CN108161012A - The technique that line improves MIM products and injects black line is locally shone using mold - Google Patents
The technique that line improves MIM products and injects black line is locally shone using mold Download PDFInfo
- Publication number
- CN108161012A CN108161012A CN201810052226.4A CN201810052226A CN108161012A CN 108161012 A CN108161012 A CN 108161012A CN 201810052226 A CN201810052226 A CN 201810052226A CN 108161012 A CN108161012 A CN 108161012A
- Authority
- CN
- China
- Prior art keywords
- line
- mold
- shine
- locally
- technique
- 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.)
- Pending
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The technique that line improves MIM products and injects black line is locally shone the present invention relates to mold is used；Belong to mold MIM injection molding technologies field；At least three layers of surface for not needing to shine line is pasted onto using dedicated adhesive plaster, is sealed after stickup with wax and shines line zone boundary, then clean mold again；It can be in furvous that the mold pasted, which is immersed in 10 30min in chemical agent to shine line region,；Wax is then uniformly coated with, then line is transferred on dedicated film with roller and makes paraffin paper with the card of film etching standard, then paraffin paper is attached to the region for needing to shine line on mold again；Mold is uniformly sprayed on spray gun again need to shine the surface of line；Corrosion：The good mold of spray pattern is immersed in the chemical medicinal liquid Rio mixed up 20 minutes, the formula of chemical medicinal liquid：Ferric trichloride, hydrochloric acid, kerosene；Mold, which locally shines line and do not change mould structure, will not cause to inject that discontented other variations etc. are bad, and the present invention has many advantages, such as that technique setting is reasonable caused by mould structure changes, and operating cost is low, convenient for popularization.
Description
Technical field
The present invention relates to mold is used locally to shine the technique that line improves MIM products and injects black line, belong to mold MIM and be injected into
Type technical field.
Background technology
MIM is the abbreviation of metal injection moulding.MIM is a kind of by the injection of the plasticising mixture of metal powder and its binding agent
Manufacturing process in model.Metal injection moulding (Metal injection Molding, MIM) be first by selected powder with
Binding agent is mixed, and then mixture is pelletized the required shape of injection moulding again.Polymer is by its VISCOUS FLOW
Feature assign mixture, and contribute to forming, mould filling and powder packing uniformity.Binding agent is excluded after forming,
Degreasing base is sintered again.Some sintered products are also possible to carry out further densification, heat treatment or machining.It burns
Product is tied not only with the complicated shape and high-precision as injection molding of plastics method resulting product, but also is had and connect with forging
Near physics, chemistry and mechanical performance.The technology is suitble to produce in enormous quantities that small-sized, accurate, 3D shape is complicated and tool
Have specific characteristics the manufacture of metal parts that can be required.
Black line is a big appearance difficult point of MIM injection molding technique sections product (abbreviation raw embryo), and black line primarily forms original
Flowing velocity because being melt leads to two-phase laminated flow, and black line is the binding agent of disengaging.The black line of raw embryo, which does not solve, can cause to be sintered
Product has the bad orders such as recess bulge afterwards.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of reasonable designs, easy to operate
The technique that line improves MIM products and injects black line is locally shone using mold.
To achieve the above object, the technical solution adopted by the present invention is：It is comprised the steps of：
1st, mold prepares:The cleaning of die surface greasy dirt and impurity, die surface are carried out using dedicated die cleaning agent
Should not there are scuffing and husky hole；
2nd, mold is protected：At least three layers of surface for not needing to shine line is pasted onto using dedicated adhesive plaster, is used after stickup
Line zone boundary is shone in wax sealing, then cleans mold again；
3rd, mold is examined：It can be in furvous that the mold pasted, which is immersed in 10-30min in chemical agent to shine line region,；
4th, the film is shone --- the patch film：Wax is then uniformly coated with the card of film etching standard, then with roller by line
It is transferred on dedicated film and makes paraffin paper, then paraffin paper is attached to the region for needing to shine line on mold again；
5th, spray pattern：Ink is allocated by lines requirement, then be uniformly sprayed on mold with spray gun to shine the surface of line；
6th, corrode：The good mold of spray pattern is immersed in the chemical medicinal liquid Rio mixed up 20 minutes, the formula of chemical medicinal liquid：
Nitric acid, copper sulphate, three gasification iron, chlorination acid.
7th, it post-processes：It is uniformly sprayed on mold with spray gun to shine on the surface of line, removes removing oxide layer, should be in silver after sand washing mold
White；
Preferably, chemical agent is ferric trichloride, hydrochloric acid, kerosene in the step 3.
Next step operation is carried out again preferably, must be air-dried after step 5 spray pattern.
Preferably, in the step 6 chemical medicinal liquid formula for 550~650g/L of nitric acid, 5~10ml/L of copper sulphate,
Three 3~10ml/L of gasification iron, 5~15 drops of chlorination acid/slot.
The technical principle of the present invention：Die surface, which locally shines line, can make surface become coarse so as to slow down the stream on solution surface
Speed, flow velocity reduce the separation that can reduce solution binding agent.
The present invention shines the flow velocity that line slows down solution surface in mold part, and whole flow velocity is constant, is not easy to produce in product surface
Raw black line；It is discontented other injection caused by mould structure will not cause to change because of mould structure is not changed in mold part solarization line
Variation etc. is bad.
With the above structure, the present invention has the beneficial effect that：It is of the present invention that line improvement MIM productions are locally shone using mold
Product inject the technique of black line, it improves MIM products and injects black line, improve the appearance of product；Improve the injection of MIM products
The black normal technique of line is to change mold cavity structure adjustment injector mould temperature material temperature etc. to have reached the flowing for changing solution entirety
Speed, the present invention shine the flow velocity that line slows down solution surface in mold part, and whole flow velocity is constant, are not easy to generate in product surface black
Line, and the present invention does not change mould structure in mold part solarization line and the injection caused by mould structure change will not be caused discontented
Other variations etc. are bad, and the present invention has many advantages, such as that technique setting is reasonable, and operating cost is low, convenient for popularization.
Specific embodiment
The line that locally shone using mold described in present embodiment improves the technique of the black line of MIM products injection comprising following
Step：
1st, mold prepares:The cleaning of die surface greasy dirt and impurity, die surface are carried out using dedicated die cleaning agent
Should not there are scuffing and husky hole；
2nd, mold is protected：At least three layers of surface for not needing to shine line is pasted onto using dedicated adhesive plaster, is used after stickup
Line zone boundary is shone in wax sealing, then cleans mold again；
3rd, mold is examined：It can be in furvous that the mold pasted, which is immersed in 10-30min in chemical agent to shine line region,；
4th, the film is shone --- the patch film：Wax is then uniformly coated with the card of film etching standard, then with roller by line
It is transferred on dedicated film and makes paraffin paper, then paraffin paper is attached to the region for needing to shine line on mold again；
5th, spray pattern：Ink is allocated by lines requirement, then be uniformly sprayed on mold with spray gun to shine the surface of line；
6th, corrode：The good mold of spray pattern is immersed in the chemical medicinal liquid Rio mixed up 20 minutes, the formula of chemical medicinal liquid：
Nitric acid, copper sulphate, three gasification iron, chlorination acid；
7th, it post-processes：It is uniformly sprayed on mold with spray gun to shine on the surface of line, removes removing oxide layer, should be in silver after sand washing mold
White；
Wherein, it must be air-dried after step 5 spray pattern and carry out next step operation again；Chemical medicinal liquid matches in the step 6
Side is 550~650g/L of nitric acid, 5~10ml/L of copper sulphate, three 3~10ml/L of gasification iron, 5~15 drops of chlorination acid/slot.
The technical principle of present embodiment：Die surface, which locally shines line, can make surface become coarse so as to slow down solution
The flow velocity on surface, flow velocity reduce the separation that can reduce solution binding agent.
Present embodiment shines the flow velocity that line slows down solution surface in mold part, and whole flow velocity is constant, is not easy producing
Product surface generates black line；Do not change to inject caused by mould structure will not cause to change because of mould structure in mold part solarization line and be discontented with
Other variations etc. are bad.
The technique that line improves MIM products and injects black line is locally shone using mold described in present embodiment, it improves
MIM products inject black line, improve the appearance of product；It is modification mould to improve MIM products to inject the black normal technique of line
Tool cavity structure adjustment injector mould temperature material temperature etc. has reached the flowing velocity for changing solution entirety, and the present invention locally shines in mold
Line slows down the flow velocity on solution surface, and whole flow velocity is constant, is not easy to generate black line in product surface, and the present invention locally shines in mold
Line, which does not change mould structure, will not cause to inject bad, the present invention tools such as discontented other variations caused by mould structure changes
There is the advantages that technique setting is reasonable, and operating cost is low, convenient for promoting,
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, without departing from the spirit and scope of technical solution of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. the technique that line improves MIM products and injects black line is locally shone using mold, it is characterised in that：It is comprised the steps of：
(1), mold prepares:The cleaning of die surface greasy dirt and impurity is carried out using dedicated die cleaning agent, die surface is not
Should there are scuffing and husky hole；
(2), mold is protected：At least three layers of surface for not needing to shine line is pasted onto using dedicated adhesive plaster, wax is used after stickup
Line zone boundary is shone in sealing, then cleans mold again；
(3), mold is examined：It can be in furvous that the mold pasted, which is immersed in 10-30min in chemical agent to shine line region,；
(4), the film is shone --- the patch film：Wax is then uniformly coated with, then turned line with roller with the card of film etching standard
It prints on dedicated film and makes paraffin paper, then paraffin paper is attached to the region for needing to shine line on mold again；
(5), spray pattern：Ink is allocated by lines requirement, then be uniformly sprayed on mold with spray gun to shine the surface of line；
(6), corrode：The good mold of spray pattern is immersed in the chemical medicinal liquid Rio mixed up 20 minutes, the formula of chemical medicinal liquid：Nitre
Acid, copper sulphate, three gasification iron, chlorination acid；
(7), it post-processes：It is uniformly sprayed on mold with spray gun to shine on the surface of line, removes removing oxide layer, should be in silvery white after sand washing mold
Color.
2. according to claim 1 locally shine the technique that line improves MIM products and injects black line using mold, feature exists
In：Chemical agent is ferric trichloride, hydrochloric acid, kerosene in the step (3).
3. according to claim 1 locally shine the technique that line improves MIM products and injects black line using mold, feature exists
In：It must be air-dried after step (5) spray pattern and carry out next step operation again.
4. according to claim 1 locally shine the technique that line improves MIM products and injects black line using mold, feature exists
In：In the step (6) formula of chemical medicinal liquid for 550~650g/L of nitric acid, 5~10ml/L of copper sulphate, three gasification iron 3~
10ml/L, 5~15 drops of chlorination acid/slot.
5. according to claim 1 locally shine the technique that line improves MIM products and injects black line using mold, feature exists
In：Its technical principle：Die surface, which locally shines line, can make surface become coarse so as to slow down the flow velocity on solution surface, flow velocity drop
The low separation that can reduce solution binding agent.
6. according to claim 1 locally shine the technique that line improves MIM products and injects black line using mold, feature exists
In：It shines the flow velocity that line slows down solution surface in mold part, and whole flow velocity is constant, is not easy to generate black line in product surface；
Mold, which locally shines line and do not change mould structure, will not cause to inject discontented other variations etc. caused by mould structure changes no
It is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052226.4A CN108161012A (en) | 2018-01-19 | 2018-01-19 | The technique that line improves MIM products and injects black line is locally shone using mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052226.4A CN108161012A (en) | 2018-01-19 | 2018-01-19 | The technique that line improves MIM products and injects black line is locally shone using mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108161012A true CN108161012A (en) | 2018-06-15 |
Family
ID=62515282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810052226.4A Pending CN108161012A (en) | 2018-01-19 | 2018-01-19 | The technique that line improves MIM products and injects black line is locally shone using mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108161012A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973491A (en) * | 2018-08-16 | 2018-12-11 | 模德模具(东莞)有限公司 | Die surface can anti-sandblasting laser engraving technique |
| CN113146939A (en) * | 2021-03-22 | 2021-07-23 | 深圳铭锋达精密技术有限公司 | Surface treatment method for mold cavity and injection molding method |
| CN115097557A (en) * | 2022-06-21 | 2022-09-23 | 深圳市日探科技有限公司 | Diffusion plate manufacturing method and diffusion plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345125A (en) * | 2010-07-28 | 2012-02-08 | 比亚迪股份有限公司 | Method for forming multilayer patterns on surface of metal base material |
| CN102398437A (en) * | 2010-09-17 | 2012-04-04 | 比亚迪股份有限公司 | Pattern transferring method and preparation method of surface-patterned mould |
| CN102729717A (en) * | 2011-04-06 | 2012-10-17 | 珠海格力电器股份有限公司 | Panel and manufacturing method thereof |
| CN205588565U (en) * | 2016-05-11 | 2016-09-21 | 惠州市璇瑰精密技术工业有限公司 | Mobile phone shell injection mold |
| US20160296672A1 (en) * | 2013-01-08 | 2016-10-13 | Praxis Powder Technology, Inc. | High Strength Injection Molded Orthopedic Devices |
-
2018
- 2018-01-19 CN CN201810052226.4A patent/CN108161012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345125A (en) * | 2010-07-28 | 2012-02-08 | 比亚迪股份有限公司 | Method for forming multilayer patterns on surface of metal base material |
| CN102398437A (en) * | 2010-09-17 | 2012-04-04 | 比亚迪股份有限公司 | Pattern transferring method and preparation method of surface-patterned mould |
| CN102729717A (en) * | 2011-04-06 | 2012-10-17 | 珠海格力电器股份有限公司 | Panel and manufacturing method thereof |
| US20160296672A1 (en) * | 2013-01-08 | 2016-10-13 | Praxis Powder Technology, Inc. | High Strength Injection Molded Orthopedic Devices |
| CN205588565U (en) * | 2016-05-11 | 2016-09-21 | 惠州市璇瑰精密技术工业有限公司 | Mobile phone shell injection mold |
Non-Patent Citations (3)
| Title |
|---|
| JJGL023: "模具腐蚀皮纹工艺原理及其流程", 《豆丁》 * |
| 张京珍: "《塑料成型工艺》", 31 January 2010 * |
| 模具云工厂公众号: "模具晒纹那么美，究竟啥工艺做出了的呢", 《模具云工厂公众号》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973491A (en) * | 2018-08-16 | 2018-12-11 | 模德模具(东莞)有限公司 | Die surface can anti-sandblasting laser engraving technique |
| CN113146939A (en) * | 2021-03-22 | 2021-07-23 | 深圳铭锋达精密技术有限公司 | Surface treatment method for mold cavity and injection molding method |
| CN115097557A (en) * | 2022-06-21 | 2022-09-23 | 深圳市日探科技有限公司 | Diffusion plate manufacturing method and diffusion plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108161012A (en) | The technique that line improves MIM products and injects black line is locally shone using mold | |
| CN104759587B (en) | A kind of hot investment casting wax-pattern material and preparation method thereof | |
| CN103817767A (en) | Method for manufacturing ceramic products with 3D printing technology | |
| CN103691890B (en) | The core-making method of cylinder cap rising head oil passage sand core processed and cylinder cap casting method | |
| CN105195667A (en) | Preparation method of 3D printing rapid-prototyping precoated sand | |
| CN107790624A (en) | A kind of method that evaporative pattern is prepared using 3DP printing techniques | |
| CN105945226B (en) | A kind of method for making metal filigree | |
| CN101992265B (en) | Method for manufacturing resin casting die used for modeling sodium silicate self-hardening sand | |
| CN108339942A (en) | A kind of microwave curing formation system of water-soluble core | |
| CN105835300A (en) | High fineness and no-weldlines injection moulding process | |
| CN101700560B (en) | Plaster mold investment casting method | |
| CN110102711A (en) | The manufacturing method of steel-casting moulding process casting mold | |
| CN106380206B (en) | A kind of preparation for 3DP molding zirconium nitride powder body material | |
| CN106914588A (en) | A kind of straight-sided flank gear Rapid Precision Casting technique based on increases material manufacturing technology | |
| CN200967237Y (en) | Automatic fueling injection equipment for rotary disc type brick making machine | |
| CN106424743A (en) | Production method for high-strength and high-modulus additive manufacturing materials | |
| CN105313250A (en) | Gypsum plastic suction mold | |
| CN107097378A (en) | The processing method that automobile decoration piece surface embeds texture | |
| CN108500215A (en) | A kind of quick forming method of the water-soluble core of microwave curing | |
| CN108481652A (en) | A kind of production method and cell phone rear cover of cell phone rear cover | |
| CN108437342A (en) | A kind of production method and cell phone rear cover of cell phone rear cover | |
| CN103381482A (en) | Injection forming method for preparing helical gear | |
| CN108372700A (en) | A kind of production method and cell phone rear cover of cell phone rear cover | |
| CN108247287A (en) | USB joint shell processing method | |
| CN114042862A (en) | Novel method for manufacturing medium-wax pattern in lost wax casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |
|
| RJ01 | Rejection of invention patent application after publication |