| Project/Area Number |
15360386
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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 | 一般 |
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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) |
新家 光雄 豊橋技術科学大学, 工学部, 教授 (50126942)
HARADA Yasunori University of Hyogo, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30218656)
OKUBO Fujio Noguchiseisakusho Co., Manufacturing Technique Section, Manager, 生産技術部・部長(研究職)
MURAO Takuji Noguchiseisakusho Co., Manufacturing Technique Section, Engineer, 生産技術部・部長(研究職)
MAKI Seijiro Toyohashi University of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (20124315)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥7,700,000 (Direct Cost: ¥7,700,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2003: ¥6,400,000 (Direct Cost: ¥6,400,000)
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| Keywords | titanium alloy sheet / multi-stage deep drawing / cold forming / seizure / oxide coating / solution heat treatment / long cup / 焼鈍し処理 |
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| Research Abstract |
The titanium alloy has not only excellent corrosion resistance but also high strength. A β-type titanium alloy sheet is formed by cold deep drawing. Although titanium alloys are generally worked under an elevated temperature, the β-type titanium alloy sheet has high cold workability. The titanium alloy sheet is treated by heating oxide coatings to prevent the seizure during the deep drawing. The oxide coating is effective in preventing the occurrence of seizure and galling, because the fresh and clean titanium is not in direct contact with the die during the forming due to the existence of the oxide layer. The ductility was also improved by the heating. The long titanium alloy cup was successfully formed without intermediate annealing. The surface roughness of the drawn cup was improved by ironing and grain refinement of the sheet.
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