CN103056462B - Designing method of blade molded surface electrolysis negative electrode mould protecting device - Google Patents
Designing method of blade molded surface electrolysis negative electrode mould protecting device Download PDFInfo
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- CN103056462B CN103056462B CN201110324866.4A CN201110324866A CN103056462B CN 103056462 B CN103056462 B CN 103056462B CN 201110324866 A CN201110324866 A CN 201110324866A CN 103056462 B CN103056462 B CN 103056462B
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Abstract
The invention discloses a designing method of a blade molded surface electrolysis negative electrode mould protecting device. A rectifying power supply is arranged on a DJ-3 double-face blade electrolysis machine tool. A high-power resistor is connected in parallel on two silicon controlled rectifying power negative electrode plates. Machine tool resistor disks are selected to be connected in parallel to form the resistor. After the resistor disks are added, electrode potential of an original size is reduced and forms a new potential difference with a positive electrode so as to play a weak electrochemical machining role on a blade. After two faces both reach preset positions, instant starting is implemented, and secondary scouring is conducted on a machined basin back molded surface, and therefore the problem of weak electrolysis on the electrodes is solved. An electrochemistry dissolution phenomenon can occur on non-linear electrolyte only when current density reaches a certain value so that corrosion on a negative electrode mould can be better avoided. The blade molded surface electrolysis negative electrode mould protecting device has the advantages of effectively preventing an electrode mould from being corroded, prolonging service life, reducing times of repairing welding and finishing, and stabilizing electrochemical machining precision.
Description
Technical field
The present invention relates to electrical-chemistry method field, specifically provide a kind of method for designing of blade profile electrolysis cathode mold protecting device.
Background technology
Affect Electrolyzed Processing precision, the factor of surface quality and processing stability is a lot, as the design of negative electrode, manufacture, the control of correction and machining gap, the component of electrolyte, concentration, proportioning and processing electric current, voltage etc., because in turbine blades in electrochemical machining, the accuracy of repetition of electrolysis blade profile is largely the profile precision depending on negative electrode mould, because the surplus of the blade blank blade profile basin back of the body is uneven, the surplus of processing the Leaf basin back of the body is caused to be uneven, cause the processing Leaf basin back of the body can not arrive preset size simultaneously, and the electrode of stopping power supply that puts in place in advance can produce anodic solution phenomenon, original profile of electrode is made to change and directly affect electrolysis precision and the quality of blade profile.
Summary of the invention
The object of the invention is effectively to prevent electrode die from corroding to reach, increasing the service life, reduce repair welding, repair the object of number of times and stable electrolysis machining accuracy, spy provides a kind of method for designing of blade profile electrolysis cathode mold protecting device.
The invention provides a kind of method for designing of blade profile electrolysis cathode mold protecting device, it is characterized in that: the method for designing of described blade profile electrolysis cathode mold protecting device is, 3000 amperes of rectifier power sources 5 are being equipped with for DJ-3 two-sided blade electrolysis machine tool, a Power Resistor 3 in parallel on two silicon controlled rectification power source negative plates, specifically select 14-24 sheet ZB2 lathe resistor disc, parallel combination becomes the resistor 3 of 0.03 ohm-0.05 ohm/800 watts, if negative electrode mould 1 first puts in place, resistor 3 produces a negative potential on 1, negative electrode mould, its current potential is reduced, the electrode making it put in place in advance keeps negative potential, between two electrodes, potential difference reduces, the corrosion current produced reduces thereupon, until cut-out electric current, thus reach and prevent electrode die from corroding, increase the service life, reduce repair welding, finishing number of times and stable electrolysis machining accuracy,
After having added resistor disc, because the electrode potential arriving first size has had reduction, from and and anode between form a new potential difference, therefore, faint Electrolyzed Processing effect is also had to blade 4, two-sided all arrives precalculated position after, enforcement starts instantaneously, carry out secondary to the basin back type face processed to wash away, solve problem electrode being had to faint electrolysis;
Resistor 3 can be connected in the middle of two electrodes by without stint for a long time, because in the two-sided process of major part, two electrodes are in equipotential, and resistor 3 no current passes through, therefore inactivity consumption, and just when single-sided process momently, resistor 3 just works;
Adopt in processing or add passivation electrolyte, requirement is nonlinear electrolyte, NaNO
3, NaClO
3better can strengthen Cutting clearance and cut off electric current, thus prevent the corrosion of target mould more reliably, analyze from the process velocity-current density plot of Fig. 2 electrolyte, as long as linear electrolyte has electric current just to have dissolve generation, and nonlinear electrolyte is when current density reaches certain value, just have electrochemical dissolution phenomenon, better avoid negative electrode mould to corrode.
Advantage of the present invention:
The method for designing of blade profile electrolysis cathode mold protecting device of the present invention, effectively prevents electrode die from corroding, increases the service life, and reduces repair welding, finishing number of times, stablizes electrolysis machining accuracy.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is Electrolyzed Processing schematic diagram;
Fig. 2 is process velocity and current density relation curve.
Detailed description of the invention
Embodiment 1
Present embodiments provide a kind of method for designing of blade profile electrolysis cathode mold protecting device, it is characterized in that: the method for designing of described blade profile electrolysis cathode mold protecting device is, 3000 amperes of rectifier power sources 5 are being equipped with for DJ-3 two-sided blade electrolysis machine tool, a Power Resistor 3 in parallel on two silicon controlled rectification power source negative plates, specifically select 14-24 sheet ZB2 lathe resistor disc, parallel combination becomes the resistor 3 of 0.03 ohm-0.05 ohm/800 watts, if negative electrode mould 1 first puts in place, resistor 3 produces a negative potential on 1, negative electrode mould, its current potential is reduced, the electrode making it put in place in advance keeps negative potential, between two electrodes, potential difference reduces, the corrosion current produced reduces thereupon, until cut-out electric current, thus reach and prevent electrode die from corroding, increase the service life, reduce repair welding, finishing number of times and stable electrolysis machining accuracy,
After having added resistor disc, because the electrode potential arriving first size has had reduction, from and and anode between form a new potential difference, therefore, faint Electrolyzed Processing effect is also had to blade 4, two-sided all arrives precalculated position after, enforcement starts instantaneously, carry out secondary to the basin back type face processed to wash away, solve problem electrode being had to faint electrolysis;
Resistor 3 can be connected in the middle of two electrodes by without stint for a long time, because in the two-sided process of major part, two electrodes are in equipotential, and resistor 3 no current passes through, therefore inactivity consumption, and just when single-sided process momently, resistor 3 just works;
Adopt in processing or add passivation electrolyte, requirement is nonlinear electrolyte, NaNO
3, NaClO
3better can strengthen Cutting clearance and cut off electric current, thus prevent the corrosion of target mould more reliably, analyze from the process velocity-current density plot of Fig. 2 electrolyte, as long as linear electrolyte has electric current just to have dissolve generation, and nonlinear electrolyte is when current density reaches certain value, just have electrochemical dissolution phenomenon, better avoid negative electrode mould to corrode.
Claims (1)
1. the method for designing of a blade profile electrolysis cathode mold protecting device, it is characterized in that: the method for designing of described blade profile electrolysis cathode mold protecting device is, 3000 amperes of rectifier power sources (5) are being equipped with for DJ-3 two-sided blade electrolysis machine tool, a Power Resistor (3) in parallel on two silicon controlled rectification power source negative plates, specifically select 14-24 sheet ZB2 lathe resistor disc, parallel combination becomes the resistor (3) of 0.03 ohm-0.05 ohm/800 watts, if negative electrode mould (1) first puts in place, resistor (3) produces a negative potential in negative electrode mould (1) face, its current potential is reduced, the electrode making it put in place in advance keeps negative potential, between two electrodes, potential difference reduces, the corrosion current produced reduces thereupon, until cut-out electric current, thus reach and prevent electrode die from corroding, increase the service life, reduce repair welding, finishing number of times and stable electrolysis machining accuracy,
After having added resistor disc, the electrode potential arriving first size has had reduction, and form a new potential difference between anode, faint Electrolyzed Processing effect is had to blade (4), two-sided all arrive precalculated position after, implement to start instantaneously, secondary is carried out to the basin back type face processed and washes away, solve problem electrode being had to faint electrolysis;
Resistor (3) can be connected in the middle of two electrodes by without stint for a long time, in the two-sided process of major part, two electrodes are in equipotential, and resistor (3) no current passes through, therefore inactivity consumption, just when single-sided process momently, resistor (3) just works;
Adopt in processing or add passivation electrolyte, requirement is nonlinear electrolyte, NaNO
3, NaClO
3better can strengthen Cutting clearance and cut off electric current, thus prevent the corrosion of target mould more reliably, as long as linear electrolyte has electric current just to have dissolve generation, and nonlinear electrolyte is when current density reaches certain value, just have electrochemical dissolution phenomenon, better avoid negative electrode mould to corrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324866.4A CN103056462B (en) | 2011-10-24 | 2011-10-24 | Designing method of blade molded surface electrolysis negative electrode mould protecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324866.4A CN103056462B (en) | 2011-10-24 | 2011-10-24 | Designing method of blade molded surface electrolysis negative electrode mould protecting device |
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| CN103056462A CN103056462A (en) | 2013-04-24 |
| CN103056462B true CN103056462B (en) | 2015-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076405A (en) * | 2019-05-10 | 2019-08-02 | 中国航发南方工业有限公司 | Shaped Cathode for radial diffuser inter-leaf flow channel forming |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6747946B2 (en) * | 2016-11-25 | 2020-08-26 | 三菱日立パワーシステムズ株式会社 | Electric discharge machining method and electric discharge machine |
| CN107962260B (en) * | 2017-11-23 | 2020-07-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Blade blank design method for electrolytic machining |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6968290B2 (en) * | 2001-03-27 | 2005-11-22 | General Electric Company | Electrochemical machining tool assembly and method of monitoring electrochemical machining |
| CN101704142A (en) * | 2009-11-19 | 2010-05-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for electrochemically machining titanium alloy large-scale blades |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050098445A1 (en) * | 2003-11-10 | 2005-05-12 | General Electric Company | Electrochemical machining method, tool assembly, and monitoring method |
| US8470160B2 (en) * | 2009-09-28 | 2013-06-25 | General Electric Company | Methods, systems and apparatus relating to electrochemical machining |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6968290B2 (en) * | 2001-03-27 | 2005-11-22 | General Electric Company | Electrochemical machining tool assembly and method of monitoring electrochemical machining |
| CN101704142A (en) * | 2009-11-19 | 2010-05-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for electrochemically machining titanium alloy large-scale blades |
Non-Patent Citations (2)
| Title |
|---|
| 小型整流叶片型面电解加工工艺研究;王德新,徐斌,崔义;《2005年中国机械工程学会年会》;20051105;全文 * |
| 盛文娟.钛合金叶片型面电解加工工艺研究.《金属加工(冷加工)》.2011, * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076405A (en) * | 2019-05-10 | 2019-08-02 | 中国航发南方工业有限公司 | Shaped Cathode for radial diffuser inter-leaf flow channel forming |
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Granted publication date: 20150408 Termination date: 20171024 |