Silver-in-gold carving process and silver-in-gold product

Abstract

The invention discloses a silver-in-gold carving process and a silver-in-gold product, and relates to the technical field of precious metal ornament manufacturing. The gold-clad silver carved pattern process comprises the following steps: S1, pretreatment: pretreating the surface of a silver blank to remove an oxide layer; s4, gold coating: coating the surface of the silver blank with a gold skin; s5, compaction is conducted, specifically, the gold skin and the silver blank are compacted; s8, carving: carving pocking marks on the surface of the gold skin, so that the gold skin is embedded into the silver blank; and S9, secondary compaction is conducted, specifically, the gold skin and the silver blank are subjected to secondary compaction. Between the step S5 and the step S8, the method also comprises the following steps: S6, hole passing; and S7, wire drawing. S2, tabletting is carried out between the step S1 and the step S4, and gold is pressed into gold skin; and S3, annealing. The gold-clad silver product is manufactured by the gold-clad silver carving process. By the adoption of the technical scheme, the method has the advantages that the gold skin and the silver blank are tightly attached, skin falling is not likely to happen, and hollowing is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of precious metal ornament production, and in particular to a gold-clad silver engraving process and a gold-clad silver product. Background Art

[0002] The gold-plated silver process is a surface decoration technology applied to gold-plated silver products. It mainly uses special process methods to wrap gold (usually pure gold, pure gold, and colored gold, etc.) on the surface of a silver base to form a gold-plated silver product with a different surface and internal material. The traditional gold-plated silver process generally adopts manual knocking, inlaying or electroplating methods to make the outer layer of gold fit on the surface of the silver base. However, the gold-plated silver products formed by these methods are prone to hollowing, loose fitting, etc., which affects the appearance, aesthetics and normal sales of the gold-plated silver products. Summary of the invention

[0003] The purpose of the present invention is to provide a gold-clad silver engraving process and a gold-clad silver product in view of the defects and shortcomings of the prior art, which has the advantages of close fitting of the gold skin and the silver blank, not easy to peel off and avoiding hollowing.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a gold-plated silver engraving process, comprising the following steps:

[0005] S1, pretreatment, pretreatment of the silver blank surface to remove the oxide layer;

[0006] S4, gold plating, wrapping the surface of the silver blank with gold skin;

[0007] S5, compacting, compacting the gold skin and the silver blank;

[0008] S8, engraving, carving pits on the surface of the gold sheet to make the gold sheet embedded in the silver blank;

[0009] S9, secondary compaction, the gold skin and the silver blank are compacted for the second time.

[0010] The present invention is further configured to include the following steps between step S5 and step S8:

[0011] S6, vias;

[0012] S7, pull the wire.

[0013] The present invention is further configured to include between step S1 and step S4:

[0014] S2, pressing the gold into gold skin;

[0015] S3. Annealing.

[0016] The present invention is further arranged that, in step S5, an agate knife is used to compact the gold skin and the silver blank.

[0017] The present invention is further configured to, after step S9, further include: S10, adding a protective layer, adding a protective layer on the surface of the gold skin to obtain a gold-clad silver product.

[0018] To achieve the above object, another technical solution adopted by the present invention is: a gold-plated silver product is made by the gold-plated silver engraving process mentioned above.

[0019] The present invention is further provided, comprising: a silver blank, a gold skin wrapped on the surface of the silver blank, and pitting arranged between the gold skin and the silver blank.

[0020] The present invention is further arranged that a protective layer is also arranged on the surface of the gold skin.

[0021] After adopting the above technical solution, the beneficial effect of the present invention is as follows: in the present invention, after the gold skin and the silver blank are compacted, the gold skin is engraved with a pockmark pattern on the surface, so that the gold skin is embedded in the silver blank, the fit between the gold skin and the silver blank is increased, and then the gold skin is compacted again, so that the gold skin and the silver blank are more closely fitted, and it is not easy to peel off and hollowing is avoided. At the same time, the beauty of the overall appearance can also be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a flow chart of the steps of the gold-plated silver engraving process;

[0024] Figure 2 This is another step flow chart of the gold-plated silver engraving process;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of a gold-plated silver product with some pitting.

[0026] Explanation of the accompanying reference numerals: 100, silver blank; 200, gold skin; 300, pockmarks. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0029] This embodiment relates to a gold-plated silver engraving process, referring to Figure 1 , including the following steps:

[0030] S1, pretreatment, pretreatment of the surface of the silver blank 100 to remove the oxide layer;

[0031] S4, gold coating, coating the surface of the silver blank 100 with a gold coating 200;

[0032] S5, compacting, compacting the gold skin 200 and the silver blank 100;

[0033] S8, engraving, engraving pits 300 on the surface of the gold sheet 200, so that the gold sheet 200 is embedded in the silver blank 100;

[0034] S9, secondary compaction, performing secondary compaction on the gold skin 200 and the silver blank 100.

[0035] Among them, in step S1, the surface of the silver blank 100 is pretreated first to remove the oxide layer, so that the surface of the silver blank 100 remains smooth, the bonding force between the subsequent gold skin 200 and the silver blank 100 is increased, and the problem of loose bonding caused by the presence of the oxide layer is reduced, so as to ensure that the gold skin 200 can be better attached to the silver blank 100. In step S4, the gold skin 200 is wrapped on the surface of the silver blank 100 to achieve aesthetics and avoid the inner layer of the silver blank 100 from oxidizing too quickly. In step S5, the gold skin 200 and the silver blank 100 are compacted to make the two fit better. Specifically, an agate knife is used to compact the gold skin 200 and the silver blank 100. Among them, heating can also be used to assist in making the gold skin 200 and the silver blank 100 fit better. It is explained here that engraving is a process of using a set of chisels with various basic patterns to hammer the chisels to make the metal surface present a concave and convex pattern. In step S8, pits 300, i.e., concave and convex patterns, are engraved on the surface of the gold sheet 200 by engraving, so that the gold sheet 200 is embedded in the silver blank 100, further increasing the bonding force between the gold sheet 200 and the silver blank 100, making it difficult to peel and avoid hollowing. Specifically, pits 300 can be engraved on the surface of the gold sheet 200 in whole or in part, so that the gold sheet 200 in whole or in part is embedded in the silver blank 100.

[0036] After engraving, step S9 is performed, that is, secondary compaction, which can be performed by heating, agate knife compaction, etc. The gold-plated silver engraving process can not only increase the fit between the gold skin 200 and the silver blank 100, making the two fit more closely, not easy to peel off and avoid hollowing, but also maintain the overall aesthetics and wear resistance.

[0037] Further, refer to Figure 2 , between step S5 and step S8, the following steps are also included: S6, through hole; S7, wire drawing. In this embodiment, the gold-clad silver product is annular, and the size and diameter of the gold-clad silver product can be controlled by pulling the annular gold-clad silver product through the hole, and at the same time, the tight compaction between the gold skin 200 and the silver blank 100 can be achieved, and the fit between the gold skin 200 and the silver blank 100 is strengthened. Further, between step S1 and step S4, the following steps are also included: S2, sheeting, pressing the gold into the gold skin 200; S3, annealing. The gold raw material is pressed into the gold skin 200 by a sheet press, and the area of ​​the gold skin 200 is greater than or equal to the surface of the silver blank 100, ensuring that the silver blank 100 can be completely wrapped, and the flatness of the gold skin 200 itself is ensured. In addition, the thickness of the gold skin 200 is set according to user needs. Annealing refers to heating the gold skin 200 to a certain temperature and then slowly cooling it, and placing it at a constant temperature for a certain period of time to improve the grain morphology and structural stability of the gold skin 200. Annealing can improve the ductility and strength of the gold skin 200 and reduce its brittleness. The annealing temperature of the gold skin 200 is generally 600-800°C, and the annealing time is generally several hours to ensure the increase of the grain size of the gold skin 200 and the elimination of internal stress. In some embodiments, the annealing temperature and annealing time are adaptively adjusted according to the thickness and material of the gold skin. After annealing, the following steps may also be included: acid blasting. This step is used to remove surface impurities of the gold skin 200, improve the purity of the surface of the gold skin 200, and ensure the smoothness of the appearance of the gold skin 200.

[0038] In this embodiment, refer to Figure 2 After step S9, the method further includes: S10, adding a protective layer, adding a protective layer on the surface of the gold skin 200 to obtain a gold-clad silver product. The protective layer reduces the friction and damage of the gold-clad silver product during daily wear, and also serves to isolate air and reduce the risk of gold oxidation. The material of the protective layer can be any one of resin, alloy and nano-ceramic coating.

[0039] This embodiment also relates to a gold-plated silver product, referring to Figure 3, which is made by the above-mentioned gold-clad silver engraving process. The gold-clad silver product has the advantage of not being easy to fade. The gold-clad silver product comprises: a silver blank 100, a gold skin 200 wrapped on the surface of the silver blank 100, and pits 300 arranged between the gold skin 200 and the silver blank 100. It should be noted that the pits 300 refer to a small and dense dot-shaped depression that is knocked out on the surface of the gold skin 200 by an engraving tool in step S8. The pits 300 play a role in increasing the fit between the gold skin 200 and the silver blank 100. The pits 300 can be engraved on all or part of the gold skin 200 so that all or part of the gold skin 200 is embedded in the silver blank 100.

[0040] In some embodiments, a protective layer is further provided on the surface of the gold skin 200 to prevent the gold skin 200 from being damaged due to oxidation and excessive friction.

[0041] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A gold-plated silver engraving process, characterized in that: The following steps are involved: S1, pretreatment, pretreatment of the surface of the silver blank (100) to remove the oxide layer; S4, gold coating, coating the surface of the silver blank (100) with a gold sheet (200); S5, compacting, compacting the gold skin (200) and the silver blank (100); S8, engraving, engraving pits (300) on the surface of the gold sheet (200), so that the gold sheet (200) is embedded in the silver blank (100); S9, secondary compaction, performing secondary compaction on the gold skin (200) and the silver blank (100).

2. The gold-plated silver engraving process according to claim 1 is characterized in that: Between step S5 and step S8, the following steps are also included: S6, vias; S7, pull the wire.

3. The gold-plated silver engraving process according to claim 1 is characterized in that: Also included between step S1 and step S4: S2, pressing the gold into a gold sheet (200); S3. Annealing.

4. The gold-plated silver engraving process according to claim 1, characterized in that: In step S5, the gold skin (200) and the silver blank (100) are compacted using an agate knife.

5. The gold-plated silver engraving process according to claim 1 is characterized in that: After step S9, the method further includes: S10, adding a protective layer, adding a protective layer on the surface of the gold skin (200) to obtain a gold-clad silver product.

6. A gold-plated silver product, characterized in that: It is made by the gold-clad silver engraving process described in any one of claims 1-5.

7. The gold-clad silver product according to claim 6, characterized in that: include: A silver blank (100), a gold skin (200) wrapped around the surface of the silver blank (100), and pitting (300) arranged between the gold skin (200) and the silver blank (100).

8. The gold-clad silver product according to claim 7, characterized in that: The surface of the gold skin (200) is also provided with a protective layer.

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