Method for producing a composite structure with a foamed metal core

US6675864B2 · kind B2 · utility

Assignee

• FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG · DE

Inventors

• Robert Singer · Erlangen, DE
• Frank Heinrich · Harsefeld, DE
• Carolin Korner · Feucht, DE
• Gerhard Grotzschel · Sternenfels, DE

Key dates

• Filing date: Nov 26, 2002
• Grant date: Jan 13, 2004
• Expiry date: Nov 26, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D17/24
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing a composite structure in which a foamed metal core (1) is surrounded with a metal body (3). The method includes the following steps: a) producing a foamed metal core (1) with an essentially closed surface; b) introducing the foamed metal core (1) into a pressure die-casting mold; c) filling the pressure die-casting mold at a first casting pressure (p1); d) reducing the first casting pressure (p1) before the pressure die-casting mold has been filled; e) filling the pressure die-casting mold entirely, the first casting pressure (p1) being reduced to zero or almost zero; and f) applying a second casting pressure (p2) and maintaining the second casting pressure for a predetermined holding period.