CN110965100A - Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder - Google Patents
Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder Download PDFInfo
- Publication number
- CN110965100A CN110965100A CN201911200212.3A CN201911200212A CN110965100A CN 110965100 A CN110965100 A CN 110965100A CN 201911200212 A CN201911200212 A CN 201911200212A CN 110965100 A CN110965100 A CN 110965100A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- micro
- arc oxidation
- alloy cylinder
- forged aluminum
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/12—Anodising more than once, e.g. in different baths
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/022—Anodisation on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Forging (AREA)
Abstract
In order to solve the oil leakage problem during working and the problem that edges and edges of the outer surface of a cylinder body partially drop due to integral micro-arc oxidation of a forged aluminum alloy cylinder body, the invention provides a process method for micro-arc oxidation and hard anodization of the forged aluminum alloy cylinder body.
Description
Technical Field
The invention belongs to the technical field of surface treatment metal conversion films, and particularly provides a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder.
Background
The original workshop production method adopts the micro-arc oxidation of the whole forged aluminum alloy cylinder body, and the small hole part at the tail end of the individual cylinder body has the oil leakage phenomenon after the trial run. Meanwhile, when the thickness of the inner surface film layer meets the process requirement, the thickness of the outer surface film layer far exceeds the requirement of the process upper limit, and the edge and the corner of the outer surface of the cylinder body generate a local block falling phenomenon in the subsequent processing and assembling processes and after trial run, so that the service performance of the engine is influenced.
Disclosure of Invention
In order to solve the oil leakage problem during working and the problem that edges and edges of the outer surface of a cylinder body partially drop due to integral micro-arc oxidation of a forged aluminum alloy cylinder body, the invention provides a process method for micro-arc oxidation and hard anodization of the forged aluminum alloy cylinder body.
The technical scheme of the invention is as follows:
a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder is characterized by comprising the following steps: the micro-arc oxidation is carried out on the outer surface of the cylinder body, and the hard anodization treatment is carried out on the surface of the inner cavity, and the specific process route is as follows: the whole aluminum alloy cylinder body is forged by micro-arc oxidation → the inner cavity is ground by mechanical processing → the outer surface is protected by insulation → the inner cavity is hard anodized → the inner cavity is ground by mechanical processing.
The invention discloses a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder, which is characterized by comprising the following steps of: the thickness of the micro-arc oxidation film layer is within the range of 0.03-0.08, and the thickness of the hard oxidation film layer is 0.05-0.08.
The invention discloses a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder, which is characterized by comprising the following steps of: before hard anodizing of the inner cavity, the outer surface of the cylinder body is subjected to insulation protection by using AC850 chemical milling protective paint, and the cylinder body is brushed for 4-6 times.
The invention discloses a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder, which is characterized in that the outer surface 3 of the forged aluminum alloy cylinder, the inner cavity 4 of the forged aluminum alloy cylinder, a tail end small hole 2 and a transition zone chamfer 5 are subjected to integral micro-arc oxidation in the following solutions:
the invention discloses a process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder, which is characterized in that the hard anodization of an inner cavity 4 of the forged aluminum alloy cylinder is carried out in the following solutions:
according to the invention, the micro-arc oxidation is carried out on the outer surface of the cylinder, the hard anodization treatment is carried out on the surface of the inner cavity, and the joint of the micro-arc oxidation film layer and the hard anodization film layer at the position of the chamfer transition region is not provided with a naked film layer, so that the connection is complete. The thickness of the micro-arc oxidation layer is 0.03-0.08, the microhardness of the film layer reaches 800Hv, the corrosion resistance and the humidity resistance reach 1000 hours, the mould resistance reaches more than grade 1, and the film layer has good three-proofing performance; the thickness of the hard oxidation layer is 0.05-0.08, the microhardness of the film layer is more than 300Hv, the corrosion resistance reaches 336 hours, and the film layer has good wear resistance and corrosion resistance.
The hard anodized film formed on the surface of the inner hole of the micro-arc oxidation film formed on the outer surface of the forged aluminum alloy cylinder prepared by the scheme of the invention has the qualification rate of up to 100 percent, and provides reference for the design of similar workpieces. In the subsequent processing, assembly and use processes of the forged aluminum alloy cylinder, the edge and the corner of the outer surface of the cylinder do not have the local block falling phenomenon, and the small hole part at the tail end of the cylinder does not have the oil leakage phenomenon, so that the service performance of the engine is improved.
The invention is applied to a certain type of aero-engine at present, the micro-arc oxidation and hardening technology is adopted for forging the aluminum alloy cylinder, the three-proofing performance, the wear resistance and the service performance of the part are improved, the production process of the part is simple and convenient to operate, the quality is stable and reliable, the production preparation time is shortened, the production efficiency is improved, and the method is suitable for batch production. The method can be popularized and applied to the protection of components such as high-thrust-ratio aircraft engines, ship-based gas turbines and the like, and has wide market prospect.
Drawings
FIG. 1 is a schematic structural view of a forged aluminum alloy cylinder.
Reference numerals: 1. the method comprises the following steps of 1, barrel part, 2, tail end small holes, 3, forging the outer surface of an aluminum alloy barrel, 4, forging the inner cavity of the aluminum alloy barrel, 5 and chamfering a transition area.
Detailed Description
A process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder body comprises the following specific process routes: the whole aluminum alloy cylinder body is forged by micro-arc oxidation → the inner cavity is ground by mechanical processing → the outer surface is protected by insulation → the inner cavity is hard anodized → the inner cavity is ground by mechanical processing.
1) And performing micro-arc oxidation on all forged aluminum alloy cylinders: the outer surface 3 of the forged aluminum alloy cylinder body, the inner cavity 4 of the forged aluminum alloy cylinder body, the tail end small hole 2 and the transition zone chamfer 5 are subjected to integral micro-arc oxidation in the following solutions:
the thickness of the film layer prepared by forging the outer surface 3 of the aluminum alloy cylinder body is uniform and is 0.06-0.065. And (3) performance detection results: the corrosion resistance of the film reaches 1000 hours, the moisture-heat property of the film reaches 1000 hours, and the film mould test 28d reaches more than grade 1, which meets the requirements of the drawing.
2) Inner cavity of mechanical processing mill
The machining workshop is used for mechanically grinding the surface allowance of the inner cavity of the cylinder body to meet the requirements of surface roughness and dimensional tolerance of design paper, the transition area is maintained to have an intact oxidation film layer after grinding, the edge of the transition area has no grinding collapse phenomenon, and other outer surfaces have no film layer chipping phenomenon.
3) Outer surface insulation protection
And performing insulation protection on the outer surface of the cylinder by using AC850 chemical milling protective paint, and brushing for 4-6 times.
4) Hard anodization of inner cavity
Hard anodization of the forged aluminum alloy cylinder inner cavity 4 was carried out in the following solutions:
the thickness of the hard anodized film layer prepared by forging the inner cavity 4 of the aluminum alloy cylinder body is 0.055-0.06. And (3) performance detection results: the microhardness of the film layer is 320Hv, which meets the requirement of the drawing.
5. And (4) mechanically processing the grinding inner cavity.
The invention is not the best known technology.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. A process method for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder is characterized by comprising the following steps: the micro-arc oxidation is carried out on the outer surface of the cylinder body, and the hard anodization treatment is carried out on the surface of the inner cavity, and the specific process route is as follows: the whole aluminum alloy cylinder body is forged by micro-arc oxidation → the inner cavity is ground by mechanical processing → the outer surface is protected by insulation → the inner cavity is hard anodized → the inner cavity is ground by mechanical processing.
2. The process method for micro-arc oxidation and hard anodization of the forged aluminum alloy cylinder body as recited in claim 1, wherein: the thickness of the micro-arc oxidation film layer is within the range of 0.03-0.08, and the thickness of the hard oxidation film layer is 0.05-0.08.
3. The process method for micro-arc oxidation and hard anodization of the forged aluminum alloy cylinder body as recited in claim 1, wherein: before hard anodizing of the inner cavity, the outer surface of the cylinder body is subjected to insulation protection by using AC850 chemical milling protective paint, and the cylinder body is brushed for 4-6 times.
4. The process for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder as claimed in claim 1, wherein the outer surface (3) of the forged aluminum alloy cylinder, the inner cavity (4) of the forged aluminum alloy cylinder, the small holes (2) at the tail end and the chamfer (5) at the transition area are subjected to integral micro-arc oxidation in the following solutions:
5. the process for micro-arc oxidation and hard anodization of a forged aluminum alloy cylinder according to claim 1, wherein the hard anodization of the inner cavity (4) of the forged aluminum alloy cylinder is performed in the following solution:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200212.3A CN110965100A (en) | 2019-11-29 | 2019-11-29 | Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200212.3A CN110965100A (en) | 2019-11-29 | 2019-11-29 | Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110965100A true CN110965100A (en) | 2020-04-07 |
Family
ID=70032099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200212.3A Pending CN110965100A (en) | 2019-11-29 | 2019-11-29 | Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110965100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210635A (en) * | 2021-05-28 | 2021-08-06 | 江苏神通阀门股份有限公司 | Machining method of cylinder block |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554806A (en) * | 2003-12-23 | 2004-12-15 | 长安大学 | Micro arc oxidation treating process for aluminium alloy cylinder inner surface |
| JP2008056953A (en) * | 2006-08-29 | 2008-03-13 | Nissin Kogyo Co Ltd | Anodizing method |
| CN102041538A (en) * | 2009-10-22 | 2011-05-04 | 上海航天精密机械研究所 | Method for preparing aluminum-copper alloy microarc oxidation film |
| CN103540986A (en) * | 2012-07-12 | 2014-01-29 | 托马斯有限公司 | Method for anodising surfaces of metallic hollow bodies |
| CN204097585U (en) * | 2014-11-10 | 2015-01-14 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of supplementary unit for cylindrical shell deep hole differential arc oxidation |
| CN104562141A (en) * | 2015-01-09 | 2015-04-29 | 哈尔滨东安发动机（集团）有限公司 | Aerial aluminum alloy micro-arc oxidation method |
| CN105369316A (en) * | 2015-11-23 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for micro-arc oxidation coating layer on surface of cast aluminum alloy |
-
2019
- 2019-11-29 CN CN201911200212.3A patent/CN110965100A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554806A (en) * | 2003-12-23 | 2004-12-15 | 长安大学 | Micro arc oxidation treating process for aluminium alloy cylinder inner surface |
| JP2008056953A (en) * | 2006-08-29 | 2008-03-13 | Nissin Kogyo Co Ltd | Anodizing method |
| CN102041538A (en) * | 2009-10-22 | 2011-05-04 | 上海航天精密机械研究所 | Method for preparing aluminum-copper alloy microarc oxidation film |
| CN103540986A (en) * | 2012-07-12 | 2014-01-29 | 托马斯有限公司 | Method for anodising surfaces of metallic hollow bodies |
| CN204097585U (en) * | 2014-11-10 | 2015-01-14 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of supplementary unit for cylindrical shell deep hole differential arc oxidation |
| CN104562141A (en) * | 2015-01-09 | 2015-04-29 | 哈尔滨东安发动机（集团）有限公司 | Aerial aluminum alloy micro-arc oxidation method |
| CN105369316A (en) * | 2015-11-23 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for micro-arc oxidation coating layer on surface of cast aluminum alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210635A (en) * | 2021-05-28 | 2021-08-06 | 江苏神通阀门股份有限公司 | Machining method of cylinder block |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102168568B (en) | Novel hydraulic support upright post for surface preservative treatment and surface preservative treatment method thereof | |
| CA1131522A (en) | Aluminium alloy cylinder and manufacturing method thereof | |
| CN101275606A (en) | Manufacturing process of high-power low-speed diesel shaft bushing | |
| CN102139841A (en) | Hydraulic support lifting jack provided with stainless steel sleeve and assembly method for stainless steel sleeve | |
| CN111545584B (en) | Cold-drawing honing manufacturing method for thin-wall cylinder pressure-resistant cabin of underwater vehicle | |
| CN102126087A (en) | Millisecond laser processing and postprocessing process for no-recasting-layer micro-deep holes | |
| CN104588682A (en) | Turning method of long thin wall composite shell body formed by metal and glass fiber reinforced plastics | |
| CN110965100A (en) | Micro-arc oxidation and hard anodization process method for forged aluminum alloy cylinder | |
| US20080248214A1 (en) | Method of forming an oxide coating with dimples on its surface | |
| CN105479097A (en) | CuCr contact surface finishing equipment and method | |
| CN113695846A (en) | Manufacturing method of aluminum alloy ring rail for welding robot | |
| CN112593265A (en) | Local electroplating method | |
| US6435723B1 (en) | Split bearing arrangement and method of making same | |
| CN111271184A (en) | Engine cylinder block cylinder hole wall structure and technological method | |
| CN103978346A (en) | Manufacturing process of piston ring | |
| CN106695033A (en) | Electrolytic machining method for maintaining and remanufacturing of aeroengine | |
| CN111843389B (en) | Centrifugal pump volute machining method | |
| US20150202702A1 (en) | Gas turbine engine cast structure method for finishing | |
| CN103527340B (en) | Engine cylinder and reproducing method thereof | |
| CN204828281U (en) | Wind turbine generator system becomes oar bearing | |
| CN214533085U (en) | Aeroengine spoiler | |
| CN211819676U (en) | Hole wall structure of cylinder hole of engine cylinder block | |
| CN115255527A (en) | Composite fan blade, metal edge-wrapping inner surface machining tool and machining method | |
| CN110977346A (en) | Steel product processing technology | |
| CN216005984U (en) | Bearing surface protection composite coating structure |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |