| 摘要 |
<p>The present invention relates to equipment to be used in connection with an extrusion apparatus as well as corresponding methods for the extrusion of material; in a particular aspect it relates to a process chamber provided in front of a die thereby serving to control parameters of the extrusion process. In a preferred embodiment a die holder is provided which serves both as a means for mounting a die on the front end of a hollow stem as well as provides a process chamber in front of the die during extrusion. In a further preferred embodiment the process chamber is provided with a resistance means for controlling the flow through the chamber inlet opening, such a control means being adapted to serve both as a temperature regulating means for achieving an optimum temperature of the metal inside the process chamber, as well as controlling the position of the metal inside the process chamber during loading of a new billet.</p> |
