Method and apparatus for manufacturing finished parts as composite bodies from pulverulent rolling materials

US5043123A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Theodor Gormanns · Erkelenz, DE
• Siegfried Radewahn · Wittlich, DE
• Walter Solty · Hückelhoven, DE

Key dates

• Filing date: May 24, 1990
• Grant date: Aug 27, 1991
• Expiry date: May 24, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2023/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a method and apparatus for the manufacture of finished parts by the sintering of compacts which are formed as composite moldings of a pulverulent base material and at least one other pulverulent material, particularly different metal powders. The compacts are produced in the manner that at least one of the powder materials is introduced in pourable condition directly alongside of an already pre-compacted part of the compact into the mold which has a shell-shaped matrix and the powder materials are subjected together to final compacting by plug forces acting from on top and on bottom to the size desired for the sintering. In order to improve the traditional method so that moldings with vertically extending separation lines between the individual portions of the composite material can be produced without the previous disadvantages and provide an apparatus on which the compacts can be produced in accordance with this method, at least two powder materials are introduced, one after the other, in pourable condition into the individual regions of the filling volume of the mold which are to be opened, at least one pre-compacting of the powder material alrea…