CN111088514A - New energy automobile electrophoresis process, system and part product thereof - Google Patents
New energy automobile electrophoresis process, system and part product thereof Download PDFInfo
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- CN111088514A CN111088514A CN201911313553.1A CN201911313553A CN111088514A CN 111088514 A CN111088514 A CN 111088514A CN 201911313553 A CN201911313553 A CN 201911313553A CN 111088514 A CN111088514 A CN 111088514A
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- electrophoresis
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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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals 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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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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Abstract
The application discloses new energy automobile electrophoresis technology, system and spare part product thereof, in the embodiment of this application, through changing into ternary zinc system bonderizing mode, improve bonderizing crystal compactness and fineness to the environment in the adjustment electrophoresis processing makes the product durability that obtains higher.
Description
Technical Field
The application relates to the technical field of automobile part electrophoresis processing, in particular to a new energy automobile electrophoresis process, a new energy automobile electrophoresis system and a new energy automobile part product.
Background
Electrocoating is a special coating technique that is one of the most common methods for coating metal workpieces. The electrophoretic coating technology began from the research of applying anodic electrophoretic primer to automobiles by ford automobile company in 1959, and was built into the first generation electrophoretic coating device in 1963, and then, the electrophoretic process was developed rapidly.
The development of electrophoretic paint and coating technology in China has been over 30 years old, and in 1965, the research institute of Shanghai paint has successfully developed the anode electrophoretic paint; several automobile part anode electrophoresis coating lines have been built in the automobile industry in China by the 70 s. The first generation of anode electrophoretic coating is firstly developed successfully in 1979 by Wujizhao and is applied to military products to a certain extent; then, a large amount of cathode electrophoretic coatings are developed and researched in large and medium-sized paint manufacturing plants such as Shanghai paint institute, Lanzhou paint institute, Shenyang, Beijing, Tianjin and the like. In the period of six to five, the coating industry of China introduced the manufacturing technology and the coating technology of cathode electrophoretic coatings of factories from Japan, Austria and British. China successively introduces advanced coating technology and coating equipment from America, Germany, Italy and other countries. The first modern cathodic electrocoating line for producing automobile bodies was put into operation in Changchun monocar body factories in 1986, and then the cathodic electrocoating lines of Hubei Eryu and Jinan bodies were put into operation in succession. The situation of adopting cathode electrophoretic coating to replace anode electrophoretic coating is formed in the automobile industry in China, dozens of production lines are put into production in China by 1999, and only more than one hundred thousand cathode electrophoretic coating lines are also put into production before 2000 (for example, hundreds of tons of electrophoresis tank production lines of Changchun one-automobile public automobile company, Shanghai public automobile company, Beijing light automobile company, Tianjin Xiali automobile company, Shanghai Buick automobile company and the like). Cathodic electrophoretic paints have accounted for a large part of the automotive coating market, while anodic electrophoretic paints are active in many other fields. The anode electrophoretic paint is applied to truck frames, black paint parts in the trucks, other metal workpieces with lower corrosion resistance requirements and the like.
The existing electrophoresis technology is basically sunk into a bottleneck in technology, no special technology exists in parameter setting and material selection, and the products are basically the same among various factories and merchants under the general condition.
Disclosure of Invention
In order to solve the technical problem, the embodiment of the application provides a new energy automobile electrophoresis process, a new energy automobile electrophoresis system and a part product thereof.
The first aspect of the embodiment of the present application provides a new energy automobile electrophoresis process, which may include:
1) pre-degreasing a hot-dip galvanized material serving as a raw material, and spraying degreasing solution with the pH of 10< 11 for at least 0.5min at the temperature of 35-50 ℃;
2) carrying out main degreasing treatment on the pre-degreased parts, heating to 40-50 ℃, and soaking in 8-14ml of free alkali solution for at least 3 min; the free alkali solution is titrated and measured by H2SO4 with 0.1N concentration;
3) washing the surface of the galvanized material with water and controlling the pH value to be between 7.5 and 9.5 by using surface conditioning powder;
4) phosphating the galvanized material, washing with water again, and then soaking and washing in a pure water soaking tank, wherein the conductivity is lower than 30 mu s/cm;
5) carrying out electrophoresis processing on the galvanized material, wherein in the electrophoresis process, the voltage range is 180-220 v; the temperature is controlled to be 32-34 ℃, otherwise, the breakdown phenomenon is easy to generate;
and (3) spraying the electrophoretic zinc-plating material in UF1 and UF2, spraying and soaking the sprayed product in water, and controlling the pH value of the electrophoretic paint by using the anolyte.
Further, the surface pH of the galvanized material is controlled between 7.5 and 9 when the surface of the galvanized material is washed by water in the step 3).
Further, ternary zinc series phosphorization is selected in the phosphorization treatment in the step 4).
Further, in the phosphating treatment in the step 4), the total acid amount is 18-32ml, the free acid range is 1.2-2.0ml, methyl orange is used as an indicator, and 0.1N NaOH solution is used for titration; the concentration of the accelerator is 2.0-5.0ml, and the liquid temperature is controlled between 40-45 ℃.
Further, the electrophoretic processing in the step 5) includes:
and placing the product into an electrophoretic coating, wherein the temperature range of the bath solution of the electrophoretic coating is 32-34 ℃, the pH value of the electrophoretic coating is 5.5-6.6, and the solid content of the electrophoretic coating is 14-18%.
Further, the voltage in the step 5) is 200 +/-20V.
Further, in the step 5) electrophoresis process, the ratio of the cathode to the anode is not more than 1: 3.
The second aspect of the embodiment of the present application provides a new energy automobile electrophoresis system, including:
a degreasing unit, wherein due to the addition of a product of a galvanized material, the pH of a degreasing solution is kept at 10< pH <11 and the free alkali is 8-14ml at a preset temperature, a sulfuric acid standard solution with the concentration of 0.1N is used for titration, and phenolphthalein is used as an indicator;
the phosphating unit is used for performing surface adjustment on the degreased product and then performing phosphating treatment, wherein free acid is measured and titrated by adopting methyl orange or bromophenol blue as an indicator 0.1N NaOH, and the surface PH is kept neutral after the product is washed by water;
the electrophoresis unit is used for placing the phosphatized product into an electrophoresis tank and carrying out electrophoresis processing on the premise of weakly acidic electrophoresis liquid;
and the spraying cleaning unit is used for spraying the surface of the product after electrophoresis to obtain an electrophoresis product.
Further, in the electrophoresis unit, when the phosphatized product is subjected to electrophoresis, the ratio of the cathode to the anode is not more than 1:3 within the voltage range of 180-220 v.
The third aspect of the embodiment of the application provides a new energy automobile part product, which is produced based on the above process.
In the embodiment of the application, the compactness and the fineness of phosphorized crystals are improved by changing a ternary zinc system phosphorization mode, and the environment in electrophoretic processing is adjusted, so that the obtained product has higher durability.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the embodiments described below are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The new energy automobile electrophoresis process related in the application can comprise the following steps:
1) pre-degreasing a hot-dip galvanized material serving as a raw material, and spraying degreasing solution with the pH of 10< 11 for at least 0.5min at the temperature of 35-50 ℃;
2) carrying out main degreasing treatment on the pre-degreased solution, heating to 40-50 ℃, soaking in 8-14ml of free alkali solution for at least 3min, and carrying out titration measurement by using H2SO4 with the concentration of 0.1N;
3) washing the surface of the galvanized material with water and controlling the pH value to be between 7.5 and 9.5 by using surface conditioning powder;
in this embodiment, the surface PH of the zinc-plated material is controlled to be 7.5 to 9 when the surface of the zinc-plated material is washed with water.
4) And (3) selecting ternary zinc series phosphorization, carrying out phosphorization treatment on the galvanized material, washing with water again, and then carrying out a pure water immersion tank, wherein the conductivity is lower than 30 mu s/cm.
In the phosphating treatment, the total acid amount is 18-32ml, free acid is measured and titrated by adopting methyl orange or bromophenol blue as an indicator and 0.1N NaOH, the concentration of an accelerant is 2.0-5.0ml, and the liquid temperature is controlled between 40-45 ℃.
5) Carrying out electrophoresis processing on the galvanized material, wherein in the electrophoresis process, the voltage range is 180-220 v; and (3) spraying the electrophoretic galvanized material in UF1 and UF2, soaking the sprayed product in pure water, and controlling the surface pH value of the product by using an anolyte.
Specifically, the electrophoretic processing includes:
the product is placed in an electrophoretic coating, wherein the temperature range of bath solution of the electrophoretic coating is 32-34 ℃, the pH of the electrophoretic coating is 5.5-6.6, and the solid content of the electrophoretic coating is 14-18%.
The following specific parameter is the number of milliliters titrated with the indicator, each time referring to a measurement taken at the length of each interval in the present application.
The above tables relate to parameters associated with the previous process descriptions, and are presented in table form only to more clearly show the process parameters of the present disclosure.
The embodiment of the present application further provides a new energy automobile electrophoresis system, where the system is configured to perform any one of the electrophoresis methods described above, and the system specifically includes: degreasing unit 310, phosphating unit 320, electrophoresis unit 330 and spray cleaning unit 340.
In the degreasing unit 310, due to the addition of the product of the galvanized material, at a preset temperature, the PH of the degreasing solution is kept at 10< PH <11, the free alkali is 8-14ml, the degreasing solution is titrated by using a 0.1N sulfuric acid standard solution, and phenolphthalein is used as an indicator;
the phosphating unit 320 is configured to perform surface conditioning on the degreased product and then perform phosphating, wherein free acid is measured and titrated with methyl orange or bromophenol blue as an indicator 0.1N NaOH, and then the product is washed with water to keep the surface PH at neutral;
the electrophoresis unit 330 is configured to place the phosphated product in an electrophoresis tank, and perform electrophoresis processing on the condition of a weakly acidic electrophoresis solution;
the spraying cleaning unit 340 is configured to perform spraying treatment on the surface of the product after electrophoresis to obtain an electrophoresis product.
Different from the prior art, the material that the phosphorization unit of this system chose for use is ternary zinc system phosphorization liquid, in order to keep the effect of this liquid phosphorization, needs to carry out strict control to the environment.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the foregoing embodiments, and various equivalent changes (such as number, shape, position, etc.) may be made to the technical solution of the present invention within the technical spirit of the present invention, and the equivalents are protected by the present invention.
Claims (10)
1. The electrophoresis process of the new energy automobile is characterized by comprising the following steps of:
1) pre-degreasing a hot-dip galvanized material serving as a raw material, and spraying degreasing solution with the pH of 10< 11 for at least 0.5min at the temperature of 35-50 ℃;
2) carrying out main degreasing treatment on the pre-degreased parts, heating to 40-50 ℃, and soaking in 8-14ml of free alkali solution for at least 3 min; the free alkali solution is titrated and measured by H2SO4 with 0.1N concentration;
3) washing the surface of the galvanized material with water and controlling the pH value to be 7.5-9.5 by using surface conditioning powder;
4) phosphating the galvanized material, washing with water again, and then soaking and washing in a pure water soaking tank, wherein the conductivity is lower than 30 mu s/cm;
5) carrying out electrophoresis processing on the galvanized material, wherein in the electrophoresis process, the voltage range is 180-220 v; controlling the temperature at 32-34 ℃;
and (3) spraying the electrophoretic zinc-plating material in UF1 and UF2, spraying and soaking the sprayed product in water, and controlling the pH value of the electrophoretic paint by using the anolyte.
2. The electrophoresis process of the new energy automobile as claimed in claim 1, wherein the surface PH of the galvanized material is controlled to be 7.5-9 when the surface of the galvanized material is washed in step 3).
3. The new energy automobile electrophoresis process as claimed in claim 1, wherein ternary zinc-based phosphating is selected in the phosphating treatment in the step 4).
4. The new energy automobile electrophoresis process according to claim 1, wherein in the phosphating treatment in the step 4), the total acid amount is 18-32ml, the free acid range is 1.2-2.0ml, methyl orange is used as an indicator, and 0.1N NaOH solution is used for titration; the concentration of the accelerator is 2.0-5.0ml, and the liquid temperature is controlled between 40-45 ℃.
5. The new energy automobile electrophoresis process according to claim 1, wherein the electrophoresis processing in the step 5) comprises:
and placing the product into an electrophoretic coating, wherein the temperature range of the bath solution of the electrophoretic coating is 32-34 ℃, the pH value of the electrophoretic coating is 5.5-6.6, and the solid content of the electrophoretic coating is 14-18%.
6. The electrophoresis process of the new energy automobile as claimed in claim 1, wherein the voltage in the step 5) is 200 ± 20V.
7. The new energy automobile electrophoresis process according to claim 1, wherein in the step 5) electrophoresis process, the ratio of the cathode to the anode is not more than 1: 3.
8. The utility model provides a new energy automobile electrophoresis system which characterized in that includes:
a degreasing unit, wherein due to the addition of a product of a galvanized material, the pH of a degreasing solution is kept at 10< pH <11 and the free alkali is 8-14ml at a preset temperature, a sulfuric acid standard solution with the concentration of 0.1N is used for titration, and phenolphthalein is used as an indicator;
the phosphating unit is used for performing surface adjustment on the degreased product and then performing phosphating treatment, wherein free acid is measured and titrated by adopting methyl orange or bromophenol blue as an indicator 0.1N NaOH, and the surface PH is kept neutral after the product is washed by water;
the electrophoresis unit is used for placing the phosphatized product into an electrophoresis tank and carrying out electrophoresis processing on the premise of weakly acidic electrophoresis liquid;
and the spraying cleaning unit is used for spraying the surface of the product after electrophoresis to obtain an electrophoresis product.
9. The new energy automobile electrophoresis system as claimed in claim 8, wherein in the electrophoresis unit, when the product after phosphorization is subjected to electrophoresis, the ratio of the cathode to the anode is not more than 1:3 within a voltage range of 180-220 v.
10. A new energy automobile part product produced based on the process of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911313553.1A CN111088514A (en) | 2019-12-19 | 2019-12-19 | New energy automobile electrophoresis process, system and part product thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911313553.1A CN111088514A (en) | 2019-12-19 | 2019-12-19 | New energy automobile electrophoresis process, system and part product thereof |
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| CN111088514A true CN111088514A (en) | 2020-05-01 |
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| CN201911313553.1A Pending CN111088514A (en) | 2019-12-19 | 2019-12-19 | New energy automobile electrophoresis process, system and part product thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945209A (en) * | 2020-08-10 | 2020-11-17 | 扬州市景杨表面工程有限公司 | Cathode black electrophoresis method for automobile parts |
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| CN104694996A (en) * | 2015-02-13 | 2015-06-10 | 柳州五菱汽车有限责任公司 | Electrophoresis pretreatment process for vehicle parts |
| CN105369326A (en) * | 2015-09-28 | 2016-03-02 | 合肥常菱汽车零部件有限公司 | Surface treatment process before automobile part cathode electrophoretic coating |
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2019
- 2019-12-19 CN CN201911313553.1A patent/CN111088514A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694996A (en) * | 2015-02-13 | 2015-06-10 | 柳州五菱汽车有限责任公司 | Electrophoresis pretreatment process for vehicle parts |
| CN105369326A (en) * | 2015-09-28 | 2016-03-02 | 合肥常菱汽车零部件有限公司 | Surface treatment process before automobile part cathode electrophoretic coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945209A (en) * | 2020-08-10 | 2020-11-17 | 扬州市景杨表面工程有限公司 | Cathode black electrophoresis method for automobile parts |
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Application publication date: 20200501 |
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