Research of Multi-Stage Cold Deep Drawing Technique of Titanium Alloy Sheets

钛合金板材多级冷拉深工艺研究

• 批准号: 15360386
• 负责人: MORI Ken-ichiro
• 金额: $ 4.93万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15360386/
• 关键词: titanium alloy sheet; multi-stage deep drawing; cold forming; seizure; oxide coating; solution heat treatment; long cup; 焼鈍し処理

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.

钛合金不仅具有优异的耐腐蚀性，而且具有高强度。采用冷拉深成形β类钛合金板材。虽然钛合金一般在高温下加工，但β类型的钛合金板材具有很高的冷加工性能。对钛合金板材进行加热氧化物涂层处理，以防止拉深过程中的卡箍。由于氧化层的存在，新鲜干净的钛在成形过程中不会与模具直接接触，因此氧化物涂层在防止卡箍和刮伤的发生方面是有效的。加热后延性也得到了改善。在不进行中间退火的情况下，成功地成形了钛合金长杯形件。通过对板材进行拉深和细化处理，提高了拉伸杯形件的表面粗糙度。

项目成果

Cold multi-stage cold deep drawing of titanium alloy sheets

钛合金板材冷多级冷拉深

• 发表时间: 2005
• 期刊: Die and Mould Technology 43-7(in printing)
• 作者: Ken-ichiro Mori

チタン合金板の冷間多段深絞り加工

钛合金板材冷多级拉深

• 发表时间: 2005
• 期刊: プレス技術 43(印刷中)
• 作者: 山崎茂;河野隆二;森謙一郎
• 通讯作者: 森謙一郎

純チタンおよびチタン合金板の冷間多段深絞り加工

纯钛及钛合金板材冷多级拉深

• 发表时间: 2005
• 期刊: 型技術 20
• 作者: M.Fukumoto;I.Ohgitani;T.Yasui;森謙一郎
• 通讯作者: 森謙一郎

Cold multi-stage cold deep drawing of pure titanium and titanium alloy sheets

纯钛及钛合金板材的冷多级冷拉深

• 发表时间: 2005
• 期刊: Die and Mould Technology 20-6
• 作者: P.Fauchais;M.Fukumoto;A.Vardelle;M.Vardelle;Ken-ichiro Mori
• 通讯作者: Ken-ichiro Mori