| 摘要 |
<p>A hot top lining slab (2) for an ingot mould (1) used in the casting of e.g. steel ingots has a plurality of ribs (4, 5, 6, 7, 8) on its back face and is thick and of low density matter. The ribs (4, 5, 6, 7, 8) define a plurality of enclosed recesses (9) spaced inwardly from the periphery of the slab. The slabs (2) enable the amount of head metal to be reduced but sound ingots still obtained.</p> |
