Abstract
The formability of the rectangular cup by deep drawing process was investigated, to expand the functionality of the titanium drawn cup,. Forming of titanium sheet was tried by multistage deep drawing. In the experiment, the material was pure titanium sheets of the JIS grade 2. The initial thickness of the blank was 0.5mm in thickness. For the prevention, pure titanium sheets were treated by heat oxide coating. The effect of the plastic anisotropic on the occurrence of seizure in square cup deep drawing was also examined. The square cups were successfully drawn by heat oxide coating. The coating of titanium sheet has sufficient ability in preventing the seizure in multistage deep drawing operation. It was found that the square titanium cups were successfully formed by using heat oxide coating treatment.
