CN101962791B - The treatment process of micro-arc oxidation hanger - Google Patents
The treatment process of micro-arc oxidation hanger Download PDFInfo
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- CN101962791B CN101962791B CN201010512067.5A CN201010512067A CN101962791B CN 101962791 B CN101962791 B CN 101962791B CN 201010512067 A CN201010512067 A CN 201010512067A CN 101962791 B CN101962791 B CN 101962791B
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Abstract
A kind for the treatment of process of micro-arc oxidation hanger: the material that hanger material selection is the same with needing the part of differential arc oxidation; Carry out the process of hanger differential arc oxidation before use, the final voltage of differential arc oxidation is higher than the differential arc oxidation voltage of pending part; Remove the micro-arc oxidation films at the contact place of hanger and part.The final voltage of differential arc oxidation is higher than the differential arc oxidation voltage 50 ~ 100V of pending part.Advantage of the present invention is: directly utilize existing oxidizing process just can implement, very convenient, reduces cost, reduces pollution; Hanger processes the micro-arc oxidation films obtained be combined with matrix well, use cost is very low, economizes on resources; Solve liquid level and air contact in production process and easily produce the problem of detonation, improve security.
Description
Technical field
The present invention relates to a kind of micro-arc oxidation hanger surface treatment method.
Background technology
Differential arc oxidation is also known as spark discharge deposition or plasma oxidation, that the metals such as magnalium titanium or its alloy are placed in aqueous electrolyte liquid as anode, under highfield voltage (generally higher than 300V) effect, make aluminum alloy surface occur microcell arc discharge, generation instantaneous high-temperature sinters, in a metal surface treatment technology of the Surface Creation oxide ceramics phase of metal or alloy.In micro-arc oxidation process, chemical oxidation, electrochemical oxidation and plasma oxidation effect exist simultaneously, and the forming process of ceramic coating is very complicated, and the film hardness obtained is high, good insulating, and bonding force is excellent.
In actual production the selection of hanger material and process very important, selecting to contact the disadvantages such as detonation with air by uneven, the liquid level of the starting the arc, rete pitting of contact, rete with dealing with improperly by causing, affecting and producing normally.
Owing to there is electrochemical dissolution problem in anode, general soluble metal, as copper, is not suitable for doing hanger in differential arc oxidation, otherwise under high voltages, hanger and feature contacts place dissolve very soon, cause tank liquor pollution effect coating mass.
Insoluble anode material, as plumbous and platinum, except price is valuable, can cause voltage to raise in treating processes, and part can not the phenomenon of the starting the arc.Although titanium alloy also has use in differential arc oxidation, have stronger selectivity to electrolytic solution, during as carried out aluminum alloy differential arc oxidation, titanium alloy hanger may in the electrolytic solution cannot the starting the arc and stop produce.
Conventional insulation measures is coated with insullac, although can play insulating effect, under the alkaline condition of high temperature, paint film more easily comes off, and needs constantly heavily to brush.
Because micro-arc oxidation process Anodic produces a large amount of oxygen, easily adsorb at hanger air and liquid level place, cause hanger surface oxygen content too high, run into electrical spark and blast, produce loud noise, time serious, tank liquor can be blown up and spill electrolyzer, affect production safety.
Summary of the invention
The object of this invention is to provide a kind of differential arc oxidation actual production hanger treatment process, this method can meet the needs of actual production, has simple and fast and practical feature.
Method of the present invention is:
1) material that hanger material selection is the same with needing the part of differential arc oxidation;
2) carry out the process of hanger differential arc oxidation before use, require that the final voltage of differential arc oxidation is higher than the differential arc oxidation voltage of pending part;
3) micro-arc oxidation films at the contact place of hanger and part is removed.
Advantage of the present invention is:
1), select the material identical with pending part to do hanger, do not need separately to join oxidation solution, directly utilize existing oxidizing process just can implement, very convenient, reduce cost, reduce pollution.
2), hanger processes the micro-arc oxidation films obtained be combined well with matrix, there will not be obscission, namely hanger process once can use down always, and use cost is very low, economizes on resources.
3), hanger is required to the differential arc oxidation voltage of final voltage higher than pending part of differential arc oxidation, general higher than 50-100V, object ensures that the thickness of this micro-arc oxidation films and resistance are higher than the thickness of part after differential arc oxidation and resistance, such hanger can not be broken down by high-voltage in micro-arc oxidation process, micro-arc oxidation films can play insulating effect, and after have employed anodized insulation, block the generation of electrical spark, solve liquid level and air contact in production process and easily produce the problem of detonation, improve security
4), hanger is after differential arc oxidation process, without the need to special process, only need sand paper or file be adopted to polish off the micro-arc oxidation films at the contact place of hanger and part, in dress extension process, ensure that part contacts well with hanger, when reusing, contact place is only needed again to polish, simple and convenient.
Embodiment
Embodiment 1
To 2024 aluminum alloy differential arc oxidations, require to obtain oxide film 50 μm.
2024 aluminium alloys are selected to do hanger material, by hanger at 2024 oxidized aluminum alloy groove internal oxidition, on hanger, the oxide film of 70 μm is obtained by technology controlling and process (as high current density or prolongation oxidization time), with sand paper, the contact place by hanger and aluminium part polishes off, aluminium part dress is hung on hanger, ensures that contact is good.Hanger is put into electrolyzer and is oxidized, and now only has aluminium part generation differential arc oxidation and hanger is oxidized again because insulation there will not be.After being oxidized complete cleaning, part is unloaded extension, as long as hanger and part contact place are again polished, hanger can continue to use.
Embodiment 2
BM8 magnesium alloy differential arc oxidation, requires thickness 20 μm.
BM8 is selected to do hanger material, by hanger at BM8 magnesium alloy oxidation trough internal oxidition, on hanger, the oxide film of 30 μm is obtained by technology controlling and process (as high current density or prolongation oxidization time), with sand paper, the contact place by hanger and magnesium part polishes off, magnesium part dress is hung on hanger, ensures that contact is good.Hanger is put into electrolyzer and is carried out differential arc oxidation production.After being oxidized complete cleaning, part is unloaded extension, as long as hanger and part contact place are again polished, hanger can continue to use.
Embodiment 3
TC4 titanium-alloy surface micro-arc oxidation, obtains the bio-compatibility thin film of titanium oxide of thickness 3-5 μm.TC4 titanium alloy is selected to do hanger material, by hanger at the differential arc oxidation groove internal oxidition containing calcium phosphorus, pass through technology controlling and process, high current density or prolongation oxidization time, hanger obtains the oxide film of 20 μm, with sand paper, the contact place by hanger and TC4 titanium alloy component polishes off, and hangs on hanger by TC4 titanium alloy component dress, ensures that contact is good.Hanger is put into electrolyzer and is carried out differential arc oxidation production.After being oxidized complete cleaning, part is unloaded extension, as long as hanger and part contact place are again polished, hanger can continue to use, and ensures continuous production.
Claims (1)
1. the treatment process of micro-arc oxidation hanger:
1) material that hanger material selection is the same with needing the part of differential arc oxidation;
2) carry out the process of hanger differential arc oxidation before use, the final voltage of differential arc oxidation is higher than the differential arc oxidation voltage 50 ~ 100V of pending part;
3) micro-arc oxidation films at the contact place of hanger and part is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512067.5A CN101962791B (en) | 2010-10-18 | 2010-10-18 | The treatment process of micro-arc oxidation hanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512067.5A CN101962791B (en) | 2010-10-18 | 2010-10-18 | The treatment process of micro-arc oxidation hanger |
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| Publication Number | Publication Date |
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| CN101962791A CN101962791A (en) | 2011-02-02 |
| CN101962791B true CN101962791B (en) | 2015-09-16 |
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| CN201010512067.5A Active CN101962791B (en) | 2010-10-18 | 2010-10-18 | The treatment process of micro-arc oxidation hanger |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101280450A (en) * | 2008-05-08 | 2008-10-08 | 南昌航空大学 | Micro-arc oxidation process for reducing surface friction coefficient of titanium alloy |
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| US20080086195A1 (en) * | 2006-10-05 | 2008-04-10 | Boston Scientific Scimed, Inc. | Polymer-Free Coatings For Medical Devices Formed By Plasma Electrolytic Deposition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101280450A (en) * | 2008-05-08 | 2008-10-08 | 南昌航空大学 | Micro-arc oxidation process for reducing surface friction coefficient of titanium alloy |
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| CN101962791A (en) | 2011-02-02 |
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