| 摘要 |
The invention relates to a wearing body or bushing having an axial twin borehole (ZB) for receiving a twin screw for extruding meltable material, in particular plastic. In order to avoid cracking and to save material, the wearing body according to the invention has a radial cross section with an outer contour (AK), which is convexly curved over the entire circumference and is in the form of an oval, and with two axes of symmetry (SA1, SA2), which run perpendicularly to one another and the point of intersection (E) of which lies on the extrusion axis (EA), wherein the width (a) of the oval on the first axis of symmetry (SA1) is greater than the height (b) of the oval on the second axis of symmetry (SA2). The invention also relates to a housing body complementary to the wearing body and also to an extrusion cylinder for a twin-screw extruder having such a wearing body and/or housing body and also to a twin-screw extruder having such an extrusion cylinder. |
