Zhu Bingren's Discussion on the Development and Application of Color Copper Engraving Technology

release time:2019-07-11 14:36 | Visits:1496

The color Bronze sculpture is based on the scientific knowledge of color, and then explores a new art form that integrates color art and metal surface treatment technology from the aesthetic point of view.

From the study of color science, since the 17th century, the color science has begun to be summarized internationally. The formation of the surface color of an object depends on three aspects. The illumination of the light source, the object itself reflects a certain color light, and the human retina and brain. The way the visual cortex treats light waves.

At the end of the seventeenth century, Newton proved that color does not exist in matter itself, but as a result of light action. As long as the long and short spectra in the visible spectrum are combined to form white light, the wavelength of these visible light can correspond to seven. Different colors: red, orange, yellow, green, blue, blue, purple.

In order to produce a specific color, people must rely on the way of increasing or decreasing the light wave to make it receive only certain light waves and feel a certain color.

There are usually two ways to handle color: one is additive color method, which mixes light waves of different colors to form white light; the other is subtractive color method, which uses the subtractive mode of CMYK system, that is, the method of reducing light waves to produce color, color The copper carving technique is realized by the subtractive color method. Through the surface treatment technology of copper metal physical and chemical methods, find effective harmonic colors, and use the traditional three primary colors: blue, red, and yellow principles, purposefully using the same color tone, approximate color tone, and complementary color tone, Different blending methods such as triangle blending and double complement blending to achieve the best aesthetic effect.

The color copper sculpture is mainly based on the chemical conversion film treatment process on the metal surface, supplemented by the color coating process. The conversion film refers to the anion reaction of the outer layer atoms of the metal surface with the appropriate medium, the film layer formed on the metal surface, and the formation of the conversion film. It is a process of artificially induced and controlled corrosion, that is, the long-term process of oxidative discoloration caused by gradual corrosion under the influence of chemical substances in the atmospheric dust under specific environmental conditions, under the influence of modern technology. It changes color in a short time, and consciously makes its newly changed color not only stable and firm, but also conforms to the required metal conversion film. The color bronze sculpture is studied from the following aspects:

First, the pre-oxidation process

It is a kind of homochromaticity. The single color is only different in depth and shade. In order to meet the market demand of copper craft components in antique and old, we will tackle the surface color treatment of copper gates. We are dealing with various chemicals such as Screening and experiments on sulfides such as potassium sulphate, ammonium sulphate, sodium sulphate and copper sulphate. It was found that in the pre-oxidation coloring process, the color is unstable, the uniformity is poor, and the adsorption is poor, especially the red bronze color required on the copper door. ideal.

It has been found through research that the formation of an oxide film as a solid surface chemical reaction has a very specific regularity. When an oxide is formed on the surface of the metal, its structure may also retain some structural features of the surface being oxidized. For example, the oxide can be grown epitaxially in a particular orientation of the metal. When the surface of copper is (110), the surface Cu2O has the same orientation, that is, the (110) surface in Cu2O is parallel, and the [110] direction in Cu2O is parallel to the [110] direction of copper. A similar epitaxial growth pattern was observed when the (110) and (111) faces of silver were oxidized to Ag2O. In general, since the actual metal surface, especially the polycrystalline metal surface, often contains many defects: grain boundaries, dislocations, steps, etc., these parts are high in energy, and oxidation tends to start from these high energy positions and then gradually spread to the surrounding area. Until the surface is covered. In addition, since the energy of each part on the surface is different, the thickness of the oxide formed is not the same, that is, the surface oxide film is generally uneven in thickness. There are some high energy locations on the surface. Oxidation (surface chemical reaction) will begin at these locations and will gradually thicken and thicken until the surface energy of the site is lowered to the level of the adjacent sites, forming a so-called "oxide island." Then they expand until the entire surface is covered by oxide. Of course, the expansion of the "oxide island" is still a prerequisite, and one of the conditions is that there must be enough energy to start the oxidation reaction on the solid surface.

Therefore, in the pre-oxidation process of copper, the existence of oxide islands is both an inevitable condition for oxidation and a key problem for the non-uniformity of oxide film caused by peroxidation. The project finisher adjusts in the formula, adds appropriate amount of alkaline neutralizer and in the process of impregnation and oxidation of copper plate, adopts artificial induction method to remove amorphous deposits and multiple impregnation processes, achieving consistent color and stable red color. The bronze effect has achieved excellent results in the bronze doors of the first Bronze Gate on the Shanghai Bund, the Copper Gate of the Bangkok Bank, the Copper Gate of the Hong Kong Hall of the Great Hall of the People and the Leifeng Tower. Pre-oxidation process

Second, the process of combining coating with pre-oxidation

Because the pre-oxidation process is on the color composition of the copper sculpture art, only the same color tone and the problem are solved, and the problem of rich color processing such as complementary color tone, contrast color tone, triangle harmony and double complementary harmony is developed as a color copper sculpture. The problem that needs to be solved urgently. The research team further researched and explored how to integrate the perfect color coating process and pre-oxidation process in modern industry, and create a new process that is more scientific and connotative and can reflect the aesthetic characteristics of copper. The regular mixing of the three primary colors can theoretically display 16.77 million colors to 68.7 billion colors on the computer. The actual color paint preparation, even if it can not reach the above number of color, is also extremely colorful project group for propylene, nitro, The coatings of amino acid, polyester and fluorocarbon have encountered the problem of the color mixing of the pre-oxidized color and the coating color and the influence of the copper plate with the pre-oxidized pattern layer on the adhesion of the coating during the trial production process. How to improve the adsorption of the metal interface and strengthen the interface reaction, which is the key to improve the adhesion of the coating. We changed the process of pre-oxidation coating, firstly etch the copper plate with a thick pattern before activation, using polishing and The emulsifier impregnation method enhances the chemical activity of the metal surface and enhances the adsorption force of the coating. The partial portion of the pattern to be pre-oxidized color is firstly protected. After the color is sprayed, the protective film of the pattern portion is removed and then the pre-oxidation process is followed. The pattern is processed into the antique metal color required by the design. In order to prevent the oxidizing solution from corroding the coating, the product is cleaned by the weak alkali formula and the color purity and color of the coating color are not changed for a long time. The combination of coating and pre-oxidation technology has been well applied in the surface treatment of copper components of Leifeng Tower.

The color bronze sculpture is based on the scientific knowledge of color, and then explores a new art form that integrates color art and metal surface treatment technology from the aesthetic point of view. From the study of color science, since the 17th century, the color science has begun to be summarized internationally. The formation of the surface color of an object depends on three aspects. The illumination of the light source, the object itself reflects a certain color light, and the human retina and brain. The way the visual cortex treats light waves. At the end of the seventeenth century, Newton proved that color does not exist in matter itself, but as a result of light action. As long as the long and short spectra in the visible spectrum are combined to form white light, the wavelength of these visible light can correspond to seven. Different colors: red, orange, yellow, green, blue, blue, purple. In order to produce a specific color, people must rely on the way of increasing or decreasing the light wave to make it receive only certain light waves and feel a certain color. There are usually two ways to handle color: one is additive color method, which mixes light waves of different colors to form white light; the other is subtractive color method, which uses the subtractive mode of CMYK system, that is, the method of reducing light waves to produce color, color The copper carving technique is realized by the subtractive color method. Through the surface treatment technology of copper metal physical and chemical methods, find effective harmonic colors, and use the traditional three primary colors: blue, red, and yellow principles, purposefully using the same color tone, approximate color tone, and complementary color tone, Different blending methods such as triangle blending and double complement blending to achieve the best aesthetic effect. The color copper sculpture is mainly based on the chemical conversion film treatment process on the metal surface, supplemented by the color coating process. The conversion film refers to the anion reaction of the outer layer atoms of the metal surface with the appropriate medium, the film layer formed on the metal surface, and the formation of the conversion film. It is a process of artificially induced and controlled corrosion, that is, the long-term process of oxidative discoloration caused by gradual corrosion under the influence of chemical substances in the atmospheric dust under specific environmental conditions, under the influence of modern technology. It changes color in a short time, and consciously makes its newly changed color not only stable and firm, but also conforms to the required metal conversion film. The color bronze sculpture is studied from the following aspects: First, the pre-oxidation process It is a kind of homochromaticity. The single color is only different in depth and shade. In order to meet the market demand of copper craft components in antique and old, we will tackle the surface color treatment of copper gates. We are dealing with various chemicals such as Screening and experiments on sulfides such as potassium sulphate, ammonium sulphate, sodium sulphate and copper sulphate. It was found that in the pre-oxidation coloring process, the color is unstable, the uniformity is poor, and the adsorption is poor, especially the red bronze color required on the copper door. ideal. It has been found through research that the formation of an oxide film as a solid surface chemical reaction has a very specific regularity. When an oxide is formed on the surface of the metal, its structure may also retain some structural features of the surface being oxidized. For example, the oxide can be grown epitaxially in a particular orientation of the metal. When the surface of copper is (110), the surface Cu2O has the same orientation, that is, the (110) surface in Cu2O is parallel, and the [110] direction in Cu2O is parallel to the [110] direction of copper. A similar epitaxial growth pattern was observed when the (110) and (111) faces of silver were oxidized to Ag2O. In general, since the actual metal surface, especially the polycrystalline metal surface, often contains many defects: grain boundaries, dislocations, steps, etc., these parts are high in energy, and oxidation tends to start from these high energy positions and then gradually spread to the surrounding area. Until the surface is covered. In addition, since the energy of each part on the surface is different, the thickness of the oxide formed is not the same, that is, the surface oxide film is generally uneven in thickness. There are some high energy locations on the surface. Oxidation (surface chemical reaction) will begin at these locations and will gradually thicken and thicken until the surface energy of the site is lowered to the level of the adjacent sites, forming a so-called "oxide island." Then they expand until the entire surface is covered by oxide. Of course, the expansion of the "oxide island" is still a prerequisite, and one of the conditions is that there must be enough energy to start the oxidation reaction on the solid surface. Therefore, in the pre-oxidation process of copper, the existence of oxide islands is both an inevitable condition for oxidation and a key problem for the non-uniformity of oxide film caused by peroxidation. The project finisher adjusts in the formula, adds appropriate amount of alkaline neutralizer and in the process of impregnation and oxidation of copper plate, adopts artificial induction method to remove amorphous deposits and multiple impregnation processes, achieving consistent color and stable red color. The bronze effect has achieved excellent results in the bronze doors of the first Bronze Gate on the Shanghai Bund, the Copper Gate of the Bangkok Bank, the Copper Gate of the Hong Kong Hall of the Great Hall of the People and the Leifeng Tower. Pre-oxidation process Second, the process of combining coating with pre-oxidation Because the pre-oxidation process is on the color composition of the copper sculpture art, only the same color tone and the problem are solved, and the problem of rich color processing such as complementary color tone, contrast color tone, triangle harmony and double complementary harmony is developed as a color copper sculpture. The problem that needs to be solved urgently. The research team further researched and explored how to integrate the perfect color coating process and pre-oxidation process in modern industry, and create a new process that is more scientific and connotative and can reflect the aesthetic characteristics of copper. The regular mixing of the three primary colors can theoretically display 16.77 million colors to 68.7 billion colors on the computer. The actual color paint preparation, even if it can not reach the above number of color, is also extremely colorful project group for propylene, nitro, The coatings of amino acid, polyester and fluorocarbon have encountered the problem of the color mixing of the pre-oxidized color and the coating color and the influence of the copper plate with the pre-oxidized pattern layer on the adhesion of the coating during the trial production process. How to improve the adsorption of the metal interface and strengthen the interface reaction, which is the key to improve the adhesion of the coating. We changed the process of pre-oxidation coating, firstly etch the copper plate with a thick pattern before activation, using polishing and The emulsifier impregnation method enhances the chemical activity of the metal surface and enhances the adsorption force of the coating. The partial portion of the pattern to be pre-oxidized color is firstly protected. After the color is sprayed, the protective film of the pattern portion is removed and then the pre-oxidation process is followed. The pattern is processed into the antique metal color required by the design. In order to prevent the oxidizing solution from corroding the coating, the product is cleaned by the weak alkali formula and the color purity and color of the coating color are not changed for a long time. The combination of coating and pre-oxidation technology has been well applied in the surface treatment of copper components of Leifeng Tower.

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