What are the types of silver plating? What are the types of electroplating?

Sterling silver does not fade, and the color changes only because it is not well maintained, and the oxidation reaction occurs.

However, electroplating silver is possible, and the plating layer of electroplating is generally thin, and it will fade after a long period of wear.

Maintenance method: electroplated silver: put the silver jewelry that is easy to change color and the silver jewelry that is not easy to change color together, and the color of the silver jewelry surface is different.

Silver jewelry without silver plating is yellowish in color. The plating will generally choose platinum or rhodium plating. The colors are brighter.

The role of the plating is to isolate the silver from contact with the sulfur in the air, thus preventing the silver from discoloring. Many silver jewelry like Tiffany & Co. are electroplated to make them look so delicate, smooth and not easy to change color.

Treat silver jewelry with nail polish: What if you don't have a plating and are afraid that the silver will change color quickly? There is an easy and easy way to solve it.

Apply a layer of clear nail polish to the surface of the newly bought or cleaned silver jewelry. Apply every few days. This way it will not change color.

Pay attention to the maintenance of silver jewelry: hairspray, cosmetics, etc. are best not to touch silver jewelry. Don't wear silver jewelry to hot springs or the beach.

Electroplating is divided into hanging plating, barrel plating, continuous plating and brush plating, which is mainly related to the size and batch of parts to be plated.

Hanging plating is suitable for products of general size, such as the bumper of a car, the handlebar of a bicycle, etc.

Barrel plating is suitable for small parts, fasteners, washers, pins, etc.

Continuous plating is suitable for wire and strip produced in batches.

Brush plating is suitable for spot plating or restoration.

The electroplating solution has acidic, alkaline, acidic and neutral solutions with chromium mixture, and the plating tank and hanging device in contact with the products to be plated and the plating solution should have a certain degree of versatility regardless of the plating method.

1. Electroplating is divided into one kind from the principle: electroplating.

2. From the type of coating: there are more than a dozen kinds of single metal coatings, such as zinc, cadmium, copper, nickel, chromium, tin, silver, gold, iron, cobalt, etc., and the alloy plating layers are copper-tin, zinc-copper, zinc-iron, nickel-cobalt, nickel-iron, zinc-tin-iron, tin-zinc-antimony, tin-zinc-cobalt, etc

Prevent corrosion: such as plating of steel workpieces, such as zinc and cadmium plating.

Decorative plating: such as the protective - decorative coating of steel workpieces, generally using copper-nickel-chromium or low-tin bronze.

Multi-layer electroplating of chromium and other plum sheds. This is widely used in various mechanical products, instrumentation, medical equipment and daily necessities.

Improves surface hardness and wear resistance: e.g. hard chrome plating of molds.

Improve the electrical conductivity of workpieces: e.g. copper and copper alloys.

of silver-plated or tumbling gold-plated.

Improve magnetic permeability: such as electroplating nickel-iron alloy, nickel-cobalt alloy, nickel-cobalt-alloy, etc.

Improves the reflection of light.

Properties: such as silver plating, decorative chrome plating.

It is used in hot processing: such as copper plating to prevent local carburizing, tin plating to prevent local nitriding, etc.

Dimensions of the repaired workpiece: e.g. iron plating, chrome plating.

Other uses: e.g. lead plating can improve resistance to sulfuric acid or chromic acid.

properties, brass-plated.

It can increase the adhesion of steel parts and rubber when it is hot-pressed, and tinning of copper and its alloys can improve its welding performance.

There are 18 types of common plating in Hubei Huazhong Electroplating Industrial Park, most of which are used for auto parts, new energy, hardware metals and other industries, according to the type of plating: galvanized nickel plating chrome plating copper plating gold plating silver plating and other alloy metals.

Electroplating is divided into two according to the process: hanging plating, barrel plating, continuous plating and brush plating.

There are three main categories of electroplating purposes: the functionality of electronic products, the protection of outdoor products, and the decoration of handicrafts.

Silver plating is a white metalDensity (20), melting point , relative atomic mass, standard electrode potential ag ag is +. Silver is malleable, malleable, and has excellent electrical and thermal conductivity. The polished silver layer is highly reflective and decorative.

Silver plating was first applied to decoration. In the electronics industry, communication equipment and instrumentation manufacturing industry, silver plating is widely used to reduce the contact resistance on the surface of metal parts and improve the welding ability of metal.

Silver-plated method:Graphite electroless silver plating: Electroless silver plating solution is composed of silver salts and reducing agents, etc., and the following reactions usually occur in the process of electroless plating of graphite

r-cho+2ag(nh3)2+ 2ohˉ→r-coonh4+2ag↓+3nh3+h2。Graphite powder is used as a conductive material after silver plating (or nickel plating), which not only has low density, but also excellent conductivity and low production cost.

The above content reference: Encyclopedia - electroplating silver.

Sterling silver gilded means that the inside is pure silver, and the exterior is plated with a layer of gold, but it does not last and will wear off after a few months.

Silver gold plating refers to the gold coating on the metal base or silver-plated material, which is applied to the metal surface with transparent red and orange-red paint in the manufacturing process, and also refers to the paint with silver gold plating, which was the main gold plating method in the 19th century, and is now rarely used. Fire gilding of the 17th-18th centuries. A lighter vermilion color than cinnabar.

Sometimes it is gracefully described as a color like cinnabar.

Advantages of electroplating gold:

1. The gold-plated products and ornaments are firm and not easy to fall off. The gold-plated layer has the effect of anti-corrosion, wear-resistant, and high-temperature, and the golden yellow luster is very beautiful.

2. The white luster of electroplated gold jewelry is natural and pure, giving gold jewelry a unique appearance. Even when worn every day, gold always leaves a pure white sheen.

3. The nature of electroplated gold jewelry is very stable, and it will not deteriorate or fade due to daily wear, and its luster is always the same. It will not be affected by contact with common acids such as sulfur, bleach, chlorine from swimming pools, and sweat, so you can wear gold jewelry at any time.

What is the difference between sterling silver and silver plating?

Sterling silver refers to silver with a content of close to 100%, and the sterling silver jewelry we see is also the most common silver jewelry on the market with the logo of "S925" or "AG925". AG may be known to all friends, it is the element symbol of silver. S is the initials of the English word for silver, Sliver.

Both of these signs say that the silver jewelry is silver of purity.

To put it simply, silver plating is an effect of electroplating, that is, silver is plated on the surface of metal or other non-silver substances.

Difference Between Sterling Silver and Silver Plating

Sterling silver is silver with a silver content of nearly 100%, while silver plating is simply a layer of silver plated on the surface, and the interior of the object may be other non-silver metal substances.

Sterling silver jewelry features:

The general *** jewelry will have a formal logo, so the identification of silver jewelry becomes very simple: as long as you look at the inconspicuous place of the silver jewelry whether there is a steel seal (such as the inside of the shank, the necklace connection, the bottom of the pendant, etc.).

Silver jewelry has the following stamps:

1 Sterling silver: There is a sign of S925 or AG925 (the former is a little more), indicating that the silver content of this metal is. This is the most common mark, the most common jewelry silver on the market, and it is also a commonly used sign for general silver jewelry.

2 Pure silver: There is a symbol of S990 or AU990 (the latter is a little more), indicating that the metal has a silver content of 99%. This kind of sign is mostly used in: silver ingots, silver ingots, silver ornaments and other large silver ornaments.

3 Silver-plated, silver-plated: There is a steel stamp of SL or FS, which means that this jewelry is silver-plated.

4 If there is no stamp, it is most likely ordinary metal.