Induction melting furnace

US5121406A · kind A · utility

Assignee

• Leybold GmBH · DE

Inventors

• Franz Hugo · Aschaffenburg, DE
• Erwin Wanetzky · Großkrotzenburg, DE

Key dates

• Filing date: Jul 30, 1990
• Grant date: Jun 9, 1992
• Expiry date: Jul 30, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27B14/061
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an induction melting furnace 1 for metals which are difficult to melt including an induction coil 2 surrounding the crucible 3 and a mold receptacle 4 surrounded by an annular chamber 5 to hold the cooling agent. The crucible 3 is disposed in a housing 7 provided with a vacuum connection 6. In order to improve the microporous nature, the melt contained in the mold receptacle 4 is compressed by means of a pressure which is build up in the mold receptacle 4 prior to the cooling.