CN112078293A - Production process for etching double-color decorative metal plate - Google Patents
Production process for etching double-color decorative metal plate Download PDFInfo
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- CN112078293A CN112078293A CN202010007370.3A CN202010007370A CN112078293A CN 112078293 A CN112078293 A CN 112078293A CN 202010007370 A CN202010007370 A CN 202010007370A CN 112078293 A CN112078293 A CN 112078293A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0415—Ornamental plaques, e.g. decorative panels, decorative veneers containing metallic elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/28—Printing on other surfaces than ordinary paper on metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/222—Removing surface-material, e.g. by engraving, by etching using machine-driven mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/227—Removing surface-material, e.g. by engraving, by etching by etching
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0015—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterized by the colour of the layer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a production process for etching a bicolor decorative metal plate, which comprises the steps of silk-printing patterns on the metal plate by using printing ink, drying, etching the surface of the metal plate which is not covered by the printing ink by using etching liquid, cleaning the printing ink, forming concave patterns and convex patterns on the surface of the metal plate, coloring a black titanium coloring layer or a vacuum coating PVD (physical vapor deposition) coating layer, grinding the black titanium coloring layer or the PVD coating layer which is covered on the surface of the convex patterns until the original color of the metal surface of the original convex patterns is clearly exposed, remaining the black titanium coloring layer or the PVD coating layer in the concave patterns, forming patterns with two colors on the surface of the metal plate, curing baking paint, and clearly seeing the two colors in front through the baking paint layer; the product can produce a plurality of decorative metal plates matched with different colors for customers to freely select, and has the advantages of beautiful surface decoration, high grade, good overall decorative effect and the like.
Description
Technical Field
The invention relates to a metal plate, in particular to a production process for etching a bicolor decorative metal plate.
Background
The existing metal decorative plate is painted or electroplated on the surface of a smooth metal plate, has single color, is easy to scratch and is difficult to repair; if the decorative metal plate is bicolor, the decorative metal plate is formed by screen printing or spraying pigments or paints with different colors on the surface of the coating again, and the metal decorative plate is easy to fade or delaminate part of colors after long-term use, and has poor color and luster and poor decorative effect.
Disclosure of Invention
In order to solve the technical problems, the invention provides the production process of the etched two-color decorative metal plate, which has high production efficiency, reasonable process design and stable color.
A production process for etching a bicolor decorative metal plate is characterized by comprising the following steps:
1) lifting the metal plate to a screen printing platform, and carrying out pattern screen printing by using printing ink through a screen printing plate;
2) drying the printing ink with the patterns printed on the surface of the metal plate in the air or in an oven to solidify the printing ink on the surface of the metal plate;
3) conveying the metal plate with the solidified ink to an etching machine, and etching the surface of the metal plate which is not covered by the ink by using etching liquid to etch concave patterns on the surface of the metal plate;
4) conveying the etched metal plate to ink removing equipment, softening, cleaning and removing the printed ink by using sodium hydroxide to form a concave pattern and a convex pattern on the surface of the metal plate;
5) conveying the metal plate with the concave patterns and the relative convex patterns to a sand grinder, and carrying out sanding and cleaning treatment on the surface of the metal plate;
6) conveying the metal plate with the concave patterns and the corresponding convex patterns to oxidation coloring equipment, and then plating black titanium on the surface of the metal plate by using oxidation coloring water to form a full-covered black titanium coloring layer on the surface of the metal plate; the color of the black titanium coloring layer is different from the natural color of the metal plate;
or the following steps: conveying the metal plate with the concave patterns and the relative convex patterns to PVD coating equipment, and then carrying out vacuum PVD coating on the surface of the metal plate completely to form a full-coverage PVD coating layer on the surface of the metal plate; the color of the PVD coating layer is different from the natural color of the metal plate;
7) conveying the metal plate with the black titanium coloring layer or the PVD coating layer to a snowflake sand machine for carrying out surface integral horizontal grinding on snowflake sand to thin the black titanium coloring layer or the PVD coating layer until the black titanium coloring layer or the PVD coating layer covering the surface of the raised pattern is ground off to clearly expose the original color of the metal surface with the original raised pattern, and keeping the black titanium coloring layer or the PVD coating layer in the lower recessed pattern to form patterns with two colors on the surface of the metal plate, wherein one is the color of the patterns of the black titanium coloring layer or the PVD coating layer, the other is the original color of the raised patterns on the surface of the original metal plate, and the patterns with the two colors are staggered and regular or irregular;
8) the surface of the metal plate is baked, the original black titanium coloring layer pattern or the original PVD coating layer pattern and the original raised pattern on the surface of the metal plate are fully covered by the baking paint to form a baking paint layer, then the baking paint layer is cured at high temperature to realize surface protection, and the two colors in the front can be clearly seen through the baking paint layer; the baking varnish is lighter than the first two colors or colorless.
9) And conveying the metal plate with the baked paint to a film sticking machine for surface film sticking protection to finish forming a finished product.
The preferable technical scheme is further as follows: the PVD coating is a vacuum ion coating, and the color is as follows: titanium gold, champagne, bronze, rose gold, gray titanium, coffee gold, wine red, rose red, sapphire blue, and the like. 3. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the water temperature of the water plating of the oxidation coloring water-plated black titanium is 80-95 ℃, and the time is 30-80 minutes; the temperature of the PVD coating is 130-180 ℃, and the time is 5-25 minutes.
The preferable technical scheme is further as follows: the ink removing time of the step 4 is 2-4 minutes, and the ink removing water temperature is normal temperature.
The preferable technical scheme is further as follows: the oxidation coloring equipment is a coloring pool; the PVD coating equipment is vacuum coating equipment; the thickness of the PVD coating layer is 0.15-5 microns.
The preferable technical scheme is further as follows: the metal plate is a stainless steel plate or an aluminum plate or a copper plate or a composite plate with stainless steel.
The preferable technical scheme is further as follows: the film material of the PVD coating layer is a titanium chemical film layer or a titanium-aluminum composite compound film layer.
The production process of the etched double-color decorative metal plate has the advantages that:
the process can form a sunken pattern and a relatively raised pattern on the surface of the metal plate due to etching, firstly plating a black titanium coloring layer or a PVD coating layer on the sunken pattern by water, carrying out integral horizontal grinding of snowflake sand on the surface by a snowflake sand machine, thinning the black titanium coloring layer or the PVD coating layer until the black titanium coloring layer or the PVD coating layer covering the surface of the raised pattern is ground off, and clearly exposing the original color of the metal surface of the original raised pattern, and then clearly seeing two colors of the original black titanium coloring layer pattern or the PVD coating layer pattern and the raised original color pattern, wherein one is the color of the black titanium coloring layer pattern or the PVD coating layer pattern, and the other is the original color of the raised pattern on the surface of the original metal plate; then, carrying out surface baking finish on the metal plate, wherein the baking finish can fully cover the original black titanium coloring layer patterns or PVD coating layer patterns and the original raised patterns on the surface of the metal plate to form a baking finish layer, and then carrying out high-temperature curing on the baking finish layer to realize surface protection, wherein the two colors in the front can be clearly seen through the baking finish layer; the natural color of the metal plate of the product is determined according to the material selection, the black titanium coloring layer or the PVD coating layer is matched with the natural color of the metal, different styles and decorative effects are obtained by matching different colors, and a manufacturer can produce a plurality of decorative metal plates matched with different colors for customers to freely select; the product has the advantages of beautiful surface decoration, high grade, good decoration overall effect and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of a product of the present invention;
FIG. 2 is a schematic illustration of the layered separation of a cross-section of the product of the present invention;
FIG. 3 is a schematic cross-sectional view of a product of the present invention;
FIG. 4 is a schematic illustration of the layered separation of a cross section of the product of the present invention.
Reference numbers: the metal plate comprises a metal plate 1, concave patterns 11, convex patterns 12, a black titanium coloring layer 2, a PVD coating layer 3 and a baking finish layer 4.
Detailed Description
A production process for etching a bicolor decorative metal plate is characterized by comprising the following steps:
1) lifting the metal plate to a screen printing platform, and carrying out pattern screen printing by using printing ink through a screen printing plate;
2) drying the printing ink with the patterns printed on the surface of the metal plate in the air or in an oven to solidify the printing ink on the surface of the metal plate;
3) conveying the metal plate with the solidified ink to an etching machine, and etching the surface of the metal plate which is not covered by the ink by using etching liquid to etch concave patterns on the surface of the metal plate;
4) conveying the etched metal plate to ink removing equipment, softening, cleaning and removing the printed ink by using sodium hydroxide to form a concave pattern and a convex pattern on the surface of the metal plate;
5) conveying the metal plate with the concave patterns and the relative convex patterns to a sand grinder, and carrying out sanding and cleaning treatment on the surface of the metal plate;
6) conveying the metal plate with the concave patterns and the corresponding convex patterns to oxidation coloring equipment, and then plating black titanium on the surface of the metal plate by using oxidation coloring water to form a full-covered black titanium coloring layer on the surface of the metal plate; the color of the black titanium coloring layer is different from the natural color of the metal plate;
or the following steps: conveying the metal plate with the concave patterns and the relative convex patterns to PVD coating equipment, and then carrying out vacuum PVD coating on the surface of the metal plate completely to form a full-coverage PVD coating layer on the surface of the metal plate; the color of the PVD coating layer is different from the natural color of the metal plate;
7) conveying the metal plate with the black titanium coloring layer or the PVD coating layer to a snowflake sand machine for carrying out surface integral horizontal grinding on snowflake sand to thin the black titanium coloring layer or the PVD coating layer until the black titanium coloring layer or the PVD coating layer covering the surface of the raised pattern is ground off to clearly expose the original color of the metal surface with the original raised pattern, and keeping the black titanium coloring layer or the PVD coating layer in the lower recessed pattern to form patterns with two colors on the surface of the metal plate, wherein one is the color of the patterns of the black titanium coloring layer or the PVD coating layer, the other is the original color of the raised patterns on the surface of the original metal plate, and the patterns with the two colors are staggered and regular or irregular; the plurality of black titanium coloring layers are combined into a black titanium coloring pattern layer or the plurality of PVD coating layers are combined into a PVD coating pattern layer;
8) the surface of the metal plate is baked, the original black titanium coloring layer pattern or the original PVD coating layer pattern and the original raised pattern on the surface of the metal plate are fully covered by the baking paint to form a baking paint layer, then the baking paint layer is cured at high temperature to realize surface protection, and the two colors in the front can be clearly seen through the baking paint layer; the baking varnish is lighter than the first two colors or colorless.
9) And conveying the metal plate with the baked paint to a film sticking machine for surface film sticking protection to finish forming a finished product.
The preferable technical scheme is further as follows: the PVD coating is a vacuum ion coating (PVD coating layer), and the color: titanium gold, champagne, bronze, rose gold, gray titanium, coffee gold, wine red, rose red, sapphire blue, and the like.
The preferable technical scheme is further as follows: the water temperature of the water plating of the oxidation coloring water-plated black titanium is 80-95 ℃, and the time is 30-80 minutes; the temperature of the PVD coating is 130-180 ℃, and the time is 5-25 minutes.
The preferable technical scheme is further as follows: the ink removing time of the step 4 is 2-4 minutes, and the ink removing water temperature is normal temperature: 20-35 ℃.
The preferable technical scheme is further as follows: the oxidation coloring equipment is a coloring pool; the PVD coating equipment is vacuum coating equipment; the thickness of the PVD coating layer is 0.15-5 microns; the depth of the recessed grooves is larger than the thickness of the black titanium coloring layer or the PVD coating layer (the thickness of the black titanium coloring layer or the PVD coating layer can be within 1 mm).
The preferable technical scheme is further as follows: the metal plate is a stainless steel plate or an aluminum plate or a copper plate or a composite plate with stainless steel.
The preferable technical scheme is further as follows: the film material of the PVD coating layer is a titanium chemical film layer or a titanium-aluminum composite compound film layer.
Description of step 2: if the airing is selected to be natural airing, the airing time is 30 minutes to 5 hours; generally, an oven is selected for drying, and the drying time is 2-20 minutes; the oven is an electric oven or an electric oven; the humidity of the ink after drying is 10% or less.
Description of step 3: the etching time is 2-5 minutes; the etching depth of the concave pattern is as follows: 0.03 mm to 0.2 mm, or less than 1 mm.
The natural color of the metal plate is silvery white or grey white, and a stainless steel plate is selected;
the preferable technical scheme of the process is that the deplating time is as follows: 30-150 seconds; the time for cleaning and drying is as follows: 1-2 minutes; the thickness of the baking paint layer is as follows: 10 to 500 microns, typically 20 to 50 microns.
The baking paint layer can protect the black titanium coloring layer or the PVD coating layer from being scratched, faded and delaminated from the outside, so that the lasting color and luster are unchanged, the lasting fresh and clean decoration effect is achieved, and the service life is prolonged.
The metal plate 1, the black titanium coloring layer 2 or the PVD coating layer 3 and the baking finish layer 4 are laminated, bonded and attached into a whole; the concave patterns and the convex patterns are colored with black titanium coloring layers or PVD coating layers 3, so that the black titanium coloring layers or the PVD coating layers 3 can be ensured to be stably attached or bonded and cannot be delaminated; the concave and convex patterns can make the metal plate have stereoscopic impression.
Concave-convex patterns and concave-convex patterns are mainly formed by concave-convex particles; the concave patterns and the convex patterns can be drawn lines, spot patterns, cloth patterns, cloud patterns, geometric patterns, wood-like patterns, marble-like patterns, line patterns, various flower hub patterns, various animal hub patterns, various plant (root, stem, branch and leaf) hub patterns and the like, and can also be various self-designed patterns.
The thickness of the metal plate 1 is 0.5 mm-1 cm, preferably 1 mm-3 mm; the depth of the concave patterns 11 is 0.03 mm-0.2 mm, and the height of the corresponding convex patterns 12 is 0.03 mm-0.2 mm, which can be determined according to the actual situation.
The depth of the concave patterns 11 can also be 0.2 mm-3 mm, and the height of the opposite convex patterns 12 can also be 0.2 mm-3 mm, which can also be determined according to the actual situation.
The depressions 11 may be of uniform depth, or may be partially deep and partially shallow, with the opposing projections 12 being of uniform or non-uniform height.
The concave patterns and the convex patterns enable the surface of the metal plate to form a regular or irregular concave-convex surface.
Because the product is thinner, the provided figures 1-4 are final product effect diagrams after being magnified by a plurality of times.
As shown in fig. 1 to 4: the sum of the plurality of depressed portions of the metal plate 1 represents a depressed pattern 11, and the sum of the plurality of raised portions represents a raised pattern 12; the black titanium coloring layers are combined into a black titanium coloring pattern layer, or the PVD coating layers are combined into a PVD coating pattern layer.
As shown in fig. 1 and 2: the black titanium coloring layer 2 covers only the dimples 11.
As shown in fig. 3 and 4: the PVD coating layer 3 only covers the concave patterns 11.
The product produced by the process is as follows:
example 1: as shown in fig. 1 and 2: an etched double-color decorative metal plate comprises a metal plate 1, wherein concave patterns 11 are etched on the surface of the metal plate 1, convex patterns 12 are correspondingly formed on non-concave parts, and the colors of the convex patterns are the natural colors (silvery white) of the metal plate; the concave patterns are colored with black titanium coloring layers (black), the bottom surfaces and the side wall surfaces of the concave patterns are colored with the black titanium coloring layers, only the tops of the convex patterns 12 are not covered by the black titanium coloring layers, and the colors (black) of the black titanium coloring layers are different from the natural colors (silver-white) of the metal plates; the black titanium coloring layer 2 and the raised pattern 12 are covered with a baking paint layer 4, the color of the baking paint layer is colorless baking paint, and the two colors (silver white and black) in front can be clearly seen through the baking paint layer.
Example 2: as shown in fig. 1 and 2: an etched double-color decorative metal plate comprises a metal plate 1, wherein concave patterns 11 are etched on the surface of the metal plate 1, convex patterns 12 are correspondingly formed on non-concave parts, and the colors of the convex patterns 11 are the natural colors (silvery white) of the metal plate; a PVD coating layer (sapphire blue) is electroplated on the concave patterns 11 in a vacuum manner, the PVD coating layer is electroplated on the bottom surface and the side wall surface of each concave pattern in a vacuum manner, only the tops of the convex patterns 12 are not covered by the PVD coating layer, and the color of the PVD coating layer (sapphire blue) is different from the natural color (silvery white) of the metal plate; the PVD coating layer 3 and the raised patterns 12 are covered with a baking paint layer 4, the color of the baking paint layer 4 is colorless baking paint, and the front two colors (sapphire blue and silver white) can be clearly seen through the baking paint layer.
Example 3: as shown in fig. 3 and 4: an etched double-color decorative metal plate comprises a metal plate 1, wherein concave patterns 11 are etched on the surface of the metal plate 1, convex patterns 12 are correspondingly formed on non-concave parts, and the colors of the convex patterns are the natural colors (silvery white) of the metal plate; the lower concave patterns are vacuum electroplated with PVD coating layers (wine red), the PVD coating layers are vacuum electroplated on the bottom surfaces and the side wall surfaces of the lower concave patterns, only the tops of the convex patterns 12 are not covered by the PVD coating layers, and the colors (wine red) of the PVD coating layers are different from the colors (silver white) of the natural colors of the metal plates; the PVD coating layer 3 and the raised pattern 12 are covered with a baking paint layer 4, the color of the baking paint layer 4 is colorless baking paint, and the two colors (wine red and silver white) in front can be clearly seen through the baking paint layer.
Example 4: an etched double-color decorative metal plate comprises a metal plate 1, wherein concave patterns 11 are etched on the surface of the metal plate 1, convex patterns 12 are correspondingly formed on non-concave parts, and the colors of the convex patterns are the natural colors (silvery white) of the metal plate; the top surface of the raised pattern is etched with a second concave pattern for the second time; the concave patterns are colored with black titanium coloring layers (black), the bottom surfaces and the side wall surfaces of the concave patterns are colored with the black titanium coloring layers, only the tops of the convex patterns 12 are not covered by the black titanium coloring layers, and the colors (black) of the black titanium coloring layers are different from the natural colors (silver-white) of the metal plates; the black titanium coloring layer 2, the convex patterns 12 and the second concave patterns (not shown) are covered with a baking paint layer, the color of the baking paint layer is colorless baking paint, the two colors (silver white and black) in the front can be clearly seen through the baking paint layer, and the second concave patterns can also be seen.
Specific example 1:
a production process for etching a bicolor decorative metal plate is characterized by comprising the following steps:
1) lifting the metal plate to a screen printing platform, and carrying out pattern screen printing by using printing ink through a screen printing plate; the pattern can be any design pattern; the selected metal plate is a stainless steel metal plate;
2) drying the printing ink with the patterns printed on the surface of the metal plate in the air or in an oven to solidify the printing ink on the surface of the metal plate;
3) conveying the metal plate with the solidified ink to an etching machine, and etching the surface of the metal plate which is not covered by the ink by using etching liquid to etch concave patterns on the surface of the metal plate;
4) conveying the etched metal plate to ink removing equipment, softening, cleaning and removing the printed ink by using sodium hydroxide to form a concave pattern and a convex pattern on the surface of the metal plate;
5) conveying the metal plate with the concave patterns and the corresponding convex patterns to a sanding machine, and sanding and cleaning the surface of the metal plate until the metal plate is clean;
6) conveying the metal plate with the concave patterns and the corresponding convex patterns to oxidation coloring equipment, and then plating black titanium (the black titanium is black) on the surface of the metal plate by using oxidation coloring water to form a full-covered black titanium coloring layer on the surface of the metal plate; the color of the black titanium coloring layer is different from the natural color of the metal plate; the natural color of the metal plate is silvery white;
7) conveying the metal plate with the black titanium coloring layer to a snowflake sand machine to carry out surface integral horizontal grinding of snowflake sand, so that the black titanium coloring layer becomes thin until the black titanium coloring layer covering the surface of the raised pattern is ground off, the natural color of the metal surface of the original raised pattern is clearly exposed, a snowflake surface effect is formed on the surface of the raised pattern, the black titanium coloring layer in the lower concave pattern is still remained, and patterns with two colors are formed on the surface of the metal plate, wherein one color is the color (black) of the patterns of the black titanium coloring layer, the other color is the natural color (silver white) of the raised patterns on the surface of the original metal plate, and the patterns with the two colors are staggered regularly or irregularly; the plurality of black titanium coloring layers are combined to form a black titanium coloring pattern layer;
8) the surface of the metal plate is baked, the original black titanium coloring layer patterns and the original raised patterns on the surface of the metal plate are fully covered by the baking paint to form a baking paint layer, then the baking paint layer is cured at high temperature to realize surface protection, and the front two colors (black and silver white, forming the matching of the two colors) can be clearly seen through the baking paint layer; the color of the baking varnish is colorless baking varnish. Baking paint by using a paint baking machine or paint baking equipment;
9) and conveying the metal plate with the baked paint to a film sticking machine for surface film sticking protection to finish forming a finished product.
Specific example 2:
a production process for etching a bicolor decorative metal plate is characterized by comprising the following steps:
1) lifting the metal plate to a screen printing platform, and carrying out pattern screen printing by using printing ink through a screen printing plate; the pattern can be any design pattern; the selected metal plate is a stainless steel metal plate;
2) drying the printing ink with the patterns printed on the surface of the metal plate in the air or in an oven to solidify the printing ink on the surface of the metal plate;
3) conveying the metal plate with the solidified ink to an etching machine, and etching the surface of the metal plate which is not covered by the ink by using etching liquid to etch concave patterns on the surface of the metal plate;
4) conveying the etched metal plate to ink removing equipment, softening, cleaning and removing the printed ink by using sodium hydroxide to form a concave pattern and a convex pattern on the surface of the metal plate;
5) conveying the metal plate with the concave patterns and the corresponding convex patterns to a sanding machine, and sanding and cleaning the surface of the metal plate until the metal plate is clean;
6) conveying the metal plate with the concave patterns and the corresponding convex patterns to PVD coating equipment, and then carrying out vacuum PVD coating on the surface of the metal plate completely to form a full-coverage PVD coating layer on the surface of the metal plate; the color of the PVD coating layer (such as sapphire blue) is different from the natural color of the metal plate; the natural color of the metal plate is silvery white;
7) conveying the metal plate with the PVD coating layer to a snowflake sand machine to carry out surface integral horizontal grinding of snowflake sand, so that the PVD coating layer becomes thin until the PVD coating layer covering the surface of the raised pattern is ground off, the natural color of the metal surface of the original raised pattern is clearly exposed, a snowflake surface effect is formed on the surface of the raised pattern, the PVD coating layer in the lower concave pattern is still reserved, and patterns of two colors are formed on the surface of the metal plate, wherein one color is the color of the pattern of the PVD coating layer (sapphire blue), the other color is the natural color of the raised pattern on the surface of the original metal plate (silver white), and the patterns of the two colors are staggered and regular or irregular; the plurality of PVD coating layers are gathered to form a PVD coating pattern layer;
8) the surface of the metal plate is baked, the original black titanium coloring layer pattern or the original PVD coating layer pattern and the original metal plate surface raised pattern are fully covered by the baking paint to form a baking paint layer, then the baking paint layer is cured at high temperature to realize surface protection, and the two colors (sapphire blue, silver white, and matching of the two colors) in the front can be clearly seen through the baking paint layer; the color of the baking varnish is colorless baking varnish (transparent baking varnish); baking paint by using a paint baking machine or paint baking equipment;
9) and conveying the metal plate with the baked paint to a film sticking machine for surface film sticking protection to finish forming a finished product.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (7)
1. A production process for etching a bicolor decorative metal plate is characterized by comprising the following steps:
1) lifting the metal plate to a screen printing platform, and carrying out pattern screen printing by using printing ink through a screen printing plate;
2) drying the printing ink with the patterns printed on the surface of the metal plate in the air or in an oven to solidify the printing ink on the surface of the metal plate;
3) conveying the metal plate with the solidified ink to an etching machine, and etching the surface of the metal plate which is not covered by the ink by using etching liquid to etch concave patterns on the surface of the metal plate;
4) conveying the etched metal plate to ink removing equipment, softening, cleaning and removing the printed ink by using sodium hydroxide to form a concave pattern and a convex pattern on the surface of the metal plate;
5) conveying the metal plate with the concave patterns and the relative convex patterns to a sand grinder, and carrying out sanding and cleaning treatment on the surface of the metal plate;
6) conveying the metal plate with the concave patterns and the corresponding convex patterns to oxidation coloring equipment, and then plating black titanium on the surface of the metal plate by using oxidation coloring water to form a full-covered black titanium coloring layer on the surface of the metal plate; the color of the black titanium coloring layer is different from the natural color of the metal plate;
or the following steps: conveying the metal plate with the concave patterns and the relative convex patterns to PVD coating equipment, and then carrying out vacuum PVD coating on the surface of the metal plate completely to form a full-coverage PVD coating layer on the surface of the metal plate; the color of the PVD coating layer is different from the natural color of the metal plate;
7) conveying the metal plate with the black titanium coloring layer or the PVD coating layer to a snowflake sand machine for carrying out surface integral horizontal grinding on snowflake sand to thin the black titanium coloring layer or the PVD coating layer until the black titanium coloring layer or the PVD coating layer covering the surface of the raised pattern is ground off to clearly expose the original color of the metal surface with the original raised pattern, and keeping the black titanium coloring layer or the PVD coating layer in the lower recessed pattern to form patterns with two colors on the surface of the metal plate, wherein one is the color of the patterns of the black titanium coloring layer or the PVD coating layer, the other is the original color of the raised patterns on the surface of the original metal plate, and the patterns with the two colors are staggered and regular or irregular;
8) the surface of the metal plate is baked, the original black titanium coloring layer pattern or the original PVD coating layer pattern and the original raised pattern on the surface of the metal plate are fully covered by the baking paint to form a baking paint layer, then the baking paint layer is cured at high temperature to realize surface protection, and the two colors in the front can be clearly seen through the baking paint layer; the baking varnish is lighter than the first two colors or colorless.
9) And conveying the metal plate with the baked paint to a film sticking machine for surface film sticking protection to finish forming a finished product.
2. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the PVD coating is a vacuum ion coating, and the color is as follows: titanium gold, champagne, bronze, rose gold, gray titanium, coffee gold, wine red, rose red, and sapphire blue.
3. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the water temperature of the water plating of the oxidation coloring water-plated black titanium is 80-95 ℃, and the time is 30-80 minutes; the temperature of the PVD coating is 130-180 ℃, and the time is 5-25 minutes.
4. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the ink removing time of the step 4 is 2-4 minutes, and the ink removing water temperature is normal temperature.
5. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the oxidation coloring equipment is a coloring pool; the PVD coating equipment is vacuum coating equipment; the thickness of the PVD coating layer is 0.15-5 microns.
6. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the metal plate is a stainless steel plate or an aluminum plate or a copper plate or a composite plate with stainless steel.
7. The process for producing an etched bi-color decorative metal sheet according to claim 1, wherein: the film material of the PVD coating layer is a titanium chemical film layer or a titanium-aluminum composite compound film layer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848721A (en) * | 2021-01-14 | 2021-05-28 | 格力电器（郑州）有限公司 | Method for forming lines on metal surface and application |
| CN113463019A (en) * | 2021-06-21 | 2021-10-01 | 扬州托新汽车零部件有限公司 | PVD (physical vapor deposition) double-color coating method for metal parts |
| CN115771353A (en) * | 2021-09-06 | 2023-03-10 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Method for manufacturing light-permeable decoration and corresponding light-permeable decoration |
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| JPH0540182A (en) * | 1991-08-05 | 1993-02-19 | Seiko Epson Corp | Manufacturing method of ornament part |
| CN108068533A (en) * | 2017-12-14 | 2018-05-25 | 宁海雄海模具厂 | A kind of curved metal surface detail manufacture craft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0540182A (en) * | 1991-08-05 | 1993-02-19 | Seiko Epson Corp | Manufacturing method of ornament part |
| CN108068533A (en) * | 2017-12-14 | 2018-05-25 | 宁海雄海模具厂 | A kind of curved metal surface detail manufacture craft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848721A (en) * | 2021-01-14 | 2021-05-28 | 格力电器（郑州）有限公司 | Method for forming lines on metal surface and application |
| CN113463019A (en) * | 2021-06-21 | 2021-10-01 | 扬州托新汽车零部件有限公司 | PVD (physical vapor deposition) double-color coating method for metal parts |
| CN115771353A (en) * | 2021-09-06 | 2023-03-10 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Method for manufacturing light-permeable decoration and corresponding light-permeable decoration |
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