Patent ID: 8980166
Filing Date: 2015-03-17
Classification: B22F,C22C,H01R

Abstract:
1. A method for producing a strip-shaped semifinished product for electrical contacts, wherein the semifinished product has an upper face comprising a silver-based composite material intended for the electrical contact-making, one or more metal oxides or carbon being embedded in the composite material, and an easy-to-solder or easy-to-weld carrier layer comprising silver or a silver-base alloy, which carries the composite material, comprising the following steps: producing a block from the silver-based composite material using a powder-metallurgical process; covering the block comprising the composite material with a powder that primarily contains silver; isostatically pressing the block covered with the metal powder so as to compact the metal powder; sintering the pressed block; working the sintered block by extrusion molding; and generating a partial strand having an upper face comprising composite material and a lower face comprising silver or a silver-base alloy.