Formability of Pure Titanium Long-Cup by Multi-Stage Deep Drawing

Yasunori Harada; Toshiyuki Araki; Takahiro Tsuda

doi:10.4028/www.scientific.net/MSF.654-656.1307

Paper Titles

Precipitates Behavior during Thermomechanical Processing of Low Mn, Ti Added Pipeline Steels
p.1291

Numerical Simulation for Effects of Friction on Deformation Behaviors in a 3-Dimensional Hot Upsetting Process
p.1295

The Effect of Oxygen on the Brittle-to-Ductile Transition in Silicon Single Crystals
p.1299

Effect of Si Content on Fracture Behaviour Change by Strain Rate in Si Steels
p.1303

Formability of Pure Titanium Long-Cup by Multi-Stage Deep Drawing
p.1307

Influence of Roll Speed Schedule on Transverse Wall Thickness Evenness of Shell Elongated by Mandrel Mill
p.1311

Effect of Prior Cold-Working on Strength and Electrical Conductivity of Cu-Ti Dilute Alloy Aged in a Hydrogen Atmosphere
p.1315

Simultaneous Enhancement of Electrical Conductivities and Mechanical Properties in Cu-Ti Alloy by Hydrogenation Process
p.1319

Development of High Strength and High Conductivity Cu-Ag-Zr Alloy
p.1323

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Formability of Pure Titanium Long-Cup by Multi-Stage Deep Drawing

Abstract:

The pure titanium long-cups were formed by preventing the seizing in cold multi-stage deep drawing processes. For the prevention, pure titanium sheets were treated by heating oxide coating. The coating is very effective in preventing the occurrence of seizure and galling. The fresh and clean titanium is not in direct contact with the die during the forming due to the existence of the oxide layer. In multi-stage deep drawing, pure titanium sheets of the JIS grade 2 was employed. Various cups were drawn by exchanging the punch and ringed die. The die was flat in the first stage, and was taped without a blankholder in the subsequent stages. The effects of the coating conditions on the occurrence of seizure in multi-stage deep drawing were examined. It was found that the coating titanium sheet has sufficient ability in preventing the seizure in multi-stage deep drawing processes. The pure titanium long-cups were successfully formed by a multi-stage deep drawing operation in cold.