Gold plating from the manufacturer of technical coatings
We gold plate parts, components and jewelry
We offer electroplated gold plating for all kinds of parts, components and jewelry. We offer surface finishing with gold to improve electrical conductivity and corrosion resistance with gold for electrical engineering, precision mechanics, medical technology, the automotive industry and decorative gold plating in jewelry finishing.
Gilding services
- Electroplating of connectors, small to very small, using the barrel plating process
- Gold plating with precise gold layer thickness on high-quality connectors
- Gold plating by hand electroplating (e.g. in the watch industry) or small barrel systems for small quantities
- High-quality watch gold plating of hands, plates and bracelets for watches in the upper price segment
- High-quality gold plating on surfaces for fireplace frames and their accessories (handles, decorative parts and gold-plated screws)
- Gold plating on individual parts and gilding technology for bespoke gilding in institutes
- Coatings with gold for the restoration of vintage cars
- Gold plating of technical components in special dimensions for decorative applications
- Gold-plating jewelry with a perfect finish and uniform gold look, also for gold-plating glasses
- Gold pl atingof fine parts using precious metal coating as surface gold plating
- Decorative gold plating of metal parts in many variations and sizes
More than almost any other metal, electroplated gold has a very broad and diverse range of applications. Gold has very good electrical conductivity, is virtually corrosion-free and is therefore used in technical applications. Precisely defined coating properties are achieved with a gold coating from the manufacturer. The hardness and color of the gold can be changed by adding alloys during electroplating.
Advantages of gold plating
- Very good electrical conductivity
- Bondable gold plating possible on request
Areas of application for gold plating
- Automotive Industry
- Electronics
- Electrical engineering
- Precision Engineering
- Medical
- Telecommunications
- Watch industry
Materials for gilding
- Copper
- Brass
- Bronze
- Steel
- Stainless steel
- Aluminium
- Special materials on request
Surface refinement by galvanic gilding
- Coating thickness test with certificate
- Factory test units
- Initial sample test reports
- Comprehensive advice on site, among other things
Gold - Key data
Atomic number:
79
Symbol:
Au
Mass:
196,966569 u +/- 4 Digit(s)
CAS number:
7440-57-5
Electronegativity:
1,4
Electronic configuration:
[Xe] 4f14 5d10 6s
Density:
measured: 19,32 g/cm³
History of gilding
History of gilding
Gold plating is the process of coating objects with a layer of gold. The precious metal gold is not only one of the most corrosion-resistant metals, but is also generally perceived as visually very stylish. This makes it perfect for enhancing a wide variety of objects. In addition to gold plating using pure gold, it is also possible to use gold alloys. These can be selected according to color, depending on the elements with which the alloy was made.
The following gold colors are available on the market. Dresdner Silber und Metallveredlung GmbH only offers a limited selection of colors. Please ask us in advance - a color sample is an advantage here.
It is also possible to vary the chemical and mechanical properties of the gold coating. Its characteristics can be changed by alloying it with different elements, such as cobalt, copper, iron or nickel, in order to achieve the optimum characteristics for the respective application. Additives such as cobalt, iron and nickel increase the hardness and wear resistance. Due to its very good conductivity, gold plating is also used in the electrotechnical industry. Here, plugs, pins etc. are coated with gold. However, gold also has two disadvantages. Firstly, it is very rare and therefore far too expensive to be used in its pure form to manufacture everyday objects.
The following gold colors are available on the market. Dresdner Silber und Metallveredlung GmbH only offers a limited selection of colors. Please ask us in advance - a color sample is an advantage here.
- Rose gold
- White gold
- Red gold
- Green gold
- Yellow gold
- Blue gold
It is also possible to vary the chemical and mechanical properties of the gold coating. Its characteristics can be changed by alloying it with different elements, such as cobalt, copper, iron or nickel, in order to achieve the optimum characteristics for the respective application. Additives such as cobalt, iron and nickel increase the hardness and wear resistance. Due to its very good conductivity, gold plating is also used in the electrotechnical industry. Here, plugs, pins etc. are coated with gold. However, gold also has two disadvantages. Firstly, it is very rare and therefore far too expensive to be used in its pure form to manufacture everyday objects.
Advantages of gold plating
Gilding objects has been popular for centuries, as it not only enhances their appearance but also offers a high level of protection against corrosion. Applying a layer of fine gold increases the longevity of objects and protects them from chemical and mechanical influences.
Gold plating is mainly applied to metallic objects and those made of metal alloys. However, non-metallic materials such as ceramics, wood, glass and porcelain are also given a more valuable appearance with a gold coating or gold ornaments.
Nowadays, however, various branches of engineering also benefit from the positive properties of gold plating, for example in galvanic gold plating for medical technology or when gold plating contact surfaces.
Hard gold plating is therefore not only very popular in the high-quality gold plating of jewelry and porcelain as well as in industrial gold plating, but also in electrical engineering (for example in gold plating for brass contacts) and here in particular in semiconductor technology, where it is highly valued due to its positive properties. For example, it has high bondability and very low electrical contact resistance. This is why gold is often used in electrical components such as connectors, or when developers specifically order gold plating.
Gold plating is mainly applied to metallic objects and those made of metal alloys. However, non-metallic materials such as ceramics, wood, glass and porcelain are also given a more valuable appearance with a gold coating or gold ornaments.
Nowadays, however, various branches of engineering also benefit from the positive properties of gold plating, for example in galvanic gold plating for medical technology or when gold plating contact surfaces.
Hard gold plating is therefore not only very popular in the high-quality gold plating of jewelry and porcelain as well as in industrial gold plating, but also in electrical engineering (for example in gold plating for brass contacts) and here in particular in semiconductor technology, where it is highly valued due to its positive properties. For example, it has high bondability and very low electrical contact resistance. This is why gold is often used in electrical components such as connectors, or when developers specifically order gold plating.
The tradition and modernity of gilding
The craft of gilding has a long tradition for good reason. For centuries, this consisted of the manual application of gold leaf to various substrates, but nowadays the gilding process is carried out using electroplating technology in particular.
The usually metallic objects are immersed in a gold electrolyte and a gold coating is deposited by applying a direct electrical current. This usually takes place in an electrolytic bath containing an anode and a cathode. The substrate is placed at the cathode, the negative pole. An electric current is then passed through the bath so that dissolved gold metal ions from the cyanide gold bath are deposited on the substrate by the reduction process.
Electroplating with gold involves the reduction of gold(I) and gold(III) ions from cyanide electrolytes. (The rule of thumb is: the longer the electrolytic bath lasts, the thicker the gold layer is deposited). The layer thicknesses can be less than 1 µm up to several 100 µm and can be applied as a combination of layers. After the electrolytic bath, the substrate is post-treated, dried and thus remains spotless.
Gold electroplating has now almost completely replaced the traditional process of gold leaf plating, as it is much easier and less cost-intensive to carry out. So modernity has not stopped at this traditional craft. Regardless of whether you want to have a necklace gold-plated, precision mechanics gold-plated or specific metal gold-plated.
The usually metallic objects are immersed in a gold electrolyte and a gold coating is deposited by applying a direct electrical current. This usually takes place in an electrolytic bath containing an anode and a cathode. The substrate is placed at the cathode, the negative pole. An electric current is then passed through the bath so that dissolved gold metal ions from the cyanide gold bath are deposited on the substrate by the reduction process.
Electroplating with gold involves the reduction of gold(I) and gold(III) ions from cyanide electrolytes. (The rule of thumb is: the longer the electrolytic bath lasts, the thicker the gold layer is deposited). The layer thicknesses can be less than 1 µm up to several 100 µm and can be applied as a combination of layers. After the electrolytic bath, the substrate is post-treated, dried and thus remains spotless.
Gold electroplating has now almost completely replaced the traditional process of gold leaf plating, as it is much easier and less cost-intensive to carry out. So modernity has not stopped at this traditional craft. Regardless of whether you want to have a necklace gold-plated, precision mechanics gold-plated or specific metal gold-plated.
Questions and answers about gilding
Anyone who wants to gold plate components, contact surfaces or jewelry will encounter many technical questions. Whether galvanic gold plating, electrolytic gold plating or technical gold plating, the processes differ significantly depending on the material and application. Precise layer thicknesses are particularly important when gold-plating printed circuit boards, gold-plating electronic components or high-quality contact finishing. If you are planning gold plating for the electronics industry or gold plating for sensor technology, you will also find frequently asked questions about gold plating by electroplating below.