Stolberger Metallwerke Gmbh & Co Kg

Robert Leffers

Udo Adler

Thomas Helmenkamp

J&uuml;rgen Gebhardt

Klaus Schleicher

Albert Rumbach

Heinz Klenen

Klaus Elbern

Material for a metal strip

An electrically conductive metal tape for manufacturing electrical contact components, in particular plug connectors, having a base material made of a copper alloy having nickel proportions between 1.0 and 4.0% by weight, silicon proportions of 0.08 to 1.0% by weight, tin proportions between 0.02 and 1.0% by weight, zinc proportions of 0.01 to 2.0% by weight, zirconium proportions of 0.005 to 0.2% by weight and silver proportions between 0.02 to 0.5% by weight, the coating consisting of a tin-silver alloy having a silver proportion between 1.0 and 3.8% by weight. Particularly positive properties are displayed by a metal tape whose base material is made of a copper alloy having proportions of nickel between 1.4 and 1.7% by weight, silicon from 0.2 to 0.35% by weight, tin between 0.02 and 0.3% by weight, as well as zinc from 0.01 to 0.3% by weight.

Electrically conductive metal tape and plug connector made of it

A method and a system for regenerating a metal bath contaminated by mixed crystals, particularly a tin bath ( ) in a hot-dip coating process. A partial stream of the tin bath ( ) is removed from the coating tank ( ) and is first of all heated above its liquidus temperature in a heating unit ( ). Subsequently, the tin bath is conducted over a cooling unit ( ) and, while flowing through a filter ( ), is cleaned of mixed crystals coming down as a result of the cooling. The filter is a ceramic foam filter made of silicon carbide. Subsequently, the regenerated tin bath ( ) is heated in a melting tank to process temperature, and returned from there to the coating tank ( ).

Method and arrangement for regenerating a contaminated metal bath

Growing community of inventors

Mönchengladbach, Germany

Robert Leffers