Title:
ARC FURNACE PRESSURE RING ASSEMBLY
Document Type and Number:
WIPO Patent Application WO2005071335
Kind Code:
A3
Abstract:
The invention provides for a pressure ring assembly [10] suitable for use in an electric arc furnace, wherein the pressure ring assembly [10] comprises at least two pressure ring segments [22] engaging each other, at least one contact shoe [50] arranged between the pressure ring [20] and an electrode, and a piston arrangement [40] between the pressure ring segment [22] and the contact shoe [50] for forcing the contact shoe [50] into electrical contact with the electrode. The pressure ring assembly [10] is characterised therein that it is made of a metal alloy wherein a first metal of the alloy is copper, and a second metal is selected from a group comprising of chrome and silver. The pressure ring assembly [10] is further characterised therein that each pressure ring segment [22] includes two tapered engagement formations [27] defined within the pressure ring segment [22] and being adapted to be engaged by complimentarily tapered connecting means [60] such that the pressure ring segments [22] are drawn towards each other during installation of the pressure ring assembly. The pressure ring assembly [10] further provides for a sealing arrangement between the pressure ring and the contact shoe [50].
Inventors:
VENTER JACQUES (ZA)
Application Number:
PCT/IB2005/050225
Publication Date:
February 23, 2006
Filing Date:
January 19, 2005
Export Citation:
Assignee:
VENTER JACQUES (ZA)
International Classes:
F27B3/08; F27B3/10; F27D11/10; H05B7/10; (IPC1-7): H05B7/10
Foreign References:
| US3717445A | 1973-02-20 | |||
| FR2159779A5 | 1973-06-22 |
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