Process and apparatus for manufacturing diaphragms

US4961901A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Heinz Wullenweber · Frankfurt am Main, DE
• Peter Kohl · Neuberg, DE
• Herbert Jung · Karlstein, DE
• Jorgen Borchardt · Troistorrents, CH
• Wolfgang Bickle · Reilingen, DE
• Jurgen Braus · Walldorf, DE
• Hans-Joachim Hiedemann · Cologne, DE

Key dates

• Filing date: Apr 18, 1989
• Grant date: Oct 9, 1990
• Expiry date: Apr 18, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F3/18
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a process of manufacturing diaphragms, a layer of a difficulty flowable metal powder is applied to a support, a wire net is rolled onto the powder layer and the latter is compacted at the same time and the metal powder is fired at 800.degree. to 1500.degree. C. in an oxidizing atmosphere. In order to impart to the diaphragms a constant thickness, strength and density, the metal powder is uniformly distributed and applied as regards its bulk volume to the support and the powder layer is moved under a distributing roller rotating opposite to the direction in which the powder is fed.