CN116377542A - Passivation treatment process for new energy automobile workpiece - Google Patents
Passivation treatment process for new energy automobile workpiece Download PDFInfo
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- CN116377542A CN116377542A CN202310318444.9A CN202310318444A CN116377542A CN 116377542 A CN116377542 A CN 116377542A CN 202310318444 A CN202310318444 A CN 202310318444A CN 116377542 A CN116377542 A CN 116377542A
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- 238000002161 passivation Methods 0.000 title claims abstract description 64
- 238000011282 treatment Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000005498 polishing Methods 0.000 claims abstract description 38
- 238000007605 air drying Methods 0.000 claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 238000005406 washing Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 210000001503 joint Anatomy 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 15
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000002845 discoloration Methods 0.000 claims description 10
- 241001311547 Patina Species 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000002791 soaking Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000001978 electrochemical passivation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- CLDVQCMGOSGNIW-UHFFFAOYSA-N nickel tin Chemical compound [Ni].[Sn] CLDVQCMGOSGNIW-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a passivation treatment process of a new energy automobile workpiece, which belongs to the technical field of metal passivation and comprises the steps of degreasing, washing, polishing, secondary washing, passivation, tertiary washing, air drying, sealing, cleaning, drying, detecting and storing, and a displacement mechanism, a cleaning mechanism and an air drying mechanism which are applied to the steps.
Description
Technical Field
The invention belongs to the technical field of metal passivation surface treatment of new energy automobile workpieces, and particularly relates to a passivation treatment process of workpieces.
Background
With the increasing maturity and popularization of new energy automobiles, corresponding new accessories are more and more, the requirements on product performance are also higher and more, copper material circuit conductive accessories on the new energy automobiles are oxidized by a strong oxidant or an electrochemical method, so that the surfaces are changed into inactive states, namely passivation is realized, and the service life of the conductive accessories is prolonged.
The prior art discloses a Chinese patent with the application number of CN201510702084.8, and discloses an automobile copper alloy passivation process which comprises degreasing, multiple times of cleaning with clear water, acid adding and cleaning, passivation treatment in different solvents, drying and storage. The copper alloy treated by the method is not easy to change color when applied to automobile parts, has strong corrosion resistance and surface passivation effect compared with a single solvent treatment process, and the used solvent does not pollute the environment, can be recycled, has low cost and short production treatment period and has good market prospect.
Some copper fittings do not need surface nickel or tin electroplating, only the surface is subjected to pickling and passivating treatment, the conventional passivating treatment and the liquid medicine of a plurality of liquid medicine factories cannot meet the requirements at present, the liquid medicine of a plurality of surface treatment factories cannot meet the requirements, the neutral salt fog is subjected to patina in 24 hours, the distance from the standard is far from 48 hours, the difficulty is high, and the high-performance and high-quality production and use of the new energy automobile fittings cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a passivation treatment process for a new energy automobile workpiece, and aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the passivation treatment process of the workpiece comprises the following steps:
s1, oil removal: firstly, installing a workpiece to be treated on a hanger, then installing the hanger on a butt joint frame, moving the workpiece into an oil removal bin through a displacement mechanism, and removing oil from the workpiece by using an organic solvent;
s2, washing: after oil removal is completed, moving the workpiece into a cleaning bin through a displacement mechanism, and cleaning the workpiece through a cleaning mechanism;
s3, polishing: after the cleaning is finished, the workpiece is moved into a chemical polishing bin through a displacement mechanism, and the workpiece is subjected to chemical polishing;
s4, secondary water washing: immediately repeating the step S2, and fully washing to clean the liquid medicine on the workpiece;
s5, passivating: after the cleaning is finished, moving the workpiece into a passivation bin through a displacement mechanism, and passivating the workpiece;
s6, washing with water for three times: and (3) after passivation is finished, repeating the step (S2) and fully flushing;
s7, air-drying: after the workpiece is washed, the workpiece is moved into an air drying mechanism through a displacement mechanism to be subjected to air drying treatment;
s8, sealing: after air drying treatment, the workpiece is moved into a closed bin through a displacement mechanism, so that a closed layer is formed on the surface of the workpiece;
s9, cleaning: repeating the steps S6 and S7 to remove water drops on the surface of the workpiece;
s10, drying: putting the workpiece into a dryer, and starting the dryer to carry out drying treatment;
s11, detection: salt spray testing is carried out on the workpiece, and the length of time for generating patina on the workpiece is observed;
s12, storing: placing the materials in a dry environment for stacking and preserving.
As a preferred embodiment of the present invention, in the step S1 to S12, the displacement mechanism includes:
the annular rail is positioned on the upper side of the oil removal bin, is supported by the support frame, and is internally connected with an arc-shaped block in a sliding manner;
the top seat is fixedly connected to the top of the support frame and is positioned on the upper side of the annular track;
one end of the straight rail frame is fixedly connected with the arc-shaped block;
the horizontal moving assembly is arranged on the straight rail frame and is used for driving the hanging tool to move horizontally so as to control the workpiece to move linearly;
the worm and gear assembly is arranged at the lower side of the straight rail frame and is used for adjusting the angle of the workpiece;
the lifting moving assembly is arranged at the lower side of the worm and gear assembly and is used for lifting and adjusting the height of the workpiece; and
and the annular moving assembly is arranged on the upper side of the top seat and is used for driving the straight rail to intermittently rotate so as to control the destination of the movement of the workpiece.
As a preferable scheme of the invention, the horizontal movement assembly comprises a screw rod sleeve, a ball screw and a first motor, wherein the screw rod sleeve is in sliding connection with the inside of the straight rail frame, the ball screw is in rotary connection between the inner walls of the straight rail frame, the screw rod sleeve is in threaded connection with the circumferential surface of the ball screw, the first motor is fixedly connected with the other end of the straight rail frame, and the output end of the first motor is fixedly connected with the ball screw.
As a preferable scheme of the invention, the worm and gear assembly comprises a mounting box, a worm wheel, a worm and a third motor, wherein the mounting box is fixedly connected to the bottom of the screw rod sleeve, the worm wheel is rotatably connected between the upper inner wall and the lower inner wall of the mounting box, the worm is rotatably connected between the side inner walls of the mounting box, the third motor is fixedly connected to the side part of the mounting box, the output end of the third motor is fixedly connected to the worm, and the worm is meshed with the worm wheel.
As a preferable scheme of the invention, the lifting moving assembly comprises an electric push rod and a butt joint frame, wherein the electric push rod is rotatably arranged at the bottom of the mounting box, the butt joint frame is fixedly connected with the extension end of the butt joint frame, and the hanging frame is detachably connected in the butt joint frame.
As a preferable scheme of the invention, the annular moving assembly comprises a positioning plate, a first mounting shaft, a grooved pulley, a bent frame, a second motor and a driving plate, wherein the positioning plate is fixedly connected to the top of the straight rail frame, the first mounting shaft is rotatably connected to a top seat and extends to the upper side and the lower side, one end of the first mounting shaft is fixedly connected to the positioning plate, the grooved pulley is fixedly connected to the other end of the first mounting shaft, the bent frame is fixedly connected to the top of the top seat, the second motor is fixedly connected to the top of the bent frame, the driving plate is fixedly connected to the output end of the second motor, and the driving plate is meshed with the grooved pulley.
As a preferable scheme of the invention, the cleaning mechanism comprises an annular pipe and a spray head, wherein the annular pipe is fixedly connected to the inner wall of the cleaning bin, the spray head is fixedly connected to the inner side of the annular pipe, one end of the annular pipe is fixedly connected with an external pipe, the external pipe penetrates through the cleaning bin and extends outwards, and a valve is arranged on the external pipe.
As a preferable scheme of the invention, the air drying mechanism comprises a double-pass box and two fans, wherein the double-pass box is positioned at the lower side of the top seat, the two fans are fixedly connected to one side of the double-pass box, which is far away from each other, the output ends of the two fans are fixedly connected with air expansion pipes, the two air expansion pipes are communicated with the top of the double-pass box, a channel is arranged at the top of the double-pass box, and the hanging rack can pass through the channel.
As a preferable scheme of the invention, the cleaning bin is positioned at the center of the oil removing bin, the chemical polishing bin, the passivation bin, the sealing bin and the double-pass box, the oil removing bin, the chemical polishing bin, the passivation bin, the sealing bin and the double-pass box are arranged in an equidistant five-pointed star mode, strong alkaline cleaning liquid is stored in the oil removing bin, copper polishing liquid is stored in the chemical polishing bin, potassium dichromate solution is stored in the passivation bin, and anti-discoloration solution is stored in the sealing bin.
As a preferable scheme of the invention, a collection bin is arranged among the oil removal bin, the chemical polishing bin, the passivation bin, the sealing bin, the two-way box and the cleaning bin, and a drain pipe is arranged at the bottom of the collection bin.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, through the electrolytic passivation process and the use of the copper anti-discoloration agent, a passivation layer is formed on the surface of a workpiece by adopting a cathode electrolytic process, the use of a sealing layer protects the passivation layer from being damaged, the occurrence time of patina is greatly prolonged, namely the service life of the workpiece treated by the process is effectively prolonged, nickel or tin is not required to be electroplated on the surface, and only the surface is subjected to acid washing and passivation treatment, so that the use of nickel-tin metal materials can be greatly saved, the product cost is greatly reduced, and the market value and the prospect are huge.
2. The destination that the work piece moved in this scheme is located the upside of deoiling storehouse, chemical polishing storehouse, passivation storehouse, closed storehouse and bi-pass case respectively, and after every work piece accomplished deoiling to closed step, circulated repeatedly goes on, makes work piece processing more automatic, reduces artifical the participation, effectively provides work efficiency and staff's healthy.
3. In this scheme can drive worm rethread installing box output and slowly rotate, the worm drives worm wheel rethread installing box and downwardly extending, and electric putter fixed connection drives electric putter rethread and rotates in the axle center lower extreme of worm wheel promptly when the worm wheel rotates, realizes can nimble angle of adjusting the work piece, conveniently controls the work piece and washs, deoiling, work such as passivation.
4. In this scheme, can carry out no dead angle through shower nozzle blowout clear water to the work piece and wash, compare current soaking and wash, the higher effect of cleaning efficiency is better, and the work piece after passivation can have unnecessary liquid if not carrying out other treatments, can take place the appropriate chemical reaction because losing the electric ion electroplating effect through wasing on the surface, further gets rid of the unnecessary liquid on surface, guarantees that the work piece surface is clean and tidy.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of the whole oil removal and air drying process according to the present invention;
FIG. 3 is a diagram of the circular track structure of the present invention;
FIG. 4 is a schematic diagram of a portion of the degreasing and air-drying process according to the present invention;
FIG. 5 is a block diagram of a hanger of the present invention;
FIG. 6 is a view showing a structure of a cleaning mechanism according to the present invention;
FIG. 7 is a block diagram of an air drying mechanism according to the present invention;
FIG. 8 is a diagram of a displacement mechanism of the present invention;
FIG. 9 is an exploded view of the horizontal movement of the present invention;
FIG. 10 is a block diagram of the sheave structure of the present invention
Fig. 11 is an exploded view of the worm gear structure of the present invention.
The reference numerals in the figures illustrate: 1. a deoiling bin; 2. a chemical polishing bin; 3. passivating the bin; 4. closing the bin; 5. cleaning a bin; 6. an annular tube; 7. a spray head; 8. an outer connecting pipe; 9. a valve; 10. a support frame; 11. an endless track; 12. a top base; 13. a straight rail frame; 14. an arc-shaped block; 15. a screw rod sleeve; 16. a ball screw; 17. a first motor; 18. a positioning plate; 19. a first mounting shaft; 20. a sheave; 21. bending the frame; 22. a second motor; 23. a dial; 24. a mounting box; 25. a worm wheel; 26. a worm; 27. a third motor; 28. an electric push rod; 29. a butt joint frame; 30. a hanging rack; 31. a hanging tool; 32. a double pass box; 33. a channel; 34. a blower; 35. an air expansion pipe; 36. a collecting bin; 37. and (5) a water drain pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1 to 11, the technical solution provided in this embodiment is as follows:
the passivation treatment process of the workpiece comprises the steps of degreasing, washing, polishing, secondary washing, passivation, tertiary washing, air drying, sealing, cleaning, drying, detection and storage, and a displacement mechanism, a cleaning mechanism and an air drying mechanism applied to the steps, wherein the specific steps are as follows:
s1, oil removal: firstly, installing a workpiece to be treated on a hanging frame 30, then installing a hanging tool 31 on a butt joint frame 29, moving the workpiece into an oil removal bin 1 through a displacement mechanism, and removing oil from the workpiece by using an organic solvent;
s2, washing: after the oil removal is finished, moving the workpiece into the cleaning bin 5 through the displacement mechanism, and cleaning the workpiece through the cleaning mechanism;
s3, polishing: after the cleaning is finished, the workpiece is moved into the chemical polishing bin 2 through the displacement mechanism, and the workpiece is subjected to chemical polishing;
s4, secondary water washing: immediately repeating the step S2, and fully washing to clean the liquid medicine on the workpiece;
s5, passivating: after the cleaning is finished, moving the workpiece into a passivation bin 3 through a displacement mechanism, and passivating the workpiece;
s6, washing with water for three times: and (3) after passivation is finished, repeating the step (S2) and fully flushing;
s7, air-drying: after the workpiece is washed, the workpiece is moved into an air drying mechanism through a displacement mechanism to be subjected to air drying treatment;
s8, sealing: after air drying treatment, the workpiece is moved into a closed bin 4 through a displacement mechanism, so that a closed layer is formed on the surface of the workpiece;
s9, cleaning: repeating the steps S6 and S7 to remove water drops on the surface of the workpiece;
s10, drying: putting the workpiece into a dryer, and starting the dryer to carry out drying treatment;
s11, detection: salt spray testing is carried out on the workpiece, and the length of time for generating patina on the workpiece is observed;
s12, storing: placing the materials in a dry environment for stacking and preserving.
In the specific embodiment of the invention, as shown in fig. 5, a plurality of hanging tools 31 are arranged on a hanging frame 30, a plurality of workpieces can be simultaneously arranged, an oil removing bin 1, a chemical polishing bin 2, a passivation bin 3, a closed bin 4 and a two-way box 32 are arrayed in five-angle equal intervals, a cleaning bin 5 is positioned at the centers of the oil removing bin 1, the chemical polishing bin 2, the passivation bin 3, the closed bin 4 and the two-way box 32, strong alkaline cleaning liquid is stored in the oil removing bin 1, the pH value of the alkaline cleaning liquid is more than 12, oil stains on the surfaces can be removed when the workpieces are soaked, copper polishing liquid is stored in the chemical polishing bin 2, the workpieces can be polished when soaked, the soaking time is about 2-3 minutes, potassium dichromate solution is stored in the passivation bin 3, the concentration of the potassium dichromate solution is 50-100g/L in a cathode passivation mode, the pH value is 12.5-14, the anode material is stainless steel, the workpieces are passivated, the enclosed bin 4 is internally stored with an anti-discoloration agent, in particular to a copper anti-discoloration agent MS-423, various different types of coating methods can be adopted, such as brushing, spraying, dipping and the like, after the coating, the liquid is automatically volatilized for 15 minutes to 2 hours, for example, trace white spots or mottle can appear after the coating is uneven or spin-dried unevenly, the liquid is wiped by clean soft cloth, the color can be kept for a long time without discoloration, the anti-rust function is good, no adverse effect is caused on the workpiece, the workpiece is not damaged, an annular pipe 6 is arranged in the cleaning bin 5, the surface of the annular pipe 6 is provided with a plurality of spray heads 7 which are annularly arranged, when the workpiece is positioned in the cleaning bin 5, the workpiece can be cleaned without dead angle through spraying clear water by the spray heads 7, compared with the existing soaking cleaning, the cleaning efficiency is higher, the effect is better, and if the passivated workpiece is not subjected to other treatments, the surface can be provided with redundant liquid, a proper amount of chemical reaction can occur due to the loss of an electric ion electroplating effect through cleaning, the redundant liquid on the surface is further removed, the surface of a workpiece is guaranteed to be clean and tidy, then the workpiece is moved into the double-pass box 32, the fan 34 is started to blow water to the surface of the workpiece, surface water drops are primarily removed, after fewer water drops are formed on the surface of the workpiece, the workpiece is placed into a dryer, the temperature is regulated to 80-90 ℃, drying treatment is performed, the blowing water and the drying are matched for use, the workpiece can be quickly dried, the working efficiency is improved, then salt spray testing is performed on the workpiece, the time of generating patina on the surface of the workpiece is observed, the passivation layer is formed on the surface of the workpiece through the electrolytic passivation process and the use of the copper anti-discoloration agent, the use of the cathode electrolytic process is adopted, the passivation layer is protected, the passivation layer is not damaged, the occurrence time of the patina is greatly prolonged, the service life of the workpiece treated by the process is effectively prolonged, nickel or tin on the surface is not needed, the surface is only subjected to acid washing and passivation treatment, the use of nickel-tin metal materials is greatly saved, the cost is greatly reduced, and the market value and the market is greatly has huge.
Specifically, the displacement mechanism includes:
the annular rail 11 is positioned on the upper side of the oil removal bin 1, is supported by the support frame 10, and is internally connected with an arc-shaped block 14 in a sliding manner;
a top seat 12 fixedly connected to the top of the support frame 10 and located on the upper side of the annular track 11;
a straight rail frame 13, one end of which is fixedly connected to the arc-shaped block 14;
the horizontal moving assembly is arranged on the straight rail frame 13 and is used for driving the hanging tool 31 to move horizontally to control the workpiece to move linearly, and comprises a screw rod sleeve 15, a ball screw 16 and a first motor 17, wherein the screw rod sleeve 15 is connected in the straight rail frame 13 in a sliding manner, the ball screw 16 is connected between the inner walls of the straight rail frame 13 in a rotating manner, the screw rod sleeve 15 is connected on the circumferential surface of the ball screw 16 in a threaded manner, the first motor 17 is fixedly connected with the other end of the straight rail frame 13, and the output end of the first motor 17 is fixedly connected with the ball screw 16;
the worm gear and worm assembly is arranged on the lower side of the straight rail frame 13 and is used for adjusting the angle of a workpiece, the worm gear and worm assembly comprises a mounting box 24, a worm wheel 25, a worm 26 and a third motor 27, the mounting box 24 is fixedly connected to the bottom of the screw rod sleeve 15, the worm wheel 25 is rotationally connected between the upper inner wall and the lower inner wall of the mounting box 24, the worm 26 is rotationally connected between the side inner walls of the mounting box 24, the third motor 27 is fixedly connected to the side part of the mounting box 24, the output end of the third motor 27 is fixedly connected to the worm 26, and the worm 26 is meshed with the worm wheel 25;
the lifting moving assembly is arranged at the lower side of the worm gear assembly and is used for lifting and adjusting the height of a workpiece, and comprises an electric push rod 28 and a butt joint frame 29, wherein the electric push rod 28 is rotatably arranged at the bottom of the mounting box 24, the butt joint frame 29 is fixedly connected to the extension end of the butt joint frame 29, and a hanging frame 30 is detachably connected in the butt joint frame 29;
the annular moving assembly is arranged on the upper side of the top seat 12 and is used for driving the straight rail frame 13 to intermittently rotate so as to control the destination of the workpiece to move, the annular moving assembly comprises a positioning plate 18, a first mounting shaft 19, a grooved pulley 20, a bent frame 21, a second motor 22 and a driving plate 23, the positioning plate 18 is fixedly connected to the top of the straight rail frame 13, the first mounting shaft 19 is rotatably connected to the top seat 12 and extends to the upper side and the lower side, one end of the first mounting shaft 19 is fixedly connected to the positioning plate 18, the grooved pulley 20 is fixedly connected to the other end of the first mounting shaft 19, the bent frame 21 is fixedly connected to the top of the top seat 12, the second motor 22 is fixedly connected to the top of the bent frame 21, the driving plate 23 is fixedly connected to the output end of the second motor 22, and the driving plate 23 is meshed with the grooved pulley 20.
In the specific embodiment of the invention, as shown in fig. 9, the screw rod sleeve 15 can slide in the straight rail frame 13, the screw rod sleeve 15 is in threaded connection with the surface of the ball screw rod 16, when in use, the first motor 17 is started, the ball screw rod 16 is driven to rotate through the output end of the first motor 17, the ball screw rod 16 drives the screw rod sleeve 15 to move, the screw rod sleeve 15 can be driven to linearly move in the straight rail frame 13, and finally the workpiece is driven to linearly move in the range of the ball screw rod 16;
as shown in fig. 2 and 10, the top of the top seat 12 is provided with a protective shell, the grooved pulley 20, the bent frame 21, the second motor 22 and the driving plate 23 are all positioned in the protective shell, when in use, the driving plate 23 can be driven to rotate through the output end of the second motor 22, under the action of meshing, the driving plate 23 drives the grooved pulley 20 to intermittently rotate, according to the structural principle of the driving plate 23 and the grooved pulley 20, the grooved pulley 20 pauses for a period of time after each rotation of a constant angle, the grooved pulley 20 can drive the first mounting shaft 19 to intermittently rotate, the first mounting shaft 19 drives the positioning plate 18 to intermittently rotate, finally the straight rail frame 13 is driven to intermittently rotate, one end of the straight rail frame 13 is fixedly connected with the arc-shaped block 14, the arc-shaped block 14 can support the tail end of the straight rail frame 13 to rotate, the stability of the straight rail frame 13 is kept, and the straight rail frame 13 is deflected each time, one side of the straight rail frame 13 close to the positioning plate 18 is basically unchanged, namely, the purpose of workpiece movement is changed, preferably, the destination of workpiece movement of the grooved pulley 20 is respectively positioned on the degreasing bin 1, the chemical polishing bin 2, the passivation bin 3 and the degreasing bin 32 is closed, and the closed side of the workpiece can be repeatedly circulated, and the manual work is reduced, and the manual work is completed, and the work is more efficient and the work is completed;
as shown in fig. 5, a plurality of hanging tools 31 are arranged on the hanging frame 30, a plurality of workpieces can be simultaneously installed for processing, the hanging frame 30 is designed in a detachable manner, the hanging frame 30 can be directly detached for replacement after the processing of the workpieces is completed, the time delay is avoided, the electric push rod 28 is positioned on the upper side of the electric push rod 28, the butt joint frame 29 can be driven to move up and down through the extension end of the electric push rod 28, the butt joint frame 29 drives the hanging frame 30 to move up and down, the height of the workpieces can be flexibly adjusted, and the workpieces are assisted to enter the oil removal bin 1, the chemical polishing bin 2, the passivation bin 3, the closed bin 4 and the double-pass box 32;
as shown in fig. 11, the worm wheel 25 and the worm 26 are both located in the mounting box 24, the output end of the mounting box 24 can drive the worm 26 to rotate slowly, the worm 26 drives the worm wheel 25 to rotate slowly, the axis of the worm wheel 25 penetrates through the mounting box 24 and extends downwards, the electric push rod 28 is fixedly connected to the lower end of the axis of the worm wheel 25, namely, the worm wheel 25 rotates to drive the electric push rod 28 to rotate slowly, so that the angle of a workpiece can be flexibly adjusted, and the workpiece can be conveniently controlled to perform cleaning, degreasing, passivation and other works.
Specifically, the cleaning mechanism comprises an annular pipe 6 and a spray head 7, wherein the annular pipe 6 is fixedly connected to the inner wall of the cleaning bin 5, the spray head 7 is fixedly connected to the inner side of the annular pipe 6, one end of the annular pipe 6 is fixedly connected with an external connecting pipe 8, the external connecting pipe 8 penetrates through the cleaning bin 5 and extends outwards, and a valve 9 is arranged on the external connecting pipe 8.
In the specific embodiment of the invention, as shown in fig. 6, the annular pipe 6 is positioned in the cleaning bin 5, the outer connecting pipe 8 is connected with an external pipeline, clean water enters the annular pipe 6 from the outer connecting pipe 8, then the spray head 7 sprays out, the valve 9 is used for controlling the flow of the clean water, when a workpiece is positioned in the cleaning bin 5, the valve 9 can be opened, the workpiece is automatically cleaned, 360-degree dead angle free cleaning is realized, and the cleaning effect of the workpiece is better and faster.
Specifically, the air drying mechanism comprises a double-pass box 32 and two fans 34, the double-pass box 32 is located at the lower side of the top seat 12, the two fans 34 are fixedly connected to one side of the double-pass box 32 away from each other, the output ends of the two fans 34 are fixedly connected with air expansion pipes 35, the two air expansion pipes 35 are communicated with the top of the double-pass box 32, a channel 33 is formed in the top of the double-pass box 32, and the hanging frame 30 can penetrate through the channel 33.
In the embodiment of the invention, as shown in fig. 7, the hollow design inside the two-way box 32 is adopted, the channel 33 is used for the movement of the hanging frame 30, when the hanging frame 30 moves into the two-way box 32, the workpiece is also positioned in the two-way box 32, the fan 34 is started at this time, wind power is produced by the fan 34, and the workpiece can be subjected to air drying treatment to remove water drops on the surface of the workpiece.
Specifically, the cleaning bin 5 is located at the center of the oil removing bin 1, the chemical polishing bin 2, the passivation bin 3, the sealing bin 4 and the double-pass box 32, the oil removing bin 1, the chemical polishing bin 2, the passivation bin 3, the sealing bin 4 and the double-pass box 32 are arranged in an equidistant five-pointed star mode, strong alkaline cleaning liquid is stored in the oil removing bin 1, copper polishing liquid is stored in the chemical polishing bin 2, potassium dichromate solution is stored in the passivation bin 3, and anti-discoloration solution is stored in the sealing bin 4.
In the specific embodiment of the invention, the cleaning bin 5 is positioned at the centers of the oil removing bin 1, the chemical polishing bin 2, the passivation bin 3, the closed bin 4 and the double-pass box 32, strong alkaline cleaning liquid is stored in the oil removing bin 1, the pH value of the alkaline cleaning liquid is more than 12, greasy dirt on the surface can be removed when a workpiece is soaked, copper polishing liquid is stored in the chemical polishing bin 2, the workpiece can be polished when the workpiece is soaked, the soaking time is about 2-3 minutes, potassium dichromate solution is stored in the passivation bin 3, a cathode passivation mode is adopted, the concentration of the potassium dichromate solution is 50-100g/L, the pH value is 12.5-14, the anode material is stainless steel, the workpiece is passivated, and an anti-discoloration agent, particularly a copper anti-discoloration agent MS-423, can be used in various different forms.
Specifically, a collection bin 36 is arranged among the oil removal bin 1, the chemical polishing bin 2, the passivation bin 3, the sealing bin 4, the double-pass box 32 and the cleaning bin 5, and a drain pipe 37 is arranged at the bottom of the collection bin 36.
In the specific embodiment of the invention, the collecting bin 36 is positioned in the gaps among the oil removing bin 1, the chemical polishing bin 2, the passivation bin 3, the sealing bin 4, the double-pass box 32 and the cleaning bin 5, can automatically collect liquid which is dripped in the process of moving and air drying a workpiece and is discharged through the drain pipe 37, reduces the environmental pollution in the industry, is simple to operate, reduces manual cleaning and lightens the burden of staff.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The passivation treatment process of the new energy automobile workpiece is characterized by comprising the following steps of:
s1, oil removal: firstly, installing a workpiece to be treated on a hanger (30), then installing a hanger (31) on a butt joint frame (29), moving the workpiece into an oil removal bin (1) through a displacement mechanism, and removing oil from the workpiece by using an organic solvent;
s2, washing: after oil removal is completed, moving the workpiece into a cleaning bin (5) through a displacement mechanism, and cleaning the workpiece through a cleaning mechanism;
s3, polishing: after the cleaning is finished, the workpiece is moved into a chemical polishing bin (2) through a displacement mechanism, and the workpiece is subjected to chemical polishing;
s4, secondary water washing: immediately repeating the step S2, and fully washing to clean the liquid medicine on the workpiece;
s5, passivating: after the cleaning is finished, moving the workpiece into a passivation bin (3) through a displacement mechanism, and passivating the workpiece;
s6, washing with water for three times: and (3) after passivation is finished, repeating the step (S2) and fully flushing;
s7, air-drying: after the workpiece is washed, the workpiece is moved into an air drying mechanism through a displacement mechanism to be subjected to air drying treatment;
s8, sealing: after air drying treatment, the workpiece is moved into a closed bin (4) through a displacement mechanism, so that a closed layer is formed on the surface of the workpiece;
s9, cleaning: repeating the steps S6 and S7 to remove water drops on the surface of the workpiece;
s10, drying: putting the workpiece into a dryer, and starting the dryer to carry out drying treatment;
s11, detection: salt spray testing is carried out on the workpiece, and the length of time for generating patina on the workpiece is observed;
s12, storing: placing the materials in a dry environment for stacking and preserving.
2. The passivation process for the new energy automobile workpiece according to claim 1, wherein in the step S1-S12, the displacement mechanism comprises:
the annular rail (11) is positioned on the upper side of the oil removal bin (1), is supported by the support frame (10), and is internally connected with the arc-shaped block (14) in a sliding manner;
the top seat (12) is fixedly connected to the top of the support frame (10) and is positioned on the upper side of the annular track (11);
a straight rail frame (13), one end of which is fixedly connected to the arc-shaped block (14);
the horizontal moving assembly is arranged on the straight rail frame (13) and is used for driving the hanging tool (31) to move horizontally so as to control the workpiece to move linearly;
the worm and gear assembly is arranged on the lower side of the straight rail frame (13) and is used for adjusting the angle of a workpiece;
the lifting moving assembly is arranged at the lower side of the worm and gear assembly and is used for lifting and adjusting the height of the workpiece; and
and the annular moving assembly is arranged on the upper side of the top seat (12) and is used for driving the straight rail frame (13) to intermittently rotate so as to control the destination of the movement of the workpiece.
3. The passivation process of the new energy automobile workpiece according to claim 2, wherein the horizontal movement assembly comprises a screw rod sleeve (15), a ball screw (16) and a first motor (17), the screw rod sleeve (15) is slidably connected in the straight rail frame (13), the ball screw (16) is rotatably connected between inner walls of the straight rail frame (13), the screw rod sleeve (15) is in threaded connection with the circumferential surface of the ball screw (16), the first motor (17) is fixedly connected with the other end of the straight rail frame (13), and the output end of the first motor (17) is fixedly connected with the ball screw (16).
4. A passivation process for new energy automobile workpieces according to claim 3, characterized in that the worm and gear assembly comprises a mounting box (24), a worm wheel (25), a worm (26) and a third motor (27), wherein the mounting box (24) is fixedly connected to the bottom of a screw rod sleeve (15), the worm wheel (25) is rotatably connected between the upper inner wall and the lower inner wall of the mounting box (24), the worm (26) is rotatably connected between the side inner walls of the mounting box (24), the third motor (27) is fixedly connected to the side part of the mounting box (24), the output end of the third motor (27) is fixedly connected to the worm (26), and the worm (26) is meshed with the worm wheel (25).
5. The passivation process of the new energy automobile workpiece according to claim 4, wherein the lifting moving assembly comprises an electric push rod (28) and a butt joint frame (29), the electric push rod (28) is rotatably arranged at the bottom of the mounting box (24), the butt joint frame (29) is fixedly connected to the extension end of the butt joint frame (29), and the hanging frame (30) is detachably connected in the butt joint frame (29).
6. The passivation process of the new energy automobile workpiece according to claim 5, wherein the annular moving assembly comprises a positioning plate (18), a first mounting shaft (19), a grooved wheel (20), a bent frame (21), a second motor (22) and a driving plate (23), the positioning plate (18) is fixedly connected to the top of the straight rail frame (13), the first mounting shaft (19) is rotatably connected to the top seat (12) and extends towards the upper side and the lower side, one end of the first mounting shaft (19) is fixedly connected to the positioning plate (18), the grooved wheel (20) is fixedly connected to the other end of the first mounting shaft (19), the bent frame (21) is fixedly connected to the top of the top seat (12), the second motor (22) is fixedly connected to the top of the bent frame (21), the driving plate (23) is fixedly connected to the output end of the second motor (22), and the driving plate (23) is meshed with the grooved wheel (20).
7. The passivation treatment process of the new energy automobile workpiece according to claim 6, wherein the cleaning mechanism comprises an annular pipe (6) and a spray nozzle (7), the annular pipe (6) is fixedly connected to the inner wall of the cleaning bin (5), the spray nozzle (7) is fixedly connected to the inner side of the annular pipe (6), one end of the annular pipe (6) is fixedly connected with an external pipe (8), the external pipe (8) penetrates through the cleaning bin (5) and extends outwards, and a valve (9) is installed on the external pipe (8).
8. The passivation process for the new energy automobile workpiece according to claim 7, wherein the air drying mechanism comprises a double-pass box (32) and two fans (34), the double-pass box (32) is located at the lower side of the top seat (12), the two fans (34) are fixedly connected to one side, far away from the double-pass box (32), of the double-pass box, the output ends of the two fans (34) are fixedly connected with an air expansion pipe (35), the two air expansion pipes (35) are communicated with the top of the double-pass box (32), a channel (33) is formed in the top of the double-pass box (32), and the hanging frame (30) can penetrate through the channel (33).
9. The passivation treatment process of the new energy automobile workpiece according to claim 8, wherein the cleaning bin (5) is located at the center of the oil removing bin (1), the chemical polishing bin (2), the passivation bin (3), the sealing bin (4) and the double-pass box (32), the oil removing bin (1), the chemical polishing bin (2), the passivation bin (3), the sealing bin (4) and the double-pass box (32) are arranged in an equidistant five-pointed star mode, strong alkaline cleaning liquid is stored in the oil removing bin (1), copper polishing liquid is stored in the chemical polishing bin (2), potassium dichromate solution is stored in the passivation bin (3), and anti-discoloration solution is stored in the sealing bin (4).
10. The passivation treatment process of the new energy automobile workpiece according to claim 9, wherein a collection bin (36) is arranged among the oil removal bin (1), the chemical polishing bin (2), the passivation bin (3), the sealing bin (4), the double-pass box (32) and the cleaning bin (5), and a drain pipe (37) is arranged at the bottom of the collection bin (36).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310318444.9A CN116377542A (en) | 2023-03-29 | 2023-03-29 | Passivation treatment process for new energy automobile workpiece |
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| CN202310318444.9A CN116377542A (en) | 2023-03-29 | 2023-03-29 | Passivation treatment process for new energy automobile workpiece |
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Cited By (1)
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| CN117144449A (en) * | 2023-10-31 | 2023-12-01 | 朔韦茨环境科技(江苏)有限公司 | Inner layer waterproof material plating device for protecting water supply pipeline |
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