Process for producing fiber composite investment castings

US5649585A · kind A · utility

Inventors

• Markus Nolte · Hille, DE
• Juergen Schaedlich-Stubenrauch · Vaals, NL
• Eric Neussl · Pulheim, DE

Key dates

• Filing date: Nov 29, 1995
• Grant date: Jul 22, 1997
• Expiry date: Nov 29, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2998/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

At least one preliminary pattern body, which is then used as part of a pattern or the pattern itself, is produced with fibers and a pattern material. A ceramic mold is formed around the pattern with a portion of the fibers having ends embedded into the mold. The pattern material is removed and finally, metal in liquid, liquid-solid or powdery form is introduced into the mold, wherein the metal is at least partially liquefied in the mold when it is introduced in powdery form. This process allows investment castings having an increased resistance to be produced with relatively simple casting equipment.