CN207176094U - A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface - Google Patents
A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface Download PDFInfo
- Publication number
- CN207176094U CN207176094U CN201721197850.0U CN201721197850U CN207176094U CN 207176094 U CN207176094 U CN 207176094U CN 201721197850 U CN201721197850 U CN 201721197850U CN 207176094 U CN207176094 U CN 207176094U
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- CN
- China
- Prior art keywords
- cylindrical member
- aluminium alloy
- top end
- end cover
- alloy cylindrical
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Abstract
It the utility model is related to field of electroplating, more particularly to a kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface, including top end cover, bottom head covers, auxiliary cathode and impressed current anode；The beneficial effects of the utility model are：By way of fixing auxiliary cathode in two end cap centre bore; cylindrical member internal powerline power is evenly distributed; conventional oxidation mode lower inner surface edge is avoided with depths situation in uneven thickness to occur; the rational structure design of auxiliary mould is protected and in end cap bottom design seal washer by outer surface; and packing ring and workpiece bottom are in close contact; the good protection to outer surface of workpiece can be realized, and the oxidation free layer interface of the differential arc oxidation film layer of inner surface and outer surface is clearly regular.
Description
Technical field
It the utility model is related to field of electroplating, more particularly to a kind of setting for aluminium alloy cylindrical member micro-arc oxidation of inner surface
It is standby.
Background technology
Aluminum alloy differential arc oxidation technology be it is a kind of in the electrolyte containing specific ion by electrion handle and electricity
The collective effect of chemical oxidation, in the process for treating surface of aluminum alloy material surface growth in situ ceramic layer.The technology will treat oxygen
The Al-alloy parts of change are placed in oxidation trough electrolyte as anode, by stainless steel trough body or are lifted on the stainless of both sides in groove
Steel pole plate is as negative electrode, and when applying high voltage between the two poles of the earth, Al-alloy parts surface can produce strong micro-arc discharge, Jin Er
One layer of oxide-film with ceramic speciality of Surface Creation.Al-alloy parts are as being cylindrical member, due to the effect of blocking of outer wall, power line
Endoporus depths can not be arrived at, the oxidation rate at outer surface and inner surface edge is much larger than inner surface depths, the workpiece after oxidation
Inner surface depths thicknesses of layers is more much smaller than the thicknesses of layers at other positions, thus inner surface cannot get preferable film in uniform thickness
Layer, can not meet design requirement.
Utility model content
The utility model is directed to the problem of inside and outside film thickness during existing aluminium alloy cylindrical member differential arc oxidation is inconsistent, there is provided one
Equipment of the kind for aluminium alloy cylindrical member micro-arc oxidation of inner surface.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：It is micro- that one kind is used for aluminium alloy cylindrical member inner surface
The equipment of arc oxidation, it is characterised in that including top end cover, bottom head covers, auxiliary cathode and impressed current anode, the top end cover
With the bottom head covers with aluminium alloy cylindrical member shape consistent and internal diameter be more than the aluminium alloy cylindrical member external diameter, the top
End cap and the upper port airtight connection of the aluminium alloy cylindrical member, the lower port of the bottom head covers and the aluminium alloy cylindrical member
The center of airtight connection, the top end cover and the bottom head covers axis direction is provided with manhole, and the auxiliary is cloudy
Pole passes from the top end cover through the manhole from the bottom head covers, the top end cover and the bottom head covers
Provided with symmetrical circular hole, the top end cover and the bottom head covers airtight connection, the impressed current anode is along the top end cover
Wind after the aluminium alloy cylindrical member one week with the bottom head covers connecting line and stretched out at airtight interface.
Further, the upper port of the top end cover and the aluminium alloy cylindrical member uses the top sealing gasket of silica gel material
Airtight connection is enclosed, the lower port of the bottom head covers and the aluminium alloy cylindrical member is close using the bottom sealed packing ring of silica gel material
Close connection.
Further, the auxiliary cathode is cylindrical type stainless steel, and diameter is identical with the manhole diameter, the auxiliary
Negative electrode is fixed from one end that the bottom head covers pass with nut, and the other end is connected with power cathode；The impressed current anode material
For fine aluminium, it is connected with positive source.
The beneficial effects of the utility model are：By way of fixing auxiliary cathode in two end cap centre bore, in cylindrical member
Portion's electric force lines distribution is uniform, avoids conventional oxidation mode lower inner surface edge and occurs with depths situation in uneven thickness.It is logical
Cross the outer surface rational structure design of protection auxiliary mould and in end cap bottom design seal washer, and by packing ring and workpiece bottom
It is in close contact, can realizes the good protection to outer surface of workpiece, and the differential arc oxidation film layer of inner surface and outer surface is non-
Oxide interface is clearly regular.Cylindrical member outer surface is implemented to protect using the method, only allows inner surface to aoxidize, substantially reduces
The power of oxidation power supply, the equipment operation is simple, dependable performance, reusable, finally generates one layer in interior surface in situ
Thickness is controllable, thickness range in the ceramic film of 10-200 microns, increase substantially the wearability of cylindrical member inwall and using the longevity
Life, reduce production cost.
Brief description of the drawings
Fig. 1 is cylindrical member frock work assembling schematic diagram, and wherein each several part is respectively：
1 auxiliary cathode；
2 upper sealing gaskets；
3 top end covers；
4 impressed current anodes；
5 bottom head covers；
6 bottom sealed packing rings；
7 nuts；
8 aluminium alloy cylindrical members.
Embodiment
The utility model is described below in conjunction with example, example is served only for explaining the utility model, not uses
In restriction the scope of the utility model.
A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface, including top end cover 3, bottom head covers 5, auxiliary
Negative electrode 1 and impressed current anode 4, top end cover 3 and bottom head covers 5 are consistent with the shape of aluminium alloy cylindrical member 8 and internal diameter is more than aluminium alloy
The external diameter of cylindrical member 8, the upper port airtight connection of top end cover 3 and aluminium alloy cylindrical member 8, bottom head covers 5 and aluminium alloy tubular
The center of the lower port airtight connection of part 8, top end cover 3 and the axis direction of bottom head covers 5 is provided with manhole, and auxiliary is cloudy
Pole 1 passes from top end cover 3 through manhole from bottom head covers 5, and top end cover 3 is provided with symmetrical circular hole with bottom head covers 5,
Top end cover 3 and the airtight connection of bottom head covers 5, impressed current anode 4 wind aluminium alloy along top end cover 3 and the connecting line of bottom head covers 5
Cylindrical member is stretched out after one week at airtight interface.
Wherein, the upper port of top end cover 3 and aluminium alloy cylindrical member 8 is closed using the upper sealing gasket 2 of silica gel material
The lower port of connection, bottom head covers 5 and aluminium alloy cylindrical member 8 uses the airtight connection of bottom sealed packing ring 6 of silica gel material.Auxiliary
Negative electrode 1 is cylindrical type stainless steel, and diameter is identical with manhole diameter, one end spiral shell that auxiliary cathode 1 passes from bottom head covers
Cap is fixed, and the other end is connected with power cathode.The material of impressed current anode 4 is fine aluminium, is connected with positive source.
When differential arc oxidation is carried out to aluminium alloy cylindrical member, each part first is assembled by said structure, what is assembled
Equipment is inserted in oxidation trough electrolyte, switch on power carry out differential arc oxidation, due to auxiliary cathode along axis penetrate aluminium alloy cylinder
Shape part, potential is identical everywhere for aluminium alloy cylindrical member inwall after energization, can carry out the reaction of same degree simultaneously, make electroplating film uniform
Generation；Symmetrical circular hole is set in top end cover and bottom head covers, electrolyte can be made to form circulation, ensures that differential arc oxidation atmosphere is steady
It is fixed.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (3)
1. a kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface, it is characterised in that including top end cover, bottom end
Lid, auxiliary cathode and impressed current anode, the top end cover and the bottom head covers are consistent with aluminium alloy cylindrical member shape and internal diameter
More than the external diameter of the aluminium alloy cylindrical member, the upper port airtight connection of the top end cover and the aluminium alloy cylindrical member, institute
State the lower port airtight connection of bottom head covers and the aluminium alloy cylindrical member, the top end cover and the bottom head covers axis side
To center be provided with manhole, the auxiliary cathode is from the top end cover through the manhole from the bottom
End cap passes, and the top end cover is provided with symmetrical circular hole, the top end cover and the bottom head covers with the bottom head covers
Airtight connection, the impressed current anode wind the aluminium alloy cylindrical member one along the top end cover and the bottom head covers connecting line
Stretched out at Zhou Houcong airtight interfaces.
2. the equipment according to claim 1 for aluminium alloy cylindrical member micro-arc oxidation of inner surface, it is characterised in that described
The upper port of top end cover and the aluminium alloy cylindrical member uses the upper sealing gasket airtight connection of silica gel material, the bottom
The lower port of end cap and the aluminium alloy cylindrical member uses the bottom sealed packing ring airtight connection of silica gel material.
3. the equipment according to claim 1 for aluminium alloy cylindrical member micro-arc oxidation of inner surface, it is characterised in that described
Auxiliary cathode is cylindrical type stainless steel, and diameter is identical with the manhole diameter, and the auxiliary cathode is from the bottom head covers
The one end passed is fixed with nut, and the other end is connected with power cathode, and the impressed current anode material is fine aluminium, is connected with positive source
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721197850.0U CN207176094U (en) | 2017-09-19 | 2017-09-19 | A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721197850.0U CN207176094U (en) | 2017-09-19 | 2017-09-19 | A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207176094U true CN207176094U (en) | 2018-04-03 |
Family
ID=61746891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721197850.0U Expired - Fee Related CN207176094U (en) | 2017-09-19 | 2017-09-19 | A kind of equipment for aluminium alloy cylindrical member micro-arc oxidation of inner surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207176094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881231A (en) * | 2019-03-12 | 2019-06-14 | 河南平高电气股份有限公司 | Cylindrical workpiece is surface-treated auxiliary electrode and air cylinder anodic oxidation device |
| CN112095131A (en) * | 2020-08-24 | 2020-12-18 | 中国兵器工业第五九研究所 | Tool equipment and method for preparing closed cylindrical inner cavity ceramic layer |
-
2017
- 2017-09-19 CN CN201721197850.0U patent/CN207176094U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881231A (en) * | 2019-03-12 | 2019-06-14 | 河南平高电气股份有限公司 | Cylindrical workpiece is surface-treated auxiliary electrode and air cylinder anodic oxidation device |
| CN112095131A (en) * | 2020-08-24 | 2020-12-18 | 中国兵器工业第五九研究所 | Tool equipment and method for preparing closed cylindrical inner cavity ceramic layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20180919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |