CN2755106Y - Alumina-magnesia alloy pipe and abnormal member micro-arc oxidizing treater - Google Patents
Alumina-magnesia alloy pipe and abnormal member micro-arc oxidizing treater Download PDFInfo
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- CN2755106Y CN2755106Y CN 200420086318 CN200420086318U CN2755106Y CN 2755106 Y CN2755106 Y CN 2755106Y CN 200420086318 CN200420086318 CN 200420086318 CN 200420086318 U CN200420086318 U CN 200420086318U CN 2755106 Y CN2755106 Y CN 2755106Y
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Abstract
The utility model relates to a micro-arc oxidizing MAO treater for the inner surfaces of aluminum/magnesium alloy pipes and abnormal members, which comprises a power supply and an oxidizing fluid bath, wherein an aluminum/magnesium alloy member is arranged in the oxidizing fluid bath; a stainless steel pipe is arranged in the aluminum/magnesium alloy member connected with the positive electrode of the power supply as an anode, and the stainless steel pipe is connected with the negative electrode of the power supply as a cathode. A stainless steel plate can also be placed in the oxidizing fluid bath and is connected together with the stainless steel pipe and the negative electrode of the power supply as a cathode. The power supply is a dc pulse power source. Because of the adoption of the structure, the utility model can carry out oxidation treatment on the inner and the outer surfaces of the pipes, and solve the surface anti-corrosive problem of corruptible alloy such as aluminum, magnesium, etc. For an aluminum alloy radiator, the anti-corrosive problem of the inner surface is solved, and simultaneously the heat radiation property of the outer surface is not influenced.
Description
Technical field
The utility model relates to a kind of aluminium or magnesium alloy pipe internal surface protection treatment unit, particularly a kind of aluminium magnesium alloy pipe and abnormal member internal surface differential arc oxidation MAO treatment unit.
Prior art
For weight reduction, improve carrying capacity and speed, the continuous instead of steel iron material of aluminium and alloy thereof becomes one of the widest metallic substance of purposes.It has that density is little, in light weight, specific tenacity is high, favorable conductive and heat conductivility.Aluminium is the very strong metal of a kind of chemically reactive, can form one deck passive film on the surface under the natural condition, and about 4nm is thick for this tunic, and porous is and inhomogeneous, and corrosion stability is poor.In general, this natural oxide film is to be stable in the aqueous solution of 5-8 at pH value.The solidity to corrosion of aluminium in alkaline aqueous solution is poor, is 5-8 and exists under the condition of chlorion at pH value, and its corrosion rate increases, even spot corrosion takes place.The electropotential of aluminium is lower, in the atmospheric environment of humidity, and not surface treated aluminum alloy part exposure, owing to exist impurity, the inhomogeneous negative electrode phase that constitutes mutually, form small local element with aluminum substrate, electrochemical reaction takes place, variable color, point corrosion take place easily.When aluminium when contacting than its active other metallographic phase, aluminium can be corroded as anode, especially then can accelerated corrosion in the aqueous solution of high acid of electric conductivity or salt.In actual production, the surface treatment of aluminium alloy will be according to the actual military service situation of workpiece, and the size of workpiece shape and protective treatment area is selected suitable surface treatment.The surface treatment of at present relevant aluminium alloy mainly comprises: anodic oxidation, chemical oxidation, electroless plating, plating, thermospray, laser remolten, application paint film and differential arc oxidation processing etc.
Magnesium alloy is because the little (1.74g/cm of proportion
3) and big and good specific tenacity, the specific rigidity characteristic of energy decrement coefficient, become very important modern industry material day by day.And, be considered to " green material " of tool development and application potentiality of 21st century because returnability, anti-electromagnetic interference and the screening ability of magnesium alloy is strong.But magnesium is the most negative metal of current potential in practical metal (just might electrochemical reaction be taken place during 2.363eV), with other metallic contact and corrode.Though magnesium is the same with aluminium to be easy to oxidation and to have formed the dark-coloured oxide film that one deck has certain protective value in atmosphere, cavernous oxide film there is no good corrosion prevention effect to magnesium alloy substrate.Therefore, because the relatively poor corrosion resisting property of its natural oxide film, magnesium alloy just can not be used without suitable surface treatment.At present, main Mg alloy surface processing has: chemical conversion processing, anodic oxidation, overlay coating processing and differential arc oxidation processing etc.
No matter for above-mentioned any processing, traditional processing mode mainly is to be used for the outside surface of aluminium alloy or magnesium alloy component is handled at present, and for the bigger tubing of fineness ratio or have dark blind hole work piece inner surface, to adopt above-mentioned processing be infeasible owing to be subjected to the restriction (as the covering power of electroplate liquid in plating) of process unit or other influence factor.
The utility model content
The purpose of this utility model be to provide a kind of aluminium magnesium alloy pipe and abnormal member micro arc oxidation treatment device, simple in structure, easy to operate, oxidation effectiveness is good, adaptability is strong.
The technical solution of the utility model is to solve like this: aluminium magnesium alloy pipe and abnormal member micro arc oxidation treatment device comprise a power supply, the oxidation liquid bath, in the oxidation liquid bath, be provided with aluminium, magnesium alloy member, inside at aluminium, magnesium alloy member is equipped with stainless steel tube, the positive pole that aluminium, magnesium alloy member connect power supply is as anode, and stainless steel tube connects the negative pole of power supply as negative electrode.
The utility model also can be placed stainless steel plate in filling the oxidation liquid bath, stainless steel plate and stainless steel tube link together, and links to each other as negative electrode with the negative pole of power supply.
Power supply adopts direct current pulse power source, for aluminium alloy voltage value at 600V-650V; For magnesium alloy, magnitude of voltage is at 400V-500V.
The utility model is owing to adopt said structure to carry out oxide treatment to the surfaces externally and internally of pipe fitting, solved the anticorrosion problem of perishable alloy surfaces such as aluminium, magnesium, for aluminium alloy heat radiator, both solved the anticorrosion problem of internal surface, do not influence the thermal diffusivity of outside surface simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the inside and outside micro arc oxidation treatment device structural representation of the utility model.
Specific embodiment
Accompanying drawing is a specific embodiment of the utility model;
Below in conjunction with accompanying drawing content of the present utility model is described in further details;
With reference to shown in Figure 1, the utility model comprises a power supply 1, oxidation liquid bath 2, in oxidation liquid bath 2, be provided with aluminium, magnesium alloy member 3, inside at aluminium, magnesium alloy member 3 is equipped with stainless steel tube 6, the positive pole that aluminium, magnesium alloy member 3 connect power supply 1 is as anode, and stainless steel tube 6 connects the negative pole of power supply 1 as negative electrode.As only needing the internal surface of protection tubing or abnormal member; and outside surface need not handled to improve radiating effect (as aluminium alloy heat radiator); pending aluminium, magnesium alloy member 3 are built in aluminium, magnesium alloy member 3 inside as anode, stainless steel tube 6 as negative electrode; then differential arc oxidation solution 4 is flowed into by tubing one end; the other end flows out, and can form layer of even differential arc oxidation corrosion prevention film at the internal surface of tubing.
With reference to shown in Figure 2, in filling oxidation liquid bath 2, place stainless steel plate 5, stainless steel plate 5 and stainless steel tube 6 link together, and link to each other as negative electrode with the negative pole of power supply 1.When handling surfaces externally and internally, with pending aluminium, magnesium alloy member 3 as anode, stainless steel plate 5 as negative electrode; An additional then stainless steel tube 6 is built in aluminium, magnesium alloy member 3 inside (attention prevents that stainless steel is with the workpiece short circuit) links together with 1 negative electrode of the power supply in the oxidation liquid bath 2, put into differential arc oxidation solution 4 and pressurize, by this inside and outside surface of mode tubing all oxidable layer of even differential arc oxidation corrosion prevention film.
Power supply adopts direct current pulse power source, for aluminium alloy voltage value at 600V-650V; For magnesium alloy, magnitude of voltage is at 400V-500V.
Realize that aluminium, magnesium alloy pipe and the corrosion proof principle of abnormal member internal surface are, the oxidation generation that utilizes ceramic layer in the microarc oxidation treatment process is constantly to form this principle that thickens by under certain strength of electric field a process in the constantly puncture of the original oxidation insulating layer of workpiece surface, fusion, oxidation and rapid hardening, reached adjustment, control by adjusting negative electrode and anodic relative position, and then realization makes tubing or abnormal member internal surface form corrosion resistant arc differential oxide ceramic layer to workpiece surface strength of electric field.
For aluminium alloy, differential arc oxidation solution 4 is meant that alkaline electrolysis solution compares with cumulative volume by weight: by Sodium hexametaphosphate 99 10g/L-20g/L, and water glass 5g/L-10g/L, Sodium orthomolybdate 10g/L-15g/L, yellow soda ash 5g/L-8g/L, sodium wolframate 2g/L-5g/L forms.The pH value scope of alkaline electrolysis solution: 8～12.
For magnesium alloy, differential arc oxidation solution 4 is meant that alkaline electrolysis solution compares with cumulative volume by weight: Sodium hexametaphosphate 99 (10-15g/L), Sodium Tetraborate (3-5g/L) and sodium hydroxide (5-8g/L), Potassium monofluoride (10-15g/L).PH value scope: 10～12.
Built-in stainless steel tube is connect the negative pole of power supply, and outer pipe wall connects the positive pole of power supply, by power supply tubing member is applied voltage, and for aluminium alloy, magnitude of voltage is at 600V-650V, and the time is 5～10min.Described power supply adopts direct current pulse power source; For magnesium alloy, magnitude of voltage is at 400V-500V, and the time is 5～10min.
Claims (3)
1, aluminium or magnesium alloy pipe and abnormal member micro arc oxidation treatment device, comprise a power supply (1), oxidation liquid bath (2), in oxidation liquid bath (2), be provided with aluminium, magnesium alloy member (3), it is characterized in that, inside at aluminium, magnesium alloy member (3) is equipped with stainless steel tube (6), and the positive pole that aluminium, magnesium alloy member (3) connect power supply (1) is as anode, and stainless steel tube (6) connects the negative pole of power supply (1) as negative electrode.
2, aluminium according to claim 1 or magnesium alloy pipe and abnormal member micro arc oxidation treatment device, it is characterized in that, one stainless steel plate (5) is set in filling oxidation liquid bath (2), stainless steel plate (5) and stainless steel tube (6) link together, and link to each other as negative electrode with the negative pole of power supply (1).
3, aluminium according to claim 1 or magnesium alloy pipe and abnormal member micro arc oxidation treatment device is characterized in that, power supply adopts direct current pulse power source, for aluminium alloy voltage value at 600V-650V; For magnesium alloy, magnitude of voltage is at 400V-500V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086318 CN2755106Y (en) | 2004-12-06 | 2004-12-06 | Alumina-magnesia alloy pipe and abnormal member micro-arc oxidizing treater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086318 CN2755106Y (en) | 2004-12-06 | 2004-12-06 | Alumina-magnesia alloy pipe and abnormal member micro-arc oxidizing treater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2755106Y true CN2755106Y (en) | 2006-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420086318 Expired - Fee Related CN2755106Y (en) | 2004-12-06 | 2004-12-06 | Alumina-magnesia alloy pipe and abnormal member micro-arc oxidizing treater |
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| CN (1) | CN2755106Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304706A (en) * | 2011-09-19 | 2012-01-04 | 南南铝业股份有限公司 | Anticorrosion treatment device and treatment method for surface of long and narrow runner of aluminium alloy radiator |
| CN103789810A (en) * | 2014-01-15 | 2014-05-14 | 哈尔滨东安发动机（集团）有限公司 | Method for preparing micro-arc oxidation ceramic film layer on surface of magnesium alloy |
| CN107546201A (en) * | 2017-06-08 | 2018-01-05 | 中国科学院理化技术研究所 | A kind of radiator of resistance to high-temperature corrosion of liquid metal |
| CN108368633A (en) * | 2015-09-03 | 2018-08-03 | 美特倍股份有限公司 | Form the improved method of the pipeline coatings of cylinder cover and thus obtained cylinder cover |
| CN108950648A (en) * | 2018-06-21 | 2018-12-07 | 东莞市依诺电子科技有限公司 | A kind of high anti-corrosion high reliability treatment process of spreader surface |
| CN111118567A (en) * | 2020-01-17 | 2020-05-08 | 西安凯美泰科环保科技有限公司 | Micro-arc oxidation device and preparation method of aviation packaging tray oxidation film layer |
| CN111893536A (en) * | 2019-12-23 | 2020-11-06 | 中国航发长春控制科技有限公司 | Tool clamp for micro-arc oxidation of inner cavity of double-cylinder actuator cylinder |
| CN113755921A (en) * | 2021-09-29 | 2021-12-07 | 上海交通大学 | Micro-arc oxidation device and treatment method |
| CN114059130A (en) * | 2021-12-30 | 2022-02-18 | 北京星航机电装备有限公司 | Micro-arc oxidation device and method for titanium alloy special-shaped cylinder part |
-
2004
- 2004-12-06 CN CN 200420086318 patent/CN2755106Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304706A (en) * | 2011-09-19 | 2012-01-04 | 南南铝业股份有限公司 | Anticorrosion treatment device and treatment method for surface of long and narrow runner of aluminium alloy radiator |
| CN103789810A (en) * | 2014-01-15 | 2014-05-14 | 哈尔滨东安发动机（集团）有限公司 | Method for preparing micro-arc oxidation ceramic film layer on surface of magnesium alloy |
| CN108368633A (en) * | 2015-09-03 | 2018-08-03 | 美特倍股份有限公司 | Form the improved method of the pipeline coatings of cylinder cover and thus obtained cylinder cover |
| CN107546201A (en) * | 2017-06-08 | 2018-01-05 | 中国科学院理化技术研究所 | A kind of radiator of resistance to high-temperature corrosion of liquid metal |
| CN108950648A (en) * | 2018-06-21 | 2018-12-07 | 东莞市依诺电子科技有限公司 | A kind of high anti-corrosion high reliability treatment process of spreader surface |
| CN111893536A (en) * | 2019-12-23 | 2020-11-06 | 中国航发长春控制科技有限公司 | Tool clamp for micro-arc oxidation of inner cavity of double-cylinder actuator cylinder |
| CN111118567A (en) * | 2020-01-17 | 2020-05-08 | 西安凯美泰科环保科技有限公司 | Micro-arc oxidation device and preparation method of aviation packaging tray oxidation film layer |
| CN111118567B (en) * | 2020-01-17 | 2022-03-25 | 西安凯美泰科环保科技有限公司 | Micro-arc oxidation device and preparation method of aviation packaging tray oxidation film layer |
| CN113755921A (en) * | 2021-09-29 | 2021-12-07 | 上海交通大学 | Micro-arc oxidation device and treatment method |
| CN114059130A (en) * | 2021-12-30 | 2022-02-18 | 北京星航机电装备有限公司 | Micro-arc oxidation device and method for titanium alloy special-shaped cylinder part |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |