CN104120475A - Non-contact micro arc polishing process and device thereof - Google Patents
Non-contact micro arc polishing process and device thereof Download PDFInfo
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- CN104120475A CN104120475A CN201410398240.1A CN201410398240A CN104120475A CN 104120475 A CN104120475 A CN 104120475A CN 201410398240 A CN201410398240 A CN 201410398240A CN 104120475 A CN104120475 A CN 104120475A
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Abstract
The invention relates to the field of material processing and in particular relates to a metal product surface non-contact micro arc polishing process and device thereof. The process comprises the following steps: preparing electrolyte, designing parameters of the cathode and anode, controlling a flow field environment, setting parameters of a power supply and performing micro arc polishing. The device comprises a micro arc polishing power supply and an electrolytic cell, wherein the electrolyte is arranged in the electrolytic cell; two poles of the micro arc polishing power supply are inserted into the electrolyte; a cooling water system is arranged at the periphery of the electrolytic cell; and the two poles of the micro arc polishing power supply are electrically connected with a control system through a signal acquisition unit. With adoption of the process and device, the micro arc polishing process has the advantage that atomic-scale layer-by-layer stripping can be performed, the process defect of inconsistent interference of the electrode potential is overcome, the process is not limited by anode metal components and phase composition, complex curved surface shape members can be met, and the process aims of sub-micron to nano-scale precision polishing and machining requirements can be achieved.
Description
Technical field
The present invention relates to material processing field, particularly a kind of for metal products surface non-contact differential of the arc glossing and device thereof.
Background technology
The metals such as magnesium, aluminium, titanium and alloy thereof are because its proportion is little, thermal conductivity is good, specific tenacity specific rigidity is high, be easy to the advantage such as machine-shaping, aboundresources, make them obtain increasingly extensive application in fields such as aerospace, automotive industry, communications electronics industry, light industry building materials, petrochemical complex, biomedicines, demonstrated application prospect very widely.But adopt the once through moulding technology such as die casting extruding because of this type of alloy product, complicated global shape is difficult to carry out mechanical type contact sanding and polishing precision truing method, develops the contactless polishing technology of peeling off and just seems particularly important more.
Along with the raising of the world today to the requirement of materials processing precise treatment, as key members such as engine turbine blades, contact grinding and polishing technology is difficult to reach its complicated curve form and high-level working accuracy, and therefore contactless polishing tends to pay attention to as prefered method.Contactless polishing comprises the methods such as electrical spark, Ultra-Violet Laser, particle beam, this type of technology all can reach requirement on machining accuracy, but in its principle, all belong to hot-working process, can be on machined surface produce and be greater than one micron of even recast layer and tiny crack and unrelieved stress etc. of ten microns, and then have influence on the mechanical property such as fatigue strength of member.Therefore finding a kind of high-grade requirement on machining accuracy that both can meet complex geometric shapes, make again machined layer without thermal stresses and the residual finishing method of mechanical stress, is the one innovation of processing technique field, has good suitability for industrialized production prospect.
Its principle of differential of the arc polishing technology constructs one deck parcel anode metal " oxygen enrichment plasma body air gap film " in electrochemical system.By frequency, voltage and the pulsed current of regulation and control pulsing circuit, so that the Voltammetric Relation at " oxygen enrichment plasma body air gap film " two ends is in " differential of the arc section of the anti-ohm property of geseous discharge bimodal curve ", can make atoms metal and the direct chemical combination of electronegative oxygen plasma in heat emission state generate insoluble oxide compound, thereby reach the object of peeling off matrix.Use differential of the arc polishing technology starting a new way aspect metal processing, further to provide technical support to China's metal material processing field.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of process stabilization, machined layer noresidue stress, metal surface polishing technique and device that working accuracy is high.
For solving above-mentioned technical problem, a kind of contactless differential of the arc glossing of the present invention comprises the following steps:
Configuration electrolytic solution: the metallic matrix of polishing configuration differential arc oxidation electrolytic solution as required, and the polishing precision reaching as required adds additive in differential arc oxidation electrolytic solution;
Design anode and cathode parameter: according to needing spacing between size adjustment control differential of the arc polishing power supply two electrodes of polishing workpiece at 1-80mm;
Control flow field environment: according to polishing and removal requirement, design flow field system;
Power parameter is set: described differential of the arc polishing power acquisition direct current pulse power source, pulse waveform is square wave; According to metallic matrix control voltage 300-600V, the Mai Kuan ⊿ t of regulation and control peak point current waveform
onfor 2-80us, Jian Ge ⊿ t between two pulses
offfor 10-200us;
Differential of the arc polishing: workpiece is placed in to electrolytic solution and reacts, control between electrolyte temperature 25-60 DEG C treatment time 8-40min in reaction process.
Further, the additive adding in described arrangements of steps electrolytic solution is NaCl solution, KCl solution, NaF solution, NaHCO
3the mixing solutions of one or more in solution, NaOH solution, total amount is 0.5-5g/L.
Further, in the environment of described step control flow field, described flow field system adopts fluid line from bottom to top, and flow rate control is at 0.5-2m/s.
Further, between the polishing of the described step differential of the arc, workpiece is carried out to oil removing grease removal, in acetone or alcohol and distilled water, clean 3-5min, then dry up.
Further, described step arranges in power parameter, can select constant current mode or constant voltage mode, wherein peak current density 10-200A/dm under constant current mode
2; Output voltage 200-600V under constant voltage mode.
In addition, the invention still further relates to a kind of contactless differential of the arc burnishing device, comprise differential of the arc polishing power supply and electrolyzer, in described electrolyzer, be placed with electrolytic solution, insert in electrolytic solution at the two poles of the earth of described differential of the arc polishing power supply; Described electrolyzer periphery is provided with cooling water system; The two-stage of described differential of the arc polishing power supply is electrically connected with Controlling System by signal gathering unit.
Adopt after above-mentioned technique and device, differential of the arc glossing of the present invention has advantages of and can atom level successively peel off, evade the technique shortcoming that disturbed by electropotential discordance, and be not subject to anode metal constituent element and thing phase composite restriction, can meet complex-curved shaped element, can realize the technique object of sub-micro and processing request precise polished to nano level.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structural representation of the contactless differential of the arc burnishing device of the present invention.
Fig. 2 a is schematic diagram before aluminium alloy polishing of the present invention.
Fig. 2 b is schematic diagram after aluminium alloy polishing of the present invention.
In figure: 1 is differential of the arc polishing power supply, and 2 is electrolyzer, and 3 is water inlet pipe, and 4 is rising pipe, and 5 is signal gathering unit, and 6 is Controlling System.
Embodiment
Differential of the arc polishing technology of the present invention and the difference of traditional differential arc oxidation are that differential arc oxidation is to go out layer of ceramic film at valve metal anode surface growth in situ, and the present invention utilize anode metal atom under the external electric field environment of high energy pulse because thereby point discharge is peeled off generation polishing effect with metallic matrix having most advanced and sophisticated place and the direct chemical combination of electronegative oxygen plasma to generate insoluble oxide compound, and differential of the arc polishing is not subject to the restriction of anode metal constituent element and thing phase composite.
The principle of the contactless differential of the arc glossing of the present invention is as follows: first, configure suitable electrolyte system and be beneficial to anode surface formation " oxygen enrichment air gap film ", regulation and control O
2generating rate just can realize the formation of " oxygen enrichment air gap film ".Meanwhile, by the impedance effect of air gap film and ordering about of external circuit constant current master mode, construct the electric field environment that is enough to puncture ionization " oxygen enrichment air gap film "; The monopulse parameter (pulse strength) of regulation and control external electric field circuit, make its intensity not only be enough to make the oxygen height ionization in air gap film, also the volt-ampere characteristic in Yao Shi ionization district in geseous discharge bimodal curve by aura to (differential of the arc ionization district) between the anti-ohmic region of arc light transition, with by this ionization heat, realize and bring out anode top layer metal through heat emission until micro-molten object; Foundation is above in the academic thought of " building plasma physics removal mechanisms at work in electro-chemical systems ", according to the different requirements of polishing and removal, design suitable flow field system, by gas-liquid mixture fluid between anode and cathode " turbulent flow ", realize precise polished by " turbulent flow grinds ", or make its " laminar flow ", and borrow the tangential force of gas-liquid mixture fluid " laminar flow " that resultant is taken out of between anode and cathode, realize retrofit object.
Embodiment one:
Present embodiment adopts aluminum alloy sample, and the step that it is carried out to differential of the arc polishing is as follows:
Step (1): configuration electrolytic solution, the present embodiment is with (NaPO
3)
6as main electrolytic solution, simultaneously using NaOH solution as additive, liquor capacity is 80L, and solution total concn is 40g/L, and wherein NaOH is 1.2g/L, stirs, and adjusts pH value at 7-10.
Step (2): design anode and cathode parameter, using stainless steel as cathode material, cross-sectional shape is circular, and diameter is 30 × 30mm, and negative electrode is aimed to aluminium alloy, and making pole distance is 30mm.
Step (3): control flow field environment, according to the requirement of polishing and removal, design the present embodiment adopts top-down fluid line, and flow field velocity is controlled at 0.8m/s.
Step (4): power parameter is set, and electric source modes is selected constant current mode, and pulse-repetition is 10KHz, and electric current is 20A.
Step (5): differential of the arc polishing, in differential of the arc polishing process, observe the electrolyte temperature demonstrating on polishing operation platform, in the time that exceeding 40 DEG C, temperature opens cooling water system, and according to strong and weak size of current and the pulse-repetition suitably adjusted of the arc light of workpiece surface, time length 30min, powered-down, takes out workpiece.
After taking out workpiece, carry out cleaning-drying, then workpiece pattern and physicals are measured, its surface topography obtains under SEM scanning electron microscope; Roughness adopts optical surface topography measurement instrument to measure.
Measuring result is: roughness records 1.403um, polishing thickness 2mm.Before and after its polishing, comparison diagram is shown in Fig. 2 a and Fig. 2 b.
Embodiment two:
Present embodiment adopts magnesium alloy sample, and the step that it is carried out to differential of the arc polishing is as follows:
Step (1): configuration electrolytic solution, the present embodiment is using silicate as main electrolytic solution, simultaneously with NaHCO
3solution is additive, and interpolation concentration is 3g/L, and liquor capacity is 80L, and solution total concn is 40g/L, stirs.
Step (2): adjust negative electrode and positive electrode distance, negative electrode is square stainless steel plate, and size is 150mm × 250mm, makes negative electrode aim at anode magnesium alloy, and interpole gap is 80mm.
Step (3): control flow field environment, according to the requirement of polishing and removal, design the present embodiment adopts top-down fluid line, and flow field velocity is 1m/s.
Step (4): power parameter is set, and electric source modes is selected constant voltage mode, and pulse-repetition is 20KHz, pulsewidth 40us, voltage is 500V.
Step (5): differential of the arc polishing, in differential of the arc polishing process, observe the electrolyte temperature demonstrating on polishing operation platform, in the time that exceeding 40 DEG C, temperature opens cooling water system, and according to strong and weak size of current and the pulse-repetition value suitably adjusted of the arc light of workpiece surface, time length 20min, powered-down, takes out workpiece.
Its detection mode is with embodiment 1, and its roughness measurement result is 1.579um, and polishing thickness is 3mm.
In above-mentioned two kinds of embodiments, for the ease of differential of the arc polishing and raising polishing precision, between the polishing of the described step differential of the arc, workpiece is carried out to oil removing grease removal, in acetone or alcohol and distilled water, clean 3-5min, then dry up.
The device that above-mentioned two kinds of embodiments adopt as shown in Figure 1, comprises differential of the arc polishing power supply 1 and electrolyzer 2, in described electrolyzer 2, is placed with electrolytic solution, and the two-stage of described differential of the arc polishing power supply 1 is inserted in electrolytic solution.Described electrolyzer periphery is provided with cooling water system, and cooling water system comprises water inlet pipe 3 and rising pipe 4 here.The two-stage of described differential of the arc polishing power supply 1 is electrically connected with Controlling System 6 by signal gathering unit 5.
The principle of work of device of the present invention is as follows: anode and cathode is changed into up and down and being settled, then utilize the setup parameter control interpole gap of signal gathering unit 5, thereby control polishing precision.The principle of work of the electrolyte system of this device is extracted and flowed out by negative electrode from top to bottom and the anode of flowing through reinjects in electrolyzer from electrolyzer 2 by water pump, reusable edible, and the subsidiary cooling water pipeline of water pump carries out cooling to electrolytic solution.Water pump is connected with Controlling System 6, can control electrolyte temperature and flow velocity.The flow Field Design such by electrolytic solution can realize the precise polished of anode workpiece in conjunction with certain electric field environment again.Finally, supply with anode and cathode voltage thereby adopt external differential of the arc polishing power supply to connect pole plate, polishing power supply can switch between constant current and two kinds of patterns of constant voltage.
Although more than described the specific embodiment of the present invention; but those skilled in the art are to be understood that; these only illustrate; can make various changes or modifications to present embodiment; and not deviating from principle of the present invention and essence, protection scope of the present invention is only limited by appended claims.
Claims (6)
1. a contactless differential of the arc glossing, is characterized in that, comprises the following steps:
Configuration electrolytic solution: the metallic matrix of polishing configuration differential arc oxidation electrolytic solution as required, and add additive in differential arc oxidation electrolytic solution;
Design anode and cathode parameter: according to needing spacing between size adjustment control differential of the arc polishing power supply two electrodes of polishing workpiece at 1-80mm;
Control flow field environment: according to polishing and removal requirement, design flow field system;
Power parameter is set: described differential of the arc polishing power acquisition direct current pulse power source, pulse waveform is square wave; According to metallic matrix control voltage 300-600V, the Mai Kuan ⊿ t of regulation and control peak point current waveform
onfor 2-80us, Jian Ge ⊿ t between two pulses
offfor 10-200us;
Differential of the arc polishing: workpiece is placed in to electrolytic solution and reacts, control between electrolyte temperature 25-60 DEG C treatment time 8-40min in reaction process.
2. according to the contactless differential of the arc glossing of one claimed in claim 1, it is characterized in that: the additive adding in described arrangements of steps electrolytic solution is NaCl solution, KCl solution, NaF solution, NaHCO
3the mixing solutions of one or more in solution, NaOH solution, total amount is 0.5-5g/L.
3. according to the contactless differential of the arc glossing of one claimed in claim 1, it is characterized in that: in the environment of described step control flow field, described flow field system adopts fluid line from bottom to top, and flow rate control is at 0.5-2m/s.
4. according to the contactless differential of the arc glossing of one claimed in claim 1, it is characterized in that: between the polishing of the described step differential of the arc, workpiece is carried out to oil removing grease removal, in acetone or alcohol and distilled water, clean 3-5min, then dry up.
5. according to the contactless differential of the arc glossing of one claimed in claim 1, it is characterized in that: described step arranges in power parameter, can select constant current mode or constant voltage mode, wherein peak current density 10-200A/dm under constant current mode
2; Output voltage 200-600V under constant voltage mode.
6. a contactless differential of the arc burnishing device, is characterized in that: comprise differential of the arc polishing power supply and electrolyzer, in described electrolyzer, be placed with electrolytic solution, the two-stage of described differential of the arc polishing power supply is inserted in electrolytic solution; Described electrolyzer periphery is provided with cooling water system; The two-stage of described differential of the arc polishing power supply is electrically connected with Controlling System by signal gathering unit.
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| CN201410398240.1A CN104120475B (en) | 2014-08-13 | 2014-08-13 | A kind of contactless differential of the arc glossing and device thereof |
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| CN201410398240.1A CN104120475B (en) | 2014-08-13 | 2014-08-13 | A kind of contactless differential of the arc glossing and device thereof |
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| CN104120475A true CN104120475A (en) | 2014-10-29 |
| CN104120475B CN104120475B (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424733A (en) * | 2016-12-13 | 2017-02-22 | 广东汉唐量子光电科技有限公司 | CoCrMo alloy dental crown 3D printing and electrolytic polishing combined machining system |
| CN109082693A (en) * | 2017-06-13 | 2018-12-25 | 昆山汉鼎精密金属有限公司 | Fountain differential arc oxidation method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737211A (en) * | 2005-07-04 | 2006-02-22 | 江门市福斯特金属表面处理技术发展有限公司 | Differential arc oxidization abrasive polishing method for stainless steel surface |
| CN1919118A (en) * | 2006-06-06 | 2007-02-28 | 江门市福斯特金属加工工艺有限公司 | Manufacturing method of stainless non-stick pan and apparatus thereof |
| CN101239009A (en) * | 2008-01-29 | 2008-08-13 | 乐普（北京）医疗器械股份有限公司 | Controlled degradation differential arc oxidized metallic support and manufacture method thereof |
| CN103103598A (en) * | 2011-11-14 | 2013-05-15 | 丁明永 | Magnesium alloy surface treatment process |
-
2014
- 2014-08-13 CN CN201410398240.1A patent/CN104120475B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737211A (en) * | 2005-07-04 | 2006-02-22 | 江门市福斯特金属表面处理技术发展有限公司 | Differential arc oxidization abrasive polishing method for stainless steel surface |
| CN1919118A (en) * | 2006-06-06 | 2007-02-28 | 江门市福斯特金属加工工艺有限公司 | Manufacturing method of stainless non-stick pan and apparatus thereof |
| CN101239009A (en) * | 2008-01-29 | 2008-08-13 | 乐普（北京）医疗器械股份有限公司 | Controlled degradation differential arc oxidized metallic support and manufacture method thereof |
| CN101239009B (en) * | 2008-01-29 | 2010-09-15 | 乐普（北京）医疗器械股份有限公司 | Controlled degradation microarc oxidized metallic support and manufacture method thereof |
| CN103103598A (en) * | 2011-11-14 | 2013-05-15 | 丁明永 | Magnesium alloy surface treatment process |
Non-Patent Citations (1)
| Title |
|---|
| 杨亮: "镁合金微弧氧化过程控制与监测系统", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424733A (en) * | 2016-12-13 | 2017-02-22 | 广东汉唐量子光电科技有限公司 | CoCrMo alloy dental crown 3D printing and electrolytic polishing combined machining system |
| CN109082693A (en) * | 2017-06-13 | 2018-12-25 | 昆山汉鼎精密金属有限公司 | Fountain differential arc oxidation method and device |
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| CN104120475B (en) | 2016-08-17 |
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