Composite material for sliding surface bearings

US4394275A · kind A · utility

Assignee

• Karl Schmidt GmbH

Inventors

• Wolfgang Bickle · Reilingen, DE
• Rolf Funke · Bad Schönborn, DE
• Rolf Pfoh · Wiesloch, DE

Key dates

• Filing date: Jul 15, 1981
• Grant date: Jul 19, 1983
• Expiry date: Jul 15, 2001

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2311/30
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A composite material for sliding surface bearings comprises a gacking shell of steel, which is covered by a bearing metal layer of sintered porour bronze having a porosity of 25 to 45%. The voids of the bronze layer are filled with a fluorocarbon-lead mixture. The bearing metal layer is covered by an anti-friction layer consisting of the fluorocarbon-lead mixture in a thickness of, for example, 30 to 500 microns. To permit of a machining of the anti-friction layer the bronze layer has a thickness of 250 to 350 microns and a porosity of 25 to 45% and the fluorocarbon-lead mixture comprises 30 to 60% by weight polyvinylidene fluorinde and 20 to 50% by weight lead.