CN105195841B - A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude - Google Patents
A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude Download PDFInfo
- Publication number
- CN105195841B CN105195841B CN201510747707.3A CN201510747707A CN105195841B CN 105195841 B CN105195841 B CN 105195841B CN 201510747707 A CN201510747707 A CN 201510747707A CN 105195841 B CN105195841 B CN 105195841B
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- electrolyte
- pipe electrode
- processing
- electrolyzed processing
- alumina abrasive
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/08—Working media
Abstract
A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude provided by the invention, comprises the following steps：Alumina abrasive is added in the electrolyte that Electrolyzed Processing uses, is properly added dispersant, forms the electrolysis liquid suspensions of alumina abrasive；The pipe electrode that Electrolyzed Processing is used does respective side insulation processing；Electrolyte flows downward in pipe electrode during processing, export from pipe electrode lower end and outwards spray, larger due to being damped after addition alumina abrasive in electrolyte, pipe electrode is damped increase when vibrating, reduce pipe electrode and vibration is caused by electrolyte flow and stiffness by itself deficiency, reduce its amplitude.At the same time, contained alumina abrasive flows through Electrolyzed Processing region with electrolyte in electrolyte, and the alumina abrasive grain in abrasive material is contacted with workpiece surface to be machined, plays abrasive action, the current mark of workpiece surface to be machined is eliminated, improves the roughness and machining accuracy of workpiece surface to be machined.
Description
Technical field
The invention belongs to the technical field of pipe electrode Electrolyzed Processing, particularly relates to a kind of reduction pipe electrode Electrolyzed Processing electrode
The method of amplitude.
Background technology
Pipe electrode Electrolyzed Processing is that one kind carries out electrochemistry ablation using hollow metal pipe as tool cathode to workpiece anode
The technique of processing, is usually used in electrolysis punching, the hole machined of aviation parts is one of its important application field.As the modern times navigate
The progress of empty industrial technology, temperature is continuously improved before aero-turbine, engine thermal end pieces（Such as high-pressure turbine working leaf
Piece, guide vane, combustion chamber etc.）Air film cooling technology is all widely used, every blade there are tens of to hundreds of gaseous film controls
Hole, there is up to tens thousand of such film cooling holes in combustion chamber.These parts are more using high strength steel, titanium alloy, Ni-based
The high intensity such as alloy high hardness material manufactures, and generally between 0.25-1.25mm, space angle is multiple in the aperture of film cooling holes
Miscellaneous, traditional mechanical means can not process these film cooling holes.Therefore, in high strength and high hardness materials for aeroengines
On, how high efficiency processes cooling hole and become current aviation in high quality one of must solve the problems, such as.If make
With conventional machining means, such as electric spark, Laser Processing, there are problems that fuel factor.Pipe electrode Electrolyzed Processing gas mould cooling hole work
Skill is then insensitive to mechanical and physical properties such as workpiece material intensity, hardness, and process is not present without tool loss after processing
Hot recast layer, heat affected area and residual stress, in addition, being molded by disposable group's hole machined, can ensure the base of processing quality
On plinth, manufacture cost is significantly reduced, improves Electrolyzed Processing efficiency, it is non-to hot recast layer and micro-crack that this method is particularly suitable for processing
Often sensitive engine thermal end pieces, such as engine high pressure turbo blade.But pipe electrode Electrolyzed Processing still has some problems limit
Its development and application have been made, has improved the processing quality of Electrolyzed Processing, has been always that Electrolyzed Processing researcher is directed to what is solved
Major issue.In pipe electrode electrochemical machining process, used hollow pipe electrode general diameter is smaller, and rigidity is poor, and its
Hollow structure further weakens its rigidity；In addition, the change of processing gap electrolyte inside flow velocity and electrolyte flow should
The change of power can cause the fluid stress for acting on pipe electrode surface uneven, and gap electrolyte inside vortex there are further
It is degrading the fluid stress distribution on pipe electrode surface.Therefore, the poor hollow pipe electrode of rigidity is changeable, non-uniform Distribution
Irregular vibration often occurs under electrolyte flow stress, its Oscillation Amplitude is difficult to predict, it more difficult in control, seriously
The stability that have impact on Electrolyzed Processing and processing formed precision.
Therefore, a kind of method for effectively reducing pipe electrode Electrolyzed Processing electrode vibration amplitude is found to improve process engineering
Stability be one of current field key core problem, and Field of Aviation Manufacturing pipe electrode Electrolyzed Processing industry development
Objective demand.
The content of the invention
It is an object of the present invention to design a kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude, this method utilizes
The electrolyte for adding abrasive material carries out Electrolyzed Processing, can effectively improve electrolyte damping, reduce pipe electrode in electrochemical machining process
Amplitude, improve the stability and formed precision of electrochemical machining process.
A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude provided by the invention, comprises the following steps：
（One）The alumina abrasive that mass percent is 8%-10% is added in the electrolyte that Electrolyzed Processing uses, granularity is
1000-5000 mesh, is properly added dispersant, forms the electrolysis liquid suspensions of alumina abrasive；
（Two）The pipe electrode that Electrolyzed Processing is used does respective side insulation processing；
（Three）Pipe electrode is installed on the clamping sealing device of electrolytic machine tool, and connects the anode of processing power source,
Workpiece material is fixed on the work piece holder in electrolytic bath, and connects the cathode of processing power source, opens electrolyte circulating pump
Electrolyzed Processing is carried out with processing power source, as shown in Figure 1, electrolyte flows downward in pipe electrode, from pipe electrode lower end during processing
Outlet outwards sprays, and larger due to being damped after addition alumina abrasive in electrolyte, pipe electrode is subject to resistance to increase when vibrating, from
And reduce the amplitude that pipe electrode is caused vibration by electrolyte flow.In the process, alumina abrasive contained in electrolyte with
The ejection of electrolyte flows through Electrolyzed Processing region, and alumina abrasive is directly contacted with the surface to be machined of workpiece, plays and grind
Mill acts on, so that on the premise of passing through electrolyte circulation system and Electrolyzed Processing product is discharged machining area, eliminates
The current mark of workpiece surface to be machined, improves the roughness and machining accuracy of workpiece surface to be machined.
Preferably, the abrasive material is alumina abrasive, and granularity is 1000-5000 mesh.
Preferably, the dispersant is o-benzoic sulfimide sodium.
Preferably, abrasive material mode is added using electrolyte to increase electrolyte damping, reduces pipe electrode amplitude, pass through abrasive material
Workpiece surface to be machined is directly ground in electrolyte flow scour process to improve its surface roughness and processing quality.
Compared with prior art, the invention has the advantages that：
（1）Under regular situation, coagulation phenomenon can occur in the electrolytic solution for abrasive material, influence the filtering work(of electrolyte circulation system
Energy.The alumina abrasive of 1000-5000 mesh is used in this method and adds appropriate dispersant, such as o-benzoic sulfimide
Sodium, abrasive grain is small and suspended dispersed in the electrolytic solution, can realize that the damping of increase electrolyte and grinding work-piece are processed well
The effect on surface is without occurring coagulation.
（2）In conventional electrolysis processing, electrolyte flows in pipe electrode can cause electrode vibration.It is this it is difficult to predict with
The irregular pipe electrode vibration of control easily leads to short circuit even spark discharge and occurs, and causes electrode and work pieces process face to be burnt.
In this method by the way of alumina abrasive is added in the electrolytic solution, the damping of electrolyte is effectively increased, therefore pipe electrode shakes
Increase is damped when dynamic, pipe electrode is reduced and vibration is caused by electrolyte flow and stiffness by itself deficiency, reduce its amplitude.Together
When, contained alumina abrasive flows through Electrolyzed Processing region with electrolyte in electrolyte, and alumina abrasive is processed table with workpiece
Face is contacted, and plays abrasive action, eliminates the current mark of workpiece surface to be machined, improves the coarse of workpiece surface to be machined
Degree and machining accuracy.
Brief description of the drawings
Fig. 1 is pipe electrode electrolytic machining device schematic diagram；
Fig. 2 is pipe electrode Electrolyzed Processing zone concepts schematic diagram.
Embodiment
As shown in Figure 1, 2, it includes：The clamping sealing device 1 of electrolytic machine tool, is responsible for the clamping and electrolysis of pipe electrode
Liquid-tight envelope；Pipe electrode 2 through side punching and insulation processing, upper end connect the clamping sealing device 1 of electrolytic machine tool, and even
Connect the cathode that processing power source anode does Electrolyzed Processing, downward jet electrolytic liquid during processing；Processing power source 3, provide during processing needed for
Direct current；Work piece holder 4, is responsible for the workpiece that is fixedly clamped；Workpiece 5, connection 3 cathode of processing power source do the anode of Electrolyzed Processing；
Electrolytic cell 6, electrolyte processing environment is provided for Electrolyzed Processing；Electrolyte circulating pump 7, for processing when circulating for electrolyte carry
For power；The electrolyte line 8 that the outlet of pipe electrode lower end sprays；Alumina abrasive grain 9 in electrolyte line.
A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude provided by the invention, specifically includes following steps：
（One）The alumina abrasive of 8-10% is added in the electrolyte that Electrolyzed Processing uses, granularity is 1000-5000 mesh,
Dispersant o-benzoic sulfimide sodium is properly added, forms the electrolysis liquid suspensions of alumina abrasive；
（Two）The pipe electrode 2 that Electrolyzed Processing uses is done into respective side insulation processing, 30-100 μm of thickness of insulating layer, pipe electricity
Pole processing end, which is reserved 0.1-0.3mm length thereofs and do not done, insulate to form " processing sword "；
（Three）The pipe electrode 2 finished will be pre-processed on the clamping sealing device 1 of electrolytic machine tool, and connect and add
The anode of work power supply 3 does the cathode of Electrolyzed Processing, and workpiece 5 is fixed on the work piece holder 4 in electrolytic bath 6, is connected at the same time
3 cathode of processing power source does the anode of Electrolyzed Processing, opens electrolyte circulating pump 7 and processing power source 3 carries out Electrolyzed Processing, during processing
As shown in Figure 1, electrolyte flows downward in pipe electrode 2, export from 2 lower end of pipe electrode and outwards spray, due to adding in electrolyte
Increase is damped after adding alumina abrasive, the resistance increase that pipe electrode 2 is subject to when vibrating, so as to reduce pipe electrode 2 by electrolysis liquid stream
The dynamic amplitude for causing vibration.In the process, contained alumina abrasive grain in the electrolyte line 8 that the outlet of pipe electrode lower end sprays
9 granularities are smaller and suspended dispersed in the electrolytic solution, do not interfere with the filtering function of electrolyte circulation system, it is exported with pipe electrode
The electrolyte line 8 of ejection flows through Electrolyzed Processing region, and the alumina abrasive grain 9 in abrasive material is connect with 5 surface to be machined of workpiece
Grinding is touched, abrasive action is played, eliminates the current mark of workpiece surface to be machined, improve the roughness of 5 surface to be machined of workpiece
And machining accuracy.
Above-described is only the implementation example of the present invention, when cannot limit the scope implemented of the present invention successively.It is i.e. every
The equivalent changes and modifications made according to scope of the present invention patent, all should still belong in the range of the claims in the present invention cover.
Claims (2)
1. a kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude, comprises the following steps：
(1) alumina abrasive of mass percent 8%-10% is added in the electrolyte that Electrolyzed Processing uses, granularity is
1000-5000 mesh, is properly added dispersant, forms the electrolysis liquid suspensions of alumina abrasive；
(2) pipe electrode for using Electrolyzed Processing does respective side insulation processing；
(3) pipe electrode is installed on the clamping sealing device of electrolytic machine tool, and connects the anode of processing power source, by work
Part material is fixed on the work piece holder in electrolytic bath, and connects the cathode of processing power source, is opened electrolyte circulating pump and is added
Work power supply carries out Electrolyzed Processing, and electrolyte flows downward in pipe electrode during processing, exports from pipe electrode lower end and outwards sprays, by
In electrolyte add alumina abrasive after damp it is larger, pipe electrode vibrate when be subject to resistance to increase so that reduce pipe electrode by
Electrolyte flow causes the amplitude of vibration, in the process, in electrolyte contained alumina abrasive with electrolyte discharging jet
Through Electrolyzed Processing region, the alumina abrasive grain in abrasive material is directly contacted with the Electrolyzed Processing face of workpiece, plays abrasive action,
Electrolyte damping is increased using electrolyte addition alumina abrasive mode, pipe electrode Oscillation Amplitude is reduced, passes through electrolyte flow
Alumina abrasive is driven directly to be ground workpiece surface to be machined to improve its surface roughness and machining accuracy, so as to smoothly lead to
On the premise of electrolyte circulation system is crossed by Electrolyzed Processing product discharge machining area, the stream of workpiece surface to be machined is eliminated
Trace, improves the roughness and machining accuracy of workpiece surface to be machined.
2. the method as described in claim 1, it is characterised in that：The dispersant is o-benzoic sulfimide sodium.
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| CN201510747707.3A CN105195841B (en) | 2015-11-06 | 2015-11-06 | A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude |
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| CN201510747707.3A CN105195841B (en) | 2015-11-06 | 2015-11-06 | A kind of method for reducing pipe electrode Electrolyzed Processing electrode amplitude |
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| CN105195841B true CN105195841B (en) | 2018-05-08 |
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| CN108581100B (en) * | 2018-05-04 | 2019-08-23 | 山东大学 | Inner passage ultrasonic vibration assists internal combustion electrochemical grinding system and method |
| CN108890052B (en) * | 2018-06-29 | 2020-04-07 | 南京航空航天大学 | Gas injection auxiliary insulation type electrolytic cutting machining method |
| CN111215709A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | Novel electrode composite electric machining device and machining method |
| CN111515480B (en) * | 2020-04-22 | 2021-07-02 | 大连理工大学 | Particle-assisted mask electrolytic machining device and method |
| CN114289805B (en) * | 2022-01-10 | 2022-12-09 | 苏州美东汇成精密部件有限公司 | Electrochemical machining equipment with high workpiece surface smoothness |
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| JPH07108420A (en) * | 1993-10-06 | 1995-04-25 | Yaskawa Electric Corp | Fine perforation machining method |
| CN102398193A (en) * | 2010-09-17 | 2012-04-04 | 香港理工大学 | Grinding auxiliary electrochemical discharge machining tool and method |
| CN102909446A (en) * | 2012-11-01 | 2013-02-06 | 东北林业大学 | Device for removing internally crossed tidy hole burrs by compositing electrolyte and micro-fine grinded powder |
| CN103395008A (en) * | 2013-08-20 | 2013-11-20 | 哈尔滨工业大学 | Abrasive jet machining method under effect of composite energy field |
| CN104107969A (en) * | 2014-06-23 | 2014-10-22 | 太原理工大学 | Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode |
| CN104907650A (en) * | 2015-05-26 | 2015-09-16 | 南京航空航天大学 | Abrasive water jet-electrolysis composite pass making method and device for metal part with thermal barrier coating |
-
2015
- 2015-11-06 CN CN201510747707.3A patent/CN105195841B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07108420A (en) * | 1993-10-06 | 1995-04-25 | Yaskawa Electric Corp | Fine perforation machining method |
| CN102398193A (en) * | 2010-09-17 | 2012-04-04 | 香港理工大学 | Grinding auxiliary electrochemical discharge machining tool and method |
| CN102909446A (en) * | 2012-11-01 | 2013-02-06 | 东北林业大学 | Device for removing internally crossed tidy hole burrs by compositing electrolyte and micro-fine grinded powder |
| CN103395008A (en) * | 2013-08-20 | 2013-11-20 | 哈尔滨工业大学 | Abrasive jet machining method under effect of composite energy field |
| CN104107969A (en) * | 2014-06-23 | 2014-10-22 | 太原理工大学 | Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode |
| CN104907650A (en) * | 2015-05-26 | 2015-09-16 | 南京航空航天大学 | Abrasive water jet-electrolysis composite pass making method and device for metal part with thermal barrier coating |
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