| 摘要 |
<p>The invention specifies the use of a crushed and graded ore, preferably magnetite ore, as a particulate mineral base material in a recyclable or non-recyclable mould or core material, respectively, for manufacturing dry or green, preferably clay-bonded, especially bentonite-bonded, in-box moulds or boxless moulds, and cores for placing in such moulds or in metallic moulds (dies), preferably when casting non-ferrous metals or alloys, especially light metals and light-metal alloys. Compared to the conventional use of quartz sand as base material, this makes it possible to achieve a substantially faster cooling and hence solidification of the metal having been cast in the moulds, as well as a more advantageous micro-structure in the castings having been produced.</p> |
