| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning method for a soft material by which spinning can be performed even to a shape of which the difference in wall thickness is large, which does not cause separation even if working ratio is increased, and which can reduce the manufacturing costs by improving a yield. SOLUTION: The spinning method for the soft material has the first process, in which the first pass is conducted by spinning with a core metal 3 rotating in one direction and a roller 1 rotating in the direction opposite to the core metal 3, and the second process in which the second pass is conducted by spinning with the core metal 3 and the roller 1 which rotate in the directions opposite to the rotation in the first pass. COPYRIGHT: (C)2005,JPO&NCIPI
|
