Melting furnace with weight-related control of the consumable electrode

US4775981A · kind A · utility

Assignee

• Leybold-Heraeus GmbH · DE

Inventors

• Heinz Kohnert · Rodenbach, DE
• Rudolf Randa · Hanau, DE
• Otto W. Stenzel · Zöblitz, DE

Key dates

• Filing date: Nov 2, 1987
• Grant date: Oct 4, 1988
• Expiry date: Nov 2, 2007

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B7/102
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a melting furnace with weight-related control of the consumable electrode, the electrode mounting is disposed in a separate pressure chamber which has an inverted bottle-shaped configuration. The downwardly extending neck-like portion is passed sealingly through an opening in the cover plate of the melting chamber. The pressure chamber is suspended from a crossbeam which can be driven vertically by means of spindles. On the upper end of the pressure chamber there is provided a bellows whose upper edge is joined to the upper, tubular portion of the electrode holding rod, while a solid rod holding a current-carrying tube extends coaxially through the tubular portion and is hung from a frame which suspends the electrode holding rod and which is supported on the crossbeam by a sensor. Between the crossbeam and the hanger frame there is provided an auxiliary cylinder which is joined by a pressure hose 33 to the pressure cylinder, by which the pressure forces acting on the tubular portion and the electrode holding rod are compensated.