| 摘要 |
<p>Mould has refractory layer comprising large size degreasing granules, 250-6000 mu and fine grain filler, 2-600 mu. Large granules constitute 23-80% and filler is 20-77% of layer and they are agglomerated by a binder made by gelling a silicate. Used to make one-piece moulds.</p> |
