Research of Multi-Stage Cold Deep Drawing Technique of Long Pure Titanium Cups

纯钛长杯多级冷拉深工艺研究

• 批准号: 13555198
• 负责人: MORI Ken-ichiro
• 金额: $ 3.33万
• 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: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555198/
• 关键词: pure titanium sheet; multi-stage deep drawing; seizure; colored titanium sheet; coating treatment; long cup; cold forming

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.

长纯钛杯采用商用彩色钛板通过多级冷拉深成型，以防止咬合。钛板具有足够的延展性和较高的r值，适合拉深加工，但由于与模具材料的高反应性，在拉深加工过程中容易发生咬合。对彩色纯钛板进行电化学涂层处理，得到有效防止咬合的氧化物表面层。通过使用商用彩色板材，可以避免金属板材成型制造商对涂层机的投资，并且可以控制氧化层的质量。研究了氧化层厚度、模具材料和润滑剂对多级拉深中咬合发生的影响。结果发现，彩色纯钛板具有足够的能力来防止多阶段深拉工艺中的咬合。

项目成果

Ken-ichiro Mori: "Multi-stage cold deep drawing of long pure titanium cups using colored sheets for prevention of seizure"Annals of the CIRP. 52-1(in press). (2003)

Ken-ichiro Mori：“使用彩色片材对长纯钛杯进行多级冷拉深以预防癫痫发作”CIRP 年鉴。

村尾卓児, 森謙一郎, 原田泰典, 大久保不二男: "窒化皮膜処理による純チタン板の多段深絞り加工における焼付き防止"塑性と加工(日本塑性加工学会誌). 44巻504号. 55-59 (2003)

Takuji Murao、Kenichiro Mori、Yasunori Harada、Fujio Okubo：“通过氮化涂层防止纯钛板多阶段拉深中的咬合”《塑性与加工》（日本塑料加工学会杂志），第 44 卷，第 10 期。 504. 55-59（2003）

Ken-ichiro Mori: "Prevention of seizure by oxide coatings in multi-stage deep drawing of pure titanium sheets"Transaction of NAMRI/SME. 30巻. 25-31 (2002)

Ken-ichiro Mori：“纯钛板多阶段深拉过程中氧化涂层的咬合预防”Transaction of NAMRI/SME，第 30 卷 25-31 (2002)。

Ken-ichiro Mori: "Multi-stage cold deep drawing of long pure titanium cups using coloured sheets for prevention of seizure"Annals of the CIRP. 52巻1号(印刷中). (2003)

Ken-ichiro Mori：“使用彩色片材进行长纯钛杯的多阶​​段冷深拉，以防止癫痫发作”CIRP 年鉴第 52 卷，第 1 期（印刷中）。

Kne-ichiro Mori: "Prevention of seizure by oxide coatings in multi-stage deep drawing of pure titanium sheets"Transaction of NAMRI/SME. 30. 25-31 (2002)

Kne-ichiro Mori：“在纯钛板的多级深拉中防止氧化物涂层咬合”NAMRI/SME 交易。