CN211135823U - In-situ co-liquid electrochemical composite processing device - Google Patents
In-situ co-liquid electrochemical composite processing device Download PDFInfo
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- CN211135823U CN211135823U CN201922208479.9U CN201922208479U CN211135823U CN 211135823 U CN211135823 U CN 211135823U CN 201922208479 U CN201922208479 U CN 201922208479U CN 211135823 U CN211135823 U CN 211135823U
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- 239000007788 liquid Substances 0.000 title claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- 239000003792 electrolyte Substances 0.000 claims abstract description 40
- 238000004070 electrodeposition Methods 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000003754 machining Methods 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 10
- 230000005518 electrochemistry Effects 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 12
- 238000003487 electrochemical reaction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 39
- 229910052802 copper Inorganic materials 0.000 description 39
- 239000010949 copper Substances 0.000 description 39
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 21
- 229910052697 platinum Inorganic materials 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 9
- 239000010963 304 stainless steel Substances 0.000 description 8
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 8
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 7
- 239000004327 boric acid Substances 0.000 description 7
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 7
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 229910001437 manganese ion Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 229910001453 nickel ion Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 102100023774 Cold-inducible RNA-binding protein Human genes 0.000 description 1
- 101000906744 Homo sapiens Cold-inducible RNA-binding protein Proteins 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- PLNJNALNCZDQNM-UHFFFAOYSA-N [Ag+2].[O-][Mn]([O-])(=O)=O Chemical compound [Ag+2].[O-][Mn]([O-])(=O)=O PLNJNALNCZDQNM-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
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Abstract
The utility model discloses an in-situ is liquid electrochemistry composite processing device altogether belongs to the electrochemical machining field. The device comprises a jet flow electrodeposition processing system, an electrolytic finishing system, an electrochemical restoration system, a conductive substrate and a metal layer. Based on the device, a metal layer is deposited on a conductive substrate by a radio-current electrodeposition process, an electrolytic polishing system is adopted to polish the surface of the deposited metal layer to remove the defects of accretion, burrs and the like of the metal layer, an electrochemical recovery system is utilized to recover the electrolyte, so that high-valence metal ions in the electrolyte are supplied and circulated as required, the sustainability of polishing processing and the dynamic balance of the whole electrochemical reaction system are maintained, and jet-current electrodeposition processing, electrochemical polishing processing and electrochemical recovery processing are alternately and repeatedly carried out until the processed parts meet the processing requirements. The utility model discloses simple structure, the processing cost is low, and machining precision and efficient can solve the problem that jet electrodeposition layer exists well.
Description
Technical Field
The utility model relates to an electrochemical machining field especially relates to a normal position is liquid electrochemistry composite processing device altogether.
Background
Electrodeposition processing is an electrochemical processing technique based on electrochemical principles for depositing metal layers/features on a cathode substrate. The technology has the advantages of high replication forming precision, low process cost, large material selection range, low operation temperature, large material performance regulation and control scale and the like, and is widely applied in the industrial field. Jet electrodeposition processing is a particular form of electrodeposition processing. The technology is a maskless electrodeposition processing technology for carrying out selective electrodeposition on a cathode substrate by taking high-speed jet as a carrier, has the advantages of high deposition speed, good selectivity, high degree of freedom and the like, and is concerned and emphasized in certain application fields, particularly in the field of rapid manufacturing of three-dimensional metal microstructures. But the jet electrodeposition technology has the inherent characteristics that the mass transfer speed and the electric field distribution of a deposition micro-area are not uniform, so that the deposition layer is distorted, and the phenomena of uneven thickness distribution, uneven surface, accumulated tumors, burrs and the like occur.
In order to overcome the above disadvantages, Rapid electro-deposition forming technology is disclosed in the document Rapid machining by electro-deposition using electron jet, published in 1998 in CIRP Annals, which is assisted by an intermittent grinding step to remove surface nodules and burrs and the like in an off-line secondary processing manner to maintain continuous electro-deposition, wherein the grinding time accounts for 2/3 of the total processing time, resulting in extremely low processing efficiency of the rotator, and the cost is high, the invention patent No. Z L201010588837.4 discloses a high-speed jet electroforming processing method and device for a part, which uses a high-speed jet to selectively deposit microstructures on the surface of the rotator, and simultaneously uses a hard particle on-line grinding method alternately to remove the nodules and burrs and the like of the electrodeposited part, so that the spraying can be performed stably, but the product of the grinding of hard particles is not good for maintenance of the solution, and the device and method related to the patent are only suitable for parts, and the device and method related to the three-dimensional parts or micro-structural parts are prepared by a new and complicated in-situ electrochemical corrosion system for removing the hard particles.
Disclosure of Invention
In view of the above problem, the utility model aims at providing an normal position is liquid electro-chemistry combined machining device altogether to the not enough of current efflux electrodeposition method is difficult to continuous processing out three-dimensional metal microstructure that organizational structure is fine and close, the surfacing is smooth, the precision is high.
In order to solve the technical problem, the technical scheme of the utility model is that:
an in-situ co-liquid electrochemical composite processing device comprises a jet flow electrodeposition system, an electrolytic polishing system, an electrochemical recovery system, a conductive substrate and a metal layer; the jet flow electrodeposition system comprises a spray head, an electrodeposition power supply and an electrolyte beam; the spray head is arranged opposite to the conductive substrate; the electrolytic polishing system comprises an electrolytic processing power supply, an electrolytic coulometer, a connecting block, a front vertical cathode, a rear vertical cathode, a horizontal cathode and electrolyte; the anode of the electrolytic machining power supply is connected with the conductive substrate; the negative electrode of the electrolytic processing power supply is connected with the electrolytic coulombmeter in series and then is connected with the front vertical cathode, the rear vertical cathode and the horizontal cathode; the front vertical cathode comprises a front vertical cathode high current density area and a front vertical cathode low current density area; the rear vertical cathode comprises a rear vertical cathode high current density area and a rear vertical cathode low current density area; the horizontal cathode comprises a horizontal cathode high current density area and a horizontal cathode low current density area; the electrochemical restoration system comprises an electrochemical restoration coulometer, an electrochemical restoration power supply and an insoluble anode; the anode of the electrochemical restoration power source is connected with an insoluble anode; the negative electrode of the electrochemical restoration power supply is connected with the electrochemical restoration coulometer in series and then is connected with the front vertical cathode.
The positive electrode and the negative electrode of the electrodeposition power supply are respectively connected with the vertically arranged spray head and the horizontally arranged conductive substrate.
The front vertical cathode, the rear vertical cathode and the insoluble anode are vertically arranged on the horizontally arranged connecting block, and the distance between the front vertical cathode and the rear vertical cathode is adjustable.
The distance between the insoluble anode and the front vertical cathode can be changed within the range of 1 mm-5 mm.
The rotating speeds of the front vertical cathode, the rear vertical cathode and the horizontal cathode are all 0.5-5 revolutions per second.
The front vertical cathode, the rear vertical cathode and the horizontal cathode are all porous metal rods with the porosity of 80-95% and the diameter of 1-5 mm and are cylindrical.
The electrolyte and the electrolyte beam both contain 10 g/L-40 g/L variable valence metal ions.
The method for electrochemically machining the three-dimensional metal microstructure by using the device comprises the following steps of:
s1, jet electrodeposition processing: adjusting the height of the spray head relative to the conductive substrate to be 1 mm-5 mm, opening a switch of the spray head, enabling an electrolyte beam sprayed by the spray head to be vertically sprayed to the conductive substrate, switching on an electrodeposition power supply, simultaneously driving the spray head to perform scanning movement relative to the conductive substrate at a movement speed of 1 mm/s-5 mm/s according to a set track, at the moment, electrodepositing a metal layer on the conductive substrate, and when the spray head scans the end point of a designed track, closing the electrodeposition power supply, switching off the switch of the spray head, and enabling the spray head to exit from a processing area;
s2, electrochemical finishing: placing a metal layer at the bottom of a horizontal cathode and between a front vertical cathode and a rear vertical cathode, respectively adjusting the distance from the horizontal cathode to the upper surface of the metal layer and the distance between the front vertical cathode and the rear vertical cathode and the side wall of the metal layer to be equal and 0.1-1 mm, completely immersing the horizontal cathode and the metal layer in an electrolyte, rotating the front vertical cathode, the rear vertical cathode and the horizontal cathode, switching on an electrochemical machining power supply, and respectively performing electrochemical finishing machining on the upper surface and the two side surfaces of the metal layer without metal precipitation by the horizontal cathode, the front vertical cathode and the rear vertical cathode, wherein part of high-valence metal ions in the electrolyte around a front vertical cathode high current density area, a rear vertical cathode high current density area and a horizontal cathode high current density area are reduced to low-valence metal ions, and the front vertical cathode low current density area, The back vertical cathode low current density area and the horizontal cathode low current density area generate hydrogen evolution reaction, when the smoothness of the upper surface and two side surfaces of the metal layer reach the processing requirement, the finishing processing is stopped, the electric quantity of the electrolytic coulometer is recorded, and the electrolytic processing power supply is closed;
s3, electrochemical restoration processing: switching on an electrochemical recovery power supply, adjusting the voltage between the front vertical cathode and the insoluble anode to ensure that the front vertical cathode only has a hydrogen evolution reaction and the insoluble anode only has an oxygen evolution reaction, meanwhile, oxidizing low-valence metal ions in the electrolyte into high-valence metal ions by the evolved oxygen, taking a small amount of electrolyte for detection, and when the low-valence metal ions cannot be detected in the electrolyte, switching off the electrochemical recovery power supply to ensure that the front vertical cathode, the rear vertical cathode, the horizontal cathode and the insoluble anode stop rotating and exit from the processing area;
s4, adjusting the liquid level height of the electrolyte to make the upper surface of the metal layer processed in the step S3 completely positioned outside the electrolyte;
s5, repeating the steps S1, S2, S3 and S4 until all operations are finished when the machined part reaches the required height and surface finish.
Compared with the prior art, the invention has the following advantages:
1. simple structure, easy realization, high machining precision and machining efficiency and good surface quality. The operations of repeated loading and unloading of the microscale workpiece, complex secondary processing and the like can be avoided only by adding the simple-structured electrolytic polishing system and the electrochemical recovery system on the conventional jet electrodeposition system, so that the problems of the jet electrodeposition piece/layer can be solved, the processing precision and the surface quality of the electrodeposition piece/layer can be improved, and the efficient high-quality (high precision, high surface quality, high mechanical and mechanical properties and the like) manufacture of the metal microstructure and the part can be realized.
2. The dynamic balance and stability of the electrolyte system are good. The electrochemical restoration step is added, the supply and circulation of high-valence metal ions in the electrolyte as required are realized, the sustainability of the finishing processing and the dynamic balance and stability of the whole electrochemical reaction system are maintained, the same electrolyte system (in-situ liquid sharing) is adopted, the complex operations of repeated loading and unloading, liquid changing, cleaning and the like of the microscale workpiece are avoided, the processing efficiency is improved, the process cost is reduced, and the practicability and the applicability of the microstructure and part preparation technology are enhanced.
Drawings
FIG. 1 is an assembly view of an in-situ co-liquid electrochemical hybrid processing apparatus according to the present invention.
FIG. 2 is a schematic diagram of an electrolytic polishing process and an electrochemical recovery process in an in-situ co-liquid electrochemical hybrid processing apparatus according to the present invention.
Reference numbers and designations in the drawings: 1. an electrolytic machining power supply; 2. an electrolytic coulometer; 3. connecting blocks; 4. a front vertical cathode; 4-1, a front vertical cathode high current density region; 4-2, a front vertical cathode low current density region; 5. a rear vertical cathode; 5-1, a rear vertical cathode high current density region; 5-2 rear vertical cathode low current density region; 6. a horizontal cathode; 6-1, horizontal cathode high current density region; 6-2, horizontal cathode low current density region; 7. a spray head; 8. an electrodeposition power supply; 9. a conductive substrate; 10. a metal layer; 11. an electrolyte; 12. an electrolyte bundle; 13. an electrochemically restored coulometer; 14. an electrochemical restoration power source; 15. an insoluble anode.
Detailed Description
The following describes the implementation of the in-situ co-hydraulic electrochemical hybrid processing apparatus according to the present invention with reference to fig. 1 and 2, and the implementation is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are provided.
An in-situ co-liquid electrochemical combined machining device is characterized by comprising a jet flow electro-deposition system, an electrolytic polishing system, an electrochemical restoration system, a conductive substrate 9 made of 304 stainless steel and a nickel metal layer 10, wherein the jet flow electro-deposition system comprises a jet cylinder type platinum spray head 7, an electro-deposition power supply 8, an electrolyte beam 12 containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L), the cylindrical platinum spray head 7 is arranged opposite to the conductive substrate 9 made of 304 stainless steel, the electrolytic polishing system comprises an electrolytic machining power supply 1, an electrolytic coulometer 2 and a connecting block 3 made of an organic glass plate, the porosity of the connecting block is 90%, the front vertical foamy copper cylindrical cathode 4, the rear vertical foamy copper cylindrical cathode 5 and the horizontal foamy copper cylindrical cathode 6 and the anode containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L), the electrolyte 11 of high silver manganate (20 g/L), the electrolyte 11), the anode of the electrolyte of the electrochemical power supply 11 is connected in series, the coulomb cathode 6, the anode of the electrochemical power supply 1 is connected with the electrochemical power supply in series, the cathode of the electrochemical power supply, the electrochemical power supply is connected with the cathode of the anode of the electrochemical copper cylindrical cathode of the electrochemical restoration system, the electrochemical copper, the electrochemical restoration system is connected with the cathode of the electrochemical copper cylindrical cathode of the electrochemical copper, the electrochemical restoration system, the electrochemical copper cylindrical cathode of the electrochemical recovery system is connected with the electrochemical system, the anode of the electrochemical copper cylindrical cathode of the electrochemical recovery system is connected with the electrochemical copper, the electrochemical recovery system is connected with the electrochemical system, the electrochemical recovery system is connected with the electrochemical copper cylinder, the electrochemical system, the electrochemical recovery system is connected with the cathode of the electrochemical copper cylinder, the electrochemical recovery system, the electrochemical.
The positive electrode and the negative electrode of the electrodeposition power supply 8 are connected to a vertically disposed cylindrical platinum showerhead 7 and a horizontally disposed 304 stainless steel conductive base 9, respectively.
The front vertical foamy copper cylindrical cathode 4, the rear vertical foamy copper cylindrical cathode 5 and the platinum anode 15 are all vertically arranged on the horizontally arranged connecting block 3, and the distance between the front vertical foamy copper cylindrical cathode 4 and the rear vertical foamy copper cylindrical cathode 5 is adjustable.
The distance between the platinum anode 15 and the front vertical copper foam cylinder cathode 4 was 3 mm.
The method for electrochemically machining the three-dimensional high-precision metallic nickel microstructure on the conductive substrate 9 made of 304 stainless steel by using the device comprises the following steps of:
s1, performing jet electrodeposition, namely adjusting the height of the cylindrical platinum sprayer 7 relative to the 304 stainless steel conductive substrate 9 to be 2mm, opening a switch of the cylindrical platinum sprayer 7, spraying an electrolyte beam 12 containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L) from the cylindrical platinum sprayer 7 to the 304 stainless steel conductive substrate 9 in a perpendicular mode, switching on an electrodeposition power supply 8, driving the cylindrical platinum sprayer 7 to perform scanning movement relative to the 304 stainless steel conductive substrate 9 at a speed of 2mm/S, reducing nickel ions in the electrolyte beam 12 containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L) into metal nickel atoms under the action of an electric field, depositing the metal nickel atoms on the 304 stainless steel conductive substrate 9 with the strip in a negative mode, forming a metal layer 10, and closing the power supply 8 when the cylindrical platinum sprayer 7 reaches the end point of the set platinum sprayer, and enabling the cylindrical platinum sprayer 7 to exit from a cylindrical processing area;
s2, electrochemical finishing processing, namely, placing the nickel metal layer 10 at the bottom of the horizontal foamy copper cylinder cathode 6 and between the front vertical foamy copper cylinder cathode 4 and the rear vertical foamy copper cylinder cathode 5, respectively adjusting the distance from the horizontal foamy copper cylinder cathode 6 to the upper surface of the nickel metal layer 10 and the distances between the front vertical foamy copper cylinder cathode 4 and the rear vertical foamy copper cylinder cathode 5 and the side walls of the nickel metal layer 10 to be equal and 0.5mm, respectively, and completely immersing the horizontal foamy copper cylinder cathode 6 and the nickel metal layer 10 in an electrolyte 11 containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L), so as to create necessary processing gaps and electrolyte environments for the subsequent electrochemical finishing processing steps, rotating the front vertical foamy copper cylinder cathode 4, the rear vertical foamy copper cylinder cathode 5 and the horizontal foamy copper cylinder cathode 6 at a speed of 2 r/S, respectively, and allowing the front vertical foamy copper cylinder cathode 4 to move along the cathode 6 and the cathode 6 to perform electrochemical finishing processing steps, thereby enabling the electrochemical finishing processing of the nickel metal layer to be more horizontal and the cathode to perform electrochemical finishing processing steps, and the electrochemical finishing process the cathode of the nickel metal layer by scanning process the cathode of the cathode and the cathode of the cathode, thereby enabling the cathode of the cathode 4 and the cathode of the cathode to be more vertical foamy copper cylinder, and the cathode to be more rapid, and the cathode of the cathode to be more rapid, and the cathode of the cathode after electrochemical finishing metal layer:
meanwhile, high-valence manganese ions in the electrolyte around the front vertical foamy copper cylinder cathode high current density area 4-1, the rear vertical foamy copper cylinder cathode high current density area 5-1 and the horizontal foamy copper cylinder cathode high current density area 6-1 are reduced to low-valence manganese ions, and the reaction generated at the moment is as follows:
and the front vertical foamy copper cylinder cathode very low current density area 4-2, the rear vertical foamy copper cylinder cathode very low current density area 5-2 and the horizontal foamy copper cylinder cathode very low current density area 6-2 are subjected to hydrogen evolution reaction to generate a large amount of hydrogen, and the reaction is as follows:
when the smoothness of the upper surface and the side wall of the nickel metal layer 10 meets the processing requirements, finishing processing is stopped, the electric quantity of the electrolytic coulometer 2 is recorded, and the electrolytic processing power supply 1 is closed;
s3, electrochemical restoration processing: the electrochemical recovery power supply 14 is switched on, the voltage between the front vertical foamy copper cylindrical cathode 4 and the platinum anode 15 is adjusted to make the potential of the front vertical foamy copper cylindrical cathode lower than the precipitation potential of nickel ions, so that the precipitation of metal nickel ions is avoided, and then the front vertical foamy copper cylindrical cathode 4 only has hydrogen evolution reaction to generate a large amount of hydrogen, and the reaction is as follows:
the platinum anode 15 only generates oxygen evolution reaction, and generates a large amount of oxygen, and the reaction is as follows:
meanwhile, the low valence state metal manganese ions in the electrolyte 11 are oxidized into high valence state metal manganese ions by the separated oxygen, and the reaction occurs at this time:
after electrochemical restoration processing is carried out for a certain time, a small amount of electrolyte 11 is taken out for detection, sodium hydroxide solution is added into the taken small amount of electrolyte 11, if white manganese hydroxide crystals appear, the electrochemical restoration processing is carried out on the electrolyte 11 continuously until low-valence state metal manganese ions can not be detected in the electrolyte 11, the electric quantity value of an electrochemical restoration coulometer 13 is recorded, an electrochemical restoration power supply 14 is closed, the front vertical foamy copper cylindrical cathode 4 and the platinum anode 15 stop rotating and exit from a processing area, meanwhile, the electric quantity consumed by the electrochemical restoration processing and the electric quantity consumed by the electrochemical finishing processing are quantitatively analyzed and recorded, thus, a judgment basis can be provided for detecting when a small amount of electrolyte 11 is taken in the next electrochemical restoration processing, the efficiency of the electrochemical restoration processing is improved, and timely supply and circulation of multi-valence state metal ions according to needs are realized, thereby maintaining the sustainability of the finishing processing and the dynamic balance of the whole electrochemical reaction system;
s4, adjusting the liquid level height of the electrolyte containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L), so that the upper surface of the nickel metal layer 10 electrochemically polished in the step S3 is completely positioned outside the electrolyte 11 containing nickel sulfamate (360 g/L), nickel chloride (10 g/L), boric acid (25 g/L) and silver permanganate (20 g/L);
s5, repeating the steps S1, S2, S3 and S4 until the machined part reaches the required height and surface finish, and finishing all the operations in such a way (the jet electrodeposition machining, the electrochemical finishing machining and the electrochemical recovery machining are alternately repeated), wherein the metal microstructure prepared by the electrochemical machining and the precision and the surface quality of the part are ideal.
Claims (7)
1. The utility model provides an in situ is liquid electro-chemistry composite processing device altogether which characterized in that: the device comprises a jet flow electrodeposition system, an electrolytic polishing system, an electrochemical recovery system, a conductive substrate (9) and a metal layer (10); the jet flow electrodeposition system comprises a spray head (7), an electrodeposition power supply (8) and an electrolyte beam (12); the spray head (7) is arranged opposite to the conductive substrate (9); the electrolytic polishing system comprises an electrolytic processing power supply (1), an electrolytic coulometer (2), a connecting block (3), a front vertical cathode (4), a rear vertical cathode (5), a horizontal cathode (6) and electrolyte (11); the anode of the electrolytic machining power supply (1) is connected with the conductive substrate (9); the negative electrode of the electrolytic machining power supply (1) is connected with the electrolytic coulombmeter (2) in series and then is connected with the front vertical cathode (4), the rear vertical cathode (5) and the horizontal cathode (6); the front vertical cathode (4) comprises a front vertical cathode high current density area (4-1) and a front vertical cathode low current density area (4-2); the rear vertical cathode (5) comprises a rear vertical cathode high current density area (5-1) and a rear vertical cathode low current density area (5-2); the horizontal cathode (6) comprises a horizontal cathode high current density area (6-1) and a horizontal cathode low current density area (6-2); the electrochemical restoration system comprises an electrochemical restoration coulometer (13), an electrochemical restoration power supply (14) and an insoluble anode (15); the positive electrode of the electrochemical restoration power source (14) is connected with an insoluble anode (15); the negative electrode of the electrochemical recovery power supply (14) is connected with the electrochemical recovery coulometer (13) in series and then is connected with the front vertical cathode (4).
2. The in-situ co-liquid electrochemical composite processing device according to claim 1, wherein: the anode and the cathode of the electrodeposition power supply (8) are respectively connected with a vertically arranged spray head (7) and a horizontally arranged conductive substrate (9).
3. The in-situ co-liquid electrochemical composite processing device according to claim 1, wherein: the front vertical cathode (4), the rear vertical cathode (5) and the insoluble anode (15) are vertically arranged on the horizontally arranged connecting block (3), and the distance between the front vertical cathode (4) and the rear vertical cathode (5) is adjustable.
4. The in-situ co-liquid electrochemical composite processing device according to claim 1, wherein: the distance between the insoluble anode (15) and the front vertical cathode (4) can be changed within the range of 1 mm-5 mm.
5. The in-situ co-liquid electrochemical composite processing device according to claim 1, wherein: the rotating speeds of the front vertical cathode (4), the rear vertical cathode (5) and the horizontal cathode (6) are all 1-5 revolutions per second.
6. The in-situ co-liquid electrochemical composite processing apparatus according to claim 1 or 5, wherein: the front vertical cathode (4), the rear vertical cathode (5) and the horizontal cathode (6) are all porous metal rods with the porosity of 80-95% and the diameter of 1-5 mm and are cylindrical.
7. The in-situ co-liquid electrochemical composite processing device as claimed in claim 1, wherein the electrolyte (11) and the electrolyte bundle (12) both contain metal ions with variable valence state in an amount of 10 g/L-40 g/L.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110842308A (en) * | 2019-12-11 | 2020-02-28 | 河南理工大学 | In-situ liquid-sharing electrochemical composite processing device and method |
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| CN110842308A (en) * | 2019-12-11 | 2020-02-28 | 河南理工大学 | In-situ liquid-sharing electrochemical composite processing device and method |
| CN110842308B (en) * | 2019-12-11 | 2024-08-13 | 河南理工大学 | In-situ co-liquid electrochemical composite processing device and method |
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