公开(公告)号：EP1154678A1

公开(公告)日：2001-11-14

申请号：EP00981694.3

申请日：2000-12-13

申请人： NIPPON STEEL CORPORATION

发明人： KAWACHI, Takeshi ,  YAMAMURA, Kazuto ,  MITAKE, Hiroyuki ,  KINOSHITA, Junichi ,  IMANAGA, Katsuhiro ,  DOKI, Masahiro ,  KIMURA, Yoshiaki ,  KAWABATA, Teruo

IPC分类号： H05H1/26 ,  B22D11/10 ,  H05B7/18

CPC分类号： B22D11/11 ,  B22D41/015 ,  H05B7/00 ,  H05B7/185 ,  H05H1/28 ,  H05H1/34 ,  H05H1/40 ,  H05H2001/3421 ,  H05H2001/3478

摘要： (57) 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 madc 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.