Mass Plating

Definition - What does Mass Plating mean?

Mass plating is an electroplating process that is used to plate a large number of components very quickly. To perform mass plating, a barrel is loaded with parts and then placed into a container filled with the coating material. The barrel is then rotated to ensure that all of the components in the barrel are properly coated for corrosion protection.

Mass plating may also be known as barrel plating.

Corrosionpedia explains Mass Plating

Since it requires the use of a barrel, mass plating is often referred to as barrel plating. The barrel is used to carry the parts and hold them while they are submerged in the coating solution. Because mass plating is an electroplating process, the barrel cannot be made out of an electrically conductive material or else it could negatively affect the coating quality of the components inside. Barrels used for mass plating are commonly made from some sort of polymer. Within the barrel, there are rods and other electricity carrying devices used to transmit an electrical charge to the components inside.

Mass plating is a very advantageous process for applications that require high volumes of small components that need to be electroplated. While it can give a good quality finish, the mass plating process brings parts in contact with one another, which can have an adverse effect on the coatings. Another electroplating process may be more suitable for components requiring a high degree of aesthetic appeal.

Common examples of parts or components that undergo the mass plating process include:

  • Nuts
  • Bolts
  • Screws
  • Pins
  • Washers
  • Electrical Connectors
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