A process of depositing a noble metal over a metal for by using direct current through a electrical source, generally called a rectifier. Industries use this technique for various application line Aesthetic purpose, corrosion resistance, weather resistance, electric conductivity and many more applications.
Electroplating Plants
Typical Process of Electroplating
This process is generally used for light to moderate conditions. Depositing thin layer over steel substrates by controlling bath chemistry & current density. Plated zinc will be further processed with passivation rinse to increase the life There are 4 different methods are as below.
- Acid zinc
- Cyanide zinc
- Alkaline zinc
- Mechanical zinc plating
There are three types of coatings each used for different applications as below
- Cynide Copper: Usually, an undercoat for most of plating
- ALkaline Copper: Greener chemistry cyanide free & best for higher throwing applications.
- Acid Copper: This process produces very high luster & level fling properties of coatings. Usually used for aesthetic purposes.
Nickel chrome plating is the most common plating technique that utilizes nickel and chromium electrodeposits to form a multiple-layered finish on a substrate. The motorcycle and automobile industries use this process to achieve a shiny and glossy appearance on their parts.
Hard chrome plating, on the other hand, provides a number of practical benefits for industrial settings. Chrome’s hardness rates 68-72 on the hardness Rockwell c (HRC) scale. Chrome is the hardest metal that is commercially deposited from a bath. In industrial wear applications, hard chrome can be applied in thicknesses ranging from 0.002” to 0.020.” This allows for a wide coverage range of wear needs in a variety of environments.
Usually silver & gold comes under this category: silver is used for higher conductivity purposes for electronics industries. Whereas gold is non-oxidizing metal used for both conductivity & aesthetic purposes.
Best for solderability purposes & extreme acidic conditions especially in batteries industries.
Cadmium plating offers protection against salt water corrosion, making it highly valuable in marine applications. Consumer electronics. The conductivity of cadmium electroplating makes it ideal for use in connectors and relays in electronics. It is also used to make batteries for cell phones and laptops.
Alloy plating is a plating film of the composition that contains more than two kinds of metal ingredients. When this alloy plating is processed to the base metal, it can add the characteristics of corrosion resistance, abrasion resistance and high hardness that single metal plating cannot obtains
Is a metal forming process in which parts are fabricated through electrodeposition on a model, known in the industry as a mandrel. Conductive (metallic) mandrels are treated to create a mechanical parting layer, or are chemically passivated to limit electroform adhesion to the mandrel and thereby allow its subsequent separation.
Electroless plating (ELP) is a heterogeneous oxidation-reduction reaction (known as autocatalytic deposition process, involving metal deposition at the solid-liquid interface without using electrical energy. ELP reduces metallic salt complexes on a support material surface.