Process and device for producing press fittings from steel, in particular special steel

US6843096B2 · kind B2 · utility

Assignee

• Witzig & Frank GmbH · DE

Inventors

• Walter Viegener · Attendorn, DE
• Jürgen Nägeler · Korschenbroich, DE
• Walter Bauer · Munich, DE

Key dates

• Filing date: May 16, 2001
• Grant date: Jan 18, 2005
• Expiry date: May 26, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21D17/04
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Special steel press fittings are produced in two process steps, which can be performed simultaneously, or also one after the other. The cut to size blank is widened in a die is upset in order to form the desired pipe connection areas.