Development of Warm and Hot Press Forming of Ultra High Strength Steel Sheets Using Resistance Heating

超高强度钢板电阻加热温热压成型的研究进展

• 批准号: 17360352
• 负责人: MORI Ken-ichiro
• 金额: $ 8.51万
• 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: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360352/
• 关键词: ultra high tensile strength steel sheet; resistance heating; heating of sheet set into die; warm and hot forming; press forming; springback; die quenching; warm and hot shearing

A warm and hot press forming process of ultra high tensile strength steel sheets using resistance heating was developed to improve springback and formability. In this process, the decrease in temperature of the sheet before the forming is prevented by directly heating the sheets set into the dies by means of the electrical resistance. Since the heating time up to 800 ℃ is only 2 seconds, the resistance heating is rapid enough to synchronize with a press. The reduction of springback in warm bending and the quenching in hot press forming were examined. The oxidation in hot stamping was prevented by coating sheets with an oxidation preventive oil. In addition, a warm and hot shearing process using the resistance heating was developed to reduce the sharing load for the ultra high tensile strength steel sheets.

为改善超高强度钢板的回弹和成形性能，开发了一种电阻加热温热压成形工艺。在该过程中，通过电阻直接加热放入模具中的板材，防止成型前板材温度下降。由于加热到800 ℃的时间仅为2秒，因此电阻加热足够快，可以与压力机同步。研究了温弯回弹的减小方法和热压成形中的淬火方法。通过用防氧化油涂覆片材来防止热冲压中的氧化。此外，为了降低超高强度钢板的均载，开发了一种电阻加热的温热剪切工艺。

项目成果

Prevention of Oxidation in Hot Stamping of Ultra High Strength Steel Sheets

超高强度钢板热冲压氧化的预防

• 发表时间: 2007
• 期刊: Journal of the Japan Society for Technology of Plasticity 48-555
• 作者: K.Mori;S.Maki;S.Saito;M.Kishimoto;T.Hayashi;T.Okumura
• 通讯作者: T.Okumura

Hot Stamping and Press Quenching of Ultrahigh Strength Steel Sheet Using Resistance Heating

• DOI: 10.4028/www.scientific.net/kem.344.309
• 发表时间: 2007-07
• 期刊: Key Engineering Materials
• 作者: S. Maki;A. Hamamoto;Shouichi Saito;K. Mori

超高張力鋼板の熱問プレス成形における酸化防止

超高强度钢板热压成型中的氧化预防

• 发表时间: 2007
• 期刊: 塑性と加工 48・555
• 作者: 森謙一郎;牧清二郎;斉藤翔一;岸本信;林達志;奥村俊彦
• 通讯作者: 奥村俊彦

Application of Resistance Heating Technique to Hot Stamping of High-Strength Steel Sheet

电阻加热技术在高强度钢板热冲压中的应用

• 发表时间: 2006
• 期刊: Journal of the Japan Society for Technology of Plasticity 47-544
• 作者: S.Maki;Y.Tanaka;K.Mori
• 通讯作者: K.Mori

通電加熱を用いた超高張力鋼板のダイクエンチ

电加热超高强度钢板模具淬火

• 发表时间: 2006
• 期刊: 日本鉄鋼協会第151回春季講演大会講演論文集 19・2
• 作者: 森謙一郎;牧清二郎
• 通讯作者: 牧清二郎