Sätt att stränggjuta metall

摘要

In continuous casting, the mould (11) has a heat insulating cover (12) and molten steel and liquid synthetic slag are supplied to the mould through tubes (14 and 13 resp.) that extend through the cover. The positions of the surface (21) of the steel and the surface (20) of the slag are continuously measured by means of a radar (15) or any other radiation based measuring device and the supply of steel and slag is controlled so that the surfaces are constantly on the same predetermined levels in the mould and so that the slag surface is at a distance from the cover. The space between the slag surface and the cover is flushed with a protective gas, for example argon.