Silver-in-gold welding method

Abstract

The invention discloses a gold-in-silver welding method, and belongs to the technical field of gold-in-silver product processing, the gold-in-silver welding method comprises a silver base layer and a gold wrapping layer, the silver base layer is of a columnar structure, the outer side of the silver base layer is tightly attached and wrapped with the gold wrapping layer, the gold wrapping layer is of a cylindrical structure, and the whole silver base layer is curled to be of an annular structure; the silver-based layers are connected end to end, the gold-coated layers are connected end to end, and the end-to-end connection of the silver-based layers and the end-to-end connection of the gold-coated layers are fixedly connected in a welding manner. According to the gold-in-silver welding method, additional welding flux is not needed, material waste can be reduced, so that the production cost is reduced, no obvious welding marks exist at the welded connector, the overall attractiveness of the gold-in-silver jewelry is kept, the surface is free of folding marks and white exposure, welding is firm, impurities do not exist in detection, the original gloss and texture of gold and silver are reserved to the maximum extent, and the service life of the gold-in-silver jewelry is prolonged. And the welded jewelry is more delicate.

Description

Technical Field

[0001] The invention relates to the technical field of gold-plated silver product processing, in particular to a gold-plated silver welding method. Background Art

[0002] Gold-clad silver products are alloy crafts with silver as the main material inside and a layer of gold wrapped on the outside. Gold (usually pure gold or high-purity gold) is tightly wrapped on the outside or inside of silver (usually pure silver or high-purity silver) through specific process means, such as welding, electroplating or mechanical pressing, to form a product with a gold-clad silver structure. The principle of this process is to use the difference in physical and chemical properties of gold and silver to achieve a close combination of the two metals through specific technical means;

[0003] Gold-plated silver products form a unique color contrast and gloss effect through the ingenious combination of gold and silver. The golden luster of gold and the silver texture of silver complement each other, making the products more visually eye-catching, adding a sense of luxury and fashion. This unique visual effect makes gold-plated silver products have a wide range of application prospects in the fields of jewelry, artworks and collectibles, and fashion accessories.

[0004] The welding of gold-plated silver products is a delicate and complex process. It combines the characteristics of two precious metals, gold and silver, and firmly combines them together through welding technology. There are many ways to weld gold-plated silver, including laser welding, water-flow welding and other welding methods. When choosing a welding method, it is necessary to make comprehensive considerations based on specific needs and conditions. At the same time, during the welding process, it is necessary to strictly control the welding temperature and time, pay attention to safety protection measures, and choose good quality materials to ensure welding quality.

[0005] Gold-clad silver is a composite of two metals with different thermal melting coefficients. Traditional welding uses flux for welding. However, the welding process easily causes the molten silver to flow out, and there is residual flux, which leads to unqualified inspection, and there are certain defects. Summary of the invention

[0006] The purpose of the present invention is to provide a gold-plated silver welding method to solve the problem that the traditional welding of gold-plated silver products on the market currently uses flux for welding, but the welding process easily causes the silver melt to flow out, and there is residual flux resulting in unqualified inspection.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a gold-coated silver product, comprising a silver base layer and a gold-coated layer, wherein the silver base layer is arranged in a columnar structure, and the outer side of the silver base layer is tightly wrapped with the gold-coated layer, and the gold-coated layer is arranged in a cylindrical structure.

[0008] Further preferably, the silver-based layer is curled as a whole into a ring structure, and the silver-based layer is connected end to end, and the gold-coated layer is connected end to end, and the raw material of the gold-coated layer is Au99-Au999, and the raw material of the silver-based layer is Ag99-Ag999.

[0009] Further preferably, the silver-based layer is connected end to end and the gold-clad layer is connected end to end and fixedly connected by welding.

[0010] Gold-plated silver welding method, the specific steps are as follows:

[0011] Step 1: Docking

[0012] Butt and fix the ends of the gold-clad silver products together to ensure the coaxiality between the butt ends;

[0013] Step 2: Water soldering

[0014] Heat the water and use the ductility of gold to overlap the two ends of the gold skin to form a closed tubular structure;

[0015] Step 3: Local heating to melt silver

[0016] Adjust the welding tool flame to be slender, control the temperature to 960℃~1040℃, shake the welding tool to preheat the end of the product for 1-6 seconds, and continue heating to make the internal silver core hot-melt and use the partial melting and liquefaction of the silver billet to achieve welding;

[0017] Step 4: Plastic surgery

[0018] After welding is completed, use double-sided C-shaped clamps to clamp the workpiece and perform shaping operations;

[0019] Step 5: Micro plastic surgery

[0020] Partial shaping is done through secondary water drainage;

[0021] Step 6: Cooling is complete

[0022] After natural air cooling, it is immersed in cooling water for rapid cooling.

[0023] Further preferably, the ends of the gold-clad silver product are arranged in a ring shape as a whole after being butted together, and the outer walls of the two ends are flush after being butted together.

[0024] Further preferably, during the heating and water flow process, a flame spray gun is used to evenly roast the end connection of the gold-clad silver product, and surrounding burning is used to ensure uniform heating and water flow.

[0025] Further preferably, the C-shaped clamp becomes an arc after mold closing, and the C-shaped clamp fits against the outer wall of the gold-clad silver product to achieve positioning and shaping of the gold-clad silver product, preventing loosening during the shaping process and reducing the shaping accuracy, and the clamping surface of the C-shaped clamp is affixed with a buffer rubber pad to avoid wear on the surface of the gold-clad silver product.

[0026] Further preferably, the heating time during the silver melting process should not be too long to avoid a large melting area of ​​the gold skin after heating and causing dripping, and excessive swinging of the flame should be avoided during the heating process.

[0027] Compared with the prior art, the invention has the following beneficial effects: the gold-plated silver welding method does not require additional solder, and there will be no obvious welding marks at the interface after welding, thereby maintaining the overall beauty of gold and silver jewelry, without overlapping marks on the surface, without whitening, and the welding is firm, without impurities, and the original luster and texture of gold and silver are retained to the greatest extent, making the jewelry more refined after welding;

[0028] 1. Gold-clad silver water-flow welding does not require additional solder, and there will be no obvious welding marks at the interface after welding, thus maintaining the overall beauty of gold and silver jewelry, achieving traceless welding, and high welding precision. Due to proper temperature control during welding, the original luster and texture of gold and silver can be retained to the greatest extent, making the jewelry more exquisite after welding;

[0029] 2. The weld formed by gold-clad silver water-flow welding has high strength, which can ensure the firmness and durability of the jewelry. The gold and silver jewelry after welding is not easy to deform or crack, and can still maintain a good condition after long-term wear, with good stability;

[0030] 3. No additional solder is required. Gold-clad silver water-flow welding can reduce material waste, thereby reducing production costs, avoiding the problem of silver melt outflow easily caused by the welding process, and the problem of residual solder causing unqualified inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic flow chart of the gold-plated silver welding method of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1: The present invention provides the following technical solution: A gold-coated silver product, comprising a silver base layer and a gold-coated layer, wherein the silver base layer is arranged in a columnar structure, and the outer side of the silver base layer is tightly wrapped with the gold-coated layer, and the gold-coated layer is arranged in a cylindrical structure.

[0034] The silver base layer is curled as a ring structure, and the silver base layer is connected head to tail, and the gold-coated layer is connected head to tail. Meanwhile, the raw material of the gold-coated layer is Au99-Au999, and the raw material of the silver base layer is Ag99-Ag999.

[0035] The silver-based layer is connected end to end and the gold-clad layer is connected end to end to be fixedly connected by welding.

[0036] Gold-clad silver water-through welding does not require additional solder, and there will be no obvious weld marks at the interface after welding, thus maintaining the overall beauty of the gold and silver jewelry, achieving traceless welding, and high welding precision. Due to proper temperature control during the welding process, the original luster and texture of gold and silver can be retained to the greatest extent, making the jewelry more refined after welding.

[0037] Embodiment 2: Based on Embodiment 1, a gold-plated silver welding method is also disclosed, such as Figure 1 As shown, the specific steps are as follows:

[0038] Step 1: Docking

[0039] Butt and fix the ends of the gold-clad silver products together to ensure the coaxiality between the butt ends;

[0040] Step 2: Water soldering

[0041] Heat the water and use the ductility of gold to overlap the two ends of the gold skin to form a closed tubular structure;

[0042] Step 3: Local heating to melt silver

[0043] Adjust the welding tool flame to be slender, control the temperature to 960℃, shake the welding tool to preheat the end of the product for 3 seconds, heat the interface locally to the melting point of gold, melt the gold skin locally, and fuse the interface together; continue heating to melt the internal silver core and use the partial melting and liquefaction of the silver billet to achieve welding;

[0044] Step 4: Plastic surgery

[0045] After welding is completed, use double-sided C-shaped clamps to clamp the workpiece and perform shaping operations;

[0046] Step 5: Micro plastic surgery

[0047] Partial shaping is done through secondary water drainage;

[0048] Step 6: Cooling is complete

[0049] After natural air cooling, it is immersed in cooling water for rapid cooling.

[0050] After the ends of the gold-clad silver product are butt-jointed, the overall arrangement is in a ring shape, and the outer walls of the two ends are flush after the butt joint.

[0051] During the heating and water flow process, a flame spray gun is used to evenly roast the end connections of the gold-clad silver products, and a surrounding burning method is used to ensure uniform heating and water flow.

[0052] The C-shaped fixture is arc-shaped after mold closing, and the C-shaped fixture is attached to the outer wall of the gold-plated silver product to achieve the positioning and shaping of the gold-plated silver product, preventing loosening during the shaping process and reducing the shaping accuracy. In addition, the clamping surface of the C-shaped fixture is pasted with a buffer rubber pad to prevent the surface of the gold-plated silver product from being worn;

[0053] The heating time during the silver melting process should not be too long to avoid a large melting area of ​​the gold skin and dripping, and the flame should not shake too much during the heating process.

[0054] Embodiment 3: Also disclosed is a gold-coated silver product, comprising a silver base layer and a gold-coated layer, wherein the silver base layer is arranged in a columnar structure, and the outer side of the silver base layer is tightly wrapped with the gold-coated layer, and the gold-coated layer is arranged in a cylindrical structure.

[0055] The silver base layer is curled as a ring structure, and the silver base layer is connected head to tail, and the gold-coated layer is connected head to tail. Meanwhile, the raw material of the gold-coated layer is Au99-Au999, and the raw material of the silver base layer is Ag99-Ag999.

[0056] The silver-based layer is connected end to end and the gold-clad layer is connected end to end to be fixedly connected by welding.

[0057] A gold-plated silver welding method is also disclosed, and the specific method steps are as follows:

[0058] Step 1: Docking

[0059] Butt and fix the ends of the gold-clad silver products together to ensure the coaxiality between the butt ends;

[0060] Step 2: Water soldering

[0061] Heat the water and use the ductility of gold to overlap the two ends of the gold skin to form a closed tubular structure;

[0062] Step 3: Local heating to melt silver

[0063] Adjust the welding tool flame to be slender, control the temperature to 1040℃, shake the welding tool to preheat the end of the product for 6 seconds, heat the interface locally to the melting point of gold, melt the gold skin locally, and fuse the interface together; continue heating to melt the internal silver core and use the local melting and liquefaction of the silver billet to achieve welding;

[0064] Step 4: Plastic surgery

[0065] After welding is completed, use double-sided C-shaped clamps to clamp the workpiece and perform shaping operations;

[0066] Step 5: Micro plastic surgery

[0067] Partial shaping is done through secondary water drainage;

[0068] Step 6: Cooling is complete

[0069] After natural air cooling, it is immersed in cooling water for rapid cooling.

[0070] After the ends of the gold-clad silver product are butt-jointed, the overall arrangement is in a ring shape, and the outer walls of the two ends are flush after the butt joint.

[0071] During the heating and water flow process, a flame spray gun is used to evenly roast the end connections of the gold-clad silver products, and a surrounding burning method is used to ensure uniform heating and water flow.

[0072] The C-shaped clamp becomes an arc after the mold is closed, and the C-shaped clamp fits the outer wall of the gold-plated silver product to achieve the positioning and shaping of the gold-plated silver product, preventing loosening during the shaping process and reducing the shaping accuracy. In addition, the clamping surface of the C-shaped clamp is pasted with a buffer rubber pad to avoid wear on the surface of the gold-plated silver product.

[0073] The heating time during the silver melting process should not be too long to avoid a large melting area of ​​the gold skin and dripping, and the flame should not shake too much during the heating process.

[0074] No additional solder is required, and there will be no obvious welding marks at the interface after welding, thus maintaining the overall beauty of gold and silver jewelry, with no overlapping marks on the surface, no whitening, and the welding is firm and free of impurities, preserving the original luster and texture of gold and silver to the greatest extent, making the jewelry more exquisite after welding;

[0075] The weld formed by gold-clad silver water-flow welding has high strength, which can ensure the firmness and durability of the jewelry. The gold and silver jewelry after welding is not easy to deform or crack, and can remain in good condition after long-term wear, with good stability. No additional solder is required. Gold-clad silver water-flow welding can reduce material waste, thereby reducing production costs, and avoids the problem of silver melt outflow caused by the welding process, and the existence of residual solder causing unqualified inspections.

[0076] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0077] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gold-plated silver welding method, characterized in that: The following steps are involved: Step 1: Docking Butt and fix the ends of the gold-clad silver products together to ensure the coaxiality between the butt ends; Step 2: Water soldering Heat the water and use the ductility of gold to overlap the two ends of the gold skin to form a closed tubular structure; Step 3: Local heating to melt silver Adjust the welding tool flame to be slender, control the temperature to 960℃~1040℃, shake the welding tool to preheat the end of the product for 1-6 seconds, and continue heating to make the internal silver core hot-melt and use the partial melting and liquefaction of the silver billet to achieve welding; Step 4: Plastic surgery After welding is completed, use double-sided C-shaped clamps to clamp the workpiece and perform shaping operations; Step 5: Micro plastic surgery Partial shaping is done through secondary water drainage; Step 6: Cooling is complete After natural air cooling, it is immersed in cooling water for rapid cooling.

2. A gold-plated silver welding method according to claim 1, characterized in that: In the heating and water flow process, a flame spray gun is used to evenly roast the end connection of the gold-clad silver product, and a surrounding burning method is used to ensure uniform heating and water flow.

3. A gold-plated silver welding method according to claim 1, characterized in that: The C-shaped clamp is formed into an arc shape after the mold is closed, and the C-shaped clamp is attached to the outer wall of the gold-clad silver product to achieve positioning and shaping of the gold-clad silver product, preventing loosening during the shaping process and reducing the shaping accuracy, and the clamping surface of the C-shaped clamp is pasted with a buffer rubber pad to avoid wear on the surface of the gold-clad silver product.

4. A gold-plated silver welding method according to claim 1, characterized in that: The heating time during the silver melting process should not be too long to avoid a large melting area of ​​the gold skin and dripping, and excessive swinging of the flame should be avoided during the heating process.

5. The gold-plated silver welding method according to claim 1, characterized in that: The gold-coated silver product in the first step includes a silver base layer and a gold-coated layer, wherein the silver base layer is arranged in a columnar structure, and the outer side of the silver base layer is tightly wrapped with the gold-coated layer, and the gold-coated layer is arranged in a cylindrical structure.

6. A gold-plated silver welding method according to claim 5, characterized in that: The silver base layer is curled as a whole into a ring structure, and the silver base layer is connected end to end, and the gold-coated layer is connected end to end. At the same time, the raw material of the gold-coated layer is Au99-Au999, and the raw material of the silver base layer is Ag99-Ag999.

7. A gold-plated silver welding method according to claim 5, characterized in that: The silver-based layer is connected end to end and the gold-clad layer is connected end to end and fixedly connected by welding.

8. The gold-plated silver welding method according to claim 5, characterized in that: After the ends of the gold-clad silver product in the first step are butted together, the whole is arranged in a ring shape, and the outer walls of the two ends are flush after butt-jointing.

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