Silver electroplating is widely applied in the electrical/electronic industry. Because of its outstanding electrical properties it is used as a coating for contacts and busbars in switchgear systems, a market in which Galvano Hengelo is specialized.
We know 2 different types of silver electroplating: regular and hard silver. In contacts usually one side is regular silver plated and the opposite side is hard silver plated to prevent wear. A difference of at least 25% in hardness reduces wear and gives longer lifetime. The hardness of electrodeposited silver is increased by alloying a small amount of antimony.
|Properties of electrodeposited silver|
|Content Ag||> 99||%|
|Content Sb (only in hard silver)||< 0.5||%|
|Hardness regular silver||90 - 110||HV|
|Hardness hard silver||> 125||HV|
|Maximum product dimensions:|
|Copper:||LxWxH = 2100 x 400 x 1100 mm., also barrel plating|
|Aluminium:||LxWxH = 1300 x 300 x 900 mm.|
Base materials for silver electroplating: copper (alloys) and aluminium.
On aluminium we apply an undercoat of 3 – 5 micron electroless nickel.