| 摘要 |
Mold tube made from copper has a rectangular inner and outer cross-section with rounded longitudinal edge regions (2) and a nominal wall thickness which is 8-10 % of the distance of the inner surfaces (5) lying opposite each other on the tube mouth. The wall thickness in the longitudinal edge regions opposite the wall thickness of the wall regions between the longitudinal edge regions is 10-40 % smaller. An Independent claim is also included for an alternative mold tube. |
