| 摘要 |
<p>Indirect extrusion process for a metal billet. In indirect extrusion by a free die process, a surface skin of the billet is removed simultaneously with the extrusion process by using a two stage die (8), so that the container cleaning cycle after extrusion becomes unnecessary. A shear support (3) is provided fixed separately from said container (2) on the extrusion ram (4) side, and after the extrusion cycle is complete, a shear (shearing device) (14) or said shear support (3) shears off and removes a discard unitarily and tightly stuck in said die (8). This method can shorten the extrusion cycle, and damage to essential parts of the extrusion machines can be avoided. </p> |
