TRANSFER-TYPE PLASMA HEATING ANODE

Title:

TRANSFER-TYPE PLASMA HEATING ANODE

Document Type and Number:

WIPO Patent Application WO/2001/043511

Kind Code:

A1

Abstract:

An anode for transfer plasma heating in which a DC current is applied to melted metal in a vessel to produce an Ar plasma and heat the melted metal is characterized in that it comprises an anode which has an internal water-cooling structure and is made of conductive metal, a metallic protective element which is placed outside the anode with a certain gap therebetween and has an internal water-cooling structure, and a gas supply means for supplying an Ar-containing gas into the gap between the anode and the protective element, and the central part of the outer surface of the tip of the anode is recessed.

Inventors:

KAWACHI TAKESHI (JP)
YAMAMURA KAZUTO (JP)
MITAKE HIROYUKI (JP)
KINOSHITA JUNICHI (JP)
IMANAGA KATSUHIRO (JP)
DOKI MASAHIRO (JP)
KIMURA YOSHIAKI (JP)
KAWABATA TERUO (JP)

Application Number:

PCT/JP2000/008828

Publication Date:

June 14, 2001

Filing Date:

December 13, 2000

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
KAWACHI TAKESHI (JP)
YAMAMURA KAZUTO (JP)
MITAKE HIROYUKI (JP)
KINOSHITA JUNICHI (JP)
IMANAGA KATSUHIRO (JP)
DOKI MASAHIRO (JP)
KIMURA YOSHIAKI (JP)
KAWABATA TERUO (JP)

International Classes:

B22D11/11; B22D41/015; H05B7/00; H05B7/18; H05H1/28; H05H1/34; H05H1/40; (IPC1-7): H05H1/26; B22D11/10; H05B7/18

Foreign References:

JPH026073A	1990-01-10
JPH03205796A	1991-09-09
JPH04131694A	1992-05-06
JPH04139384A	1992-05-13
JPH04190597A	1992-07-08

Other References: