| 摘要 |
<p>A process for preheating a nozzle, in particular a nozzle for feeding metal between two bands, belt-like tracks or the like of a mound of a casting machine with moving mound wall is such that, before the actual metal to be cast, at least one substance at a different temperature than that of the said metal is passed through the nozzle. Thus before casting a ferrous metal, for example steel, first a non-ferrous metal for example aluminum and subsequently a ferrous metal with a lower melting point than that of the metal to be cast is passed through the nozzle.</p> |
