| 摘要 |
<p>A substantially cylindrical blank having a solid section is used for manufacturing a ball stud, as is used for steering linkages in motor vehicles. A ball (6') is integrally formed on this blank by means of a preferably multi-stage extrusion process, in a press (1') with a pressure plunger (4'). In the final stage of the extrusion process a closed press (1') is used and the ball (6') obtained in this manner is brought to its rated size by means of round forging (Fig. 4). <IMAGE></p> |
