Process and permanent mold for mold-casting electrically conductive material

US5156202A · kind A · utility

Assignee

• Leybold GmBH · DE

Inventors

• Georg Sick · Feldafing, DE
• Otto W. Stenzel · Zöblitz, DE

Key dates

• Filing date: Sep 4, 1991
• Grant date: Oct 20, 1992
• Expiry date: Sep 4, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D27/11
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A permanent mold for mold-casting reactive metals and metal alloys (FIG. 1) includes a multiple of radially disposed, plate-like segments 3, 3', 3", . . . which enclose the workpiece 12 and are preferably made of cooled metallic material and which form together the permanent mold including a top inlet opening 14 and a bottom opening 15 for withdrawing the working piece; in order to close the withdrawal opening 15, a closing plate 9 is provided which is composed of a multiple of ring segments 13, 13', 13", . . . and the permanent mold 5 is enclosed by a magnetic coil 6 so as to generate an electromagnetic field. A pressure element 10 can be introduced into the inlet opening 14 of the permanent mold 5 and the diameter thereof corresponds to the one of the inlet opening 14 and it can be moved in vertical direction A and a second pressure element 11 is provided which is vertically guided in the closing plate 9 where it can be moved in an upward direction such that during solidification, pressure can be applied to the workpiece which is enclosed by the permanent mold thus permitting a compression.