method for remelting of steel ball, using a cooled crucible steel gazeuxdans.

摘要

1365618 Casting processes FRIED KRUPP GmbH 3 Oct 1972 [4 Oct 1971] 45578/72 Heading B3F Metal sponge 3 is supplied to the surface of a layer of slag 7 contained within a mould 1 and is melted by a gas plasma. The sponge 3 floats on the surface of the slag until it melts when it falls as drops through the slag and eventually solidifies to form an ingot 2. The plasma burner 6 is operated with an inert gas such as argon or nitrogen to which small quantities of other gases may be added, e.g. H 2 , CO, CH 4 or CO 2 . The ingot may be continuously withdrawn from the bottom of the mould.