CN1067932A - Vacuum bubble-obviating method for electric casting - Google Patents
Vacuum bubble-obviating method for electric casting Download PDFInfo
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- CN1067932A CN1067932A CN 91108101 CN91108101A CN1067932A CN 1067932 A CN1067932 A CN 1067932A CN 91108101 CN91108101 CN 91108101 CN 91108101 A CN91108101 A CN 91108101A CN 1067932 A CN1067932 A CN 1067932A
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- electroforming
- bubble
- solution
- air
- obviating
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Abstract
A kind of vacuum bubble-obviating method for electric casting belongs to galvanoplastics.It is with electroforming work box (7) sealing, after the energising electroforming, extracts the interior air of sealed electrical casting work box gradually out with vacuum pump (8), make to produce negative pressure in the case, make the micro-bubble volume that is trapped on the cathode surface become big, it is big that suffered buoyancy becomes, thereby the disengaging cathode surface emerges.And by periodically air being introduced in the solution of electroforming work nest (6) by the inlet pipe (5) of air inlet magnetic valve (9) control, make solution produce strenuous exercise, the anticathode surface is stirred and is washed away, thereby purpose, the reduction of reach rapid, in time getting rid of bubble completely, eliminate the concentration polarization of solution, accelerate metal deposition speed, guarantee cast layer quality.
Description
Vacuum is got rid of the bubble-tube method electroforming and is belonged to galvanoplastics.
The electroforming of carrying out now all is to carry out under normal pressure; in the electroforming process; with metal ion at cathode electrodeposition simultaneously; having gas folds on cathode surface; this gas can be trapped in cathode surface with bubble form; hinder metal deposition, cause cast(ing) surface defectives such as pit pin hole to occur, usually can cause the electroforming failure.For getting rid of this bubble, adopt two kinds of methods in the production: a kind of is to add the wetting agent method.It is to reduce interfacial tension between electrode and solution, reduces the moisten contact angle of bubble, thereby increases the possibility that the gas steam bubble breaks away from electrode surface.This method is that wetting agent consumption needs soon often to replenish and adjusts, easy care not, and can produce detrimentally affect to cast layer.Another kind is the cathode surface method of washing away, and this method is undesirable for complex-shaped core or big core effect.
The object of the present invention is to provide and a kind ofly can get rid of the delay bubble in time, improve cast layer quality and cast layer speed, and be not subjected to the core shape, the size restriction, the vacuum bubble-obviating method for electric casting that is easy to safeguard.
It is that the electroforming work box is sealed that vacuum of the present invention is got rid of bubble method, after the energising electroforming, take out air in the electroforming work box gradually with vacuum pump, make and produce negative pressure in the case, make the micro-bubble volume that is trapped on the cathode surface become big rapidly, it is big that suffered buoyancy becomes, thereby break away from cathode surface, emerges.Simultaneously, periodically open and close the air inlet magnetic valve again, utilize the case inside and outside differential pressure that air is introduced in the solution in the electroforming work nest, make solution produce strenuous exercise, the anticathode surface is stirred and is washed away, and removes the bubble effect with reinforced platoon, reduce, eliminate concentration polarization, improve and allow working current, quickening metal deposition speed, assurance cast layer quality.
This mode of operation without any need for additive, does not change solution compolision, is easy to safeguard, easily is automated, and it is timely to get rid of bubble, and thoroughly, electroforming velocity is fast, and cast layer quality is good, and not limit by the core shape.
Accompanying drawing 1 is a vacuum bubble-obviating method for electric casting schematic diagram of the present invention.It is by electrolytic solution case (1), cell liquor pump (2), and liquid inlet electromagnetic valve (3) returns liquid electromagnetic valve (4), inlet pipe (5), electroforming work nest (6), seal operation case (7), vacuum pump (8) and air inlet magnetic valve (9) are formed.Electroforming work nest (6) is arranged in the seal operation case (7), and the inlet pipe (5) that is covered with aperture by the garden of air inlet magnetic valve (9) control on week places in the electroforming work nest (6) near the place, bottom.
Its basic functional principle and process are after the energising electroforming, to extract the interior air of seal operation case (7) gradually out with vacuum pump (8), make to occur negative pressure in the case, make the micro-bubble volume that is trapped on the cathode surface become big rapidly, suffered buoyancy increases, thereby the disengaging cathode surface emerges.After occurring enough negative pressure in the work box to be sealed (7) and keeping for some time, open air inlet magnetic valve (9), utilize the case inside and outside differential pressure, by inlet pipe (5) air is introduced rapidly in the solution of electroforming work nest (6), made solution produce strenuous exercise, the anticathode surface is stirred, is washed away, further reinforced platoon removes the effect of bubble, reduce, eliminate the concentration polarization of solution simultaneously, improve electroforming velocity, guarantee the electroforming quality.When treating that vacuum is close to zero, start cell liquor pump (2), and open liquid inlet electromagnetic valve (3) simultaneously and return liquid electromagnetic valve (4), change solution.Afterwards, restarting vacuum pump bleeds.Therefrom again and again, till obtaining the adequate thickness cast layer.
Claims (2)
1, a kind of vacuum bubble-obviating method for electric casting, it is characterized in that the electroforming work box is sealed, after the energising electroforming, extract air in the electroforming work box gradually out with vacuum pump, make and produce negative pressure in the case, utilize simultaneously the case inside and outside differential pressure again, periodically air is introduced in the solution in the electroforming work nest by inlet pipe.
2, a kind of vacuum bubble-obviating method for electric casting comprises electrolytic solution case (1), cell liquor pump (2), liquid inlet electromagnetic valve (3), return liquid electromagnetic valve (4), electroforming work nest (6), it is characterized in that also comprising inlet pipe (5), seal operation case (7), vacuum pump (8) and air inlet magnetic valve (9) are formed, electroforming work nest (6) is arranged in the seal operation case (7), and the inlet pipe (5) that is covered with aperture by the garden of air inlet magnetic valve (9) control on week places in the electroforming work nest (6) near the place, bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108101A CN1038773C (en) | 1991-07-21 | 1991-07-21 | Vacuum bubble-obviating method for electric casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91108101A CN1038773C (en) | 1991-07-21 | 1991-07-21 | Vacuum bubble-obviating method for electric casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067932A true CN1067932A (en) | 1993-01-13 |
| CN1038773C CN1038773C (en) | 1998-06-17 |
Family
ID=4909025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91108101A Expired - Fee Related CN1038773C (en) | 1991-07-21 | 1991-07-21 | Vacuum bubble-obviating method for electric casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038773C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412235C (en) * | 2004-10-25 | 2008-08-20 | 南京航空航天大学 | Precise electrotyping shaping technology and device by cathode motion prinding method |
| CN100510196C (en) * | 2006-03-29 | 2009-07-08 | 南京航空航天大学 | Revolving parts electroforming process and device thereof |
| CN101871108A (en) * | 2010-06-11 | 2010-10-27 | 河南理工大学 | Electrolyte vacuum boiling type high speed electro-deposition method and device thereof |
| CN103276414A (en) * | 2013-06-08 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming apparatus for high open porosity micro orifice plate |
| CN103276413A (en) * | 2013-06-08 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming apparatus for large aspect ratio microgroove screen plate |
| CN103276417A (en) * | 2013-05-31 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming device for superfine pore plate |
| CN107119302A (en) * | 2017-05-15 | 2017-09-01 | 西华大学 | The method for eliminating anodic oxidation workpiece surface bubble |
| CN109664019A (en) * | 2019-02-18 | 2019-04-23 | 李建 | A kind of laser welding apparatus preventing gas hole defect |
| CN109722682A (en) * | 2019-01-29 | 2019-05-07 | 南京航空航天大学 | High speed fliud flushing precise electrotyping device and method under negative pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019515B (en) * | 1988-03-12 | 1992-12-16 | 汤耀荣 | Electrotyping of bronze statue |
-
1991
- 1991-07-21 CN CN91108101A patent/CN1038773C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412235C (en) * | 2004-10-25 | 2008-08-20 | 南京航空航天大学 | Precise electrotyping shaping technology and device by cathode motion prinding method |
| CN100510196C (en) * | 2006-03-29 | 2009-07-08 | 南京航空航天大学 | Revolving parts electroforming process and device thereof |
| CN101871108A (en) * | 2010-06-11 | 2010-10-27 | 河南理工大学 | Electrolyte vacuum boiling type high speed electro-deposition method and device thereof |
| CN103276417A (en) * | 2013-05-31 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming device for superfine pore plate |
| CN103276414A (en) * | 2013-06-08 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming apparatus for high open porosity micro orifice plate |
| CN103276413A (en) * | 2013-06-08 | 2013-09-04 | 苏州市金翔钛设备有限公司 | Electroforming apparatus for large aspect ratio microgroove screen plate |
| CN107119302A (en) * | 2017-05-15 | 2017-09-01 | 西华大学 | The method for eliminating anodic oxidation workpiece surface bubble |
| CN109722682A (en) * | 2019-01-29 | 2019-05-07 | 南京航空航天大学 | High speed fliud flushing precise electrotyping device and method under negative pressure |
| CN109664019A (en) * | 2019-02-18 | 2019-04-23 | 李建 | A kind of laser welding apparatus preventing gas hole defect |
| CN109664019B (en) * | 2019-02-18 | 2021-02-26 | 浙江中剑科技股份有限公司 | Prevent laser welding equipment of gas pocket defect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038773C (en) | 1998-06-17 |
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