| 摘要 |
<p>A die for extruding a honeycomb structural body for a catalyst support, which catalyst removes harmful gases in exhaust gas, composing of an integral metal block provided with (a) one surface provided with a plurality of circular perforated holes A having a given depth and a given pattern and a grid-formed slits conforming to a crosssectional shape of a honeycomb structural body to be extruded and (b) another surface provided with a plurality of perforated holes B having a given depth and a given pattern, said slits connecting to the holes B, having a smaller width than a diameter of the holes A and passing through center of the holes A. Said die is manufactured by providing the slits after perforating the holes A.</p> |
