material as far as possible without benzene, chloroform etc.
This method is used on the duct type air-jet loom, also can make goods such as carbide alloy, pottery with this method.
Compare with existing chamber shape product manufacturing process, the inventive method has obvious advantage: (1) can make the arbitrarily chamber shape goods of complexity of chamber shape easily; (2) efficient height is suitable for the production of various batches; (3) cost is low; (4) pollution-free.
Claims (3)
1, the injection molding method of a kind of chamber shape metallic article is injected into the mixture of metal dust raw material and thermoplastic adhesive in the mold cavity that is embedded with core, and it is characterized in that: a. core is made by the soluble high-molecular material; B. with solvent the dissolving of the core in the product blank is removed.
2, the method for claim 1 is characterized in that: used macromolecular material is one of following material: polyvinyl alcohol, polymethyl methacrylate, nylon, ABS engineering plastics, polystyrene, polyformaldehyde, Merlon.
3, as claim 1,2 described methods, it is characterized in that: used solvent is water or organic solvent, as: benzene, acetone, ethylene glycol, ethyl acetate, trichloroethanes, acetate, gasoline, chloroform etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100992 CN1106324A (en) | 1994-02-07 | 1994-02-07 | injection moulding method for metal chamber type products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100992 CN1106324A (en) | 1994-02-07 | 1994-02-07 | injection moulding method for metal chamber type products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1106324A true CN1106324A (en) | 1995-08-09 |
Family
ID=5029984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94100992 Pending CN1106324A (en) | 1994-02-07 | 1994-02-07 | injection moulding method for metal chamber type products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1106324A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106898C (en) * | 1997-01-13 | 2003-04-30 | Avx有限公司 | Binder removal method |
| CN102159343A (en) * | 2008-07-17 | 2011-08-17 | 埃米尔·米勒有限责任公司 | Device for carrying mold cores |
| CN103608314A (en) * | 2011-05-18 | 2014-02-26 | 巴斯夫欧洲公司 | Process for producing components by powder injection molding |
| CN109227886A (en) * | 2018-08-29 | 2019-01-18 | 广东金刚新材料有限公司 | A kind of ceramic component and preparation method thereof with inner-cavity structure |
| CN109702209A (en) * | 2019-01-18 | 2019-05-03 | 佛山隆易科技有限公司 | A kind of manufacture contains the manufacturing method of profile-followed water route part |
-
1994
- 1994-02-07 CN CN 94100992 patent/CN1106324A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106898C (en) * | 1997-01-13 | 2003-04-30 | Avx有限公司 | Binder removal method |
| CN102159343A (en) * | 2008-07-17 | 2011-08-17 | 埃米尔·米勒有限责任公司 | Device for carrying mold cores |
| CN102159343B (en) * | 2008-07-17 | 2015-03-25 | 埃米尔·米勒有限责任公司 | Device for carrying mold cores |
| CN103608314A (en) * | 2011-05-18 | 2014-02-26 | 巴斯夫欧洲公司 | Process for producing components by powder injection molding |
| CN103608314B (en) * | 2011-05-18 | 2015-11-25 | 巴斯夫欧洲公司 | The method of assembly is produced by powder injection molding |
| CN109227886A (en) * | 2018-08-29 | 2019-01-18 | 广东金刚新材料有限公司 | A kind of ceramic component and preparation method thereof with inner-cavity structure |
| CN109702209A (en) * | 2019-01-18 | 2019-05-03 | 佛山隆易科技有限公司 | A kind of manufacture contains the manufacturing method of profile-followed water route part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CI01 | Correction of invention patent gazette |
Correction item: Applicant Correct: Beijing Powder Metallurgy Inst. False: Beijing Powder Metallurgy Inst. Number: 32 Page: 43 Volume: 11 |
|
| ERR | Gazette correction |
Free format text: CORRECT: APPLICANT; FROM: BEIJING INST., OF POWDER METALLURGY TO: BEIJING CITY INSTITUTE OF POWDER METALLUREGY |
|
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |