Method for bending spatial semi-finished product of plastic ductile material, involves bending semi-finished product within radially extending area by repetitive stretching under plastic flowability in space

摘要

The method involves bending semi-finished product (2) within a radially extending area by repetitive stretching under plastic flowability in the space. The product increasingly stretched and bent in sectored areas (11) within increasing radius area. The stretching is carried out by material deflecting pressure on sectored areas. An independent claim is also included for a device for bending spatial semi-finished product of plastic ductile material.