| 摘要 |
<p>FR 1417146 is improved by making the extrusion ram associated with the sliding sealing block closing the end of the extrusion press container, in two parts having relative axial movement. These two parts define between them inside the annular extrusion lubricant feed reservoir at least one variable volume which produces compression of the lubricant as the parts close together, and its expulsion in advance of the extrusion operation.</p> |
