CN2929299Y - Connector for preventing corrosion at magnesium alloy cast piece connection point - Google Patents
Connector for preventing corrosion at magnesium alloy cast piece connection point Download PDFInfo
- Publication number
- CN2929299Y CN2929299Y CN 200620110914 CN200620110914U CN2929299Y CN 2929299 Y CN2929299 Y CN 2929299Y CN 200620110914 CN200620110914 CN 200620110914 CN 200620110914 U CN200620110914 U CN 200620110914U CN 2929299 Y CN2929299 Y CN 2929299Y
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- lining
- bolt
- packing ring
- bushing
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a connecting device for preventing the junction of magnesium alloy casting from corrosion. The connecting device comprises a bolt, a bushing which is sleeved on the bolt, gaskets provided on the two ends of the bushing, a nut connected with the bolt through screwed joint. The utility model is characterized in that the bushing sleeved on the bolt is an aluminum alloy bushing, the gaskets provided on the two ends of the bushing are aluminum alloy gaskets of which the aperture is as same size as that of the bushing, the external diameter of the aluminum alloy gaskets is larger than that of the aluminum alloy bushing, the internal and external wall surfaces and two axial surfaces are all covered by composite wearing-insulating protective layer with 10 to 15 micrometre. The utility model is capable of preventing the electrochemical corrosion caused by electric potential difference of different metal, and prolongs the service life of the magnesium alloy parts.
Description
Technical field
The utility model relates to a kind of connection set of metalwork, particularly a kind of connection set that prevents the corrosion of Mg alloy castings joint.
Background technique
Application of Magnesium is very extensive at present, and its using scope has comprised motorcycle, automobile, hand-operated tools, Aeronautics and Astronautics, ordnance etc.But because magnesium alloy has higher electrochemical corrosion potential, particularly contact corrosion resistant is poor, when make of magnesium alloy materials parts with after other metalworks than low potential closely contacts, form the rate of corrosion quickening of bigger current potential official post magnesium alloy.Usually magnesium alloy component connects, be the soundness that guarantees to connect, generally use is the bolt of making of steel material, nut, packing ring, these steel bolts, nut or steel packing ring directly are connected magnesium alloy component with the magnesium alloy component contact, because steel bolt, nut, packing ring all has excellent conducting performance, when being connected and fixed magnesium alloy component, metallic iron closely contacts the rate of corrosion of having accelerated magnesium alloy with magnesium metal, cause magnesium alloy component and the contacting point surface etching of steel link, cause to connect and become flexible, especially use at automobile, magnesium alloy component on the traffic tool such as motorcycle connects, and has the hidden danger that causes catastrophic effect.
Summary of the invention
The purpose of this utility model is to connect the problem that exists at Mg alloy castings by the metalwork than low potential, and a kind of connection set that prevents the corrosion of Mg alloy castings joint is provided.
The purpose of this utility model is achieved in that described connection set comprises bolt, is enclosed within lining on the bolt, is positioned at the packing ring at lining two ends, the nut that is connected with bolt thread.The lining that is enclosed within on the bolt is the aluminum alloy lining; the packing ring that is positioned at the lining two ends is the aluminum alloy packing ring; the aperture of aluminum alloy packing ring is identical with the aperture of aluminum alloy lining; the external diameter of aluminum alloy packing ring is greater than the external diameter of aluminum alloy lining, and two axial end surfaces of the inside and outside wall surface of described aluminum alloy lining and described aluminum alloy packing ring all are coated with 10～50 microns complex abrasion-proof insulating protective layer.
Described complex abrasion-proof insulating protective layer is an electrochemical oxidation layer.
Owing to adopted such scheme; on the steel bolt, put an inside and outside wall surface and all be coated with the aluminum alloy lining of 10～50 microns complex abrasion-proof insulating protective layer; the two ends of aluminum alloy lining have respectively and are enclosed within on the steel bolt; two axial end surfaces all are coated with the aluminum alloy packing ring of 10～50 microns complex abrasion-proof insulating protective layer, and described complex abrasion-proof insulating protective layer is an electrochemical oxidation layer.When connecting Mg alloy castings with this connection set, be inserted in formation location in two pairing holes of continuous Mg alloy castings with the aluminum alloy lining, place respectively at the two ends of aluminum alloy lining that the aperture is identical with the aperture of aluminum alloy lining, external diameter is greater than the aluminum alloy packing ring of aluminum alloy lining external diameter, the steel bolt passes packing ring and lining is threaded with steel nut, with two Mg alloy castings fastening press-fit link together.Because the electrochemical potentials of aluminum alloy and magnesium alloy is comparatively approaching, and, performances such as that the inside and outside wall surface of aluminum alloy lining and the electrochemical oxidation layer of aluminum alloy washer face have is wear-resisting, insulation, with them steel bolt and Mg alloy castings are separated, can avoid magnesium alloy to contact the electrochemical corrosion that brings with different metal, improve the working life of Mg alloy castings.This connection set uses the magnesium alloy component on the traffic tool such as automobile, motorcycle to connect, and can strengthen the Security of the traffic tool.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a kind of embodiment's schematic representation of the present utility model;
Fig. 2 is the cross-sectional schematic of aluminum alloy lining of the present utility model;
Fig. 3 is the cross-sectional schematic of aluminum alloy packing ring of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, described connection set comprises steel bolt 1, is enclosed within the aluminum alloy lining 2 on the bolt, is positioned at the aluminum alloy packing ring 3 at lining two ends, the steel nut 4 that is connected with bolt thread.The aperture of aluminum alloy packing ring is identical with the aperture of aluminum alloy lining; the external diameter of aluminum alloy packing ring is greater than the external diameter of aluminum alloy lining, and two axial end surfaces of the inside and outside wall surface of described aluminum alloy lining and described aluminum alloy packing ring all are coated with 10～50 microns complex abrasion-proof insulating protective layer 6.
It is 6061 the utility model to be described for example that following aluminum alloy lining adopts the trade mark.
When connecting Mg alloy castings with this connection set, be inserted in formation location in two pairing holes of continuous Mg alloy castings with aluminum alloy lining 2, place respectively at the two ends of aluminum alloy lining that the aperture is identical with the aperture of aluminum alloy lining, external diameter is greater than the aluminum alloy packing ring 3 of aluminum alloy lining external diameter, steel bolt 1 passes packing ring and lining is threaded with steel nut 4, with two Mg alloy castings 5 fastening press-fit link together.
The aluminium alloy electric chemical potential and the magnesium alloy of cause 6061 are approaching; its contact electricity chemical corrosion is lighter; and the inside and outside surface of aluminum alloy sleeve; made the complex abrasion-proof insulating protective layer on the aluminum alloy packing ring; avoided fully because the electrochemical corrosion that the different metal contact brings; the effect that prevents the corrosion of Mg alloy castings joint is best, and the working life of having improved Mg alloy castings.
Adopt the aluminum alloy material of other trades mark of connection set structure of the present utility model to make the aluminum alloy lining, have above-mentioned effect same.
The utility model electrochemical oxidation layer is an anodic oxide coating, or hard anodizing horizon, or the differential arc oxidation layer, or the plasma electrolysis oxidation layer, can avoid the direct contact of different metal, prevent that effectively magnesium alloy from contacting the electrochemical corrosion that brings with different metal.
Claims (3)
1. connection set that prevents Mg alloy castings joint corrosion; described connection set comprises bolt; be enclosed within the lining on the bolt; be positioned at the packing ring at lining two ends; the nut that is connected with bolt thread; it is characterized in that: the lining that is enclosed within on the bolt is the aluminum alloy lining; the packing ring that is positioned at the lining two ends is the aluminum alloy packing ring; the aperture of aluminum alloy packing ring is identical with the aperture of aluminum alloy lining; the external diameter of aluminum alloy packing ring is greater than the external diameter of aluminum alloy lining, in the described aluminum alloy lining; two axial end surfaces of outer wall surface and described aluminum alloy packing ring all are coated with 10～50 microns complex abrasion-proof insulating protective layer.
2. the connection set that prevents the corrosion of Mg alloy castings joint according to claim 1, it is characterized in that: described complex abrasion-proof insulating protective layer is an electrochemical oxidation layer.
3. the connection set that prevents the corrosion of Mg alloy castings joint according to claim 2, it is characterized in that: described electrochemical oxidation layer is an anodic oxide coating, or hard anodizing horizon, or the differential arc oxidation layer, or the plasma electrolysis oxidation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110914 CN2929299Y (en) | 2006-07-05 | 2006-07-05 | Connector for preventing corrosion at magnesium alloy cast piece connection point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110914 CN2929299Y (en) | 2006-07-05 | 2006-07-05 | Connector for preventing corrosion at magnesium alloy cast piece connection point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929299Y true CN2929299Y (en) | 2007-08-01 |
Family
ID=38307681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620110914 Expired - Fee Related CN2929299Y (en) | 2006-07-05 | 2006-07-05 | Connector for preventing corrosion at magnesium alloy cast piece connection point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929299Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579980A (en) * | 2012-07-27 | 2014-02-12 | 中国电力科学研究院 | Groove type abrasion resistant fitting |
| CN104747795A (en) * | 2014-08-18 | 2015-07-01 | 吴华林 | Straight column type oilless lining |
| CN105318102A (en) * | 2014-08-04 | 2016-02-10 | 许炎章 | Shouldered oil-free lining |
| CN105757078A (en) * | 2016-05-04 | 2016-07-13 | 北京新能源汽车股份有限公司 | Metal component and vehicle with same |
| US9494226B2 (en) | 2013-12-26 | 2016-11-15 | Hyundai Motor Company | Pulley structure and damper pulley |
| CN107322243A (en) * | 2017-07-25 | 2017-11-07 | 无锡鸿海龙船机有限公司 | A kind of hydraulic bolt processing technology |
| CN107536619A (en) * | 2016-06-27 | 2018-01-05 | 富士胶片株式会社 | Radioactive ray detect magazine |
| CN108050147A (en) * | 2017-10-25 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The high corrosion-resistant method that magnesium alloy component is connected with dissimilar metal fastener threads |
| CN111609027A (en) * | 2020-06-03 | 2020-09-01 | 西北工业大学 | A bushing and method for compensating the deviation of connecting holes of aircraft wall panels |
| CN115529757A (en) * | 2022-08-12 | 2022-12-27 | 中国航空无线电电子研究所 | A lightweight airborne avionics case |
-
2006
- 2006-07-05 CN CN 200620110914 patent/CN2929299Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579980A (en) * | 2012-07-27 | 2014-02-12 | 中国电力科学研究院 | Groove type abrasion resistant fitting |
| US9494226B2 (en) | 2013-12-26 | 2016-11-15 | Hyundai Motor Company | Pulley structure and damper pulley |
| CN105318102A (en) * | 2014-08-04 | 2016-02-10 | 许炎章 | Shouldered oil-free lining |
| CN104747795A (en) * | 2014-08-18 | 2015-07-01 | 吴华林 | Straight column type oilless lining |
| CN105757078A (en) * | 2016-05-04 | 2016-07-13 | 北京新能源汽车股份有限公司 | Metal component and vehicle with same |
| CN107536619A (en) * | 2016-06-27 | 2018-01-05 | 富士胶片株式会社 | Radioactive ray detect magazine |
| CN107322243A (en) * | 2017-07-25 | 2017-11-07 | 无锡鸿海龙船机有限公司 | A kind of hydraulic bolt processing technology |
| CN108050147A (en) * | 2017-10-25 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The high corrosion-resistant method that magnesium alloy component is connected with dissimilar metal fastener threads |
| CN111609027A (en) * | 2020-06-03 | 2020-09-01 | 西北工业大学 | A bushing and method for compensating the deviation of connecting holes of aircraft wall panels |
| CN111609027B (en) * | 2020-06-03 | 2021-10-01 | 西北工业大学 | A method for compensating the deviation of connecting holes of aircraft wall panels |
| CN115529757A (en) * | 2022-08-12 | 2022-12-27 | 中国航空无线电电子研究所 | A lightweight airborne avionics case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING BOAO MG-AL MANUFACTURING CO., LTD. Free format text: FORMER OWNER: BOAO MAGNESIUM INDUSTRY CO., LTD., CHONGQING Effective date: 20110525 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 401122 NO. D25, ECONOMIC DEVELOPMENT PARK, NORTH NEW ZONE, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, CHONGQING CITY TO: 401122 D25, ECONOMIC DEVELOPMENT PARK, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110525 Address after: The 401122 Chongqing open area by opening D25 Patentee after: Chongqing Boao Mg-Al Manufacturing Co., Ltd. Address before: The northern New District of Chongqing city in 401122 by the economic and Technological Development Zone Kaiyuan No. D25 Patentee before: Chongqing Boao Magnesium Industrial Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20120705 |