A method for removing an undesirable elements, in particular h deep 2 and o deep 2 during the electroslag remelting process operating and arrangement for carrying out the method

摘要

An electroslag remelting or refining method and arrangement for removing undesired elements, particularly H2 and O2, from metals. A water-cooled mold having a bottom plate is adapted to being raised in known manner. A growing metal ingot solidifying in the mold has a solidified portion and a liquid metal sump portion. A layer of molten slag covers the liquid metal sump. A self-consuming electrode extends into the slag. An a.c. source is connected between the electrode and bottom plate. Oppositely-poled auxiliary electrodes are included which are in electrical contact with the slag cover, the auxiliary electrodes being connected to opposite polarity terminals of a d.c. source.