Development of design standard for cold forging die

• Project/Area Number: 21560115
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Gifu University
• Principal Investigator: WANG Zhigang 岐阜大学, 工学部, 教授 (30244510)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 成形加工 / 塑性加工 / 金型 / 鍛造加工 / 冷間鍛造 / 疲労破壊 / 超硬合金

Research Abstract

The prediction method of die stress at the starting point of fatigue crack by the cold forging load has been developed by using the measured die strain generated by forging load. The calculated die stress by FEM simulation shows a good agreement with the measured die stress. The S-N curves of die fatigue in cold forging process had been obtained.

Research Products

• [Presentation] 押出し-据込み成形における超硬金型の破壊 (2012)
  • Author(s): 曽我啓志、李浩傑、西野翔平、王志剛
  • Organizer: 日本機械学会東海支部第61期総会
  • Place of Presentation: 名古屋
  • Year and Date: 2012-03-15
• [Presentation] 押出し-据込み成形における超硬金型の破壊 (2012)
  • Author(s): 曽我啓志、李浩傑、西野翔平、王志剛
  • Organizer: 日本機械学会東海支部第61期総会・講演会
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2012-03-15
• [Presentation] 冷間鍛造における金型の弾塑性変形挙動 (2012)
  • Author(s): 王志剛、李浩傑、中野慎也、曽我啓志
  • Organizer: 日本機械学会東海支部第60期総会
  • Place of Presentation: 豊橋
  • Year and Date: 2012-03-14
• [Presentation] 冷間鍛造における金型の弾塑性変形挙動 (2011)
  • Author(s): 王志剛、李浩傑、中野慎也、曽我啓志
  • Organizer: 日本機械学会東海支部第60期総会・講演会
  • Place of Presentation: 豊橋技術科学大学
  • Year and Date: 2011-03-14
• [Presentation] Elasto-plastic deformation behavior of cemented carbide die in cold forging (2010)
  • Author(s): Zhigang Wang, Haojie Li, Shinya Nakano
  • Organizer: The 10^<th> Asia-Pacific Conference on Engineering Plasticity and Its Applications
  • Place of Presentation: 華中科技大学(中国武漢市)
  • Year and Date: 2010-11-15
• [Presentation] Elasto-plastic deformation behavior of cemented carbide die in cold forging (2010)
  • Author(s): Zhigang Wang, Haojie Li, Shinya Nakano
  • Organizer: Proc. of the 10th Asia-Pacific Conference on Engineering Plasticity and Its Applications
  • Place of Presentation: Wuhan, China
  • Year and Date: 2010-10-16
• [Presentation] Elasto-plastic deformation behavior of cemented carbide die in cold forging (2010)
  • Author(s): Haojie Li, Shinya Nakano, Tatsuhiro Suzuki, Zhigang Wang
  • Organizer: ISIJ Young Researcher's Asian Workshop on Advanced Forming technology
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 2010-09-23
• [Presentation] Elasto-plastic deformation behavior of cemented carbide die in cold forging (2010)
  • Author(s): Haojie Li, Shinya Nakano, Tatsuhiro Suzuki, Zhigang Wang
  • Organizer: ISIJ Young Researcher's Asian Workshop on Advanced Forming technology
  • Place of Presentation: 名古屋
  • Year and Date: 2010-09-23
• [Presentation] 冷間鍛造における金型弾性変形の計測 (2010)
  • Author(s): 鈴木達博・王志剛
  • Organizer: 日本機械学会東海学生会第41回学生員卒業研究発表会
  • Place of Presentation: 名城大学
  • Year and Date: 2010-03-28
• [Presentation] 冷間鍛造における超硬製金型の弾塑性変形 (2009)
  • Author(s): 王志剛・李浩傑・中野慎也
  • Organizer: 平成21年度塑性加工春季講演会
  • Place of Presentation: 京都大学
  • Year and Date: 2009-05-29