EP 0453188 A2 19911023 - Plasma tundish heating.
Title (en)
Plasma tundish heating.
Title (de)
Plasmabeheizung einer Tundisher.
Title (fr)
Réchauffage du plasma utilisé dans un tundish.
Publication
Application
Priority
GB 9008833 A 19900419
Abstract (en)
A method of heating molten material in a tundish employs a plasma torch. The plasma comprises a mixture of argon and one or more of nitrogen, hydrogen, neon and helium. A mixture of argon and helium including from 10 to 20% by volume of helium is useful for heating steel. For an arc of given length, a higher voltage is obtainable than when pure argon is used as the plasma gas. The torch is preferably engaged by a horizontal support arm which is pivotally mounted on an extensible support so as to facilitate location of the torch in a limited space above the tundish. <IMAGE>
IPC 1-7
IPC 8 full level
B22D 11/10 (2006.01); B22D 11/11 (2006.01); B22D 41/015 (2006.01); H05H 1/32 (2006.01)
CPC (source: EP KR)
B22D 11/10 (2013.01 - KR); B22D 11/11 (2013.01 - EP)
Designated contracting state (EPC)
BE DE ES FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0453188 A2 19911023; EP 0453188 A3 19930428; AU 7500291 A 19911024; CN 1057416 A 19920101; GB 9008833 D0 19900613; JP H05305422 A 19931119; KR 910019483 A 19911130; ZA 912855 B 19920429
DOCDB simple family (application)
EP 91303238 A 19910411; AU 7500291 A 19910415; CN 91103226 A 19910419; GB 9008833 A 19900419; JP 8839691 A 19910419; KR 910006187 A 19910418; ZA 912855 A 19910419