| 摘要 |
<p>An assembly of slide gate valve plates are described for use in the casting of molten metal. The assembly includes a fixed plate and sliding plate (1) having a plurality of bores (3a,3b). The extremes of stroke available to the sliding plate produce at least two cutting edges and an emergency shut-off position that is independent of transducers, sensors, or operator judgment. The plate may include oval-shaped bores (3a,3b) for increased shut-off margin (7) or offset bores for improved flow of the molten metal through the pouring channel defined by the alignment of the fixed bore with a sliding bore.</p> |
