Verfahren zur Herstellung einer Bürste

Details

Veröffentlichungs-Nr.

EP4813549

Anmeldetag

28. März 2025

Veröffentlichung

30. September 2026

Rechtsraum

EP

Abstract

A method is disclosed for producing a brush (12) configured to transmit electric current between a stationary part (10) and a moving counterpart (20) in an electrical machine (1). The method comprises dry mixing of powders to obtain a dry powder mixture comprising 0.5-5 wt.% of graphene and/or reduced graphene oxide, 0-3 wt.% of a non-metallic filler, balance copper or copper alloy powder; consolidating the dry powder mixture to form a composite material by subjecting the dry powder mixture to hot isostatic pressing or spark plasma sintering; cold working of the composite material; and forming the brush from the cold worked composite material.

Anmelder

Firma

ABB SCHWEIZ AG

Land

🇨🇭 Schweiz