| Project/Area Number |
13555198
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Material processing/treatments
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
MORI Ken-ichiro Toyohashi University of Technology, Faculty of Engineering, Professor, 工学部, 教授 (80127167)
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| Co-Investigator(Kenkyū-buntansha) |
MAKI Seijiro Toyohashi University of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (20124315)
MURAO Takuji Noguchiseisakusho Co., Manufacturing Technique Section, Engineer, 生産技術部・部員
OKUBO Fujio Noguchiseisakusho Co., Manufacturing Technique Section, Manager, 生産技術部・部長
HARADA Yasunori Toyohashi University of Technology, Faculty of Engineering, Research Associate, 工学部, 助手 (30218656)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2001: ¥4,100,000 (Direct Cost: ¥4,100,000)
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| Keywords | pure titanium sheet / multi-stage deep drawing / seizure / colored titanium sheet / coating treatment / long cup / cold forming |
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| Research Abstract |
Long pure titanium cups were formed by multi-stage cold deep drawing using commercial colored titanium sheets for preventing seizure. The titanium sheets have sufficient ductility and high r-value for the deep drawing, whereas the seizure tends to occur during the deep drawing due to high reactivity with die materials. The colored pure titanium sheets were treated by electrochemical coating so as to get oxide surface layer effective for preventing the seizing. By the use of commercial colored sheets, the investment of coating machines can be avoided in sheet metal forming makers and the quality of the oxide layer can be controlled. The effects of the thickness of the oxide layer, die materials and lubricants on the occurrence of seizure in multi-stage deep drawing were examined. It was found that the coloured pure titanium sheets have sufficient ability in preventing the seizure in multi-stage deep drawing processes.
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