Electroplating is a process that covers the metal surface with a permanent, non-organic protective layer by electrolytic means to help improve metal hardness, wear and abrasion resistance and corrosion protection properties in addition to electrical and thermal conductivity while bestowing a shining look to the piece.
The process is done by sending a negative charge to the parts to be plated immersed in an electrolyte bath containing dissolved metals salt.
The salt metallic ions carry a positive charge that attracts to the part with the negative charge that in turn allows the electrons to “change” the negative charge ions at interface into a metal shape thus forming a plate layer.
Electroplating of small parts is done in barrels, whereas rack plating is used for bigger parts.
Plating with zinc is used to protect metal surfaces and improve its look as well as forming a barrier against rust corrosion of ferrous metals. The zinc plate is then treated with conversion coating and post-plating sealers to provide additional protection against corrosion especially in high humidity and dampness conditions. Plating of zinc parts is conducted in large tanks 7000x1500 mm,treated with olive, blue, yellow or black passivation. Bolts, screws, nuts and small parts are plated in automatic barrel lines.
a multi-use layer that provides a strong, durable and ductile plate with high resistance against corrosion. Nickel is often combined with a pre-plate copper layer to obtain higher corrosion resistance as well as extra brightness of final sleek chrome finish that functions as anti-tarnish of the nickel shining plate.
it is used on a large scale to protect ferrous and nonferrous surfaces, especially in the manufacturing of food and beverage cans used due to food approval, ductile and wear-resisting properties. It is also used in electronic industry due to high protection of base metal against oxidization and maintaining low resistance electrical conductivity.
two methods of copper plating are applied:Alkaline Cyanide Copper plating and Bright Acid Copper plating. Copper plating is often the first layer applied prior to other plating finishes, but it can also be applied as final plating finish for its bright look. Alkaline cyanide copper is applied as pretreatment before plating of zinc die cast, silver, tin, nickel, nickel/chrome, or zinc plating. Sometimes, an underlying cyanide copper layer may be applied at the request of customer for certain base metals before zinc electroplating to increase adhesion of zinc plating with iron and boost resistance against corrosion of overall coating. Bright acid copper plating is used for additional corrosion resistance and surface finish improvement due to high brilliance and leveling.
silver or gold coating is designed to give pieces and items a glamorous and eye-catching finish that reflects the beauty of these precious metals in addition to their practical properties such as resistance to corrosion and oxidization. Amongst the items highly in demand for plating are tableware, decorative pieces and chandeliers. Also, silver / gold plating is used in other important industry applications such as Printed Circuit Board (PCB) due to high electrical conductivity and low resistance.