CN117305949A - Electrophoretic coating process for mechanical parts - Google Patents
Electrophoretic coating process for mechanical parts Download PDFInfo
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- CN117305949A CN117305949A CN202311295368.0A CN202311295368A CN117305949A CN 117305949 A CN117305949 A CN 117305949A CN 202311295368 A CN202311295368 A CN 202311295368A CN 117305949 A CN117305949 A CN 117305949A
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- electrophoresis
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- degreasing
- mechanical parts
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- 238000000576 coating method Methods 0.000 title claims abstract description 23
- 238000001962 electrophoresis Methods 0.000 claims abstract description 81
- 238000005238 degreasing Methods 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000005406 washing Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 238000005554 pickling Methods 0.000 claims abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000008213 purified water Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 36
- 238000005507 spraying Methods 0.000 claims description 13
- 230000007797 corrosion Effects 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000002791 soaking Methods 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 239000006052 feed supplement Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000004922 lacquer Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000004070 electrodeposition Methods 0.000 claims 9
- 238000004080 punching Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 239000004519 grease Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003973 paint Substances 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
- C25D13/24—Regeneration of process liquids
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a mechanical part electrophoretic coating process, which comprises the following steps: step one, degreasing treatment; step two, washing by using purified water; step three, pickling to remove rust on the surface of the workpiece; step four, repeating the step one and the step two, and then sending the mixture into a phosphating pool; step five, conveying the product to the internal electrophoretic coating processing of the electrophoretic tank after the second water washing; and step six, carrying out three times of water washing, and transferring the water washing to the inside of a drying bin for drying treatment. According to the mechanical part electrophoresis coating process, after the workpiece is acidified, the workpiece is placed in the degreasing solution tank again in a circulating mode to remove grease generated in the rust removal area again, so that the grease removal effect is improved, in the electrophoresis process, the electrophoresis solution in the interior is provided with a flowing effect through the circulating pump, impurities generated in the electrophoresis tank are pushed towards the immersed end, the purity of the workpiece in the electrophoresis process is improved, and the interference of the impurities on the electrophoresis paint coating is reduced.
Description
Technical Field
The invention relates to the technical field of electrophoretic processing, in particular to an electrophoretic coating process for mechanical parts.
Background
The electrophoretic coating process is a coating method which utilizes an external electric field to directionally transfer and deposit particles such as pigment, resin and the like suspended in the electrophoretic liquid on the surface of a substrate of one electrode, and can form a layer of uniform coating film on the surface of a metal when being applied to the surface processing of a mechanical part, thereby effectively isolating the contact between the metal and the external environment, protecting the surface of the metal from oxidation and corrosion, and also realizing smooth, clean, bright and beautiful coating and improving the aesthetic degree of a product.
In the prior art, through degreasing, get rid of impurity and grease on the machine part surface after the washing, then carry out acidizing and come the removal oxidation corrosion area, the coating of the surperficial phosphating film protective layer of rethread phosphating completion, but after machine part surface has extensive corrosion, can lead to acidification to produce extra grease after accomplishing, therefore the degreasing treatment of earlier stage can't be comprehensive get rid of the grease of hiding in corrosion inside, and then interfere follow-up phosphating processing, on the other hand, in the electrophoresis in-process, because the work piece is direct to soak inside from open top in the application electrophoresis lacquer, therefore can produce certain impurity, and then pollute whole electrophoresis tank.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a mechanical part electrophoretic coating process to solve the problems in the prior art, the invention improves the comprehensiveness of degreasing by circularly degreasing after acidification, optimizes the subsequent phosphating treatment effect, controls the circulation flow of an electrophoretic solution in an electrophoresis tank, purifies the internal electrophoretic solution, and enables the subsequent continuous replenishment of electrophoretic paint to be mixed more efficiently and uniformly.
In order to achieve the above object, the present invention is realized by the following technical scheme: an electrophoretic coating process for mechanical parts, comprising the following steps: step one, degreasing treatment, namely, contacting the surface of a workpiece with degreasing fluid and keeping the surface of the workpiece for 2 to 5 minutes; step two, washing with purified water until the waste water generated by washing is not turbid; step three, putting the workpiece into an acid pickling tank for soaking, and removing rust on the surface of the workpiece; step four, repeating the step one and the step two, and then sending the mixture into a phosphating pool; step five, conveying the water to the inside of an electrophoresis tank after secondary washing, wherein a circulating pump is arranged at the bottom of the electrophoresis tank, and a filtering mechanism and a feed supplement mixing assembly are respectively arranged at two ends of the electrophoresis tank and are connected through the circulating pump; step six, carrying out three times of water washing, transferring the workpiece into a drying bin, controlling the air temperature to be 180-250 ℃, and taking out the workpiece after standing for 30 minutes.
Further, the degreasing treatment comprises soaking degreasing and spraying degreasing treatment, wherein the spraying degreasing is carried out on the workpiece, the workpiece is clamped by a clamp and then is vertically placed, degreasing liquid is used for flushing the surface of the workpiece for 2-3 minutes, the workpiece is controlled to continuously move in the spraying process, the temperature of the degreasing liquid is 30-50 ℃, and the spraying pressure is 0.05-0.1 Mpa.
Further, the workpiece is directly put into a degreasing liquid pool in the soaking degreasing process, and is placed for 3-5 minutes in a standing way, and is taken out after degreasing is finished, wherein the temperature of the degreasing liquid is 30-50 ℃.
Further, in the fourth step, the PH value of the solution in the pickling tank is 2-3, the pickling time is 10 minutes, the circulation times are determined according to the oxidation corrosion range and thickness of the workpiece, and the solution can be transferred from the degreasing area to the secondary water washing area after the whole corrosion area is removed from the surface.
Further, the fifth step adopts anodic electrophoresis treatment, the internal voltage of the electrophoresis tank is set to be 150V-200V, the PH value of the electrophoresis solution is set to be 5.6-6.4, and the temperature of the electrophoresis solution is 30 ℃.
Further, the end plates are all installed at the both ends of electrophoresis tank, have seted up a plurality of relief holes on one of them end plate, filtering mechanism includes buffer tank and filtration cavity, the filter screen has been laid to the inboard bottom of filtration cavity, and the one end of filtration cavity is provided with the flushing pipe, the other end of filtration cavity is provided with the relief hole.
Furthermore, the butt joint mouth has been seted up at the top of buffer tank, and the buffer tank aligns with the bottom of filter screen through the butt joint mouth at top, the side of circulating pump is connected with and takes out the pipeline, take out the inside that one end of pipeline inserts the buffer tank.
Further, the electrophoresis solution flows towards the position of the filtering mechanism in the electrophoresis tank, and flows into the filtering cavity after passing through the inside of the discharge hole, and the flushing pipeline is connected with the outside water purifying and then punches out impurities filtered on the filter screen towards the slag discharge hole.
Further, the feed supplement mixing assembly comprises a mixing tank and an inclined plate, a plurality of diversion holes are formed in the surface of the inclined plate, the top of the circulating pump is connected with a conveying pipeline, the top end of the conveying pipeline is connected with a mixing pipeline, and the side edge of the mixing pipeline is connected with the mixing tank.
Further, the top of blending tank is provided with the diffuser plate, the top of diffuser plate is connected with electrophoresis lacquer conveying pipeline, the bottom of blending tank is connected with the reposition of redundant personnel pipeline, the reposition of redundant personnel pipeline passes from the inside in reposition of redundant personnel hole.
The invention has the beneficial effects that:
1. according to the electrophoretic coating process for the mechanical parts, after degreasing treatment and washing are carried out on the workpiece, acidizing treatment is carried out through a soaking mode, the acidized workpiece is placed into the degreasing solution tank in a circulating mode again, grease generated in a rust removing area is removed again, and therefore the grease removing effect is improved.
2. According to the electrophoresis coating process for the mechanical parts, in the electrophoresis process, the flowing effect is provided for the internal electrophoresis solution through the circulating pump, and the flowing direction of the electrophoresis solution is opposite to the immersing moving direction of the workpiece, so that impurities generated in the electrophoresis tank are pushed towards the immersing end in the electrophoresis process, the purity of the workpiece in the electrophoresis process is improved, and the interference of the impurities on the electrophoresis paint coating is reduced.
3. According to the electrophoresis coating process for the mechanical parts, through the flowing effect of the electrophoresis solution, impurities generated in the electrophoresis tank can be concentrated into the interior of the filtration cavity to complete filtration treatment by matching with the terminal filtration mechanism, and the filtered electrophoresis solution is mixed with the supplemented electrophoresis paint in the interior of the feeding mixing assembly, so that the electrophoresis solution is rapidly and efficiently diffused in the interior of the electrophoresis tank.
Drawings
FIG. 1 is a main flow chart of an electrophoretic coating process for mechanical parts according to the present invention;
FIG. 2 is a schematic diagram of an electrophoresis process of an electrophoresis coating process for mechanical parts according to the present invention;
FIG. 3 is a schematic view showing the structure of an electrophoresis tank section according to the present invention;
FIG. 4 is a schematic view of a portion of the filter mechanism of the present invention;
FIG. 5 is a schematic view of the structure of a portion of the feed mixing assembly of the present invention;
in the figure: 1. an electrophoresis tank; 2. an end plate; 3. a cache tank; 4. a filtering mechanism; 5. a supporting plate; 6. a circulation pump; 7. a feed mixing assembly; 8. a discharge hole; 9. a filtration cavity; 10. a filter screen; 11. a slag discharging hole; 12. an interface; 13. flushing the pipeline; 14. drawing out the pipeline; 15. a delivery conduit; 16. a mixing pipe; 17. a mixing tank; 18. an electrophoretic paint conveying pipe; 19. a shunt pipeline; 20. a sloping plate; 21. a diversion aperture; 22. and a diffusion plate.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 5, the present invention provides the following technical solutions:
example 1
An electrophoretic coating process for mechanical parts, comprising the following steps:
1. degreasing, namely, contacting the surface of a workpiece with degreasing fluid, wherein the degreasing comprises soaking degreasing and spraying degreasing, the workpiece is vertically placed after being clamped by a clamp by spraying degreasing, the surface of the workpiece is washed for 2 minutes by means of a spraying pipe, the workpiece is controlled to continuously move in the spraying process, the temperature of the degreasing fluid is 40 ℃, the spraying pressure is 0.1Mpa, and the degreasing fluid is manually observed until grease in a visible area is removed;
2. flushing with purified water until the waste water generated by flushing is not turbid;
3. putting the workpiece into a pickling tank for soaking to remove corrosion on the surface of the workpiece, wherein the PH value of the solution in the pickling tank is 2.5, the pickling time is 10 minutes, the cycle times are determined according to the oxidation corrosion range and thickness of the workpiece, and the workpiece can be transferred from a degreasing area to a secondary water washing area after all corrosion areas are removed from the surface;
4. repeating the steps 1 and 2 until all rust is removed and new grease is not generated on the surface of the workpiece, and then the workpiece can be sent into the phosphating pool;
5. the water is washed for the second time and then is conveyed into the electrophoresis tank 1, a circulating pump 6 is arranged at the bottom of the electrophoresis tank 1, a filtering mechanism 4 and a feed supplement mixing assembly 7 are respectively arranged at two ends of the electrophoresis tank 1, and the filtering mechanism 4 and the feed supplement mixing assembly 7 are connected through the circulating pump 6;
6. and (3) carrying out three times of water washing, transferring the workpiece into a drying bin, controlling the air temperature to be 180-250 ℃, standing for 30 minutes, and taking out the workpiece.
After degreasing treatment and washing, acidizing treatment is carried out on the workpiece in a soaking mode, the acidized workpiece is placed into the degreasing solution tank again in a circulating mode, and grease generated in the rust removing area is removed again, so that the grease removing effect is improved.
Example 2
In the embodiment, the workpiece is directly put into a degreasing liquid tank in the soaking degreasing process, the workpiece is placed for 5 minutes, the workpiece is taken out after degreasing is completed, the degreasing liquid temperature is 50 ℃, the electrophoresis process adopts anode electrophoresis treatment, the internal voltage of the electrophoresis tank 1 is set to 200V, the PH value of the electrophoresis solution is set to 6.4, and the temperature of the electrophoresis solution is 30 ℃.
Example 3
In this embodiment, the two ends of the electrophoresis tank 1 are respectively provided with an end plate 2, one end plate 2 is provided with a plurality of discharge holes 8, the filtering mechanism 4 comprises a buffer tank 3 and a filtering cavity 9, a filter screen 10 is laid at the bottom of the inner side of the filtering cavity 9, one end of the filtering cavity 9 is provided with a flushing pipeline 13, the other end of the filtering cavity 9 is provided with a slag discharge hole 11, the top of the buffer tank 3 is provided with an opposite port 12, the buffer tank 3 is aligned with the bottom of the filter screen 10 through the opposite port 12 at the top, the side edge of the circulating pump 6 is connected with a drawing pipeline 14, one end of the drawing pipeline 14 is connected into the buffer tank 3, the electrophoresis solution flows towards the position of the filtering mechanism 4 in the electrophoresis tank 1, and flows into the filtering cavity 9 after passing through the inside of the discharge holes 8, the flushing pipeline 13 is connected with external purified water and then flushes impurities filtered on the filter screen 10 towards the slag discharge hole 11, in the electrophoresis process, the internal electrophoresis solution is provided with a flowing effect through the circulating pump 6, and the flowing direction of the electrophoresis solution is opposite to the immersing moving direction of the workpiece, so that the impurities generated in the electrophoresis tank 1 are pushed towards the immersing end in the electrophoresis process, the purity degree of the workpiece in the electrophoresis process is improved, the interference of the impurities on the electrophoretic paint coating process is reduced, specifically, the electrophoresis solution in the electrophoresis tank 1 can flow towards the position of the filtering mechanism 4 due to the driving of the bottom circulating pump 6, and the workpiece moves towards the region of the feed mixing assembly 7 after being immersed into the electrophoresis solution from the end, so that the purity degree of the electrophoresis solution is gradually increased along with the reduction of the generated impurities at one end close to the feed mixing assembly 7, after the electrophoretic solution enters the filter cavity 9 from the plurality of discharge holes 8, impurities can be accumulated on the filter screen 10, the filtered electrophoretic solution flows into the bottom buffer tank 3, and finally is recycled through the extraction pipeline 14 and the circulating pump 6.
In this embodiment, the feed mixing assembly 7 includes blending tank 17 and swash plate 20, a plurality of branch flow holes 21 have been seted up on the surface of swash plate 20, the top of circulating pump 6 is connected with pipeline 15, pipeline 15's top is connected with mixing pipeline 16, mixing pipeline 16's side is connected with blending tank 17, blending tank 17's top is provided with diffuser plate 22, diffuser plate 22's top is connected with electrophoresis lacquer conveying pipeline 18, blending tank 17's bottom is connected with branch flow pipe 19, branch flow pipe 19 passes from the inside of branch flow hole 21, through the flow effect of above-mentioned electrophoresis solution, and the inside completion filtration processing of filtering mechanism 4 that cooperates terminal can concentrate electrophoresis tank 1 inside produced impurity to the inside of filtration cavity 9 to the electrophoresis solution after will filtering mixes inside and the electrophoresis lacquer of replenishment of feed mixing assembly 7, high efficiency diffusion is in electrophoresis tank 1's inside.
Specifically, the circulation pump 6 conveys the filtered electrophoretic solution from the conveying pipeline 15 to the diversion pipeline 19, then enters the mixing tank 17 from the diversion pipeline 19, is mixed with additional electrophoretic paint injected by the electrophoretic paint conveying pipe through the inside of the mixing tank 17, finally enters the diversion hole 21 from the diversion pipeline 19, and is communicated with the inside of the electrophoresis tank 1 with different depths by means of the inclined plate 20, so that the mixing process of the electrophoretic paint and the main body part of the electrophoretic solution is accelerated.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The electrophoretic coating process for the mechanical parts is characterized by comprising the following steps of: step one, degreasing treatment, namely, contacting the surface of a workpiece with degreasing fluid and keeping the surface of the workpiece for 2 to 5 minutes; step two, washing with purified water until the waste water generated by washing is not turbid; step three, putting the workpiece into an acid pickling tank for soaking, and removing rust on the surface of the workpiece; step four, repeating the step one and the step two, and then sending the mixture into a phosphating pool; step five, conveying the water to the inside of the electrophoresis tank (1) after carrying out secondary water washing, wherein a circulating pump (6) is arranged at the bottom of the electrophoresis tank (1), a filtering mechanism (4) and a feed supplement mixing assembly (7) are respectively arranged at two ends of the electrophoresis tank (1), and the filtering mechanism (4) and the feed supplement mixing assembly (7) are connected through the circulating pump (6); step six, carrying out three times of water washing, transferring the workpiece into a drying bin, controlling the air temperature to be 180-250 ℃, and taking out the workpiece after standing for 30 minutes.
2. The process for the electrocoating of mechanical parts according to claim 1, characterized in that: the degreasing treatment comprises soaking degreasing and spraying degreasing treatment, wherein the spraying degreasing is carried out on the workpiece, the workpiece is clamped by a clamp and then is vertically placed, degreasing liquid is used for flushing the surface of the workpiece for 2-3 minutes, the workpiece is controlled to continuously move in the spraying process, the temperature of the degreasing liquid is 30-50 ℃, and the spraying pressure is 0.05-0.1 Mpa.
3. The process for the electrocoating of mechanical parts according to claim 2, characterized in that: the soaking degreasing process is to directly put the workpiece into a degreasing liquid pool, stand for 3-5 minutes, take out after degreasing, and the temperature of the degreasing liquid is 30-50 ℃.
4. A process for the electrocoating of mechanical parts according to claim 3, characterized in that: in the fourth step, the PH value of the solution in the pickling tank is 2-3, the pickling time is 10 minutes, the circulation times are determined according to the oxidation corrosion range and thickness of the workpiece, and the solution can be transferred from the degreasing area to the secondary washing area after the whole corrosion area is removed from the surface.
5. The process for the electrocoating of mechanical parts according to claim 1, characterized in that: the fifth step adopts anode electrophoresis treatment, the internal voltage of the electrophoresis tank (1) is set to be 150V-200V, the PH value of the electrophoresis solution is set to be 5.6-6.4, and the temperature of the electrophoresis solution is 30 ℃.
6. The process for the electrocoating of mechanical parts according to claim 5, characterized in that: end plate (2) are all installed at the both ends of electrophoresis tank (1), have seted up a plurality of relief holes (8) on one of them end plate (2), filtering mechanism (4) are including buffer memory jar (3) and filtration cavity (9), filter screen (10) have been laid to the inboard bottom of filtration cavity (9), and the one end of filtration cavity (9) is provided with flushing pipe (13), the other end of filtration cavity (9) is provided with slag hole (11).
7. The process for the electrocoating of mechanical parts according to claim 6, characterized in that: the top of buffer memory jar (3) has offered interface (12), and buffer memory jar (3) are aligned with the bottom of filter screen (10) through the butt joint (12) at top, the side of circulating pump (6) is connected with and takes out pipeline (14), the inside of buffer memory jar (3) is inserted to the one end of taking out pipeline (14), electrophoresis tank (1) bottom install layer board (5), the top at layer board (5) is placed in circulating pump (6).
8. The process for the electrocoating of mechanical parts according to claim 7, wherein: the inside of electrophoresis tank (1) flows the electrophoresis solution towards the position of filtering mechanism (4), and the electrophoresis solution flows into the inside of filtering cavity (9) after passing from the inside of relief hole (8), wash pipeline (13) and outside water purification after being connected with impurity that filters on filter screen (10) towards slag hole (11) punching out.
9. The process for the electrocoating of mechanical parts according to claim 5, characterized in that: the feeding mixing assembly (7) comprises a mixing tank (17) and an inclined plate (20), a plurality of diversion holes (21) are formed in the surface of the inclined plate (20), a conveying pipeline (15) is connected to the top of the circulating pump (6), a mixing pipeline (16) is connected to the top end of the conveying pipeline (15), and the side edge of the mixing pipeline (16) is connected with the mixing tank (17).
10. The process for the electrocoating of mechanical parts according to claim 9, characterized in that: the top of blending tank (17) is provided with diffuser plate (22), the top of diffuser plate (22) is connected with electrophoresis lacquer conveying pipeline (18), the bottom of blending tank (17) is connected with reposition of redundant personnel pipeline (19), reposition of redundant personnel pipeline (19) are passed from the inside of reposition of redundant personnel hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311295368.0A CN117305949A (en) | 2023-10-09 | 2023-10-09 | Electrophoretic coating process for mechanical parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311295368.0A CN117305949A (en) | 2023-10-09 | 2023-10-09 | Electrophoretic coating process for mechanical parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117305949A true CN117305949A (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311295368.0A Pending CN117305949A (en) | 2023-10-09 | 2023-10-09 | Electrophoretic coating process for mechanical parts |
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| Country | Link |
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| CN (1) | CN117305949A (en) |
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2023
- 2023-10-09 CN CN202311295368.0A patent/CN117305949A/en active Pending
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