| 摘要 |
<p>A ram casting machine for the fabrication of concrete slabs which is movable on a casting bed. The machine incorporates a feed hopper and a concrete flow channel with ram numbers cyclically reciprocated therein in opposite directions for generating internal pressure in the cast concrete. Each ram member including at least one wedge-shaped surface assembly having first and second inclined annular surfaces, with the entrance to the concrete flow channel and having a steeper inclination than the second inclined annular surface.</p> |
