CN111270289A - Electrophoretic paint coloring process - Google Patents
Electrophoretic paint coloring process Download PDFInfo
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- CN111270289A CN111270289A CN202010308246.0A CN202010308246A CN111270289A CN 111270289 A CN111270289 A CN 111270289A CN 202010308246 A CN202010308246 A CN 202010308246A CN 111270289 A CN111270289 A CN 111270289A
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- electrophoresis
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- electrophoretic paint
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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
- C25D13/00—Electrophoretic coating characterised by the process
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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
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
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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
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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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)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to an electrophoretic paint coloring process, which relates to the technical field of electrophoretic paint coloring and comprises a front processing step, an electrophoretic processing step and a rear processing step; the former processing step comprises: s1: hanging materials: hanging a workpiece to be processed on a hanging frame; s2: ultrasonic cleaning: cleaning the surface of a workpiece to be treated by ultrasonic waves to obtain a primary cleaning piece; the electrophoresis treatment comprises the following steps: s3: putting the primary cleaning piece into an electrophoresis tank for electrophoresis to obtain a semi-finished piece, and keeping the work piece standing in the electrophoresis process; the post-treatment comprises the following steps: s4: drying: drying the surface of the semi-finished product by utilizing hot air to obtain a finished product; during operation, a workpiece is hung on the hanging frame, and then ultrasonic cleaning, electrophoresis and drying are sequentially carried out on the surface of the workpiece. The invention has the advantages of flexibility, energy saving and environmental protection.
Description
Technical Field
The invention relates to the technical field of electrophoretic paint coloring, in particular to an electrophoretic paint coloring process.
Background
In the workpiece treatment process, a layer of paint is required to be plated on the surface of a part of workpiece, so that the attractiveness of the workpiece can be improved, the surface of the workpiece can be protected, and the condition that the quality of the workpiece is damaged due to the fact that the surface of the workpiece is slowly oxidized due to long-term contact with air is avoided.
Chinese patent No. CN106835243A discloses an automobile electrophoresis process, which comprises the steps of loading, degreasing, derusting, washing, phosphating, pure water immersion washing, electrophoresis, ultra-filtration water spraying, pure water immersion washing, drying and unloading.
In the prior art, an electrophoresis tank and other processing tanks are usually dozens of meters long, during electrophoresis, a plurality of workpieces slide in the electrophoresis tank along with a crown block rail, and when the workpieces are placed in the electrophoresis tank, the workpieces gradually dip into the electrophoresis tank along with the forward sliding of the crown block rail.
The above prior art solutions have the following drawbacks: in the above treatment mode, the workpiece is conveyed by using a crown block, and the cleaning workpiece is cleaned by using strong acid, so that the following problems are solved: 1. the surface of a workpiece is pretreated by strong acid, so that environmental pollution is caused; 2. the crown block is kept in an operating state in the operating process, so that the lengths of various tanks for degreasing, phosphorization, electrophoresis and the like are required to be long enough to ensure that the operation time of parts in each tank is enough, the occupied area of the tank is large due to the mode, the amount of solution contained in the tank is too large, and the energy required for heating or circulating the tank is increased when the amount of the solution is too large; 3. the overhead travelling crane is kept running, so if part of products have flaws in the processing process, the overhead travelling crane can be unloaded after all the processes are finished, and the flexibility in operation is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electrophoretic paint coloring process which has the effects of energy conservation, environmental protection and flexibility.
The above object of the present invention is achieved by the following technical solutions:
an electrophoretic paint coloring process comprises a previous processing step, an electrophoretic processing step and a subsequent processing step;
the former processing step comprises:
s1: hanging materials: hanging a workpiece to be processed on a hanging frame;
s2: ultrasonic cleaning: cleaning the surface of a workpiece to be treated by ultrasonic waves to obtain a primary cleaning piece;
the electrophoresis treatment comprises the following steps:
s3: putting the primary cleaning piece into an electrophoresis tank for electrophoresis to obtain a semi-finished piece, and keeping the work piece standing in the electrophoresis process;
the post-treatment comprises the following steps:
s4: drying: and drying the surface of the semi-finished product by utilizing hot air to obtain a finished product.
By adopting the technical scheme, during operation, a workpiece is firstly hung on the hanging frame, and then the workpiece is sequentially subjected to front processing, electrophoresis processing and rear processing; during the previous treatment, the workpiece is hung on the hanging frame, ultrasonic cleaning is carried out on the workpiece after the workpiece is hung, impurities on the surface of the workpiece are shaken off by utilizing the propagation characteristic of ultrasonic waves in water when the workpiece is subjected to ultrasonic cleaning, and by adopting the operation mode, the impurities on the surface of the workpiece can be removed without using strong acid, strong alkali and other materials with high pollution, so that the environment is not polluted, and the environment-friendly effect is high; when carrying out the electrophoresis to the work piece, place the work piece in the electrophoresis tank for the work piece keeps stewing, and it has avoided traditional handicraft to adopt the work piece to slide speed control in the electrophoresis tank and is long to the electrophoresis of work piece, has effectively shortened the length of electrophoresis cell, and the electrophoresis lacquer has reduced the energy consumption at to a great extent at the in-process of heating or circulation in its electrophoresis cell.
In the traditional process, a plurality of workpieces slide in an electrophoresis cell along with a crown block synchronously, when any one workpiece is treated to have a problem, the workpiece cannot be removed from the crown block in time, and when the process is adopted, when any one workpiece has the problem, the workpiece can be taken out in time, and other workpieces can be placed into an electrophoresis cell for electrophoresis after the workpiece is taken out, so that the flexibility is higher; when the surface of a workpiece is colored, because different products have different requirements on the components and the proportion of the electrophoretic paint, in the traditional process line body, if parts are fewer, a large line is opened, so that economic cost waste is easily caused, and the production cost is extremely high for manufacturers; and drying the workpiece after the electrophoresis of the workpiece is finished.
The present invention in a preferred example may be further configured to: s2 is carried out in an ultrasonic cleaning pool, and an environment-friendly cleaning agent is also added in the ultrasonic cleaning pool.
Through adopting above-mentioned technical scheme, add the environmental protection sanitizer in the ultrasonic cleaning pool, can make the ultrasonic wave further get rid of the impurity on workpiece surface totally at the operation in-process, the environmental protection cleaner has higher environmental protection effect.
The present invention in a preferred example may be further configured to: the former treatment also comprises a spraying and rinsing process;
the spraying process comprises the steps of spraying and cleaning the surface of the primary cleaning piece by using water to obtain a secondary cleaning piece;
and the rinsing process comprises rinsing the surface of the secondary cleaning piece to obtain a tertiary cleaning piece, and performing electrophoresis treatment on the tertiary cleaning piece.
By adopting the technical scheme, after the workpiece is subjected to ultrasonic cleaning, the surface of the workpiece is sprayed, cleaned and rinsed, so that the surface of the workpiece can be further cleaned more cleanly, attachments on the surface of the workpiece are reduced, and the coloring effect on the workpiece can be further improved.
The present invention in a preferred example may be further configured to: the former treatment also comprises the processes of phosphorization and dephosphorization;
the phosphorization process is carried out in a water tank, phosphorization liquid is also added into the water tank, and the phosphorization process comprises the steps of putting the three-time cleaning piece into water containing the phosphorization liquid to remove an oxidation film on the surface of the workpiece, so as to obtain the four-time cleaning piece;
the dephosphorization process is carried out in a water tank, a dephosphorization agent is added into the water tank, the dephosphorization process comprises the steps of putting the four-time cleaning piece into water containing the dephosphorization agent to remove phosphorus on the surface of a workpiece to obtain five-time cleaning piece, and carrying out electrophoresis treatment on the five-time cleaning piece.
By adopting the technical scheme, after the impurities on the surface of the workpiece are cleaned, the oxide film on the surface of the workpiece is removed to further facilitate the coloring of the workpiece, and when the oxide film on the surface of the workpiece is removed, the phosphating solution reacts with the oxide film on the surface of the workpiece to remove the oxide film on the surface of the workpiece; and then the phosphorus removing agent is utilized to clean the residual phosphorus on the surface of the workpiece, so that the surface of the workpiece can be thoroughly cleaned, and the coloring effect on the workpiece can be further improved.
The present invention in a preferred example may be further configured to: when the electrophoresis treatment is carried out on the five-time cleaning piece, the five-time cleaning piece is placed into the electrophoresis tank, then low-voltage current is applied to the electrophoresis tank, then high-voltage current is applied to the electrophoresis tank to obtain a semi-finished product piece, and the semi-finished product piece is taken out after the electrophoresis tank is powered off.
By adopting the technical scheme, when the workpiece is subjected to electrophoresis, in the traditional process, the workpiece is gradually and slowly immersed into the electrophoresis cell along with the crown block, the workpiece in the electrophoresis cell is firstly colored for a longer time, and then colored for a shorter time, so that the electrophoretic paint is uneven when attached to the surface of the workpiece; meanwhile, after any workpiece is treated, the power on/off of the electrophoresis cell can be carried out at any time, the processing of other workpieces in other operation processes is not influenced, the energy consumption can be saved, and the characteristic of flexibility of the process is embodied.
The present invention in a preferred example may be further configured to: recycling electrophoretic paint; and (4) draining the electrophoretic paint on the surface of the semi-finished product, recovering the vacated electrophoretic paint to obtain a piece to be dried, and drying the piece to be dried.
Through adopting above-mentioned technical scheme, after the electrophoresis to the work piece, drip the unnecessary electrophoresis lacquer in semi-manufactured goods piece surface and dry to retrieve the electrophoresis lacquer that drips, thereby can reach energy-conserving effect.
The present invention in a preferred example may be further configured to: and (4) inspecting each workpiece in the previous processing, the electrophoresis processing and the subsequent processing, removing unqualified products, and performing the next processing on qualified products.
By adopting the technical scheme, in the processing process, the workpiece after each process is detected, if unqualified products exist, the unqualified products are removed, and after the unqualified products are removed, the unqualified products can be prevented from being continuously processed, so that the working efficiency can be improved, and useless energy consumption can be avoided.
The present invention in a preferred example may be further configured to: and the material hanging rack is picked and placed by the conveying assembly in the previous processing, the electrophoresis processing and the subsequent processing.
Through adopting above-mentioned technical scheme, when transporting the work piece in different processes, get by carrying the piece and put hanging the material frame, when carrying out a process with arbitrary group's string frame and handling, can carry other work pieces to carry out the processing of other processes, its operating efficiency is higher and have the characteristics of exciting the flexibility.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the surface of the workpiece is cleaned by matching ultrasonic waves with the environment-friendly cleaning agent, so that the environment is not polluted, and the environment-friendly cleaning agent has the beneficial effect of environmental protection;
2. the workpiece is gradually slid into the electrophoresis tank by the traditional mode of sliding along a crown block, and the workpiece is changed into standing in the electrophoresis tank, so that the production concept of the traditional production line is completely overturned, the length of the electrophoresis tank is effectively shortened, and the length of other treatment tanks is shortened, so that the energy consumption of the solution in each treatment tank in the circulating or heating process is greatly reduced, and the energy consumption can be effectively reduced by adopting the electrophoresis tank to color the workpiece;
3. after the workpieces are placed in the electrophoresis tank, the conveying assembly can convey other workpieces to other positions for processing other procedures by utilizing the processing time of the workpieces in the electrophoresis tank, so that the production efficiency can be effectively improved; meanwhile, when a workpiece has a problem in a certain processing process, the conveying assembly can timely remove the group of workpieces from the production line body, so that the defect that the whole line body cannot be started and stopped at any time in the traditional line body is avoided, and the flexibility of the machine in the production process is effectively highlighted;
4. when the workpiece is colored by adopting the invention, different processes can be customized according to different products, and the electrophoresis cell can be adjusted in time according to different requirements of different workpieces on electrophoresis duration and electrophoresis concentration, so that the advantage of flexibility is effectively highlighted in the whole production process; meanwhile, because the capacity of each treatment tank is smaller, the energy consumption for replacing the solution in each treatment tank is greatly reduced when different products are replaced;
5. the whole production line changes the traditional way that a plurality of groups of workpieces control the electrophoresis time in the electrophoresis tank by means of the sliding speed in the running process into the operation way of the invention, can carry out directional and quantitative treatment on each group of workpieces, and effectively realizes the design concept of breaking whole parts into parts and breaking whole parts into whole parts.
Detailed Description
The present invention will be described in further detail below.
The invention discloses an electrophoretic paint coloring process, which comprises the following steps: the material hanging rack is placed and taken by the conveying assembly in the previous processing, the electrophoresis processing and the subsequent processing, the conveying assembly comprises a travelling crane capable of sliding along the processing sequence and an electric hoist crane installed on the travelling crane, and the electric hoist crane is detachably connected with the material hanging rack.
And (3) inspecting each workpiece in the previous treatment, the electrophoresis treatment and the subsequent treatment, rejecting unqualified products, conveying the electric hoist to the unqualified products by the travelling crane when rejecting the unqualified products, hoisting the unqualified products by the electric hoist, rejecting the unqualified products from the production line by the travelling crane, and processing qualified products in the next step.
The front-end treatment comprises the following steps:
s1: hanging materials: hanging a workpiece to be processed on a hanging frame;
s2: ultrasonic cleaning: cleaning the surface of a workpiece to be treated by ultrasonic waves to obtain a primary cleaning piece; the ultrasonic cleaning process is carried out in an ultrasonic cleaning tank, water is contained in the ultrasonic cleaning tank, and meanwhile, an environment-friendly cleaning agent is added in the ultrasonic cleaning tank;
the former treatment also comprises the processes of spraying, rinsing, phosphorization and dephosphorization;
the spraying process comprises the steps of spraying and cleaning the surface of the primary cleaning piece by using water to obtain a secondary cleaning piece; cleaning impurities on the surface of a workpiece to be treated by ultrasonic waves, and then spraying and washing the surface of the primary cleaning piece by using a spray head, wherein the impurities remained on the surface of the primary cleaning piece can be knocked down by using the impact force of water in the spraying and washing process, so that a secondary cleaning piece is obtained;
the rinsing process comprises rinsing the surface of the secondary cleaning piece to obtain a tertiary cleaning piece; placing the secondary cleaning piece obtained after spraying into a cleaning pool, wherein water is contained in the cleaning pool, and then shaking the secondary cleaning piece up and down in the cleaning pool for 4 times, so that impurities remained on the surface of the secondary cleaning piece can be further cleaned up, and a tertiary cleaning piece is obtained;
the phosphating process is carried out in a water tank, phosphating solution is also added into the water tank, the phosphating solution in the embodiment is JF-118 phosphating solution which is purchased from Xian Youlii metal surface treatment technology Co., Ltd, the soaking time is 3-5min, the soaking time in the embodiment is 4min, and the phosphating process comprises the steps of putting a three-time cleaning piece into water containing the phosphating solution to remove an oxidation film on the surface of a workpiece to obtain a four-time cleaning piece;
the dephosphorization process is carried out in a water tank, a dephosphorization agent is added into the water tank, the dephosphorization process comprises the step of putting the cleaning piece for four times into water containing the dephosphorization agent to remove phosphorus on the surface of the workpiece, and the cleaning time is 5min, so that the cleaning piece for five times is obtained.
The electrophoresis treatment comprises the following steps:
s3: putting the five cleaning pieces into an electrophoresis tank for electrophoresis to obtain a semi-finished product, and keeping the five cleaning pieces standing in the electrophoresis process; the electrophoresis process is carried out in an electrophoresis tank, after the front treatment of the workpiece is finished, the travelling crane conveys the material hanging rack to the position above the electrophoresis tank, then the electric hoist crane vertically puts the material hanging rack into the electrophoresis tank for electrophoresis, and after the material hanging rack is put into the electrophoresis tank, the electric hoist loosens the material hanging rack and conveys other material hanging racks; when the five cleaning pieces are subjected to electrophoresis treatment, after the five cleaning pieces are placed into an electrophoresis tank, 30V low-voltage current is applied to the electrophoresis tank for 5min, 110V high-voltage current is applied for 5min to obtain a semi-finished product, after electrophoresis is finished, the electrophoresis tank is powered off, and then the semi-finished product is taken out;
during the electrophoresis process, water, color paste, resin and an auxiliary agent are added into the electrophoresis cell, wherein the proportions of the water, the color paste, the resin and the auxiliary agent are respectively 49.9%, 40%, 10% and 0.1%, and the auxiliary agent can be added in a proper amount according to the consumption degree; the color paste comprises the following components in percentage by weight: 6.5% of ethylene glycol butyl ether, 0.5% of glacial acetic acid, 25% of Foliumligustri, 5% of carbon black, 19% of amino epoxy resin and 44% of pure water; wherein the resin comprises the following components in percentage by weight: 36 percent of amino epoxy resin, 3 percent of ethylene glycol butyl ether, 0.3 percent of propylene glycol monophenyl ether, 0.9 percent of methyl isobutyl ketone, 0.8 percent of glacial acetic acid and 59 percent of pure water; the auxiliary agent comprises the following components in percentage by weight: 81% of ethylene glycol butyl ether, 7% of dipropylene glycol butyl ether, 7% of propylene glycol phenyl ether and 5% of epoxy resin;
the electrophoretic treatment also comprises electrophoretic paint recovery: and taking the semi-finished workpiece out of the electrophoresis tank, draining the electrophoretic paint on the surface of the semi-finished workpiece for 5min, and recovering the vacated electrophoretic paint to obtain a workpiece to be dried.
The post-treatment comprises the following steps:
s4: drying: drying the surface of the semi-finished product by utilizing hot air to obtain a finished product; when the semi-finished product piece is dried, the semi-finished product piece is placed in a drying box, the workpiece can be dried by utilizing the high temperature in the drying box, the drying temperature is 220 ℃, the drying time is 45min, and the workpiece is taken out of the drying box after drying is finished to obtain the finished product piece.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. An electrophoretic paint coloring process is characterized in that: comprises a front processing step, an electrophoresis processing step and a back processing step;
the former processing step comprises:
s1: hanging materials: hanging a workpiece to be processed on a hanging frame;
s2: ultrasonic cleaning: cleaning the surface of a workpiece to be treated by ultrasonic waves to obtain a primary cleaning piece;
the electrophoresis treatment comprises the following steps:
s3: putting the primary cleaning piece into an electrophoresis tank for electrophoresis to obtain a semi-finished piece, and keeping the work piece standing in the electrophoresis process;
the post-treatment comprises the following steps:
s4: drying: and drying the surface of the semi-finished product by utilizing hot air to obtain a finished product.
2. The electrophoretic paint coloring process according to claim 1, wherein: s2 is carried out in an ultrasonic cleaning pool, and an environment-friendly cleaning agent is also added in the ultrasonic cleaning pool.
3. The electrophoretic paint coloring process according to claim 1, wherein: the former treatment also comprises a spraying and rinsing process;
the spraying process comprises the steps of spraying and cleaning the surface of the primary cleaning piece by using water to obtain a secondary cleaning piece;
and the rinsing process comprises rinsing the surface of the secondary cleaning piece to obtain a tertiary cleaning piece, and performing electrophoresis treatment on the tertiary cleaning piece.
4. The electrophoretic paint coloring process according to claim 1, wherein: the former treatment also comprises the processes of phosphorization and dephosphorization;
the phosphorization process is carried out in a water tank, phosphorization liquid is also added into the water tank, and the phosphorization process comprises the steps of putting the three-time cleaning piece into water containing the phosphorization liquid to remove an oxidation film on the surface of the workpiece, so as to obtain the four-time cleaning piece;
the dephosphorization process is carried out in a water tank, a dephosphorization agent is added into the water tank, the dephosphorization process comprises the steps of putting the four-time cleaning piece into water containing the dephosphorization agent to remove phosphorus on the surface of a workpiece to obtain five-time cleaning piece, and carrying out electrophoresis treatment on the five-time cleaning piece.
5. The electrophoretic paint coloring process according to claim 1, wherein: when the electrophoresis treatment is carried out on the five-time cleaning piece, the five-time cleaning piece is placed into the electrophoresis tank, then low-voltage current is applied to the electrophoresis tank, then high-voltage current is applied to the electrophoresis tank to obtain a semi-finished product piece, and the semi-finished product piece is taken out after the electrophoresis tank is powered off.
6. The electrophoretic paint coloring process according to claim 1, wherein: the electrophoretic processing further includes: recycling electrophoretic paint; and (4) draining the electrophoretic paint on the surface of the semi-finished product, recovering the vacated electrophoretic paint to obtain a piece to be dried, and drying the piece to be dried.
7. The electrophoretic paint coloring process according to claim 1, wherein: and (4) inspecting each workpiece in the previous processing, the electrophoresis processing and the subsequent processing, removing unqualified products, and performing the next processing on qualified products.
8. The electrophoretic paint coloring process according to claim 1, wherein: and the material hanging rack is picked and placed by the conveying assembly in the previous processing, the electrophoresis processing and the subsequent processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308246.0A CN111270289A (en) | 2020-04-18 | 2020-04-18 | Electrophoretic paint coloring process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010308246.0A CN111270289A (en) | 2020-04-18 | 2020-04-18 | Electrophoretic paint coloring process |
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| CN111270289A true CN111270289A (en) | 2020-06-12 |
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| CN202010308246.0A Pending CN111270289A (en) | 2020-04-18 | 2020-04-18 | Electrophoretic paint coloring process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175468A (en) * | 2020-10-26 | 2021-01-05 | 厦门市金宝源实业有限公司 | Electrophoretic paint, preparation method and coating process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203700563U (en) * | 2013-12-28 | 2014-07-09 | 广西柳拖车辆有限公司 | Integral electrophoresis production line for cab |
| CN103966645A (en) * | 2014-05-07 | 2014-08-06 | 喜科金属（昆山）有限公司 | Stepping electrophoresis line production technology |
| CN105369325A (en) * | 2015-09-28 | 2016-03-02 | 合肥常菱汽车零部件有限公司 | Novel automobile part electrophoresis process |
| CN110541172A (en) * | 2019-08-30 | 2019-12-06 | 合肥通快钣金科技有限公司 | Novel sheet metal part machining process |
-
2020
- 2020-04-18 CN CN202010308246.0A patent/CN111270289A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203700563U (en) * | 2013-12-28 | 2014-07-09 | 广西柳拖车辆有限公司 | Integral electrophoresis production line for cab |
| CN103966645A (en) * | 2014-05-07 | 2014-08-06 | 喜科金属（昆山）有限公司 | Stepping electrophoresis line production technology |
| CN105369325A (en) * | 2015-09-28 | 2016-03-02 | 合肥常菱汽车零部件有限公司 | Novel automobile part electrophoresis process |
| CN110541172A (en) * | 2019-08-30 | 2019-12-06 | 合肥通快钣金科技有限公司 | Novel sheet metal part machining process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175468A (en) * | 2020-10-26 | 2021-01-05 | 厦门市金宝源实业有限公司 | Electrophoretic paint, preparation method and coating process thereof |
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