CN107999907B - The profiled holes electrolytic machining device and method of active suppression dispersion corrosion - Google Patents

The profiled holes electrolytic machining device and method of active suppression dispersion corrosion Download PDF

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Publication number
CN107999907B
CN107999907B CN201711262244.7A CN201711262244A CN107999907B CN 107999907 B CN107999907 B CN 107999907B CN 201711262244 A CN201711262244 A CN 201711262244A CN 107999907 B CN107999907 B CN 107999907B
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China
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anode
cathode
housing
profiled holes
dispersion corrosion
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CN201711262244.7A
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CN107999907A (en
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岳磊
梁涛
肖俊
吴小燕
廖鑫
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AECC South Industry Co Ltd
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AECC South Industry Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H3/00Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H9/00Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/14Making holes

Abstract

The invention discloses a kind of profiled holes electrolytic machining device of active suppression dispersion corrosion and methods.The profiled holes electrolytic machining device of active suppression dispersion corrosion, rotary drive mechanism including being used to constitute the fixed support of shell intracoelomic cavity axis for retaining element and composition to the outer housing of the closing inner chamber electrolytic environments of part Electrolyzed Processing and on outer housing central axes and through outer housing, outer housing is equipped with the processing anode and processing cathode that Electrolyzed Processing is carried out for the part in external housing cavity, outer housing is in the type hole entrance of part profiled holes, the type hole of part profiled holes exports, in the non-processing side wall of part at least one at position be equipped with for combing stray electric field by low pressure controllable electric field in part electrochemical machining process to inhibit the dispersion corrosion of dispersion corrosion to inhibit unit.It can significantly improve this drawback of the dispersion corrosion of Electrolyzed Processing generation, for pushing application of the Electrolyzed Processing in aero-engine field that there is great significance.

Description

The profiled holes electrolytic machining device and method of active suppression dispersion corrosion
Technical field
The present invention relates to aircraft engine parts technical field of electrolysis processing, particularly, it is spuious to be related to a kind of active suppression The profiled holes electrolytic machining device of corrosion.Moreover, it relates to a kind of abnormal shape including above-mentioned active suppression dispersion corrosion The special-shaped pore electrolytic machining method of the active suppression dispersion corrosion of hole electrolytic machining device.
Background technique
Electrolyzed Processing be realized using the principle of electrochemical metal anodic solution work pieces process it is molding a kind of extraordinary plus Work method, relative to other processing methods, Electrolyzed Processing has the following characteristics that 1, theoretically tool cathode is lossless, Ke Yiwu Limit time application;2, high in machining efficiency;3, machined surface quality;4, the range of work is wide, unrelated with material hardness, as long as conductive Material can use Electrolyzed Processing.
But the defective workmanships such as dispersion corrosion limit the further development of electrolysis process.Dispersion corrosion is machined position Or do not need working position and the corrosion of material occur, such as when Electrolyzed Processing irregularly-shaped hole, the inlet of type hole, exit with And side wall often will appear dispersion corrosion, causes inlet and the cross sectional shape of exit type hole to change, seriously affects The form accuracy of type hole, and side wall is corroded, and leads to part rejection.
Summary of the invention
It is existing to solve the present invention provides a kind of profiled holes electrolytic machining device of active suppression dispersion corrosion and method In aircraft engine parts electrochemical machining process, it is easy to cause type hole entrance, outlet and the feature side-wall of part by spuious corruption The technical issues of losing and shape caused to change.
According to an aspect of the present invention, a kind of profiled holes electrolytic machining device of active suppression dispersion corrosion is provided, is wrapped It includes for retaining element and constitutes to the outer housing of the closing inner chamber electrolytic environments of part Electrolyzed Processing and in outer housing It is used to constitute the rotary drive mechanism of the fixed support of shell intracoelomic cavity axis on axis and through outer housing, outer housing, which is equipped with, to be used Part in external housing cavity carries out the processing anode of Electrolyzed Processing and processing cathode, outer housing are in part profiled holes Type hole entrance, part profiled holes type hole outlet, part non-processing side wall at least one at position be equipped with for part electricity Stray electric field is combed to inhibit the dispersion corrosion of dispersion corrosion to inhibit unit by low pressure controllable electric field in solution process.
Further, it includes auxiliary low pressure DC power supply that dispersion corrosion, which inhibits unit, using titanium alloy sheet and auxiliary low pressure The anode electrical connection of DC power supply is used as impressed current anode, is electrically connected with the cathode of auxiliary low pressure DC power supply as auxiliary using part Help cathode;There are spacing between titanium alloy sheet and part, spacing is 0.8mm~1.2mm.
Further, titanium alloy sheet uses TC4 titanium alloy, with a thickness of 3mm~5mm;The voltage of auxiliary low pressure DC power supply For 2V~4V.
Further, impressed current anode includes the anode conducting spiral shell being fastened on titanium alloy sheet by anode fastener Column, the anode terminal being connected on anode conducting stud and for anode terminal to be electrically connected to auxiliary low pressure direct current The anode conducting line of the anode in source;Anode conducting stud is directly connected to anode terminal or anode conducting stud and anode It is connected between binding post by conductive plate.
Further, impressed current anode include be fixed on outer housing and towards titanium alloy sheet lay anode conducting column, even Connect the anode terminal on anode conducting column and the sun for anode terminal to be electrically connected to auxiliary low pressure DC power supply The anode conducting line of pole;The anode for forcing anode conducting column to be detached from titanium alloy sheet is equipped between anode conducting column and outer housing Holddown spring and for overcoming the elastic force of anode holddown spring to control the anode that anode conducting column is contacted with titanium alloy sheet Clamp nut.
Further, auxiliary cathode include be fixed on outer housing and towards part lay cathode conductive column, be connected to Cathode terminal on cathode conductive column and the cathode for cathode terminal to be electrically connected to auxiliary low pressure DC power supply Cathodic conductive wire;The cathode holddown spring for forcing cathode conductive column to be detached from part is equipped between cathode conductive column and outer housing And the cathode clamp nut of cathode conductive column and feature contacts is controlled for overcoming the elastic force of cathode holddown spring.
Further, the connecting groove for powering on and protecting internal conductive track, processing are equipped in shell intracoelomic cavity Anode, processing cathode and dispersion corrosion inhibit the conductive track connection of unit and/or are laid in connecting groove.
Further, outer housing intracavity bottom is equipped with for being bonded the conducting block contacted, part with the conducting surface of part By being fixed between rotary drive mechanism and outer housing for the clamp body of radially secure part, part passes through for along axis To retaining element pressing plate gland in part top;Rotary drive mechanism bottom is equipped with the machine for connecting with electrolytic machine tool It bed connecting component, the rotary driving part that is fixed in lathe connecting component and is fixed on rotary driving part for inputting Or the central row liquid pipe axis of discharge electrolyte.
Further, outer housing include with the cabinet of upper opening, gland on cabinet upper opening cover board and Mounting plate for bottom of box installation assembly;It is equipped between cover board and cabinet and/or between cabinet and mounting plate for connecting The sealing element of position sealing.
According to another aspect of the present invention, a kind of profiled holes Electrolyzed Processing side of active suppression dispersion corrosion is additionally provided Method, under part Electrolyzed Processing environment, respectively the type hole exit of the type hole inlet of part profiled holes, part profiled holes with And feature side-wall places the higher titanium alloy sheet of decomposition voltage respectively;Application one is auxiliary between titanium alloy sheet and processing part Anodic protection circuit is helped, using titanium alloy sheet as anode, the part processed is cathode;While part Electrolyzed Processing, zero Type hole exit anode, the fixture of part cathode and the type hole inlet anode of part profiled holes, part cathode and part profiled holes The current-carrying part anode and feature side-wall cathode of body form controllable electric field, comb the type hole inlet of part respectively, type hole goes out Mouthful at and side-walls stray electric field, improve field distribution, the dispersion corrosion of active suppression part, to improve part type hole The form accuracy of inlet, type hole exit and side wall.
The invention has the following advantages:
The profiled holes electrolytic machining device of active suppression dispersion corrosion of the present invention, part profiled holes type hole inlet, The higher titanium alloy sheet of decomposition voltage is arranged in type hole opening and these positions for being easy to produce dispersion corrosion of feature side-wall, Apply auxiliary low pressure DC voltage between titanium alloy sheet and processing part, using titanium alloy sheet as anode, the part processed is Cathode, in cathode and part type hole inlet, cathode and part type hole exit, part positioning fixture current-carrying part and part side Wall forms controllable electric field, and the stray electric field at combing part type hole inlet, type hole exit and feature side-wall improves electricity Field distribution, the dispersion corrosion of active suppression part, thus improve type hole inlet, type hole exit, feature side-wall shape essence Degree.The present invention applies an impressed current anode protection circuit, on the basis of traditional electrolyte processing unit (plant) with the higher gold of decomposition voltage Belong to and be used as impressed current anode, parts to be processed effectively improves the stray electric field of Electrolyzed Processing as cathode, significantly suppresses spuious Corrosion, improves the precision of Electrolyzed Processing.By means of the invention it is possible to significantly improve this disadvantage of the dispersion corrosion of Electrolyzed Processing generation End, for pushing application of the Electrolyzed Processing in aero-engine field that there is great significance.Meanwhile active suppression of the present invention is spuious The profiled holes electrolytic machining device of corrosion almost can be generalized to all precision ECM manufacture fields, have extensive promotion price Value.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention. Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the longitudinal profile of the profiled holes electrolytic machining device of the active suppression dispersion corrosion of the preferred embodiment of the present invention Structural schematic diagram;
Fig. 2 is the horizontal section of the profiled holes electrolytic machining device of the active suppression dispersion corrosion of the preferred embodiment of the present invention Structural schematic diagram.
Marginal data:
1, outer housing;101, cabinet;102, cover board;103, mounting plate;104, sealing element;2, rotary drive mechanism;201, Lathe connecting component;202, rotary driving part;203, central row liquid pipe axis;3, anode is processed;4, cathode is processed;5, spuious corruption Erosion inhibits unit;501, auxiliary low pressure DC power supply;502, titanium alloy sheet;503, anode fastener;504, anode conducting stud; 505, anode terminal;506, anode conducting line;507, anode conducting column;508, anode holddown spring;509, anode compresses spiral shell It is female;510, conductive plate;511, cathode conductive column;512, cathode terminal;513, cathodic conductive wire;514, cathode holddown spring; 515, cathode clamp nut;6, part;7, connecting groove;8, conducting block;9, clamp body;10, pressing plate.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and The multitude of different ways of covering is implemented.
Fig. 1 is the longitudinal profile of the profiled holes electrolytic machining device of the active suppression dispersion corrosion of the preferred embodiment of the present invention Structural schematic diagram;Fig. 2 is the transverse direction of the profiled holes electrolytic machining device of the active suppression dispersion corrosion of the preferred embodiment of the present invention The schematic diagram of the section structure.As depicted in figs. 1 and 2, the profiled holes electrolytic machining device of the active suppression dispersion corrosion of the present embodiment, Including to the outer housing 1 of the closing inner chamber electrolytic environments of 6 Electrolyzed Processing of part and being in shell for retaining element 6 and composition It is used to constitute the rotary drive mechanism 2 of the fixed support of 1 inner cavity axis of outer housing, outer housing on 1 central axes of body and through outer housing 1 1 is equipped with the processing anode 3 for carrying out Electrolyzed Processing to the part 6 in 1 inner cavity of outer housing and processes cathode 4, at outer housing 1 It is exported in the type hole entrance of 6 profiled holes of part, the type hole of 6 profiled holes of part, position at least one in the non-processing side wall of part 6 It installs for combing stray electric field by low pressure controllable electric field in 6 electrochemical machining process of part to inhibit the spuious of dispersion corrosion Corrosion inhibits unit 5.The profiled holes electrolytic machining device of active suppression dispersion corrosion of the present invention, in the type hole of 6 profiled holes of part The higher titanium of decomposition voltage is arranged in these positions for being easy to produce dispersion corrosion of inlet, type hole opening and 6 side wall of part Alloy sheets 502 apply auxiliary low pressure DC voltage between titanium alloy sheet 502 and processing part 6, are with titanium alloy sheet 502 Anode, the part 6 processed is cathode, in 6 type hole inlet of cathode and part, 6 type hole exit of cathode and part, part 6 Positioning fixture current-carrying part and 6 side wall of part form controllable electric field, combing 6 type hole inlet of part, type hole exit with The stray electric field of 6 side-walls of part improves field distribution, the dispersion corrosion of active suppression part 6, to improve type hole entrance Place, type hole exit, 6 side wall of part form accuracy.The present invention applies an auxiliary on the basis of traditional electrolyte processing unit (plant) Anodic protection circuit, using the higher metal of decomposition voltage as impressed current anode, parts to be processed 6 is used as cathode, effectively improves The stray electric field of Electrolyzed Processing, significantly suppresses dispersion corrosion, improves the precision of Electrolyzed Processing.By means of the invention it is possible to aobvious Writing improves this drawback of the dispersion corrosion of Electrolyzed Processing generation, for pushing application of the Electrolyzed Processing in aero-engine field to have There is great significance.Meanwhile the profiled holes electrolytic machining device of active suppression dispersion corrosion of the present invention almost can be generalized to it is all Precision ECM manufacture field has extensive promotional value.
As depicted in figs. 1 and 2, in the present embodiment, it includes auxiliary low pressure DC power supply 501 that dispersion corrosion, which inhibits unit 5,.It adopts Titanium alloy sheet 502 is used to be electrically connected with the anode of auxiliary low pressure DC power supply 501 as impressed current anode.It is low with auxiliary using part 6 The cathode electrical connection of DC power supply 501 is pressed to be used as auxiliary cathode.There are spacing between titanium alloy sheet 502 and part 6.Spacing is 0.8mm~1.2mm.
As depicted in figs. 1 and 2, in the present embodiment, titanium alloy sheet 502 uses TC4 titanium alloy.With a thickness of 3mm~5mm;It is auxiliary The voltage for helping low-voltage dc power supply 501 is 2V~4V.
As depicted in figs. 1 and 2, in the present embodiment, impressed current anode includes that titanium conjunction is fastened on by anode fastener 503 Anode conducting stud 504 in golden plate 502, the anode terminal 505 being connected on anode conducting stud 504 and for will be positive Pole binding post 505 is electrically connected to the anode conducting line 506 of the anode of auxiliary low pressure DC power supply 501.Optionally, anode conducting spiral shell Column 504 is directly connected to anode terminal 505.Optionally, by leading between anode conducting stud 504 and anode terminal 505 Battery plate 510 connects.
As shown in Fig. 2, impressed current anode includes being fixed on outer housing 1 and laying towards titanium alloy sheet 502 in the present embodiment Anode conducting column 507, the anode terminal 505 that is connected on anode conducting column 507 and for by 505 electricity of anode terminal It is connected to the anode conducting line 506 of the anode of auxiliary low pressure DC power supply 501.It is equipped between anode conducting column 507 and outer housing 1 For forcing anode conducting column 507 to be detached from the anode holddown spring 508 of titanium alloy sheet 502 and for overcoming anode holddown spring 508 elastic force is to control the anode clamp nut 509 that anode conducting column 507 is contacted with titanium alloy sheet 502.Anode can be passed through The cooperation of holddown spring 508 and anode clamp nut 509 can be connected to anode circuit at any time or disconnect anode circuit, side Just auxiliary circuit on-off line operation.
As shown in Fig. 2, auxiliary cathode includes the cathode for being fixed on outer housing 1 and laying towards part 6 in the present embodiment Conductive column 511, the cathode terminal 512 being connected on cathode conductive column 511 and for cathode terminal 512 to be electrically connected to The cathodic conductive wire 513 of the cathode of auxiliary low pressure DC power supply 501.It is equipped between cathode conductive column 511 and outer housing 1 for compeling Cathode conductive column 511 is set to be detached from the cathode holddown spring 514 of part 6 and the elastic force for overcoming cathode holddown spring 514 To control the cathode clamp nut 515 that cathode conductive column 511 is contacted with part 6.Cathode holddown spring 514 and cathode can be passed through The cooperation of clamp nut 515 can be connected to cathode circuit at any time or disconnect cathode circuit, auxiliary circuit on-off is facilitated to grasp Make.
As shown in Figure 1, being equipped in 1 inner cavity of outer housing for powering on and protecting internal conductive track in the present embodiment Connecting groove 7.Processing anode 3, processing cathode 4 and dispersion corrosion inhibit the conductive track connection of unit 5 and/or are laid in connect In wire casing 7.
As shown in Figure 1,1 intracavity bottom of outer housing is equipped with for contacting with the fitting of the conducting surface of part 6 in the present embodiment Conducting block 8.Part 6 by for the clamp body 9 of radially secure part 6 be fixed on rotary drive mechanism 2 and outer housing 1 it Between.Part 6 is by 10 gland of pressing plate for being axially fixed part 6 in 6 top of part.2 bottom of rotary drive mechanism is equipped with Lathe connecting component 201 for being connect with electrolytic machine tool, the rotary driving part being fixed in lathe connecting component 201 It 202 and is fixed on rotary driving part 202 for inputting or discharging the central row liquid pipe axis 203 of electrolyte.
As shown in Figure 1, outer housing 1 includes the cabinet 101 for having upper opening, gland on cabinet 101 in the present embodiment Cover board 102 in portion's opening and the mounting plate 103 for the installation assembly of 101 bottom of cabinet.Between cover board 102 and cabinet 101 And/or the sealing element 104 for connecting portion sealing is equipped between cabinet 101 and mounting plate 103.
The special-shaped pore electrolytic machining method of the active suppression dispersion corrosion of the present embodiment, under 6 Electrolyzed Processing environment of part, It places and divides respectively in the type hole inlet of 6 profiled holes of part, the type hole exit of 6 profiled holes of part and 6 side wall of part respectively Solve the higher titanium alloy sheet 502 of voltage;Apply an impressed current anode protection electricity between titanium alloy sheet 502 and processing part 6 Road is anode with titanium alloy sheet 502, and the part 6 processed is cathode;While 6 Electrolyzed Processing of part, in 6 cathode of part With type hole exit anode, the clamp body 9 of the type hole inlet anodes of 6 profiled holes of part, 6 cathode of part and 6 profiled holes of part Current-carrying part anode and 6 side wall cathode of part form controllable electric field, comb the type hole inlet of part 6 respectively, type hole goes out Mouthful at and side-walls stray electric field, improve field distribution, the dispersion corrosion of active suppression part 6, to improve 6 type of part The form accuracy of hole inlet, type hole exit and side wall.
The profiled holes electrolytic machining device of active suppression dispersion corrosion passes through lathe connecting component 201 and electrolytic machine tool It is connected, drives part 6 and associated components to rotate by rotary driving part 202.Part 6 is first clamped by clamp body 9, then is led to Pressing plate 10 and clamp nut is crossed to be in close contact the conducting surface of part 6 and conducting block 8.Part 6 and the installation of above-mentioned clamping component In cabinet 101, it is installed rear holddown plate 102, and equipped with sealing ring (sealing element between cover board 102 and cabinet 101 104) to guarantee leakproofness, thus part 6 is fixed in the fixture being fully sealed.
Anode protection device in the profiled holes electrolytic machining device of active suppression dispersion corrosion is made of three parts.
First part: the titanium alloy sheet 502 that multiple thickness 1mm are equipped on clamp body 9 (preferably, installs two titaniums to close Golden plate 502).First piece of titanium alloy sheet 502 is 0.8mm~1.2mm at a distance from 6 axial direction of part, with 6 side wall of part, it It is connected directly by anode conducting stud 504 and anode conducting plate 510, there is anode terminal 505 on anode conducting plate 510, and Connecting groove 7 is pooled to by an anode conducting line 506.Second piece of titanium alloy sheet 502 passes through (the anode fastening of anode fastening screw Part 503) it is connected with anode conducting stud 504, same jointed anode binding post 505 on anode conducting stud 504.First piece of titanium The anode terminal 505 of the anode terminal 505 of alloy sheets 502 and second piece of titanium alloy sheet 502 passes through an anode conducting line 506 are connected;In this way, two pieces of titanium alloy sheets 502 are just all pooled on connecting groove 7 by being specifically conductively connected.When processing, Connecting groove 7 connects the anode of accessory power supply (auxiliary low pressure DC power supply 501, voltage 2V-4V).And accessory power supply (auxiliary low pressure DC power supply 501) cathode be connected with part 6.
Second part: it is arranged one above the type hole air inlet position apart from 6 profiled holes of part at 0.8mm~1.2mm Titanium alloy sheet 502, titanium alloy sheet 502 are connected with anode conducting column 507, and pass through anode clamp nut 509 and anode pressure Under the action of tight spring 508, titanium alloy sheet 502 can with anode conducting column 507 is closely coupled connects.Have on anode conducting column 507 Anode terminal 505 can be connected by anode conducting line 506 with the anode of accessory power supply (auxiliary low pressure DC power supply 501) It connects.Titanium alloy sheet 502 is thereby realized to be connected with the anode of accessory power supply (auxiliary low pressure DC power supply 501).
Part III: installing a cathode conductive column 511 on cabinet 101, compresses in cathode holddown spring 514 and cathode Cathode conductive column 511 and part 6 can contact well under the action of nut 515, then make itself and auxiliary by cathode terminal 512 The cathode of power supply (auxiliary low pressure DC power supply 501) is connected.When part 6 is processed, cathode clamp nut 515 is tightened, cathode is led Electric column 511 and part 6 connect, to guarantee that part 6 and the cathode of accessory power supply (auxiliary low pressure DC power supply 501) connect.
By above step, the titanium alloy sheets 502 of 6 side-walls of part, 6 type hole inlet of part titanium alloy sheet 502 with And the titanium alloy sheet 502 in 6 type hole exit of part is connected with the anode of accessory power supply (auxiliary low pressure DC power supply 501) respectively It connects, part 6 is connected with the cathode of accessory power supply (auxiliary low pressure DC power supply 501).Accessory power supply (auxiliary low pressure DC power supply 501) electric field brought by is just with machining voltage bring electric field on the contrary, the outlet of 6 type hole of part, type hole entrance can be effectively improved The stray electric field of 6 side wall of place and part inhibits dispersion corrosion, improves machining accuracy.And the decomposition voltage of titanium alloy sheet 502 Be 3-4V and boost voltage voltage it is suitable, titanium alloy sheet when connecting accessory power supply (auxiliary low pressure DC power supply 501) circuit 502 meltage is just considerably less, improves the service life of titanium alloy sheet 502, this, which has just reached, can inhibit dispersion corrosion again The double effects of impressed current anode service life can be improved.
The profiled holes electrolytic machining device of active suppression dispersion corrosion through the invention, in traditional electrolyte processing unit (plant), Apply an impressed current anode protection circuit, using the higher metal of decomposition voltage as impressed current anode, parts to be processed 6 is as yin Pole effectively improves the stray electric field of Electrolyzed Processing, significantly suppresses dispersion corrosion, improves the precision of Electrolyzed Processing.Pass through The present invention, the drawbacks of can significantly improve Electrolyzed Processing: dispersion corrosion, for pushing Electrolyzed Processing in aero-engine field Using with great significance.Meanwhile method provided by the invention almost can be generalized to all precision ECM manufacture fields, have Extensive promotional value.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (9)

1. a kind of profiled holes electrolytic machining device of active suppression dispersion corrosion, including for retaining element (6) and constitute to institute It states the outer housing (1) of the closing inner chamber electrolytic environments of part (6) Electrolyzed Processing and is on the outer housing (1) central axes simultaneously It is used to constitute the rotary drive mechanism (2) of the fixed support of the outer housing (1) inner cavity axis through the outer housing (1),
The outer housing (1) is equipped with for carrying out adding for Electrolyzed Processing to the part (6) in the outer housing (1) inner cavity Work anode (3) and processing cathode (4),
It is characterized in that,
The outer housing (1) is in the type hole entrance of the part (6) profiled holes, the type hole of the part (6) profiled holes exports, In the non-processing side wall of the part (6) at least one at position be equipped with for passing through in the part (6) electrochemical machining process Low pressure controllable electric field combs stray electric field to inhibit the dispersion corrosion of dispersion corrosion to inhibit unit (5);
It includes auxiliary low pressure DC power supply (501) that the dispersion corrosion, which inhibits unit (5), using titanium alloy sheet (502) with it is described The anode electrical connection of auxiliary low pressure DC power supply (501) is used as impressed current anode, straight using the part (6) and the auxiliary low pressure The cathode electrical connection in galvanic electricity source (501) is used as auxiliary cathode;Between the titanium alloy sheet (502) and the part (6) there are Away from spacing is 0.8mm~1.2mm.
2. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to claim 1, which is characterized in that
The titanium alloy sheet (502) uses TC4 titanium alloy, with a thickness of 3mm~5mm;
The voltage of the auxiliary low pressure DC power supply (501) is 2V~4V.
3. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to claim 1, which is characterized in that
Impressed current anode includes the anode conducting spiral shell being fastened on the titanium alloy sheet (502) by anode fastener (503) Column (504), the anode terminal (505) being connected on the anode conducting stud (504) and for by the anode connection Column (505) is electrically connected to the anode conducting line (506) of the anode of the auxiliary low pressure DC power supply (501);
The anode conducting stud (504) is directly connected to the anode terminal (505) or the anode conducting stud (504) it is connect between the anode terminal (505) by conductive plate (510).
4. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to claim 1, which is characterized in that
Impressed current anode includes the anode conducting column for being fixed on the outer housing (1) and laying towards the titanium alloy sheet (502) (507), the anode terminal (505) that is connected on the anode conducting column (507) and for by the anode terminal (505) it is electrically connected to the anode conducting line (506) of the anode of the auxiliary low pressure DC power supply (501);
It is equipped between the anode conducting column (507) and the outer housing (1) for forcing the anode conducting column (507) to be detached from The anode holddown spring (508) of the titanium alloy sheet (502) and elastic force for overcoming the anode holddown spring (508) To control the anode clamp nut (509) that the anode conducting column (507) contacts with the titanium alloy sheet (502).
5. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to claim 1, which is characterized in that
Auxiliary cathode include be fixed on the outer housing (1) and lay towards the part (6) cathode conductive column (511), The cathode terminal (512) that is connected on the cathode conductive column (511) and for the cathode terminal (512) to be electrically connected It is connected to the cathodic conductive wire (513) of the cathode of the auxiliary low pressure DC power supply (501);
It is equipped between the cathode conductive column (511) and the outer housing (1) for forcing the cathode conductive column (511) to be detached from The cathode holddown spring (514) of the part (6) and for overcoming the elastic force of the cathode holddown spring (514) to control The cathode clamp nut (515) that the cathode conductive column (511) contacts with the part (6).
6. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to any one of claim 1 to 5, special Sign is,
The connecting groove (7) for powering on and protecting internal conductive track is equipped in outer housing (1) inner cavity,
Processing anode (3), processing cathode (4) and the dispersion corrosion inhibit the conductive track connection of unit (5) And/or it is laid in connecting groove (7).
7. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to any one of claim 1 to 5, special Sign is,
Outer housing (1) intracavity bottom is equipped with for being bonded the conducting block (8) contacted with the conducting surface of the part (6),
The part (6) is fixed on the rotary drive mechanism by the clamp body (9) for the radially secure part (6) (2) between the outer housing (1),
The part (6) is by pressing plate (10) gland for being axially fixed the part (6) in the part (6) top;
Rotary drive mechanism (2) bottom is equipped with lathe connecting component (201) for connecting with electrolytic machine tool, affixed In the rotary driving part (202) on the lathe connecting component (201) and it is fixed on the rotary driving part (202) For inputting or discharging the central row liquid pipe axis (203) of electrolyte.
8. the profiled holes electrolytic machining device of active suppression dispersion corrosion according to any one of claim 1 to 5, special Sign is,
The outer housing (1) includes the cabinet (101) for having upper opening, gland on the cabinet (101) upper opening Cover board (102) and the mounting plate (103) assembled for the installation of the cabinet (101) bottom;
It is set between the cover board (102) and the cabinet (101) and/or between the cabinet (101) and the mounting plate (103) There is the sealing element (104) for connecting portion sealing.
9. a kind of special-shaped pore electrolytic machining method of active suppression dispersion corrosion, which is characterized in that
It is different in the type hole inlet of the part (6) profiled holes, the part (6) respectively under part (6) Electrolyzed Processing environment The type hole exit of type hole and the part (6) side wall place the higher titanium alloy sheet of decomposition voltage (502) respectively;
In the titanium alloy sheet (502) and one impressed current anode protection circuit of application between the part (6) is processed, with described Titanium alloy sheet (502) is anode, and the part (6) processed is cathode;
While the part (6) Electrolyzed Processing, enter in the part (6) cathode and the type hole of the part (6) profiled holes The conductive part of anode, the type hole exit anode of the part (6) cathode and the part (6) profiled holes, clamp body (9) at mouthful Divide anode and the part (6) side wall cathode to form controllable electric field, combs type hole inlet, the type of the part (6) respectively At hole exits and the stray electric field of side-walls, improve field distribution, the dispersion corrosion of part (6) described in active suppression, thus Improve the form accuracy of the part (6) type hole inlet, type hole exit and side wall.
CN201711262244.7A 2017-12-04 2017-12-04 The profiled holes electrolytic machining device and method of active suppression dispersion corrosion Active CN107999907B (en)

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CN107096970A (en) * 2017-06-19 2017-08-29 南京航空航天大学 Gas-insulated protects jacking Electrolyzed Processing cathod system and processing method
CN107322112A (en) * 2017-07-17 2017-11-07 常州工学院 A kind of pulse current matches feed arrangement with vibration

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* Cited by examiner, † Cited by third party
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US3723268A (en) * 1967-12-21 1973-03-27 Prod Eng Res Ass Electrochemical machining
CN102896383A (en) * 2012-10-10 2013-01-30 南京航空航天大学 Electrolytic machining method of difficult-to-cut material, fine-module internal gear and device
CN104384643A (en) * 2014-10-16 2015-03-04 南京航空航天大学 Electrolytic machining method for thin-wall machine case of aero-engine
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