CN109675777A - A kind of plating spraying process of rose golden - Google Patents
A kind of plating spraying process of rose golden Download PDFInfo
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- CN109675777A CN109675777A CN201910003425.0A CN201910003425A CN109675777A CN 109675777 A CN109675777 A CN 109675777A CN 201910003425 A CN201910003425 A CN 201910003425A CN 109675777 A CN109675777 A CN 109675777A
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- rose
- spraying process
- plating
- plating spraying
- finishing coat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/061—Special surface effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2320/00—Organic additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a kind of plating spraying process of rose golden, realize the compatible cooperation of plating and spray painting, the product appearance after processing not only has strong metal-like, but also color can diversification.Finishing coat after plating has excellent performance, and stability is strong.Meanwhile process of the invention, rejection rate is low, good in economic efficiency.
Description
Technical field
The present invention relates to surface treatment methods, and in particular to a kind of plating spraying process of rose golden.
Background technique
Automobile, as a part of people's daily life, with increasingly progressing greatly for life, cognition and need of the people to automobile
It asks and is also constantly occurring change, and color, it is often that consumer to be pursued unique and individual character embodiment again.Rose gold,
Lovely luster, tone is soft, has fabulous decorative effect, is that fashion personage extremely chases after high style.
Automotive upholstery product all only has common plastic cement, plating and several processing technologys of spray painting, product appearance all the time
Color is relatively simple, and common plastic parts appearance can only show the color of plastics itself, although available rich by addition toner
Rich appearance color, but it is difficult the metallic surface effect for having strong；And electroplating technology enables that workpiece surface is allowed to reach complete gold
Belong to effect, but workpiece surface can only also be made to show the color (generally mute chromium) of metal itself, cannot reach both had outside metal
See the effect of various colors again；Directly spray painting be can by added in coating metal powder and mill base come or it is colourful
Metal effect, but because lacquer spraying technique prevents the arrangement of metal powder in coating to cause product surface metal sense not strong from consistent.
There is more improvement for the processing technology of automobile decoration piece in the prior art.For example, by using plasma spraying,
Tradition plating is replaced in CN102140624A " imitation electroplating processing method of exterior trimming parts for automobile " in the way of magnetron sputtering depositing coating,
Make automobile exterior trimming parts surface with metallic luster and there is good corrosion resistance, but the technics comparing is complicated, technique item
Part is stringent, and required equipment essence is expensive.Also have through the traditional electroplating technique of multiple coating substitution, however the work that the technique is prepared
Part appearance metal sense is not strong.
Therefore, metal sense existing for the colouring processing technology for traditional rose golden is poor, tone is single, stability is poor
The problem of, the plating spraying process for developing a kind of rose golden is necessary.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of plating spraying process of rose golden.
The technical solution used in the present invention is:
A kind of plating spraying process of rose golden, comprising the following steps:
S1: next plastic workpiece progress will be molded by according to the process of sour copper, semi-gloss nickel, pearl nickel, microporous nickel and light chromium
Electroplating processes are carried out, plated item is obtained；
S2: plated item is subjected to cleaning treatment；
S3: in workpiece surface spraying transparent priming, carrying out the flash distillation of priming paint, toasts, cooling, and clean process processing obtains
To the workpiece with transparent priming；
S4: in the workpiece surface spraying rose gold finishing coat with transparent priming, carrying out the flash distillation of finishing coat, toasts, cooling.
The further improvement of plating spraying process as a kind of above-mentioned rose golden, the control of electroplating processes each process in S1
Condition processed are as follows:
1) sour copper: current density is 4~6ASD, and electroplating time is 23~27min；
2) semi-gloss nickel: current density is 1~3ASD, and electroplating time is 14~18min；
3) pearl nickel: current density is 3~5ASD, and electroplating time is 7~9min；
4) microporous nickel: current density is 0.5~2.5ASD, and electroplating time is 1.5~2.5min；
5) light chromium: current density is 16~17ASD, and electroplating time is 3.5~4.5min.
As a kind of above-mentioned further improvement of the plating spraying process of rose golden, the method for cleaning treatment is dry in S2
Ice cleaning treatment and electrostatic precipitation processes.
As a kind of above-mentioned further improvement of the plating spraying process of rose golden, the flash temperature of priming paint is 20 in S3
~30 DEG C, flash-off time is 16~20min.
As a kind of above-mentioned further improvement of the plating spraying process of rose golden, the baking temperature of priming paint is 80 in S3
~85 DEG C, baking time is 30~35min.
As a kind of above-mentioned further improvement of the plating spraying process of rose golden, the flash temperature of finishing coat is 25 in S4
~35 DEG C, flash-off time is 14~18min；Baking temperature is 80~85 DEG C, and baking time is 30~35min.
The further improvement of plating spraying process as a kind of above-mentioned rose golden, rose gold finishing coat at sub-prime in S4
Amount proportion is host agent: sustained release agent: curing agent=4:1:1.5.
Wherein, host agent comprises the following raw materials by weight percent: acrylic resin 30~35%, toluene 44~45%,
Ethyl acetate 5~10%, solvent 10~20%；Diluent comprises the following raw materials by weight percent: n-butyl acetate 20~
25%, ethyl cellosolve acetate 20~25%, methyl iso-butyl ketone (MIBK) 20~25%, dimethylbenzene 10~15%, ethyl solvent 10
~15%；Curing agent comprises the following raw materials by weight percent: poly- diisocyanate 15~20%, toluene 35~40%, second
Acetoacetic ester 35~40%, dimethylbenzene 1~5%, 2- methoxy ethyl ester 1~5%.
The beneficial effects of the present invention are:
The plating spraying process of rose golden of the invention realizes the compatible cooperation of plating and spray painting, the production after processing
Product appearance not only has strong metal-like, but also color can diversification.Finishing coat after plating has excellent performance, stablizes
Property is strong.Meanwhile process of the invention, rejection rate is low, good in economic efficiency.
Detailed description of the invention
Fig. 1 is the workpiece effect picture using rose gold oil spout technique after the plating of the application.
Specific embodiment
The present invention is described further combined with specific embodiments below:
Embodiment 1
In the embodiment of the present invention, a kind of plating spraying process of rose golden, including the following steps:
S1: next plastic workpiece progress will be molded by according to the process of sour copper, semi-gloss nickel, pearl nickel, microporous nickel and light chromium
Electroplating processes are carried out, plated item, the control condition of each process are obtained are as follows:
1) sour copper (main agents are copper sulphate, sulfuric acid): current density 5ASD, electroplating time 25min；
2) semi-gloss nickel (main agents are nickel sulfate, nickel chloride, boric acid): current density 2ASD, electroplating time are
16min；
3) pearl nickel (main agents are nickel sulfate, nickel chloride, boric acid): current density 4ASD, electroplating time 8min；
4) microporous nickel (main agents are nickel sulfate, nickel chloride, boric acid): current density 1.5ASD, electroplating time are
2min；
5) light chromium (main agents are chromic anhydride): current density 16.7ASD, electroplating time 4min；
S2: plated item is preheated on fixtures for painting, carries out dry ice cleaning treatment and electrostatic precipitation processes；
S3: spraying transparent priming on clean plated item surface, carry out the flash distillation of priming paint, toast, cooling, clean work
Sequence processing, obtains the workpiece with transparent priming, wherein flash temperature is 26 DEG C, and flash-off time is 18min, and baking temperature is
83 DEG C, baking time 33min, cooling temperature be 30 DEG C, cooling time 13min, cleaning mode be electrostatic precipitation clean,；
S4: in the workpiece surface spraying rose gold finishing coat with transparent priming, carrying out the flash distillation of finishing coat, toasts, cooling,
In, flash temperature is 27 DEG C, flash-off time 17min, and baking temperature is 83 DEG C, baking time 32min, cooling temperature 30
DEG C, cooling time 20min.The composition quality proportion of rose gold finishing coat is host agent: sustained release agent: curing agent=4:1:1.5,
In, host agent comprises the following raw materials by weight percent: acrylic resin 32.6%, toluene 44.4%, ethyl acetate 8%, nothing
Water-ethanol is as solvent 15%；Diluent comprises the following raw materials by weight percent: n-butyl acetate 25%, ethylene glycol ethyl ether
Acetic acid esters 24%, methyl iso-butyl ketone (MIBK) 24%, dimethylbenzene 13%, ethyl solvent (being selected as ethyl cellulose) 14%；Curing agent
Comprise the following raw materials by weight percent: poly- diisocyanate 18%, toluene 37%, ethyl acetate 38%, dimethylbenzene 3%,
2- methoxy ethyl ester 4%.
In electroplating processes, the process for influencing the most critical of oil spout rose gold color plating is pearl nickel.In pearl nickel electricity
In depositing process, the plating solution composition and its additive amount selected be 0.6% pearl nickel P1,1.5% pearl nickel P2 and 0.019%
Pearl nickel AF-6.Plating solution is purchased from Atotech (ATOTECH) Chemical Co., Ltd..
In spray treatment, it is roasting that the mode of the mode or thermal spraying be electrostatically sprayed carries out 2 paintings 2, i.e., priming paint, baking,
Finishing coat, baking.Uniform thickness is sprayed in plastic cement region, forms protective coating.In the present embodiment, priming paint uses viscosity for 8.5S
(applying -4 glasss of standards), the coating for being filtered into 400 mesh is sprayed with oiliness curing agent with the paint that the ratio of 40:1 is formed
It applies, the thickness that coating is 11 ± 3 μm；Finishing coat uses viscosity for 13.5S (applying -4 glasss of standards), is filtered into the coating of 350 mesh, with oil
Property curing agent be mixed to form paint and sprayed, the thickness that coating is 30 ± 5 μm.
Through the above steps, required product, i.e., the plastic workpiece after plating of the invention after rose gold oil spout are obtained.Workpiece
Effect picture is as shown in Figure 1.The plastic workpiece known to range estimation has high metallic texture and has rose gold color.
Comparative example 1
The present embodiment is only with Shooting Technique same as Example 1, injection molding resin material and processing step and reality
It is identical to apply example 1.
The plastic workpiece that the present embodiment obtains only has plastic workpiece performance itself, and color is single, and appearance is without metal-like.
Comparative example 2
The present embodiment is only with Shooting Technique and spraying process same as Example 1.Injection molding resin material and work
Skill step is same as Example 1, will be molded by the plastic workpiece come and sprays according to the process of S2, S3, S4, the painting of spraying
Layer material is same as Example 1 with processing step.
The plastic workpiece that the present embodiment obtains only has plastic workpiece performance itself, though color can be diversified, appearance is without metal
Texture.
Comparative example 3
The present embodiment is only with Shooting Technique and electroplating technology same as Example 1.Injection molding resin material and work
Skill step is same as Example 1, will be molded by the plastic workpiece come and is electroplated according to the process of S1, the plating material of plating
It is same as Example 1 with processing step.
The plastic workpiece band metal-like that the present embodiment obtains, but color is single.
Comparative example 4
Compared with Example 1, difference is only that the present embodiment, the composition quality proportion of rose gold finishing coat in the present embodiment
For host agent: sustained release agent: curing agent=6:1:1.
The rose gold finishing coat that the present embodiment obtains is more sticky, and the plastic workpiece obtained through the same terms carries out finishing coat survey
Examination, test condition are as follows: gauze, 70 DEG C × 2h, loading 500gf (diameter 40mm).As a result it is unqualified, show the proportion
Resistance to difference non-stick after the electroplated spraying process of finishing coat.
Comparative example 5
Compared with Example 1, difference is only that the present embodiment, the diluent composition of rose gold finishing coat in the present embodiment
Are as follows: n-butyl acetate 17%, ethyl cellosolve acetate 24%, methyl iso-butyl ketone (MIBK) 24%, dimethylbenzene 25%, ethyl cellulose
10%.
The plastic workpiece obtained to the rose gold finishing coat that the present embodiment obtains through the same terms carries out the resistance to survey non-stick of finishing coat
Examination, test condition are as follows: gauze, 70 DEG C × 2h, loading 500gf (diameter 40mm).As a result unqualified.Resistance to vapour is carried out to it
Oiliness test, test condition are as follows: Regular gasoline (No. 87 gasoline) 20 DEG C × 30min impregnates.As a result unqualified.
Comparative example 6
Compared with Example 1, difference is only that the present embodiment, the diluent composition of rose gold finishing coat in the present embodiment
Are as follows: ethyl acetate 25%, butyl glycol ether 24%, methyl iso-butyl ketone (MIBK) 24%, dimethylbenzene 13%, dehydrated alcohol 14%.
The plastic workpiece obtained to the rose gold finishing coat that the present embodiment obtains through the same terms carries out the resistance to survey non-stick of finishing coat
Examination, test condition are as follows: gauze, 70 DEG C × 2h, loading 500gf (diameter 40mm).As a result unqualified.Resistance to vapour is carried out to it
Oiliness test, test condition are as follows: Regular gasoline (No. 87 gasoline) 20 DEG C × 30min impregnates.As a result unqualified.
Embodiment 2
Using the workpiece finishing coat performance test of the plating spraying process of rose golden:
Finishing coat performance test is carried out to the plastic workpiece that embodiment 1 obtains, the results are shown in Table 1.
Rose gold finishing coat the performance test results made from rose gold oil spout after table 1, plating
As test result as it can be seen that workpiece finishing coat made from the plating spraying process of rose golden used in embodiment 1 is with excellent
Good performance, stability are good.
To those skilled in the art, present invention is obviously not limited to the details of above-mentioned exemplary embodiment.It is not carrying on the back
In the case where spirit or essential attributes of the invention, those skilled in the art can realize this hair in other specific forms
It is bright.But it should be noted that enumerating for above embodiments is to allow those skilled in the art that institute of the present invention is more clearly understood
Technical solution is stated, protection scope of the presently claimed invention is not construed as limiting.
Claims (10)
1. a kind of plating spraying process of rose golden, which comprises the following steps:
S1: the plastic workpiece come will be molded by and carried out according to the process of sour copper, semi-gloss nickel, pearl nickel, microporous nickel and light chromium
Electroplating processes obtain plated item；
S2: cleaning treatment is carried out to plated item；
S3: plated item surface after the cleaning sprays transparent priming, carries out the flash distillation of priming paint, toasts, cooling, at clean process
Reason, obtains the workpiece with transparent priming；
S4: in the workpiece surface spraying rose gold finishing coat with transparent priming, carrying out the flash distillation of finishing coat, toasts, cooling.
2. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that electroplating processes are each in S1
The control condition of process are as follows:
1) sour copper: current density is 4~6ASD, and electroplating time is 23~27min；
2) semi-gloss nickel: current density is 1~3ASD, and electroplating time is 14~18min；
3) pearl nickel: current density is 3~5ASD, and electroplating time is 7~9min；
4) microporous nickel: current density is 0.5~2.5ASD, and electroplating time is 1.5~2.5min；
5) light chromium: current density is 16~17ASD, and electroplating time is 3.5~4.5min.
3. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that cleaning treatment in S2
Method is dry ice cleaning treatment and electrostatic precipitation processes.
4. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that the flash distillation of priming paint in S3
Temperature is 20~30 DEG C, and flash-off time is 16~20min.
5. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that the baking of priming paint in S3
Temperature is 80~85 DEG C, and baking time is 30~35min.
6. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that the flash distillation of finishing coat in S4
Temperature is 25~35 DEG C, and flash-off time is 14~18min；Baking temperature is 80~85 DEG C, and baking time is 30~35min.
7. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that rose gold finishing coat at
Dividing quality proportioning is host agent: sustained release agent: curing agent=4:1:1.5.
8. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that rose gold coat component
Host agent comprise the following raw materials by weight percent: acrylic resin 30~35%, toluene 44~45%, ethyl acetate 5~
10%, solvent 10~20%.
9. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that rose gold coat component
Diluent comprise the following raw materials by weight percent: n-butyl acetate 20~25%, ethyl cellosolve acetate 20~
25%, methyl iso-butyl ketone (MIBK) 20~25%, dimethylbenzene 10~15%, ethyl solvent 10~15%.
10. a kind of plating spraying process of rose golden according to claim 1, which is characterized in that rose gold finishing coat at
The curing agent divided comprises the following raw materials by weight percent: poly- diisocyanate 15~20%, toluene 35~40%, acetic acid second
Ester 35~40%, dimethylbenzene 1~5%, 2- methoxy ethyl ester 1~5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003425.0A CN109675777B (en) | 2019-01-03 | 2019-01-03 | Rose gold electroplating spraying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003425.0A CN109675777B (en) | 2019-01-03 | 2019-01-03 | Rose gold electroplating spraying process |
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| CN109675777A true CN109675777A (en) | 2019-04-26 |
| CN109675777B CN109675777B (en) | 2022-04-15 |
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| CN201910003425.0A Active CN109675777B (en) | 2019-01-03 | 2019-01-03 | Rose gold electroplating spraying process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774271A (en) * | 2020-07-10 | 2020-10-16 | 埃维尔汽车部件(苏州)有限公司 | Multicolor electroplating and spraying process |
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| CN106011960A (en) * | 2016-05-19 | 2016-10-12 | 杭州莱源环保科技有限公司 | Electroplating process for automobile central controller |
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| CN111774271A (en) * | 2020-07-10 | 2020-10-16 | 埃维尔汽车部件(苏州)有限公司 | Multicolor electroplating and spraying process |
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| CN109675777B (en) | 2022-04-15 |
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