CN117888156A - Cathode electrodeposition color separation color coating method for noble metal jewelry surface - Google Patents
Cathode electrodeposition color separation color coating method for noble metal jewelry surface Download PDFInfo
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- CN117888156A CN117888156A CN202410070937.XA CN202410070937A CN117888156A CN 117888156 A CN117888156 A CN 117888156A CN 202410070937 A CN202410070937 A CN 202410070937A CN 117888156 A CN117888156 A CN 117888156A
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- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 119
- 238000009500 colour coating Methods 0.000 title claims abstract description 77
- 238000004070 electrodeposition Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000011247 coating layer Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003086 colorant Substances 0.000 claims abstract description 8
- 229920006317 cationic polymer Polymers 0.000 claims abstract description 7
- 239000002861 polymer material Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 8
- 230000000873 masking effect Effects 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 239000002659 electrodeposit Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000009713 electroplating Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002966 varnish Substances 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000010970 precious metal Substances 0.000 description 4
- 238000010147 laser engraving Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000005303 weighing Methods 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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
-
- 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
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Abstract
The invention discloses a cathode electrodeposition color separation color coating method for the surface of noble metal jewelry, which comprises the following steps: s1, mixing a cationic polymer material and pure water according to the volume ratio of 1:4-8, and adding nano color paste to obtain a color electrodeposition liquid; s2, carrying out mask shielding on the noble metal workpiece, and leaking out a metal surface needing to be coated with color; s3, attaching the color electrodeposition liquid to a metal surface needing color coating by adopting a cathode electrodeposition method, and baking; s4, repeating the steps S2 and S3, and carrying out color coating treatment on the metal surface areas which are different in need of color coating to obtain the noble metal workpiece covered with the color coating layer. By the method provided by the invention, a designer can match various colors on the surface of the noble metal jewelry, the fashion level of the product is greatly increased, the market value and the artistic value are extremely high, and more diversified and personalized choices are provided for consumers; the color coating film on the surface of the colored noble metal jewelry is uniform, smooth, fine and smooth, and has hard and bright texture, corrosion resistance and wear resistance.
Description
Technical Field
The invention relates to the technical field of color coating, in particular to a cathode electrodeposition color separation color coating method for the surface of noble metal jewelry.
Background
At present, the requirements of consumers on jewelry are not limited to the value of noble metal jewelry, but rather seek the decoration and fashion of the noble metal jewelry. Noble metal ornaments in the existing market are various, and are not only embodied in patterns and materials, but also in surface treatment of ornaments, for example, the surfaces of silver and gold ornaments are generally classified into bright and frosted surfaces, and different appearance effects are respectively shown.
However, with the improvement of the quality of life and aesthetic requirements of people, the pursuit of people on ornaments is higher and higher, and the surface effect of the existing ornaments is gradually unable to meet the demands of people. And the traditional noble metal jewelry such as gold, platinum, silver and the like basically adopts the colors of metals, so that the color is single, and the pursuit of consumers on fashion diversity cannot be met.
Disclosure of Invention
Therefore, the invention aims to at least solve the defects in the prior art to a certain extent, thereby providing a cathode electrodeposition color separation and coating method for the surface of noble metal jewelry.
In order to achieve the above purpose, the invention adopts a technical scheme that:
The invention provides a cathode electrodeposition color separation color coating method for the surface of noble metal jewelry, which comprises the following steps:
S1, mixing a cationic polymer material and pure water according to the volume ratio of 1:4-8, and adding nano color paste to obtain a plurality of colored electrodeposit solutions with different colors;
S2, carrying out mask shielding treatment on the noble metal workpiece, and leaking out a metal surface needing to be coated with color;
s3, attaching the color electrodeposition liquid to the metal surface needing color coating by adopting a cathode electrodeposition method, and baking;
And S4, repeating the step S2 and the step S3, and carrying out color coating treatment on the metal surface areas which are different in needs of color coating to obtain the noble metal workpiece covered with the color coating layer.
Further, the thickness of the color coating layer is 5-15 mu m.
Further, the weight of the color-coated layer is 0.001-0.009g.
Further, the step S3 specifically includes:
S31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current, and adjusting the voltage to 20-90V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution at the same time for color coating, and taking out the color coated noble metal workpiece;
and S34, baking the color-coated noble metal workpiece to obtain the noble metal workpiece with the color-coated layer.
Further, in the step S31, the 220V power source is converted into dc power by a transformer rectifier.
Further, in the step S33, the color coating time of the color electro-deposition solution is 10-40S.
Further, in the step S34, the conditions of the baking process are: baking at 100-200deg.C for 20-40 min.
Further, the cationic polymer material is at least one of acrylic resin, epoxy resin and polyurethane resin.
Further, in the step S2, a masking layer is formed on the noble metal workpiece by performing masking treatment on the noble metal workpiece by manually coating a covering liquid or spraying a varnish, attaching a masking film, and electroplating a color film.
Further, in the step S2, a part of the mask shielding layer on the noble metal workpiece is removed by hand carving, laser carving, and numerical control machine carving, so that the metal surface to be coated with the color is leaked.
The invention provides a cathode electrodeposition color separation color coating method for the surface of noble metal jewelry, which comprises the following steps: s1, mixing a cationic polymer material and pure water according to the volume ratio of 1:4-8, and adding nano color paste to obtain a plurality of colored electrodeposit solutions with different colors; s2, carrying out mask shielding treatment on the noble metal workpiece, and leaking out a metal surface needing to be coated with color; s3, attaching the color electrodeposition liquid to the metal surface needing color coating by adopting a cathode electrodeposition method, and baking; and S4, repeating the step S2 and the step S3, and carrying out color coating treatment on the metal surface areas which are different in needs of color coating to obtain the noble metal workpiece covered with the color coating layer. The method provided by the invention can lead a designer to carry out various color collocations on the surface of the noble metal jewelry, greatly increases the fashion level of the product, has extremely high market value and artistic value, and provides more diversified and personalized choices for consumers; the noble metal jewelry coated by the method has uniform and smooth color coating film on the surface, fine color, hard texture, corrosion resistance and wear resistance, and does not influence the calculation of the weight of the noble metal jewelry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the front structure of a precious metal workpiece before color coating according to the present invention;
FIG. 2 is a schematic side view of a precious metal workpiece prior to color coating according to the present invention;
FIG. 3 is a schematic diagram of the front structure of a first color coated noble metal workpiece according to the present invention;
FIG. 4 is a schematic side view of a first color coated noble metal workpiece according to the present invention;
FIG. 5 is a schematic diagram of the front structure of a third color coated noble metal workpiece according to the present invention;
FIG. 6 is a schematic side view of a third color coated noble metal workpiece according to the present invention;
FIG. 7 is a schematic diagram of the front structure of a fully colored precious metal workpiece according to the present invention;
FIG. 8 is a schematic side view of a fully colored, fully finished precious metal workpiece according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Example 1
The embodiment of the application provides a cathode electrodeposition color separation and coating method for the surface of noble metal jewelry, which comprises the following preparation steps:
S1, mixing acrylic resin and pure water according to a volume ratio of 1:4, and adding red nanometer color paste to obtain red electrodeposition liquid;
S2, carrying out mask shielding treatment on the noble metal workpiece by manually coating a covering liquid, forming a layer of mask on the noble metal workpiece, and removing the mask on the noble metal workpiece by manual carving, so that a metal surface needing color coating is leaked;
s3, attaching the color electrodeposition liquid to the metal surface to be coated by adopting a cathode electrodeposition method, and baking, wherein the method specifically comprises the following steps of:
s31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current through a transformer rectifier, and adjusting the voltage to 20V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the noble metal workpiece and the anode stainless steel sheet which are subjected to the electrified treatment into the colorful electro-deposition solution for colorful 10S, and taking out the noble metal workpiece after colorful;
and S34, placing the color-coated noble metal workpiece into an oven at 150 ℃ for baking for 30 minutes to obtain the noble metal workpiece with the color-coated layer.
The thickness of the color coating layer attached to the noble metal workpiece is 5 mu m, the weight is 0.001g, the weight of the color coating layer is too light and can be ignored, the weighing of the noble metal workpiece can not be influenced, the color coating layer obtained by the method is uniform, smooth and fine in color, and rich in color combination, so that a designer can select color matching according to the requirement, the surface color of the noble metal jewelry is not single any more, more volatilization space is provided for the designer, the richness of product colors is greatly increased, the noble metal workpiece manufactured by the method has dual properties of fashion and conservation, extremely high market value and artistic value, more diversified and personalized choices are provided for consumers, and the materials adopted in the method are environment-friendly and nontoxic and can not harm the environment and human body. The baking treatment is carried out on the noble metal after the color coating, so that the adhesive force, the hardness and the wear resistance of the color coating layer can be enhanced.
Example 2
S1, mixing epoxy resin and pure water according to a volume ratio of 1:5, and then adding red and yellow nanometer color paste to obtain red and yellow electrodeposition liquid respectively;
S2, carrying out mask shielding treatment on the noble metal workpiece by manually coating a covering liquid, forming a layer of mask on the noble metal workpiece, and removing part of the mask on the noble metal workpiece by laser engraving to leak a first metal surface needing color coating;
s3, attaching the color electrodeposition liquid to a first metal surface needing color coating by adopting a cathode electrodeposition method, and baking, wherein the method specifically comprises the following steps of:
s31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current through a transformer rectifier, and adjusting the voltage to 40V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution for colorful 15S, and taking out the colorful noble metal workpiece;
s34, placing the color-coated noble metal workpiece into a baking oven at 120 ℃ for baking for 25 minutes to obtain the noble metal workpiece with the red first color-coated layer;
s4, repeating the step S2 to perform laser engraving to obtain a second metal surface needing to be coated with color, and repeating the step S3 to perform color coating on the second metal surface to obtain a yellow second color coating layer, so that the noble metal workpiece covered with a plurality of color coating layers is obtained, wherein the thicknesses of the first color coating layer and the second color coating layer are the same.
Wherein the thickness of the color coating layer attached to the noble metal workpiece was 7 μm and the weight was 0.003g.
Example 3
S1, mixing polyurethane resin and pure water according to a volume ratio of 1:6, and adding red, yellow and green nano color paste to obtain red, yellow and green electrodeposition liquid respectively;
S2, carrying out mask shielding treatment on the noble metal workpiece through a shielding film, forming a layer of mask on the noble metal workpiece, and removing part of the mask on the noble metal workpiece through engraving by a numerical control machine tool to leak a first metal surface needing color coating;
s3, attaching the color electrodeposition liquid to a first metal surface needing color coating by adopting a cathode electrodeposition method, and baking, wherein the method specifically comprises the following steps of:
S31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current through a transformer rectifier, and adjusting the voltage to 50V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
s33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution for colorful 20S, and taking out the colorful noble metal workpiece;
s34, placing the color-coated noble metal workpiece into a baking oven at 150 ℃ for baking for 30 minutes to obtain the noble metal workpiece with the red first color-coated layer;
S4, repeating the step S2 to engrave to obtain a second metal surface needing to be colored, and repeating the step S3 to colored the second metal surface to obtain a yellow second colored layer; and (3) repeating the step (S2) again to obtain a third metal surface needing to be coated with the color, and repeating the step (S3) to obtain a green third color coating layer on the third metal surface, so as to finally obtain the noble metal workpiece covered with a plurality of color coating layers, wherein the thicknesses of the first color coating layer, the second color coating layer and the third color coating layer are the same.
Wherein the thickness of the color coating layer attached to the noble metal workpiece was 10 μm and the weight was 0.005g.
Example 4
S1, mixing acrylic resin and pure water according to a volume ratio of 1:7, and adding red, yellow and pink nanometer color paste to obtain red, yellow and pink electrodeposition liquid respectively;
S2, carrying out mask shielding treatment on the noble metal workpiece by spraying varnish, forming a layer of mask on the noble metal workpiece, and removing part of the mask on the noble metal workpiece by manual carving to leak a first metal surface needing to be coated with color;
s3, attaching the color electrodeposition liquid to a first metal surface needing color coating by adopting a cathode electrodeposition method, and baking, wherein the method specifically comprises the following steps of:
S31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current through a transformer rectifier, and adjusting the voltage to 70V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution for colorful 30S, and taking out the colorful noble metal workpiece;
S34, placing the color-coated noble metal workpiece into an oven at 120 ℃ for baking for 25 minutes to obtain the noble metal workpiece with the first color-coated layer;
S4, repeating the step S2 to engrave to obtain a second metal surface needing to be colored, and repeating the step S3 to colored the second metal surface to obtain a yellow second colored layer; repeating the step S2 again to obtain a third metal surface needing to be colored, and repeating the step S3 to colored the third metal surface to obtain a pink third colored layer; and finally obtaining the noble metal workpiece covered with a plurality of color-covered layers, wherein the thicknesses of the first color-covered layer, the second color-covered layer and the third color-covered layer are the same.
Wherein the thickness of the color coating layer attached to the noble metal workpiece was 12 μm and the weight was 0.007g. And the step S2 and the step S3 are repeated continuously, so that different positions of the noble metal workpiece can be engraved to carry out color coating of different colors for a plurality of times, and a process for representing patterns with various color compositions on a single noble metal workpiece is obtained. And engraving the noble metal workpiece according to the pattern selected by the user, so as to form the metal surface needing to be coated with the color.
Example 5
S1, mixing epoxy resin and pure water according to a volume ratio of 1:8, and adding red, yellow, pink and blue nanometer color paste to obtain red, yellow, pink and blue electrodeposition liquid respectively;
s2, carrying out mask shielding treatment on the noble metal workpiece through electroplating a color film (particularly adopting a transparent material or a color cationic polymer material), forming a layer of mask on the noble metal workpiece, and removing part of the mask on the noble metal workpiece through laser engraving, so that a first metal surface needing color coating is leaked;
s3, attaching the color electrodeposition liquid to a first metal surface needing color coating by adopting a cathode electrodeposition method, and baking, wherein the method specifically comprises the following steps of:
S31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current through a transformer rectifier, and adjusting the voltage to 90V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution at the same time for carrying out colorful 40S, and then taking out the colorful noble metal workpiece;
S34, placing the color-coated noble metal workpiece into an oven at 150 ℃ for baking for 40 minutes to obtain the noble metal workpiece with a first color-coated layer;
S4, repeating the step S2 to engrave to obtain a second metal surface needing to be colored, and repeating the step S3 to colored the second metal surface to obtain a yellow second colored layer; repeating the step S2 again to obtain a third metal surface needing to be colored, and repeating the step S3 to colored the third metal surface to obtain a pink third colored layer; and (3) repeating the step (S2) again to obtain a fourth metal surface needing to be coated with color, repeating the step (S4) to obtain a blue fourth color coating layer on the fourth metal surface, and finally obtaining the noble metal workpiece covered with a plurality of color coating layers, wherein the thicknesses of the first color coating layer, the second color coating layer, the third color coating layer and the fourth color coating layer are the same. The part after the previous color coating is finished has insulativity, so that the new color in the next color coating cannot be coated on the previous color, for example, the color in the process of coating the second metal surface cannot be coated on the first color coating layer.
Wherein the thickness of the color coating layer attached to the noble metal workpiece was 15 μm and the weight was 0.009g.
Finally, the invention provides a cathode electrodeposition color separation and coating method for the surface of noble metal jewelry, which comprises the following steps: s1, mixing a cationic polymer material and pure water according to the volume ratio of 1:4-8, and adding nano color paste to obtain a plurality of colored electrodeposit solutions with different colors; s2, carrying out mask shielding treatment on the noble metal workpiece, and leaking out a metal surface needing to be coated with color; s3, attaching the color electrodeposition liquid to the metal surface needing color coating by adopting a cathode electrodeposition method, and baking; and S4, repeating the step S2 and the step S3, and carrying out color coating treatment on the metal surface areas which are different in needs of color coating to obtain the noble metal workpiece covered with the color coating layer. The method provided by the invention can lead a designer to carry out various color collocations on the surface of the noble metal jewelry, greatly increases the fashion level of the product, has extremely high market value and artistic value, and provides more diversified and personalized choices for consumers; the noble metal jewelry coated by the method has uniform and smooth color coating film on the surface, fine color, hard texture, corrosion resistance and wear resistance, and does not influence the calculation of the quality of the noble metal jewelry.
It should be noted that, in the present disclosure, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It should also be noted that in the present disclosure, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The cathode electrodeposition color separation and coating method for the noble metal jewelry surface is characterized by comprising the following steps of:
S1, mixing a cationic polymer material and pure water according to the volume ratio of 1:4-8, and adding nano color paste to obtain a plurality of colored electrodeposit solutions with different colors;
S2, carrying out mask shielding treatment on the noble metal workpiece, and leaking out a metal surface needing to be coated with color;
s3, attaching the color electrodeposition liquid to the metal surface needing color coating by adopting a cathode electrodeposition method, and baking;
And S4, repeating the step S2 and the step S3, and carrying out color coating treatment on the metal surface areas which are different in needs of color coating to obtain the noble metal workpiece covered with the color coating layer.
2. The method for cathodic electrodeposition color separation coating of a noble metal jewelry surface of claim 1 wherein the thickness of said color coating layer is 5-15 μm.
3. The method of claim 1, wherein the color coating layer has a weight of 0.001-0.009g.
4. The method for cathodic electrodeposition color-separation and color-coating on a noble metal jewelry surface according to claim 1, wherein said step S3 comprises:
S31, hooking the processed noble metal workpiece by using a conductive hook, converting a 220V power supply into direct current, and adjusting the voltage to 20-90V;
S32, connecting a cathode of the power supply with the adjusted voltage to a conductive hook hooked with the processed noble metal workpiece, and connecting an anode to an anode stainless steel sheet;
S33, immersing the electrified noble metal workpiece and the anode stainless steel sheet into the colorful electro-deposition solution at the same time for color coating, and taking out the color coated noble metal workpiece;
and S34, baking the color-coated noble metal workpiece to obtain the noble metal workpiece with the color-coated layer.
5. The method according to claim 4, wherein in the step S31, the 220V power source is converted into dc power by a transformer rectifier.
6. The method according to claim 4, wherein in the step S33, the color coating time of the color electro-deposition solution is 10-40S.
7. The method for cathodic electrodeposition color-separation coating on a noble metal jewelry surface according to claim 4 wherein in said step S34, said baking treatment is performed under the conditions of: baking at 100-200deg.C for 20-40 min.
8. The method for cathodic electrodeposition color-separation coating of noble metal jewelry surface of claim 1 wherein said cationic polymeric material is at least one of acrylic resin, epoxy resin, polyurethane resin.
9. The method according to claim 1, wherein in the step S2, a masking layer is formed on the noble metal workpiece by masking the noble metal workpiece by manually coating a masking liquid or spraying a varnish, attaching a masking film, and electroplating a color film.
10. The method according to claim 9, wherein in step S2, the mask shielding layer on the noble metal workpiece is removed by hand carving, laser carving, and numerical control machine carving, so as to leak the metal surface to be coated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410070937.XA CN117888156A (en) | 2024-01-17 | 2024-01-17 | Cathode electrodeposition color separation color coating method for noble metal jewelry surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410070937.XA CN117888156A (en) | 2024-01-17 | 2024-01-17 | Cathode electrodeposition color separation color coating method for noble metal jewelry surface |
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| CN117888156A true CN117888156A (en) | 2024-04-16 |
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| CN202410070937.XA Pending CN117888156A (en) | 2024-01-17 | 2024-01-17 | Cathode electrodeposition color separation color coating method for noble metal jewelry surface |
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- 2024-01-17 CN CN202410070937.XA patent/CN117888156A/en active Pending
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