公开(公告)号：EP0904173A1

公开(公告)日：1999-03-31

申请号：EP97922669.0

申请日：1997-04-11

申请人： WESTINGHOUSE ELECTRIC CORPORATION

发明人： BURGOON, Charles, E. ,  REIS, Donald, J.

IPC分类号： B23K9

CPC分类号： B23K9/122 ,  B23K9/1093 ,  B23K9/167 ,  B23K9/1735

摘要： The filler wire in hot wire-gas tungsten arc welding (HW-GTAW) apparatus is heated to near the melting point by application of the hot wire current over a determined length sufficient that the current required is low enough to avoid significant arc blow. This predetermined length of filler wire which approaches the molten state is supported by a ceramic sleeve which in turn may be protected by a stainless steel sheath.