TW201340906A - Surface treatment method for gold jewelry - Google Patents

Abstract

The present invention provides a gold ornament, the surface of said gold ornament exhibiting gold crystal-structured lines, crystal-textured lines, and criss-crossing crystal lines. The invention is advantageous in that the gold ornament exhibits an extremely smooth surface and a mosaic composition.

Description

Gold ornaments

The present invention relates to the field of gold ornaments, and more particularly to a gold charm or jewelry having a surface texture structure.

In the field of jewelry or jewelry processing and processing technology, gold (especially full gold: gold content of 99.00%-99.95% or more) jewelry products often use different surface treatment techniques to make a lot of different textures and patterns, through Changing the roughness of the surface of the ornament gives the product a different texture, light refraction, reflective structure and vivid color gradation.

A variety of gold jewelry surface processing techniques are provided in the prior art:

Prior art 1: surface treatment technology limited to the range of machining and grinding treatment, for example: using various types of sanding tools to scrape directional etch marks on the surface of the ornament (commonly known as sanding); prior art 2: using earthquake The cones are engraved with different depths of pits, so that the surface has a smashing effect (commonly known as seismic sand); prior art 3: using different coarse and coarse sand particles to pressurize the surface, so that the surface of the decoration has a fine frosting effect and Mild light emission (commonly known as water sand); prior art 4: the surface of the ornament is irregularly ground with a grinding wheel, and the surface of the product is uneven, and the light is shimmering under the illumination of light (commonly known as car sand).

The above four technologies are all commonly used in the art, and their common drawback is All are mechanical processing modes, costing time and the surface texture of the jewelry is not ideal.

The present invention provides a gold charm or jewellery in which the surface of the gold charm exhibits a visually visible gold crystal structure. For example, the visually visible gold crystal structure texture is a microscopic texture of gold that appears after heat treatment.

The invention also provides a method for processing gold ornaments, characterized in that the gold ornaments are first heat-treated, and the crystals are recombined and concentrated to reach the visually visible gold crystal structure lines, and then the electrolysis or electro-erosion treatment is performed. The visually visible gold crystal structure lines are exposed to the surface of the gold charm.

For example, the gold crystal structure grain is a visually visible microscopic crystal structure grain which appears after gold is heat-treated and its crystals are recombined and concentrated.

For example, the gold crystal structure grain may be a crystal structure grain formed by quenching gold after being heated to a temperature higher than 350 ° C.

For example, the heat treatment temperature may be lower than 500 °C.

Preferably, the heat treatment time is from 30 to 60 minutes.

For example, the gold crystal structure grain in the embodiment is heated to a temperature of 400 ° C to 500 ° C, and the crystal structure of the crystal is recrystallized and concentrated.

For example, the visually visible gold crystal structure is gold after heat treatment, and the crystals are recombined and concentrated to a microscopic crystal structure, and then exposed to the surface of the ornament by electrolysis or electro-erosion treatment.

For example, the length of the individual gold crystals of the visually visible gold crystal structure lines Greater than 0.5 mm, for example, greater than 1 mm.

For example, the individual gold crystals of the visually visible gold crystal structure grain have a width greater than 0.5 mm, such as greater than 1 mm.

For example, the individual crystal lengths and widths of the visually visible gold crystal structure lines are less than 4 mm.

For example, the individual crystal areas of the visually visible gold crystal structure lines are greater than 0.25 mm ² .

For example, the individual crystal areas of the visually visible gold crystal structure lines are less than 4 mm ² .

For example, the gold crystal structure grain includes crystal grains having different growth directions and criss-crossing.

For example, the visible gold crystal structure lines of the gold charm constitute a mosaic pattern structure. Each of the gold crystals that make up the mosaic pattern structure itself forms a "mosaic" reflective surface. The "mosaic" reflective surface is a gold mosaic reflecting surface that is visually visible. The direction of each "mosaic" reflective surface is different or different. When combined, each piece of "mosaic" will change the effect of the flash as it rotates, resulting in a brighter, more dazzling golden glow.

For example, the gold ornaments have a gold content of 99.00% or more.

Preferably, the crystal structure texture includes the size and shape of the irregular crystal.

Preferably, the crystal structure grain includes a boundary grain of an irregular crystal.

Preferably, the crystal structure grain comprises a texture pattern of crystals.

Preferably, the crystal structure texture is heated to gold to a crystal grain structure having a temperature of 400 ° C to 500 ° C.

Preferably, the gold ornaments have a gold content of 99.00%-99.95%.

Preferably, the gold ornaments have a gold content of 99.95% or more.

The invention also provides a treatment method for saving man-hours and having a better gold ornament surface texture, which is an electrochemical treatment of gold ornaments.

The method for treating the surface of the gold ornaments includes: inserting an anode and a cathode into the electrolyte, connecting the gold ornaments to the anode and placing the anode in the electrolyte; and energizing the anode and the cathode to perform the electrolysis The liquid is subjected to electrolysis; wherein, during the electrolysis, a current is generated, and the exchange of electrons of the current converts the gold on the surface of the gold ornaments from an atomic state to an ionic state, so that gold on the surface of the gold ornaments is etched, and the surface of the gold ornaments The crystal structure of gold is presented.

Preferably, the cathode is a platinum titanium mesh.

Preferably, the electrolyte in the electrolyte comprises: a silver salt, a trace amount of potassium hydroxide, potassium carbonate, potassium cyanide; wherein the content of the silver salt is 54%.

Preferably, the temperature during electrolysis is 39 ° C, the electrolysis time is 60 minutes, and the current density of the current generated is from 0.01 A/dm ² to 0.03 A/dm ² .

Preferably, the method further comprises: heat treating the gold charm before electrolyzing the electrolyte.

Preferably, the method further comprises: electrolyzing the electrolyte The temperature at which the gold charm is heat-treated is 400 ° C to 500 ° C.

Preferably, the method further comprises: after electrolyzing the electrolyte, sequentially washing the gold ornaments with water or hydrochloric acid.

The invention has the beneficial effects that the processing method of the surface of the gold ornaments has been separated from the existing machining mode, and the processing process is electrochemically processed, which saves man-hours and has better surface texture. The treated trim workpiece not only presents a very smooth surface, but also presents the most primitive crystal structure of gold. This includes the size and shape of the crystal, the boundaries of the crystal, its structure, and the like. In addition, the growth direction of the crystals is often different, criss-crossing, and thus each forms a light-refracting surface, which gives the surface brightness and darkness a unique change in brightness and darkness. The combination is like a mosaic composition, and the texture is unique. And because the crystal lattice texture of each product depends on its metal structure, the color surface of each product is unique.

1‧‧‧Anode

2‧‧‧ cathode

3‧‧‧ electrolyte

4‧‧‧ Container

5‧‧‧Gold ornaments

6‧‧‧ Positive terminal of the power supply

7‧‧‧Negative terminal of the power supply

100‧‧‧Gold ornaments

110‧‧‧Gold main body

120‧‧‧ outer surface

130‧‧‧ crystal structure

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the embodiments or the drawings used will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For the technicians, other drawings can be obtained based on these drawings without paying for creative labor.

Figure 1 is a perspective view of a gold charm; Figure 2 is a front view of the gold charm of Figure 1; Figure 3 is a cross-sectional view of the gold charm of Figure 2 along the line AA; Figure 4 is a surface texture diagram of the gold charm of Figure 1; It is a partial enlarged view of the surface texture of Fig. 4.

FIG. 6 is a schematic view showing the gold ornaments placed in an electrolyte according to an embodiment of the present invention.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The gold charm 100 shown in Figures 1 through 5 includes a gold body 110 and an outer surface 120 thereof. The outer surface 120 of the gold charm 100 is smooth but exhibits a gold crystal structure pattern 130. The crystal structure grain 130 includes crystals having different growth directions and criss-crossing. The crystal structure grain 130 mainly includes gold crystals which are visually visible and criss-crossed. The aggregation of the gold crystals integrally constitutes a mosaic pattern, in particular, a light-refracting surface composed of gold crystals which are visually visible and criss-crossed.

As shown in Figures 4 and 5, individual gold crystals have an irregular shape, but their individual lengths and widths are mostly greater than 1 mm. For example, the gold crystal example shown in Figure 5 has a length and width of 1.736 mm x 1.313 mm. Other examples of gold crystals are 1.623 mm, 2.473 mm, and 3.377 mm. Of course, some gold crystals also have a length or width of less than 1 mm.

FIG. 6 is a schematic view showing the placement of a gold charm in an electrolyte according to an embodiment of the present invention. The following is an example of a treatment method for achieving the surface texture of the gold ornaments of the present invention: in step S101, the anode 1 and the cathode 2 are inserted into the electrolyte 3, and the gold ornaments 5 are connected to the anode 1 幷 in the electrolyte 3 (please Referring to Fig. 6, the gold charm 5 is represented by a black ring, but the present invention is not limited by this shape; the anode 1 is columnar, but the present invention is not limited by this shape; the cathode 2 is plate-shaped, but the present invention The shape is not limited by this shape; wherein the electrolyte 3 is placed in the container 4 (for example, an electrolytic cell or other container). One anode 1 and two cathodes 2 are shown in Fig. 6, but the present invention is not limited to this number.

In step S102, the anode 1 and the cathode 2 are energized to electrolyze the electrolyte; as shown in Fig. 6, the anode 1 is connected to the positive terminal 6 of the power source, and the cathode 2 is connected to the negative terminal 7 of the power source.

Wherein, a current is generated during the electrolysis process, and the electron exchange of the current converts the gold on the surface of the gold ornaments from an atomic state to an ionic state, so that gold on the surface of the gold ornaments is etched, and the surface of the gold ornaments exhibits gold. The crystal structure, for example, can be etched to a depth of about 2-30 microns.

It should be noted that in order to ensure that metal or organic contamination affects the operation, it must be kept clean during operation.

Preferably, the cathode is a platinum titanium mesh.

Preferably, the electrolyte in the electrolyte comprises: a silver salt, a trace amount of potassium hydroxide, potassium carbonate, potassium cyanide; wherein the content of the silver salt is about 54%.

Preferably, the temperature during electrolysis is 30-39 ° C, the electrolysis time is 30-60 minutes, and the current density of the current generated is 0.01 A/dm ² to 0.03 A/dm ² .

Preferably, the method further comprises the step S103 of: heating the gold charm before performing electrolysis on the electrolyte.

Preferably, the temperature at which the gold charm is heat-treated is 400 ° C to 500 ° C. Heat treatment at this temperature, the crystal of gold will be deliberately reorganized and amplified, the length of the heating time also directly affects the size of the crystal, the ideal visible area of the crystal is 0.05mm ² to 0.25mm ² . Preferably, the heat treatment time is about 30-60 minutes. It is preferred to carry out quenching after the heat treatment.

Preferably, the method further comprises the step S104: after electrolyzing the electrolyte, the gold ornaments are sequentially washed with water and hydrochloric acid.

Thus, the processing method of the surface finish of the gold ornaments has been separated from the existing machining mode, and the processing thereof is electrochemically processed, which saves man-hours and has better surface texture. The treated trim workpiece not only presents a very smooth surface, but also presents the most primitive crystal structure of gold. This includes the size and shape of the crystal, the boundaries of the crystal, its structure, and the like. In addition, the growth direction of the crystals is often different, criss-crossing, and thus each forms a light-refracting surface, which gives the surface brightness and darkness a unique change in brightness and darkness. The combination is like a mosaic composition, and the texture is unique. And because the crystal lattice texture of each product depends on its metal structure, the color surface of each product is unique.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the components in the drawings are not necessarily required to implement the invention.

Those skilled in the art can understand that the components in the embodiments can be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes can be located in one or more devices different from the embodiment. The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

The principles and embodiments of the present invention have been described in connection with the specific embodiments of the present invention. The description of the above embodiments is only for the understanding of the method of the present invention and the core idea thereof. At the same time, for those skilled in the art, according to the present invention The present invention is not limited by the scope of the present invention.

130‧‧‧ crystal structure

Claims (14)

A gold charm characterized in that the surface of the gold charm exhibits a visually visible gold crystal structure texture. The gold ornaments according to claim 1, wherein the visually visible gold crystal structure lines are microscopic crystal structure lines which appear after the heat treatment of gold. The gold ornaments according to claim 1, wherein the gold crystal structure is a visually visible microscopic crystal structure grain after the crystals are heat-treated and the crystals are recombined and concentrated. The gold ornaments according to claim 1, wherein the gold crystal structure is heated to a temperature of 400 ° C to 500 ° C, and the crystals are crystallized by recombination and aggregation. Structure texture. The gold ornaments according to claim 1, wherein the visually visible gold crystal structure is gold after heat treatment, and the crystals are recombined and concentrated to a microscopic crystal structure, and then electrolyzed or The etch treatment exposes it to the surface of the ornament. The gold charm of claim 1, wherein the individual gold crystals of the visually visible gold crystal structure are longer than 1 mm in length and width. The gold charm of claim 1, wherein the individual crystal length and width of the visually visible gold crystal structure are less than 4 mm. The gold ornaments according to claim 1, wherein the individual crystal areas of the gold crystal structure lines are more than 0.25 mm 2 . A gold charm as claimed in claim 1, characterized in that the visually visible gold The individual crystal areas of the crystal structure lines are less than 4 mm 2 . The gold ornaments according to claim 1, wherein the gold crystal structure lines include crystal lines having different growth directions and criss-crossing. The gold charm according to any one of claims 1 to 10, wherein the visible gold crystal structure of the gold charm constitutes a mosaic pattern structure. The gold ornaments according to any one of claims 1 to 10, wherein the gold ornaments have a gold content of 99.00% or more. The invention relates to a method for treating gold ornaments, which is characterized in that the gold ornaments are first heat-treated, and the crystals are recombined and concentrated to reach a visually visible gold crystal structure, and then the gold crystals visible by electrolysis or electro-erosion treatment are made. The structural lines are exposed to the surface of the gold charm. The processing method of claim 13, wherein the electrolytic or electrolytic etching treatment exposes a visible gold crystal structure pattern of 2-30 micrometers under the surface of the gold charm to the surface of the finished product.